Migrate prod bot (#1052)

* Updated dev config to point to new Twitch dev bot hosting location.

* Updated prod config to point to new Twitch bot hosting location.

.github/workflows/check.yml

@@ -52,4 +52,4 @@ jobs:
       - name: Run Typescript checker on cloud functions
         if: ${{ success() || failure() }}
         working-directory: functions
-        run: tsc --pretty --project tsconfig.json --noEmit
+        run: tsc -b -v --pretty

.github/workflows/format.yml

@@ -0,0 +1,43 @@
+name: Reformat main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [main]
+
+env:
+  FORCE_COLOR: 3
+  NEXT_TELEMETRY_DISABLED: 1
+
+# mqp - i generated a personal token to use for these writes -- it's unclear
+# why, but the default token didn't work, even when i gave it max permissions
+
+jobs:
+  prettify:
+    name: Auto-prettify
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.FORMATTER_ACCESS_TOKEN }}
+      - name: Restore cached node_modules
+        uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ matrix.node-version }}-nodemodules-${{ hashFiles('**/yarn.lock') }}
+      - name: Install missing dependencies
+        run: yarn install --prefer-offline --frozen-lockfile
+      - name: Run Prettier on web client
+        working-directory: web
+        run: yarn format
+      - name: Commit any Prettier changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Auto-prettification
+          branch: ${{ github.head_ref }}

.github/workflows/lint.yml

@@ -0,0 +1,43 @@
+name: Run linter (remove unused imports)
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [main]
+
+env:
+  FORCE_COLOR: 3
+  NEXT_TELEMETRY_DISABLED: 1
+
+# mqp - i generated a personal token to use for these writes -- it's unclear
+# why, but the default token didn't work, even when i gave it max permissions
+
+jobs:
+  lint:
+    name: Auto-lint
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.FORMATTER_ACCESS_TOKEN }}
+      - name: Restore cached node_modules
+        uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ matrix.node-version }}-nodemodules-${{ hashFiles('**/yarn.lock') }}
+      - name: Install missing dependencies
+        run: yarn install --prefer-offline --frozen-lockfile
+      - name: Run lint script
+        run: yarn lint
+      - name: Commit any lint changes
+        if: always()
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Auto-remove unused imports
+          branch: ${{ github.head_ref }}

.github/workflows/merge-main-into-main2.yml

@@ -0,0 +1,17 @@
+name: Merge main into main2 on every commit
+on:
+  push:
+    branches:
+      - 'main'
+jobs:
+  merge-branch:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+
+      - name: Merge main -> main2
+        uses: devmasx/merge-branch@master
+        with:
+          type: now
+          target_branch: main2
+          github_token: ${{ github.token }}

.gitignore

@@ -3,3 +3,5 @@
 .vercel
 node_modules
 yarn-error.log
+
+firebase-debug.log

.vscode/extensions.json

@@ -6,7 +6,8 @@
   "recommendations": [
     "esbenp.prettier-vscode",
     "dbaeumer.vscode-eslint",
-    "toba.vsfire"
+    "toba.vsfire",
+    "bradlc.vscode-tailwindcss"
   ],
   // List of extensions recommended by VS Code that should not be recommended for users of this workspace.
   "unwantedRecommendations": []

common/.eslintrc.js

@@ -1,6 +1,7 @@
 module.exports = {
-  plugins: ['lodash'],
+  plugins: ['lodash', 'unused-imports'],
   extends: ['eslint:recommended'],
+  ignorePatterns: ['lib'],
   env: {
     browser: true,
     node: true,
@@ -25,12 +26,14 @@ module.exports = {
             caughtErrorsIgnorePattern: '^_',
           },
         ],
+        'unused-imports/no-unused-imports': 'warn',
       },
     },
   ],
   rules: {
     'no-extra-semi': 'off',
     'no-constant-condition': ['error', { checkLoops: false }],
+    'linebreak-style': ['error', 'unix'],
     'lodash/import-scope': [2, 'member'],
   },
 }

common/.gitignore

@@ -1,6 +1,5 @@
 # Compiled JavaScript files
-lib/**/*.js
-lib/**/*.js.map
+lib/
 
 # TypeScript v1 declaration files
 typings/

common/.yarnrc

@@ -0,0 +1 @@
+save-prefix ""

common/add-liquidity.ts

@@ -1,33 +1,30 @@
-import { addCpmmLiquidity, getCpmmLiquidity } from './calculate-cpmm'
+import { getCpmmLiquidity } from './calculate-cpmm'
 import { CPMMContract } from './contract'
 import { LiquidityProvision } from './liquidity-provision'
-import { User } from './user'
 
 export const getNewLiquidityProvision = (
-  user: User,
+  userId: string,
   amount: number,
   contract: CPMMContract,
   newLiquidityProvisionId: string
 ) => {
-  const { pool, p, totalLiquidity } = contract
+  const { pool, p, totalLiquidity, subsidyPool } = contract
 
-  const { newPool, newP } = addCpmmLiquidity(pool, p, amount)
-
-  const liquidity =
-    getCpmmLiquidity(newPool, newP) - getCpmmLiquidity(pool, newP)
+  const liquidity = getCpmmLiquidity(pool, p)
 
   const newLiquidityProvision: LiquidityProvision = {
     id: newLiquidityProvisionId,
-    userId: user.id,
+    userId: userId,
     contractId: contract.id,
     amount,
-    pool: newPool,
-    p: newP,
+    pool,
+    p,
     liquidity,
     createdTime: Date.now(),
   }
 
   const newTotalLiquidity = (totalLiquidity ?? 0) + amount
+  const newSubsidyPool = (subsidyPool ?? 0) + amount
 
-  return { newLiquidityProvision, newPool, newP, newTotalLiquidity }
+  return { newLiquidityProvision, newTotalLiquidity, newSubsidyPool }
 }

common/antes.ts

@@ -5,19 +5,22 @@ import {
   CPMMBinaryContract,
   DPMBinaryContract,
   FreeResponseContract,
+  MultipleChoiceContract,
   NumericContract,
 } from './contract'
 import { User } from './user'
 import { LiquidityProvision } from './liquidity-provision'
 import { noFees } from './fees'
-
-export const FIXED_ANTE = 100
-
-// deprecated
-export const PHANTOM_ANTE = 0.001
-export const MINIMUM_ANTE = 50
+import { Answer } from './answer'
 
 export const HOUSE_LIQUIDITY_PROVIDER_ID = 'IPTOzEqrpkWmEzh6hwvAyY9PqFb2' // @ManifoldMarkets' id
+export const DEV_HOUSE_LIQUIDITY_PROVIDER_ID = '94YYTk1AFWfbWMpfYcvnnwI1veP2' // @ManifoldMarkets' id
+export const UNIQUE_BETTOR_LIQUIDITY_AMOUNT = 20
+
+type NormalizedBet<T extends Bet = Bet> = Omit<
+  T,
+  'userAvatarUrl' | 'userName' | 'userUsername'
+>
 
 export function getCpmmInitialLiquidity(
   providerId: string,
@@ -54,7 +57,7 @@ export function getAnteBets(
 
   const { createdTime } = contract
 
-  const yesBet: Bet = {
+  const yesBet: NormalizedBet = {
     id: yesAnteId,
     userId: creator.id,
     contractId: contract.id,
@@ -68,7 +71,7 @@ export function getAnteBets(
     fees: noFees,
   }
 
-  const noBet: Bet = {
+  const noBet: NormalizedBet = {
     id: noAnteId,
     userId: creator.id,
     contractId: contract.id,
@@ -96,7 +99,7 @@ export function getFreeAnswerAnte(
 
   const { createdTime } = contract
 
-  const anteBet: Bet = {
+  const anteBet: NormalizedBet = {
     id: anteBetId,
     userId: anteBettorId,
     contractId: contract.id,
@@ -113,6 +116,50 @@ export function getFreeAnswerAnte(
   return anteBet
 }
 
+export function getMultipleChoiceAntes(
+  creator: User,
+  contract: MultipleChoiceContract,
+  answers: string[],
+  betDocIds: string[]
+) {
+  const { totalBets, totalShares } = contract
+  const amount = totalBets['0']
+  const shares = totalShares['0']
+  const p = 1 / answers.length
+
+  const { createdTime } = contract
+
+  const bets: NormalizedBet[] = answers.map((answer, i) => ({
+    id: betDocIds[i],
+    userId: creator.id,
+    contractId: contract.id,
+    amount,
+    shares,
+    outcome: i.toString(),
+    probBefore: p,
+    probAfter: p,
+    createdTime,
+    isAnte: true,
+    fees: noFees,
+  }))
+
+  const { username, name, avatarUrl } = creator
+
+  const answerObjects: Answer[] = answers.map((answer, i) => ({
+    id: i.toString(),
+    number: i,
+    contractId: contract.id,
+    createdTime,
+    userId: creator.id,
+    username,
+    name,
+    avatarUrl,
+    text: answer,
+  }))
+
+  return { bets, answerObjects }
+}
+
 export function getNumericAnte(
   anteBettorId: string,
   contract: NumericContract,
@@ -132,7 +179,7 @@ export function getNumericAnte(
     range(0, bucketCount).map((_, i) => [i, betAnte])
   )
 
-  const anteBet: NumericBet = {
+  const anteBet: NormalizedBet<NumericBet> = {
     id: newBetId,
     userId: anteBettorId,
     contractId: contract.id,

common/api.ts

@@ -0,0 +1,24 @@
+import { ENV_CONFIG } from './envs/constants'
+
+export class APIError extends Error {
+  code: number
+  details?: unknown
+  constructor(code: number, message: string, details?: unknown) {
+    super(message)
+    this.code = code
+    this.name = 'APIError'
+    this.details = details
+  }
+}
+
+export function getFunctionUrl(name: string) {
+  if (process.env.NEXT_PUBLIC_FUNCTIONS_URL) {
+    return `${process.env.NEXT_PUBLIC_FUNCTIONS_URL}/${name}`
+  } else if (process.env.NEXT_PUBLIC_FIREBASE_EMULATE) {
+    const { projectId, region } = ENV_CONFIG.firebaseConfig
+    return `http://localhost:5001/${projectId}/${region}/${name}`
+  } else {
+    const { cloudRunId, cloudRunRegion } = ENV_CONFIG
+    return `https://${name}-${cloudRunId}-${cloudRunRegion}.a.run.app`
+  }
+}

common/badge.ts

@@ -0,0 +1,123 @@
+import { User } from './user'
+
+export type Badge = {
+  type: BadgeTypes
+  createdTime: number
+  data: { [key: string]: any }
+  name: 'Proven Correct' | 'Streaker' | 'Market Creator'
+}
+
+export type BadgeTypes = 'PROVEN_CORRECT' | 'STREAKER' | 'MARKET_CREATOR'
+
+export type ProvenCorrectBadgeData = {
+  type: 'PROVEN_CORRECT'
+  data: {
+    contractSlug: string
+    contractCreatorUsername: string
+    contractTitle: string
+    commentId: string
+    betAmount: number
+  }
+}
+
+export type MarketCreatorBadgeData = {
+  type: 'MARKET_CREATOR'
+  data: {
+    totalContractsCreated: number
+  }
+}
+
+export type StreakerBadgeData = {
+  type: 'STREAKER'
+  data: {
+    totalBettingStreak: number
+  }
+}
+
+export type ProvenCorrectBadge = Badge & ProvenCorrectBadgeData
+export type StreakerBadge = Badge & StreakerBadgeData
+export type MarketCreatorBadge = Badge & MarketCreatorBadgeData
+
+export const MINIMUM_UNIQUE_BETTORS_FOR_PROVEN_CORRECT_BADGE = 5
+export const provenCorrectRarityThresholds = [1, 1000, 10000]
+const calculateProvenCorrectBadgeRarity = (badge: ProvenCorrectBadge) => {
+  const { betAmount } = badge.data
+  const thresholdArray = provenCorrectRarityThresholds
+  let i = thresholdArray.length - 1
+  while (i >= 0) {
+    if (betAmount >= thresholdArray[i]) {
+      return i + 1
+    }
+    i--
+  }
+  return 1
+}
+
+export const streakerBadgeRarityThresholds = [1, 50, 250]
+const calculateStreakerBadgeRarity = (badge: StreakerBadge) => {
+  const { totalBettingStreak } = badge.data
+  const thresholdArray = streakerBadgeRarityThresholds
+  let i = thresholdArray.length - 1
+  while (i >= 0) {
+    if (totalBettingStreak == thresholdArray[i]) {
+      return i + 1
+    }
+    i--
+  }
+  return 1
+}
+
+export const marketCreatorBadgeRarityThresholds = [1, 75, 300]
+const calculateMarketCreatorBadgeRarity = (badge: MarketCreatorBadge) => {
+  const { totalContractsCreated } = badge.data
+  const thresholdArray = marketCreatorBadgeRarityThresholds
+  let i = thresholdArray.length - 1
+  while (i >= 0) {
+    if (totalContractsCreated == thresholdArray[i]) {
+      return i + 1
+    }
+    i--
+  }
+  return 1
+}
+
+export type rarities = 'bronze' | 'silver' | 'gold'
+
+const rarityRanks: { [key: number]: rarities } = {
+  1: 'bronze',
+  2: 'silver',
+  3: 'gold',
+}
+
+export const calculateBadgeRarity = (badge: Badge) => {
+  switch (badge.type) {
+    case 'PROVEN_CORRECT':
+      return rarityRanks[
+        calculateProvenCorrectBadgeRarity(badge as ProvenCorrectBadge)
+      ]
+    case 'MARKET_CREATOR':
+      return rarityRanks[
+        calculateMarketCreatorBadgeRarity(badge as MarketCreatorBadge)
+      ]
+    case 'STREAKER':
+      return rarityRanks[calculateStreakerBadgeRarity(badge as StreakerBadge)]
+    default:
+      return rarityRanks[0]
+  }
+}
+
+export const getBadgesByRarity = (user: User | null | undefined) => {
+  const rarities: { [key in rarities]: number } = {
+    bronze: 0,
+    silver: 0,
+    gold: 0,
+  }
+  if (!user) return rarities
+  Object.values(user.achievements).map((value) => {
+    value.badges.map((badge) => {
+      rarities[calculateBadgeRarity(badge)] =
+        (rarities[calculateBadgeRarity(badge)] ?? 0) + 1
+    })
+  })
+  return rarities
+}

common/bet.ts

@@ -3,7 +3,14 @@ import { Fees } from './fees'
 export type Bet = {
   id: string
   userId: string
+
+  // denormalized for bet lists
+  userAvatarUrl?: string
+  userUsername: string
+  userName: string
+
   contractId: string
+  createdTime: number
 
   amount: number // bet size; negative if SELL bet
   loanAmount?: number
@@ -13,21 +20,22 @@ export type Bet = {
   probBefore: number
   probAfter: number
 
-  sale?: {
-    amount: number // amount user makes from sale
-    betId: string // id of bet being sold
-    // TODO: add sale time?
-  }
-
   fees: Fees
 
-  isSold?: boolean // true if this BUY bet has been sold
   isAnte?: boolean
   isLiquidityProvision?: boolean
   isRedemption?: boolean
+  challengeSlug?: string
 
-  createdTime: number
+  // Props for bets in DPM contract below.
+  // A bet is either a BUY or a SELL that sells all of a previous buy.
+  isSold?: boolean // true if this BUY bet has been sold
+  // This field marks a SELL bet.
+  sale?: {
+    amount: number // amount user makes from sale
+    betId: string // id of BUY bet being sold
   }
+} & Partial<LimitProps>
 
 export type NumericBet = Bet & {
   value: number
@@ -35,4 +43,27 @@ export type NumericBet = Bet & {
   allBetAmounts: { [outcome: string]: number }
 }
 
-export const MAX_LOAN_PER_CONTRACT = 20
+// Binary market limit order.
+export type LimitBet = Bet & LimitProps
+
+type LimitProps = {
+  orderAmount: number // Amount of limit order.
+  limitProb: number // [0, 1]. Bet to this probability.
+  isFilled: boolean // Whether all of the bet amount has been filled.
+  isCancelled: boolean // Whether to prevent any further fills.
+  // A record of each transaction that partially (or fully) fills the orderAmount.
+  // I.e. A limit order could be filled by partially matching with several bets.
+  // Non-limit orders can also be filled by matching with multiple limit orders.
+  fills: fill[]
+}
+
+export type fill = {
+  // The id the bet matched against, or null if the bet was matched by the pool.
+  matchedBetId: string | null
+  amount: number
+  shares: number
+  timestamp: number
+  // If the fill is a sale, it means the matching bet has shares of the same outcome.
+  // I.e. -fill.shares === matchedBet.shares
+  isSale?: boolean
+}

common/calculate-cpmm.ts

@@ -1,9 +1,15 @@
-import { sum, groupBy, mapValues, sumBy, partition } from 'lodash'
+import { groupBy, mapValues, sumBy } from 'lodash'
+import { LimitBet } from './bet'
 
-import { CPMMContract } from './contract'
-import { CREATOR_FEE, Fees, LIQUIDITY_FEE, noFees, PLATFORM_FEE } from './fees'
+import { CREATOR_FEE, Fees, LIQUIDITY_FEE, PLATFORM_FEE } from './fees'
 import { LiquidityProvision } from './liquidity-provision'
-import { addObjects } from './util/object'
+import { computeFills } from './new-bet'
+import { binarySearch } from './util/algos'
+
+export type CpmmState = {
+  pool: { [outcome: string]: number }
+  p: number
+}
 
 export function getCpmmProbability(
   pool: { [outcome: string]: number },
@@ -14,11 +20,11 @@ export function getCpmmProbability(
 }
 
 export function getCpmmProbabilityAfterBetBeforeFees(
-  contract: CPMMContract,
+  state: CpmmState,
   outcome: string,
   bet: number
 ) {
-  const { pool, p } = contract
+  const { pool, p } = state
   const shares = calculateCpmmShares(pool, p, bet, outcome)
   const { YES: y, NO: n } = pool
 
@@ -31,12 +37,12 @@ export function getCpmmProbabilityAfterBetBeforeFees(
 }
 
 export function getCpmmOutcomeProbabilityAfterBet(
-  contract: CPMMContract,
+  state: CpmmState,
   outcome: string,
   bet: number
 ) {
-  const { newPool } = calculateCpmmPurchase(contract, bet, outcome)
-  const p = getCpmmProbability(newPool, contract.p)
+  const { newPool } = calculateCpmmPurchase(state, bet, outcome)
+  const p = getCpmmProbability(newPool, state.p)
   return outcome === 'NO' ? 1 - p : p
 }
 
@@ -58,12 +64,8 @@ function calculateCpmmShares(
     : n + bet - (k * (bet + y) ** -p) ** (1 / (1 - p))
 }
 
-export function getCpmmLiquidityFee(
-  contract: CPMMContract,
-  bet: number,
-  outcome: string
-) {
-  const prob = getCpmmProbabilityAfterBetBeforeFees(contract, outcome, bet)
+export function getCpmmFees(state: CpmmState, bet: number, outcome: string) {
+  const prob = getCpmmProbabilityAfterBetBeforeFees(state, outcome, bet)
   const betP = outcome === 'YES' ? 1 - prob : prob
 
   const liquidityFee = LIQUIDITY_FEE * betP * bet
@@ -78,25 +80,23 @@ export function getCpmmLiquidityFee(
 }
 
 export function calculateCpmmSharesAfterFee(
-  contract: CPMMContract,
+  state: CpmmState,
   bet: number,
   outcome: string
 ) {
-  const { pool, p } = contract
-  const { remainingBet } = getCpmmLiquidityFee(contract, bet, outcome)
+  const { pool, p } = state
+  const { remainingBet } = getCpmmFees(state, bet, outcome)
 
   return calculateCpmmShares(pool, p, remainingBet, outcome)
 }
 
 export function calculateCpmmPurchase(
-  contract: CPMMContract,
+  state: CpmmState,
   bet: number,
   outcome: string
 ) {
-  const { pool, p } = contract
-  const { remainingBet, fees } = getCpmmLiquidityFee(contract, bet, outcome)
-  // const remainingBet = bet
-  // const fees = noFees
+  const { pool, p } = state
+  const { remainingBet, fees } = getCpmmFees(state, bet, outcome)
 
   const shares = calculateCpmmShares(pool, p, remainingBet, outcome)
   const { YES: y, NO: n } = pool
@@ -115,119 +115,125 @@ export function calculateCpmmPurchase(
   return { shares, newPool, newP, fees }
 }
 
-function computeK(y: number, n: number, p: number) {
-  return y ** p * n ** (1 - p)
-}
-
-function sellSharesK(
-  y: number,
-  n: number,
-  p: number,
-  s: number,
-  outcome: 'YES' | 'NO',
-  b: number
-) {
-  return outcome === 'YES'
-    ? computeK(y - b + s, n - b, p)
-    : computeK(y - b, n - b + s, p)
-}
-
-function calculateCpmmShareValue(
-  contract: CPMMContract,
-  shares: number,
+// Note: there might be a closed form solution for this.
+// If so, feel free to switch out this implementation.
+export function calculateCpmmAmountToProb(
+  state: CpmmState,
+  prob: number,
   outcome: 'YES' | 'NO'
 ) {
-  const { pool, p } = contract
+  if (prob <= 0 || prob >= 1 || isNaN(prob)) return Infinity
+  if (outcome === 'NO') prob = 1 - prob
 
-  // Find bet amount that preserves k after selling shares.
-  const k = computeK(pool.YES, pool.NO, p)
-  const otherPool = outcome === 'YES' ? pool.NO : pool.YES
+  // First, find an upper bound that leads to a more extreme probability than prob.
+  let maxGuess = 10
+  let newProb = 0
+  do {
+    maxGuess *= 10
+    newProb = getCpmmOutcomeProbabilityAfterBet(state, outcome, maxGuess)
+  } while (newProb < prob)
 
-  // Constrain the max sale value to the lessor of 1. shares and 2. the other pool.
-  // This is because 1. the max value per share is M$ 1,
-  // and 2. The other pool cannot go negative and the sale value is subtracted from it.
-  // (Without this, there are multiple solutions for the same k.)
-  let highAmount = Math.min(shares, otherPool)
-  let lowAmount = 0
-  let mid = 0
-  let kGuess = 0
-  while (true) {
-    mid = lowAmount + (highAmount - lowAmount) / 2
+  // Then, binary search for the amount that gets closest to prob.
+  const amount = binarySearch(0, maxGuess, (amount) => {
+    const newProb = getCpmmOutcomeProbabilityAfterBet(state, outcome, amount)
+    return newProb - prob
+  })
 
-    // Break once we've reached max precision.
-    if (mid === lowAmount || mid === highAmount) break
-
-    kGuess = sellSharesK(pool.YES, pool.NO, p, shares, outcome, mid)
-    if (kGuess < k) {
-      highAmount = mid
-    } else {
-      lowAmount = mid
+  return amount
 }
-  }
-  return mid
+
+function calculateAmountToBuyShares(
+  state: CpmmState,
+  shares: number,
+  outcome: 'YES' | 'NO',
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
+) {
+  // Search for amount between bounds (0, shares).
+  // Min share price is M$0, and max is M$1 each.
+  return binarySearch(0, shares, (amount) => {
+    const { takers } = computeFills(
+      outcome,
+      amount,
+      state,
+      undefined,
+      unfilledBets,
+      balanceByUserId
+    )
+
+    const totalShares = sumBy(takers, (taker) => taker.shares)
+    return totalShares - shares
+  })
 }
 
 export function calculateCpmmSale(
-  contract: CPMMContract,
+  state: CpmmState,
   shares: number,
-  outcome: string
+  outcome: 'YES' | 'NO',
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
 ) {
   if (Math.round(shares) < 0) {
     throw new Error('Cannot sell non-positive shares')
   }
 
-  const saleValue = calculateCpmmShareValue(
-    contract,
+  const oppositeOutcome = outcome === 'YES' ? 'NO' : 'YES'
+  const buyAmount = calculateAmountToBuyShares(
+    state,
     shares,
-    outcome as 'YES' | 'NO'
+    oppositeOutcome,
+    unfilledBets,
+    balanceByUserId
   )
 
-  const fees = noFees
+  const { cpmmState, makers, takers, totalFees, ordersToCancel } = computeFills(
+    oppositeOutcome,
+    buyAmount,
+    state,
+    undefined,
+    unfilledBets,
+    balanceByUserId
+  )
 
-  // const { fees, remainingBet: saleValue } = getCpmmLiquidityFee(
-  //   contract,
-  //   rawSaleValue,
-  //   outcome === 'YES' ? 'NO' : 'YES'
-  // )
+  // Transform buys of opposite outcome into sells.
+  const saleTakers = takers.map((taker) => ({
+    ...taker,
+    // You bought opposite shares, which combine with existing shares, removing them.
+    shares: -taker.shares,
+    // Opposite shares combine with shares you are selling for M$ of shares.
+    // You paid taker.amount for the opposite shares.
+    // Take the negative because this is money you gain.
+    amount: -(taker.shares - taker.amount),
+    isSale: true,
+  }))
 
-  const { pool } = contract
-  const { YES: y, NO: n } = pool
+  const saleValue = -sumBy(saleTakers, (taker) => taker.amount)
 
-  const { liquidityFee: fee } = fees
-
-  const [newY, newN] =
-    outcome === 'YES'
-      ? [y + shares - saleValue + fee, n - saleValue + fee]
-      : [y - saleValue + fee, n + shares - saleValue + fee]
-
-  if (newY < 0 || newN < 0) {
-    console.log('calculateCpmmSale', {
-      newY,
-      newN,
-      y,
-      n,
-      shares,
+  return {
     saleValue,
-      fee,
-      outcome,
-    })
-    throw new Error('Cannot sell more than in pool')
+    cpmmState,
+    fees: totalFees,
+    makers,
+    takers: saleTakers,
+    ordersToCancel,
   }
-
-  const postBetPool = { YES: newY, NO: newN }
-
-  const { newPool, newP } = addCpmmLiquidity(postBetPool, contract.p, fee)
-
-  return { saleValue, newPool, newP, fees }
 }
 
 export function getCpmmProbabilityAfterSale(
-  contract: CPMMContract,
+  state: CpmmState,
   shares: number,
-  outcome: 'YES' | 'NO'
+  outcome: 'YES' | 'NO',
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
 ) {
-  const { newPool } = calculateCpmmSale(contract, shares, outcome)
-  return getCpmmProbability(newPool, contract.p)
+  const { cpmmState } = calculateCpmmSale(
+    state,
+    shares,
+    outcome,
+    unfilledBets,
+    balanceByUserId
+  )
+  return getCpmmProbability(cpmmState.pool, cpmmState.p)
 }
 
 export function getCpmmLiquidity(
@@ -260,46 +266,23 @@ export function addCpmmLiquidity(
   return { newPool, liquidity, newP }
 }
 
-const calculateLiquidityDelta = (p: number) => (l: LiquidityProvision) => {
-  const oldLiquidity = getCpmmLiquidity(l.pool, p)
+export function getCpmmLiquidityPoolWeights(liquidities: LiquidityProvision[]) {
+  const userAmounts = groupBy(liquidities, (w) => w.userId)
+  const totalAmount = sumBy(liquidities, (w) => w.amount)
 
-  const newPool = addObjects(l.pool, { YES: l.amount, NO: l.amount })
-  const newLiquidity = getCpmmLiquidity(newPool, p)
-
-  const liquidity = newLiquidity - oldLiquidity
-  return liquidity
-}
-
-export function getCpmmLiquidityPoolWeights(
-  contract: CPMMContract,
-  liquidities: LiquidityProvision[]
-) {
-  const [antes, nonAntes] = partition(liquidities, (l) => !!l.isAnte)
-
-  const calcLiqudity = calculateLiquidityDelta(contract.p)
-  const liquidityShares = nonAntes.map(calcLiqudity)
-
-  const shareSum = sum(liquidityShares) + sum(antes.map(calcLiqudity))
-
-  const weights = liquidityShares.map((s, i) => ({
-    weight: s / shareSum,
-    providerId: nonAntes[i].userId,
-  }))
-
-  const userWeights = groupBy(weights, (w) => w.providerId)
-  const totalUserWeights = mapValues(userWeights, (userWeight) =>
-    sumBy(userWeight, (w) => w.weight)
+  return mapValues(
+    userAmounts,
+    (amounts) => sumBy(amounts, (w) => w.amount) / totalAmount
   )
-  return totalUserWeights
 }
 
 export function getUserLiquidityShares(
   userId: string,
-  contract: CPMMContract,
+  state: CpmmState,
   liquidities: LiquidityProvision[]
 ) {
-  const weights = getCpmmLiquidityPoolWeights(contract, liquidities)
+  const weights = getCpmmLiquidityPoolWeights(liquidities)
   const userWeight = weights[userId] ?? 0
 
-  return mapValues(contract.pool, (shares) => userWeight * shares)
+  return mapValues(state.pool, (shares) => userWeight * shares)
 }

common/calculate-dpm.ts

@@ -2,7 +2,7 @@ import { cloneDeep, range, sum, sumBy, sortBy, mapValues } from 'lodash'
 import { Bet, NumericBet } from './bet'
 import { DPMContract, DPMBinaryContract, NumericContract } from './contract'
 import { DPM_FEES } from './fees'
-import { normpdf } from '../common/util/math'
+import { normpdf } from './util/math'
 import { addObjects } from './util/object'
 
 export function getDpmProbability(totalShares: { [outcome: string]: number }) {

common/calculate-metrics.ts

@@ -0,0 +1,315 @@
+import { Dictionary, groupBy, last, partition, sum, sumBy, uniq } from 'lodash'
+import { calculatePayout, getContractBetMetrics } from './calculate'
+import { Bet, LimitBet } from './bet'
+import {
+  Contract,
+  CPMMBinaryContract,
+  CPMMContract,
+  DPMContract,
+} from './contract'
+import { PortfolioMetrics, User } from './user'
+import { DAY_MS } from './util/time'
+import { getBinaryCpmmBetInfo, getNewMultiBetInfo } from './new-bet'
+import { getCpmmProbability } from './calculate-cpmm'
+import { removeUndefinedProps } from './util/object'
+
+const computeInvestmentValue = (
+  bets: Bet[],
+  contractsDict: { [k: string]: Contract }
+) => {
+  return sumBy(bets, (bet) => {
+    const contract = contractsDict[bet.contractId]
+    if (!contract || contract.isResolved) return 0
+    if (bet.sale || bet.isSold) return 0
+
+    const payout = calculatePayout(contract, bet, 'MKT')
+    const value = payout - (bet.loanAmount ?? 0)
+    if (isNaN(value)) return 0
+    return value
+  })
+}
+
+export const computeInvestmentValueCustomProb = (
+  bets: Bet[],
+  contract: Contract,
+  p: number
+) => {
+  return sumBy(bets, (bet) => {
+    if (!contract || contract.isResolved) return 0
+    if (bet.sale || bet.isSold) return 0
+    const { outcome, shares } = bet
+
+    const betP = outcome === 'YES' ? p : 1 - p
+
+    const value = betP * shares
+    if (isNaN(value)) return 0
+    return value
+  })
+}
+
+export const computeElasticity = (
+  bets: Bet[],
+  contract: Contract,
+  betAmount = 50
+) => {
+  const { mechanism, outcomeType } = contract
+  return mechanism === 'cpmm-1' &&
+    (outcomeType === 'BINARY' || outcomeType === 'PSEUDO_NUMERIC')
+    ? computeBinaryCpmmElasticity(bets, contract, betAmount)
+    : computeDpmElasticity(contract, betAmount)
+}
+
+export const computeBinaryCpmmElasticity = (
+  bets: Bet[],
+  contract: CPMMContract,
+  betAmount: number
+) => {
+  const limitBets = bets
+    .filter(
+      (b) =>
+        !b.isFilled &&
+        !b.isSold &&
+        !b.isRedemption &&
+        !b.sale &&
+        !b.isCancelled &&
+        b.limitProb !== undefined
+    )
+    .sort((a, b) => a.createdTime - b.createdTime) as LimitBet[]
+
+  const userIds = uniq(limitBets.map((b) => b.userId))
+  // Assume all limit orders are good.
+  const userBalances = Object.fromEntries(
+    userIds.map((id) => [id, Number.MAX_SAFE_INTEGER])
+  )
+
+  const { newPool: poolY, newP: pY } = getBinaryCpmmBetInfo(
+    'YES',
+    betAmount,
+    contract,
+    undefined,
+    limitBets,
+    userBalances
+  )
+  const resultYes = getCpmmProbability(poolY, pY)
+
+  const { newPool: poolN, newP: pN } = getBinaryCpmmBetInfo(
+    'NO',
+    betAmount,
+    contract,
+    undefined,
+    limitBets,
+    userBalances
+  )
+  const resultNo = getCpmmProbability(poolN, pN)
+
+  // handle AMM overflow
+  const safeYes = Number.isFinite(resultYes) ? resultYes : 1
+  const safeNo = Number.isFinite(resultNo) ? resultNo : 0
+
+  return safeYes - safeNo
+}
+
+export const computeDpmElasticity = (
+  contract: DPMContract,
+  betAmount: number
+) => {
+  return getNewMultiBetInfo('', 2 * betAmount, contract).newBet.probAfter
+}
+
+const computeTotalPool = (userContracts: Contract[], startTime = 0) => {
+  const periodFilteredContracts = userContracts.filter(
+    (contract) => contract.createdTime >= startTime
+  )
+  return sum(
+    periodFilteredContracts.map((contract) => sum(Object.values(contract.pool)))
+  )
+}
+
+export const computeVolume = (contractBets: Bet[], since: number) => {
+  return sumBy(contractBets, (b) =>
+    b.createdTime > since && !b.isRedemption ? Math.abs(b.amount) : 0
+  )
+}
+
+const calculateProbChangeSince = (descendingBets: Bet[], since: number) => {
+  const newestBet = descendingBets[0]
+  if (!newestBet) return 0
+
+  const betBeforeSince = descendingBets.find((b) => b.createdTime < since)
+
+  if (!betBeforeSince) {
+    const oldestBet = last(descendingBets) ?? newestBet
+    return newestBet.probAfter - oldestBet.probBefore
+  }
+
+  return newestBet.probAfter - betBeforeSince.probAfter
+}
+
+export const calculateProbChanges = (descendingBets: Bet[]) => {
+  const now = Date.now()
+  const yesterday = now - DAY_MS
+  const weekAgo = now - 7 * DAY_MS
+  const monthAgo = now - 30 * DAY_MS
+
+  return {
+    day: calculateProbChangeSince(descendingBets, yesterday),
+    week: calculateProbChangeSince(descendingBets, weekAgo),
+    month: calculateProbChangeSince(descendingBets, monthAgo),
+  }
+}
+
+export const calculateCreatorVolume = (userContracts: Contract[]) => {
+  const allTimeCreatorVolume = computeTotalPool(userContracts, 0)
+  const monthlyCreatorVolume = computeTotalPool(
+    userContracts,
+    Date.now() - 30 * DAY_MS
+  )
+  const weeklyCreatorVolume = computeTotalPool(
+    userContracts,
+    Date.now() - 7 * DAY_MS
+  )
+
+  const dailyCreatorVolume = computeTotalPool(
+    userContracts,
+    Date.now() - 1 * DAY_MS
+  )
+
+  return {
+    daily: dailyCreatorVolume,
+    weekly: weeklyCreatorVolume,
+    monthly: monthlyCreatorVolume,
+    allTime: allTimeCreatorVolume,
+  }
+}
+
+export const calculateNewPortfolioMetrics = (
+  user: User,
+  contractsById: { [k: string]: Contract },
+  currentBets: Bet[]
+) => {
+  const investmentValue = computeInvestmentValue(currentBets, contractsById)
+  const newPortfolio = {
+    investmentValue: investmentValue,
+    balance: user.balance,
+    totalDeposits: user.totalDeposits,
+    timestamp: Date.now(),
+    userId: user.id,
+  }
+  return newPortfolio
+}
+
+const calculateProfitForPeriod = (
+  startingPortfolio: PortfolioMetrics | undefined,
+  currentProfit: number
+) => {
+  if (startingPortfolio === undefined) {
+    return currentProfit
+  }
+
+  const startingProfit = calculatePortfolioProfit(startingPortfolio)
+
+  return currentProfit - startingProfit
+}
+
+export const calculatePortfolioProfit = (portfolio: PortfolioMetrics) => {
+  return portfolio.investmentValue + portfolio.balance - portfolio.totalDeposits
+}
+
+export const calculateNewProfit = (
+  portfolioHistory: Record<
+    'current' | 'day' | 'week' | 'month',
+    PortfolioMetrics | undefined
+  >,
+  newPortfolio: PortfolioMetrics
+) => {
+  const allTimeProfit = calculatePortfolioProfit(newPortfolio)
+
+  const newProfit = {
+    daily: calculateProfitForPeriod(portfolioHistory.day, allTimeProfit),
+    weekly: calculateProfitForPeriod(portfolioHistory.week, allTimeProfit),
+    monthly: calculateProfitForPeriod(portfolioHistory.month, allTimeProfit),
+    allTime: allTimeProfit,
+  }
+
+  return newProfit
+}
+
+export const calculateMetricsByContract = (
+  bets: Bet[],
+  contractsById: Dictionary<Contract>
+) => {
+  const betsByContract = groupBy(bets, (bet) => bet.contractId)
+  const unresolvedContracts = Object.keys(betsByContract)
+    .map((cid) => contractsById[cid])
+    .filter((c) => c && !c.isResolved)
+
+  return unresolvedContracts.map((c) => {
+    const bets = betsByContract[c.id] ?? []
+    const current = getContractBetMetrics(c, bets)
+
+    let periodMetrics
+    if (c.mechanism === 'cpmm-1' && c.outcomeType === 'BINARY') {
+      const periods = ['day', 'week', 'month'] as const
+      periodMetrics = Object.fromEntries(
+        periods.map((period) => [
+          period,
+          calculatePeriodProfit(c, bets, period),
+        ])
+      )
+    }
+
+    return removeUndefinedProps({
+      contractId: c.id,
+      ...current,
+      from: periodMetrics,
+    })
+  })
+}
+
+export type ContractMetrics = ReturnType<
+  typeof calculateMetricsByContract
+>[number]
+
+const calculatePeriodProfit = (
+  contract: CPMMBinaryContract,
+  bets: Bet[],
+  period: 'day' | 'week' | 'month'
+) => {
+  const days = period === 'day' ? 1 : period === 'week' ? 7 : 30
+  const fromTime = Date.now() - days * DAY_MS
+  const [previousBets, recentBets] = partition(
+    bets,
+    (b) => b.createdTime < fromTime
+  )
+
+  const prevProb = contract.prob - contract.probChanges[period]
+  const prob = contract.resolutionProbability
+    ? contract.resolutionProbability
+    : contract.prob
+
+  const previousBetsValue = computeInvestmentValueCustomProb(
+    previousBets,
+    contract,
+    prevProb
+  )
+  const currentBetsValue = computeInvestmentValueCustomProb(
+    previousBets,
+    contract,
+    prob
+  )
+
+  const { profit: recentProfit, invested: recentInvested } =
+    getContractBetMetrics(contract, recentBets)
+
+  const profit = currentBetsValue - previousBetsValue + recentProfit
+  const invested = previousBetsValue + recentInvested
+  const profitPercent = invested === 0 ? 0 : 100 * (profit / invested)
+
+  return {
+    profit,
+    profitPercent,
+    invested,
+    prevValue: previousBetsValue,
+    value: currentBetsValue,
+  }
+}

common/calculate.ts

@@ -1,5 +1,5 @@
-import { maxBy } from 'lodash'
-import { Bet } from './bet'
+import { maxBy, partition, sortBy, sum, sumBy } from 'lodash'
+import { Bet, LimitBet } from './bet'
 import {
   calculateCpmmSale,
   getCpmmProbability,
@@ -18,15 +18,26 @@ import {
   getDpmProbabilityAfterSale,
 } from './calculate-dpm'
 import { calculateFixedPayout } from './calculate-fixed-payouts'
-import { Contract, BinaryContract, FreeResponseContract } from './contract'
+import {
+  Contract,
+  BinaryContract,
+  FreeResponseContract,
+  PseudoNumericContract,
+  MultipleChoiceContract,
+} from './contract'
+import { floatingEqual } from './util/math'
 
-export function getProbability(contract: BinaryContract) {
+export function getProbability(
+  contract: BinaryContract | PseudoNumericContract
+) {
   return contract.mechanism === 'cpmm-1'
     ? getCpmmProbability(contract.pool, contract.p)
     : getDpmProbability(contract.totalShares)
 }
 
-export function getInitialProbability(contract: BinaryContract) {
+export function getInitialProbability(
+  contract: BinaryContract | PseudoNumericContract
+) {
   if (contract.initialProbability) return contract.initialProbability
 
   if (contract.mechanism === 'dpm-2' || (contract as any).totalShares)
@@ -64,9 +75,22 @@ export function calculateShares(
     : calculateDpmShares(contract.totalShares, bet, betChoice)
 }
 
-export function calculateSaleAmount(contract: Contract, bet: Bet) {
-  return contract.mechanism === 'cpmm-1' && contract.outcomeType === 'BINARY'
-    ? calculateCpmmSale(contract, Math.abs(bet.shares), bet.outcome).saleValue
+export function calculateSaleAmount(
+  contract: Contract,
+  bet: Bet,
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
+) {
+  return contract.mechanism === 'cpmm-1' &&
+    (contract.outcomeType === 'BINARY' ||
+      contract.outcomeType === 'PSEUDO_NUMERIC')
+    ? calculateCpmmSale(
+        contract,
+        Math.abs(bet.shares),
+        bet.outcome as 'YES' | 'NO',
+        unfilledBets,
+        balanceByUserId
+      ).saleValue
     : calculateDpmSaleAmount(contract, bet)
 }
 
@@ -79,15 +103,25 @@ export function calculatePayoutAfterCorrectBet(contract: Contract, bet: Bet) {
 export function getProbabilityAfterSale(
   contract: Contract,
   outcome: string,
-  shares: number
+  shares: number,
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
 ) {
   return contract.mechanism === 'cpmm-1'
-    ? getCpmmProbabilityAfterSale(contract, shares, outcome as 'YES' | 'NO')
+    ? getCpmmProbabilityAfterSale(
+        contract,
+        shares,
+        outcome as 'YES' | 'NO',
+        unfilledBets,
+        balanceByUserId
+      )
     : getDpmProbabilityAfterSale(contract.totalShares, outcome, shares)
 }
 
 export function calculatePayout(contract: Contract, bet: Bet, outcome: string) {
-  return contract.mechanism === 'cpmm-1' && contract.outcomeType === 'BINARY'
+  return contract.mechanism === 'cpmm-1' &&
+    (contract.outcomeType === 'BINARY' ||
+      contract.outcomeType === 'PSEUDO_NUMERIC')
     ? calculateFixedPayout(contract, bet, outcome)
     : calculateDpmPayout(contract, bet, outcome)
 }
@@ -96,15 +130,60 @@ export function resolvedPayout(contract: Contract, bet: Bet) {
   const outcome = contract.resolution
   if (!outcome) throw new Error('Contract not resolved')
 
-  return contract.mechanism === 'cpmm-1' && contract.outcomeType === 'BINARY'
+  return contract.mechanism === 'cpmm-1' &&
+    (contract.outcomeType === 'BINARY' ||
+      contract.outcomeType === 'PSEUDO_NUMERIC')
     ? calculateFixedPayout(contract, bet, outcome)
     : calculateDpmPayout(contract, bet, outcome)
 }
 
+function getCpmmInvested(yourBets: Bet[]) {
+  const totalShares: { [outcome: string]: number } = {}
+  const totalSpent: { [outcome: string]: number } = {}
+
+  const sortedBets = sortBy(yourBets, 'createdTime')
+  for (const bet of sortedBets) {
+    const { outcome, shares, amount } = bet
+    if (floatingEqual(shares, 0)) continue
+
+    const spent = totalSpent[outcome] ?? 0
+    const position = totalShares[outcome] ?? 0
+
+    if (amount > 0) {
+      totalShares[outcome] = position + shares
+      totalSpent[outcome] = spent + amount
+    } else if (amount < 0) {
+      const averagePrice = position === 0 ? 0 : spent / position
+      totalShares[outcome] = position + shares
+      totalSpent[outcome] = spent + averagePrice * shares
+    }
+  }
+
+  return sum([0, ...Object.values(totalSpent)])
+}
+
+function getDpmInvested(yourBets: Bet[]) {
+  const sortedBets = sortBy(yourBets, 'createdTime')
+
+  return sumBy(sortedBets, (bet) => {
+    const { amount, sale } = bet
+
+    if (sale) {
+      const originalBet = sortedBets.find((b) => b.id === sale.betId)
+      if (originalBet) return -originalBet.amount
+      return 0
+    }
+
+    return amount
+  })
+}
+
+export type ContractBetMetrics = ReturnType<typeof getContractBetMetrics>
+
 export function getContractBetMetrics(contract: Contract, yourBets: Bet[]) {
   const { resolution } = contract
+  const isCpmm = contract.mechanism === 'cpmm-1'
 
-  let currentInvested = 0
   let totalInvested = 0
   let payout = 0
   let loan = 0
@@ -130,7 +209,6 @@ export function getContractBetMetrics(contract: Contract, yourBets: Bet[]) {
         saleValue -= amount
       }
 
-      currentInvested += amount
       loan += loanAmount ?? 0
       payout += resolution
         ? calculatePayout(contract, bet, resolution)
@@ -138,18 +216,18 @@ export function getContractBetMetrics(contract: Contract, yourBets: Bet[]) {
     }
   }
 
-  const netPayout = payout - loan
   const profit = payout + saleValue + redeemed - totalInvested
-  const profitPercent = (profit / totalInvested) * 100
+  const profitPercent = totalInvested === 0 ? 0 : (profit / totalInvested) * 100
 
+  const invested = isCpmm ? getCpmmInvested(yourBets) : getDpmInvested(yourBets)
   const hasShares = Object.values(totalShares).some(
-    (shares) => shares > 0
+    (shares) => !floatingEqual(shares, 0)
   )
 
   return {
-    invested: Math.max(0, currentInvested),
+    invested,
+    loan,
     payout,
-    netPayout,
     profit,
     profitPercent,
     totalShares,
@@ -160,8 +238,8 @@ export function getContractBetMetrics(contract: Contract, yourBets: Bet[]) {
 export function getContractBetNullMetrics() {
   return {
     invested: 0,
+    loan: 0,
     payout: 0,
-    netPayout: 0,
     profit: 0,
     profitPercent: 0,
     totalShares: {} as { [outcome: string]: number },
@@ -169,7 +247,9 @@ export function getContractBetNullMetrics() {
   }
 }
 
-export function getTopAnswer(contract: FreeResponseContract) {
+export function getTopAnswer(
+  contract: FreeResponseContract | MultipleChoiceContract
+) {
   const { answers } = contract
   const top = maxBy(
     answers?.map((answer) => ({
@@ -180,3 +260,43 @@ export function getTopAnswer(contract: FreeResponseContract) {
   )
   return top?.answer
 }
+
+export function getLargestPosition(contract: Contract, userBets: Bet[]) {
+  let yesFloorShares = 0,
+    yesShares = 0,
+    noShares = 0,
+    noFloorShares = 0
+
+  if (userBets.length === 0) {
+    return null
+  }
+  if (contract.outcomeType === 'FREE_RESPONSE') {
+    const answerCounts: { [outcome: string]: number } = {}
+    for (const bet of userBets) {
+      if (bet.outcome) {
+        if (!answerCounts[bet.outcome]) {
+          answerCounts[bet.outcome] = bet.amount
+        } else {
+          answerCounts[bet.outcome] += bet.amount
+        }
+      }
+    }
+    const majorityAnswer =
+      maxBy(Object.keys(answerCounts), (outcome) => answerCounts[outcome]) ?? ''
+    return {
+      prob: undefined,
+      shares: answerCounts[majorityAnswer] || 0,
+      outcome: majorityAnswer,
+    }
+  }
+
+  const [yesBets, noBets] = partition(userBets, (bet) => bet.outcome === 'YES')
+  yesShares = sumBy(yesBets, (bet) => bet.shares)
+  noShares = sumBy(noBets, (bet) => bet.shares)
+  yesFloorShares = Math.floor(yesShares)
+  noFloorShares = Math.floor(noShares)
+
+  const shares = yesFloorShares || noFloorShares
+  const outcome = yesFloorShares > noFloorShares ? 'YES' : 'NO'
+  return { shares, outcome }
+}

common/categories.ts

@@ -1,5 +1,7 @@
 import { difference } from 'lodash'
 
+export const CATEGORIES_GROUP_SLUG_POSTFIX = '-default'
+
 export const CATEGORIES = {
   politics: 'Politics',
   technology: 'Technology',
@@ -24,9 +26,18 @@ export const TO_CATEGORY = Object.fromEntries(
 
 export const CATEGORY_LIST = Object.keys(CATEGORIES)
 
-export const EXCLUDED_CATEGORIES: category[] = ['fun', 'manifold', 'personal']
+export const EXCLUDED_CATEGORIES: category[] = [
+  'fun',
+  'manifold',
+  'personal',
+  'covid',
+  'gaming',
+  'crypto',
+]
 
-export const DEFAULT_CATEGORIES = difference(
-  CATEGORY_LIST,
-  EXCLUDED_CATEGORIES
-)
+export const DEFAULT_CATEGORIES = difference(CATEGORY_LIST, EXCLUDED_CATEGORIES)
+
+export const DEFAULT_CATEGORY_GROUPS = DEFAULT_CATEGORIES.map((c) => ({
+  slug: c.toLowerCase() + CATEGORIES_GROUP_SLUG_POSTFIX,
+  name: CATEGORIES[c as category],
+}))

common/challenge.ts

@@ -0,0 +1,65 @@
+import { IS_PRIVATE_MANIFOLD } from './envs/constants'
+
+export type Challenge = {
+  // The link to send: https://manifold.markets/challenges/username/market-slug/{slug}
+  // Also functions as the unique id for the link.
+  slug: string
+
+  // The user that created the challenge.
+  creatorId: string
+  creatorUsername: string
+  creatorName: string
+  creatorAvatarUrl?: string
+
+  // Displayed to people claiming the challenge
+  message: string
+
+  // How much to put up
+  creatorAmount: number
+
+  // YES or NO for now
+  creatorOutcome: string
+
+  // Different than the creator
+  acceptorOutcome: string
+  acceptorAmount: number
+
+  // The probability the challenger thinks
+  creatorOutcomeProb: number
+
+  contractId: string
+  contractSlug: string
+  contractQuestion: string
+  contractCreatorUsername: string
+
+  createdTime: number
+  // If null, the link is valid forever
+  expiresTime: number | null
+
+  // How many times the challenge can be used
+  maxUses: number
+
+  // Used for simpler caching
+  acceptedByUserIds: string[]
+  // Successful redemptions of the link
+  acceptances: Acceptance[]
+
+  // TODO: will have to fill this on resolve contract
+  isResolved: boolean
+  resolutionOutcome?: string
+}
+
+export type Acceptance = {
+  // User that accepted the challenge
+  userId: string
+  userUsername: string
+  userName: string
+  userAvatarUrl: string
+
+  // The ID of the successful bet that tracks the money moved
+  betId: string
+
+  createdTime: number
+}
+
+export const CHALLENGES_ENABLED = !IS_PRIVATE_MANIFOLD

common/charity.ts

@@ -169,7 +169,7 @@ export const charities: Charity[] = [
   {
     name: "Founder's Pledge Climate Change Fund",
     website: 'https://founderspledge.com/funds/climate-change-fund',
-    photo: 'https://i.imgur.com/ZAhzHu4.png',
+    photo: 'https://i.imgur.com/9turaJW.png',
     preview:
       'The Climate Change Fund aims to sustainably reach net-zero emissions globally, while still allowing growth to free millions from energy poverty.',
     description: `The Climate Change Fund aims to sustainably reach net-zero emissions globally.
@@ -183,7 +183,7 @@ export const charities: Charity[] = [
   {
     name: "Founder's Pledge Patient Philanthropy Fund",
     website: 'https://founderspledge.com/funds/patient-philanthropy-fund',
-    photo: 'https://i.imgur.com/ZAhzHu4.png',
+    photo: 'https://i.imgur.com/LLR6CI6.png',
     preview:
       'The Patient Philanthropy Project aims to safeguard and benefit the long-term future of humanity',
     description: `The Patient Philanthropy Project focuses on how we can collectively grow our resources to support the long-term flourishing of humanity. It addresses a crucial gap: as a society, we spend much too little on safeguarding and benefiting future generations. In fact, we spend more money on ice cream each year than we do on preventing our own extinction. However, people in the future - who do not have a voice in their future survival or environment - matter. Lots of them may yet come into existence and we have the ability to positively affect their lives now, if only by making sure we avoid major catastrophes that could destroy our common future.
@@ -300,10 +300,29 @@ Future plans: We expect to focus on similar theoretical problems in alignment un
     name: 'Wild Animal Initiative',
     website: 'https://www.wildanimalinitiative.org/',
     ein: '82-2281466',
+    tags: ['Featured'] as CharityTag[],
     photo: 'https://i.imgur.com/bOVUnDm.png',
-    preview: 'We want to make life better for wild animals.',
-    description:
-      'Wild Animal Initiative (WAI) currently operates in the U.S., where they work to strengthen the animal advocacy movement through creating an academic field dedicated to wild animal welfare. They compile literature reviews, write theoretical and opinion articles, and publish research results on their website and/or in peer-reviewed journals. WAI focuses on identifying and sharing possible research avenues and connecting with more established fields. They also work with researchers from various academic and non-academic institutions to identify potential collaborators, and they recently launched a grant assistance program.',
+    preview:
+      'Our mission is to understand and improve the lives of wild animals.',
+    description: `Although the natural world is a source of great beauty and happiness, vast numbers of animals routinely face serious challenges such as disease, hunger, or natural disasters. There is no “one-size-fits-all” solution to these threats. However, even as we recognize that improving the welfare of free-ranging wild animals is difficult, we believe that humans have a responsibility to help whenever we can.
+
+Our staff explores how humans can beneficially coexist with animals through the lens of wild animal welfare. 
+
+We respect wild animals as individuals with their own needs and preferences, rather than seeing them as mere parts of ecosystems. But this approach demands a richer understanding of wild animals’ lives. 
+
+We want to take a proactive approach to managing the welfare benefits, threats, and uncertainties that are inherent to complex natural and urban environments. Yet, to take action safely, we must conduct research to understand the impacts of our actions. The transdisciplinary perspective of wild animal welfare draws upon ethics, ecology, and animal welfare science to gather the knowledge we need, facilitating evidence-based improvements to wild animals’ quality of life.
+
+Without sufficient public interest or research activity, solutions to the problems wild animals face will go undiscovered. 
+
+Wild Animal Initiative currently focuses on helping scientists, grantors, and decision-makers investigate important and understudied questions about wild animal welfare. Our work catalyzes research and applied projects that will open the door to a clearer picture of wild animals’ needs and how to enhance their well-being. Ultimately, we envision a world in which people actively choose to help wild animals — and have the knowledge they need to do so responsibly.`,
+  },
+  {
+    name: 'FYXX Foundation',
+    website: 'https://www.fyxxfoundation.org/',
+    photo: 'https://i.imgur.com/ROmWO7m.png',
+    preview:
+      'FYXX Foundation: wildlife population management, without killing.',
+    description: `The future of our planet depends on the innovations of today, and the health of our wildlife are the first indication of our successful stewardship, which we believe can be improved by safe population management utilizing fertility control instead of poison and culling.`,
   },
   {
     name: 'New Incentives',
@@ -516,6 +535,69 @@ The American Civil Liberties Union is our nation's guardian of liberty, working
 
 The U.S. Constitution and the Bill of Rights trumpet our aspirations for the kind of society that we want to be. But for much of our history, our nation failed to fulfill the promise of liberty for whole groups of people.`,
   },
+  {
+    name: 'The Center for Election Science',
+    website: 'https://electionscience.org/',
+    photo: 'https://i.imgur.com/WvdHHZa.png',
+    preview:
+      'The Center for Election Science is a nonpartisan nonprofit dedicated to empowering voters with voting methods that strengthen democracy. We believe you deserve a vote that empowers you to impact the world you live in.',
+    description: `Founded in 2011, The Center for Election Science is a national, nonpartisan nonprofit focused on voting reform.
+
+Our Mission — To empower people with voting methods that strengthen democracy.
+
+Our Vision — A world where democracies thrive because voters’ voices are heard.
+
+With an emphasis on approval voting, we bring better elections to people across the country through both advocacy and research.
+
+The movement for a better way to vote is rapidly gaining momentum as voters grow tired of election results that don’t represent the will of the people. In 2018, we worked with locals in Fargo, ND to help them become the first city in the U.S. to adopt approval voting. And in 2020, we helped grassroots activists empower the 300k people of St. Louis, MO with stronger democracy through approval voting.`,
+  },
+  {
+    name: 'Founders Pledge Global Health and Development Fund',
+    website: 'https://founderspledge.com/funds/global-health-and-development',
+    photo: 'https://i.imgur.com/EXbxH7T.png',
+    preview:
+      'Tackling the vast global inequalities in health, wealth and opportunity',
+    description: `Nearly half the world lives on less than $2.50 a day, yet giving by the world’s richest often overlooks the world’s poorest and most vulnerable. Despite the average American household being richer than 90% of the rest of the world, only 6% of US charitable giving goes to charities which work internationally.
+
+This Fund is focused on helping those who need it most, wherever that help can make the biggest difference. By building a mixed portfolio of direct and indirect interventions, such as policy work, we aim to:
+
+Improve the lives of the world's most vulnerable people.
+Reduce the number of easily preventable deaths worldwide.
+Work towards sustainable, systemic change.`,
+  },
+  {
+    name: 'YIMBY Law',
+    website: 'https://www.yimbylaw.org/',
+    photo: 'https://i.imgur.com/zlzp21Z.png',
+    preview:
+      'YIMBY Law works to make housing in California more accessible and affordable, by enforcing state housing laws.',
+    description: `
+    YIMBY Law works to make housing in California more accessible and affordable. Our method is to enforce state housing laws, and some examples are outlined below. We send letters to cities considering zoning or general plan compliant housing developments informing them of their duties under state law, and sue them when they do not comply.
+
+If you would like to support our work, you can do so by getting involved or by donating.`,
+  },
+  {
+    name: 'CaRLA',
+    website: 'https://carlaef.org/',
+    photo: 'https://i.imgur.com/IsNVTOY.png',
+    preview:
+      'The California Renters Legal Advocacy and Education Fund’s core mission is to make lasting impacts to improve the affordability and accessibility of housing to current and future Californians, especially low- and moderate-income people and communities of color.',
+    description: `
+    The California Renters Legal Advocacy and Education Fund’s core mission is to make lasting impacts to improve the affordability and accessibility of housing to current and future Californians, especially low- and moderate-income people and communities of color.
+
+CaRLA uses legal advocacy and education to ensure all cities comply with their own zoning and state housing laws and do their part to help solve the state’s housing shortage.
+
+In addition to housing impact litigation, we provide free legal aid, education and workshops, counseling and advocacy to advocates, homeowners, small developers, and city and state government officials.`,
+  },
+  {
+    name: 'Mriya',
+    website: 'https://mriya-ua.org/',
+    photo:
+      'https://firebasestorage.googleapis.com/v0/b/mantic-markets.appspot.com/o/user-images%2Fdefault%2Fci2h3hStFM.47?alt=media&token=0d2cdc3d-e4d8-4f5e-8f23-4a586b6ff637',
+    preview: 'Donate supplies to soldiers in Ukraine',
+    description:
+      'Donate supplies to soldiers in Ukraine, including tourniquets and plate carriers.',
+  },
 ].map((charity) => {
   const slug = charity.name.toLowerCase().replace(/\s/g, '-')
   return {

common/comment.ts

@@ -1,19 +1,56 @@
+import type { JSONContent } from '@tiptap/core'
+
+export type AnyCommentType = OnContract | OnGroup | OnPost
+
 // Currently, comments are created after the bet, not atomically with the bet.
 // They're uniquely identified by the pair contractId/betId.
-export type Comment = {
+export type Comment<T extends AnyCommentType = AnyCommentType> = {
   id: string
-  contractId?: string
-  groupId?: string
-  betId?: string
-  answerOutcome?: string
   replyToCommentId?: string
   userId: string
 
-  text: string
+  /** @deprecated - content now stored as JSON in content*/
+  text?: string
+  content: JSONContent
   createdTime: number
 
   // Denormalized, for rendering comments
   userName: string
   userUsername: string
   userAvatarUrl?: string
+  bountiesAwarded?: number
+} & T
+
+export type OnContract = {
+  commentType: 'contract'
+  contractId: string
+  answerOutcome?: string
+  betId?: string
+
+  // denormalized from contract
+  contractSlug: string
+  contractQuestion: string
+
+  // denormalized from bet
+  betAmount?: number
+  betOutcome?: string
+
+  // denormalized based on betting history
+  commenterPositionProb?: number // binary only
+  commenterPositionShares?: number
+  commenterPositionOutcome?: string
 }
+
+export type OnGroup = {
+  commentType: 'group'
+  groupId: string
+}
+
+export type OnPost = {
+  commentType: 'post'
+  postId: string
+}
+
+export type ContractComment = Comment<OnContract>
+export type GroupComment = Comment<OnGroup>
+export type PostComment = Comment<OnPost>

common/contract-details.ts

@@ -0,0 +1,168 @@
+import { Challenge } from './challenge'
+import { BinaryContract, Contract } from './contract'
+import { getFormattedMappedValue } from './pseudo-numeric'
+import { getProbability } from './calculate'
+import { richTextToString } from './util/parse'
+import { getCpmmProbability } from './calculate-cpmm'
+import { getDpmProbability } from './calculate-dpm'
+import { formatMoney, formatPercent } from './util/format'
+
+export function contractMetrics(contract: Contract) {
+  // eslint-disable-next-line @typescript-eslint/no-var-requires
+  const dayjs = require('dayjs')
+  const { createdTime, resolutionTime, isResolved } = contract
+
+  const createdDate = dayjs(createdTime).format('MMM D')
+
+  const resolvedDate = isResolved
+    ? dayjs(resolutionTime).format('MMM D')
+    : undefined
+
+  const volumeLabel = `${formatMoney(contract.volume)} bet`
+
+  return { volumeLabel, createdDate, resolvedDate }
+}
+
+// String version of the above, to send to the OpenGraph image generator
+export function contractTextDetails(contract: Contract) {
+  // eslint-disable-next-line @typescript-eslint/no-var-requires
+  const dayjs = require('dayjs')
+  const { closeTime, groupLinks } = contract
+  const { createdDate, resolvedDate, volumeLabel } = contractMetrics(contract)
+
+  const groupHashtags = groupLinks?.map((g) => `#${g.name.replace(/ /g, '')}`)
+
+  return (
+    `${resolvedDate ? `${createdDate} - ${resolvedDate}` : createdDate}` +
+    (closeTime
+      ? ` • ${closeTime > Date.now() ? 'Closes' : 'Closed'} ${dayjs(
+          closeTime
+        ).format('MMM D, h:mma')}`
+      : '') +
+    ` • ${volumeLabel}` +
+    (groupHashtags ? ` • ${groupHashtags.join(' ')}` : '')
+  )
+}
+
+export function getBinaryProb(contract: BinaryContract) {
+  const { pool, resolutionProbability, mechanism } = contract
+
+  return (
+    resolutionProbability ??
+    (mechanism === 'cpmm-1'
+      ? getCpmmProbability(pool, contract.p)
+      : getDpmProbability(contract.totalShares))
+  )
+}
+
+export const getOpenGraphProps = (contract: Contract) => {
+  const {
+    resolution,
+    question,
+    creatorName,
+    creatorUsername,
+    outcomeType,
+    creatorAvatarUrl,
+    description: desc,
+  } = contract
+  const probPercent =
+    outcomeType === 'BINARY'
+      ? formatPercent(getBinaryProb(contract))
+      : undefined
+
+  const numericValue =
+    outcomeType === 'PSEUDO_NUMERIC'
+      ? getFormattedMappedValue(contract)(getProbability(contract))
+      : undefined
+
+  const stringDesc = typeof desc === 'string' ? desc : richTextToString(desc)
+
+  const description = resolution
+    ? `Resolved ${resolution}. ${stringDesc}`
+    : probPercent
+    ? `${probPercent} chance. ${stringDesc}`
+    : stringDesc
+
+  return {
+    question,
+    probability: probPercent,
+    metadata: contractTextDetails(contract),
+    creatorName,
+    creatorUsername,
+    creatorAvatarUrl,
+    description,
+    numericValue,
+    resolution,
+  }
+}
+
+export type OgCardProps = {
+  question: string
+  probability?: string
+  metadata: string
+  creatorName: string
+  creatorUsername: string
+  creatorAvatarUrl?: string
+  numericValue?: string
+  resolution?: string
+}
+
+export function buildCardUrl(props: OgCardProps, challenge?: Challenge) {
+  const {
+    creatorAmount,
+    acceptances,
+    acceptorAmount,
+    creatorOutcome,
+    acceptorOutcome,
+  } = challenge || {}
+  const {
+    probability,
+    numericValue,
+    resolution,
+    creatorAvatarUrl,
+    question,
+    metadata,
+    creatorUsername,
+    creatorName,
+  } = props
+  const { userName, userAvatarUrl } = acceptances?.[0] ?? {}
+
+  const probabilityParam =
+    probability === undefined
+      ? ''
+      : `&probability=${encodeURIComponent(probability ?? '')}`
+
+  const numericValueParam =
+    numericValue === undefined
+      ? ''
+      : `&numericValue=${encodeURIComponent(numericValue ?? '')}`
+
+  const creatorAvatarUrlParam =
+    creatorAvatarUrl === undefined
+      ? ''
+      : `&creatorAvatarUrl=${encodeURIComponent(creatorAvatarUrl ?? '')}`
+
+  const challengeUrlParams = challenge
+    ? `&creatorAmount=${creatorAmount}&creatorOutcome=${creatorOutcome}` +
+      `&challengerAmount=${acceptorAmount}&challengerOutcome=${acceptorOutcome}` +
+      `&acceptedName=${userName ?? ''}&acceptedAvatarUrl=${userAvatarUrl ?? ''}`
+    : ''
+
+  const resolutionUrlParam = resolution
+    ? `&resolution=${encodeURIComponent(resolution)}`
+    : ''
+
+  // URL encode each of the props, then add them as query params
+  return (
+    `https://manifold-og-image.vercel.app/m.png` +
+    `?question=${encodeURIComponent(question)}` +
+    probabilityParam +
+    numericValueParam +
+    `&metadata=${encodeURIComponent(metadata)}` +
+    `&creatorName=${encodeURIComponent(creatorName)}` +
+    creatorAvatarUrlParam +
+    `&creatorUsername=${encodeURIComponent(creatorUsername)}` +
+    challengeUrlParams +
+    resolutionUrlParam
+  )
+}

common/contract.ts

@@ -1,14 +1,23 @@
 import { Answer } from './answer'
 import { Fees } from './fees'
-import { GroupDetails } from 'common/group'
+import { JSONContent } from '@tiptap/core'
+import { GroupLink } from 'common/group'
 
 export type AnyMechanism = DPM | CPMM
-export type AnyOutcomeType = Binary | FreeResponse | Numeric
+export type AnyOutcomeType =
+  | Binary
+  | MultipleChoice
+  | PseudoNumeric
+  | FreeResponse
+  | Numeric
+
 export type AnyContractType =
   | (CPMM & Binary)
+  | (CPMM & PseudoNumeric)
   | (DPM & Binary)
   | (DPM & FreeResponse)
   | (DPM & Numeric)
+  | (DPM & MultipleChoice)
 
 export type Contract<T extends AnyContractType = AnyContractType> = {
   id: string
@@ -20,12 +29,10 @@ export type Contract<T extends AnyContractType = AnyContractType> = {
   creatorAvatarUrl?: string
 
   question: string
-  description: string // More info about what the contract is about
+  description: string | JSONContent // More info about what the contract is about
   tags: string[]
   lowercaseTags: string[]
-  visibility: 'public' | 'unlisted'
-
-  groupDetails?: GroupDetails[] // Starting with one group per contract
+  visibility: visibility
 
   createdTime: number // Milliseconds since epoch
   lastUpdatedTime?: number // Updated on new bet or comment
@@ -36,19 +43,37 @@ export type Contract<T extends AnyContractType = AnyContractType> = {
   isResolved: boolean
   resolutionTime?: number // When the contract creator resolved the market
   resolution?: string
+  resolutionProbability?: number
 
   closeEmailsSent?: number
 
   volume: number
   volume24Hours: number
   volume7Days: number
+  elasticity: number
 
   collectedFees: Fees
+
+  groupSlugs?: string[]
+  groupLinks?: GroupLink[]
+  uniqueBettorIds?: string[]
+  uniqueBettorCount?: number
+  popularityScore?: number
+  dailyScore?: number
+  followerCount?: number
+  featuredOnHomeRank?: number
+  likedByUserIds?: string[]
+  likedByUserCount?: number
+  flaggedByUsernames?: string[]
+  openCommentBounties?: number
+  unlistedById?: string
 } & T
 
 export type BinaryContract = Contract & Binary
+export type PseudoNumericContract = Contract & PseudoNumeric
 export type NumericContract = Contract & Numeric
 export type FreeResponseContract = Contract & FreeResponse
+export type MultipleChoiceContract = Contract & MultipleChoice
 export type DPMContract = Contract & DPM
 export type CPMMContract = Contract & CPMM
 export type DPMBinaryContract = BinaryContract & DPM
@@ -67,7 +92,14 @@ export type CPMM = {
   mechanism: 'cpmm-1'
   pool: { [outcome: string]: number }
   p: number // probability constant in y^p * n^(1-p) = k
-  totalLiquidity: number // in M$
+  totalLiquidity: number // for historical reasons, this the total subsidy amount added in M$
+  subsidyPool: number // current value of subsidy pool in M$
+  prob: number
+  probChanges: {
+    day: number
+    week: number
+    month: number
+  }
 }
 
 export type Binary = {
@@ -77,6 +109,18 @@ export type Binary = {
   resolution?: resolution
 }
 
+export type PseudoNumeric = {
+  outcomeType: 'PSEUDO_NUMERIC'
+  min: number
+  max: number
+  isLogScale: boolean
+  resolutionValue?: number
+
+  // same as binary market; map everything to probability
+  initialProbability: number
+  resolutionProbability?: number
+}
+
 export type FreeResponse = {
   outcomeType: 'FREE_RESPONSE'
   answers: Answer[] // Used for outcomeType 'FREE_RESPONSE'.
@@ -84,6 +128,13 @@ export type FreeResponse = {
   resolutions?: { [outcome: string]: number } // Used for MKT resolution.
 }
 
+export type MultipleChoice = {
+  outcomeType: 'MULTIPLE_CHOICE'
+  answers: Answer[]
+  resolution?: string | 'MKT' | 'CANCEL'
+  resolutions?: { [outcome: string]: number } // Used for MKT resolution.
+}
+
 export type Numeric = {
   outcomeType: 'NUMERIC'
   bucketCount: number
@@ -96,10 +147,19 @@ export type Numeric = {
 export type outcomeType = AnyOutcomeType['outcomeType']
 export type resolution = 'YES' | 'NO' | 'MKT' | 'CANCEL'
 export const RESOLUTIONS = ['YES', 'NO', 'MKT', 'CANCEL'] as const
-export const OUTCOME_TYPES = ['BINARY', 'FREE_RESPONSE', 'NUMERIC'] as const
+export const OUTCOME_TYPES = [
+  'BINARY',
+  'MULTIPLE_CHOICE',
+  'FREE_RESPONSE',
+  'PSEUDO_NUMERIC',
+  'NUMERIC',
+] as const
 
-export const MAX_QUESTION_LENGTH = 480
-export const MAX_DESCRIPTION_LENGTH = 10000
+export const MAX_QUESTION_LENGTH = 240
+export const MAX_DESCRIPTION_LENGTH = 16000
 export const MAX_TAG_LENGTH = 60
 
 export const CPMM_MIN_POOL_QTY = 0.01
+
+export type visibility = 'public' | 'unlisted'
+export const VISIBILITIES = ['public', 'unlisted'] as const

common/economy.ts

@@ -0,0 +1,20 @@
+import { ENV_CONFIG } from './envs/constants'
+
+const econ = ENV_CONFIG.economy
+
+export const FIXED_ANTE = econ?.FIXED_ANTE ?? 100
+
+export const STARTING_BALANCE = econ?.STARTING_BALANCE ?? 1000
+// for sus users, i.e. multiple sign ups for same person
+export const SUS_STARTING_BALANCE = econ?.SUS_STARTING_BALANCE ?? 10
+export const REFERRAL_AMOUNT = econ?.REFERRAL_AMOUNT ?? 250
+
+export const UNIQUE_BETTOR_BONUS_AMOUNT = econ?.UNIQUE_BETTOR_BONUS_AMOUNT ?? 10
+export const BETTING_STREAK_BONUS_AMOUNT =
+  econ?.BETTING_STREAK_BONUS_AMOUNT ?? 5
+export const BETTING_STREAK_BONUS_MAX = econ?.BETTING_STREAK_BONUS_MAX ?? 25
+export const BETTING_STREAK_RESET_HOUR = econ?.BETTING_STREAK_RESET_HOUR ?? 7
+export const FREE_MARKETS_PER_USER_MAX = econ?.FREE_MARKETS_PER_USER_MAX ?? 5
+export const COMMENT_BOUNTY_AMOUNT = econ?.COMMENT_BOUNTY_AMOUNT ?? 250
+
+export const UNIQUE_BETTOR_LIQUIDITY = 20

common/envs/constants.ts

@@ -21,18 +21,38 @@ export function isWhitelisted(email?: string) {
 }
 
 // TODO: Before open sourcing, we should turn these into env vars
-export function isAdmin(email: string) {
+export function isAdmin(email?: string) {
+  if (!email) {
+    return false
+  }
   return ENV_CONFIG.adminEmails.includes(email)
 }
 
+export function isManifoldId(userId: string) {
+  return userId === 'IPTOzEqrpkWmEzh6hwvAyY9PqFb2'
+}
+
 export const DOMAIN = ENV_CONFIG.domain
 export const FIREBASE_CONFIG = ENV_CONFIG.firebaseConfig
 export const PROJECT_ID = ENV_CONFIG.firebaseConfig.projectId
 export const IS_PRIVATE_MANIFOLD = ENV_CONFIG.visibility === 'PRIVATE'
 
+export const AUTH_COOKIE_NAME = `FBUSER_${PROJECT_ID.toUpperCase().replace(
+  /-/g,
+  '_'
+)}`
+
 // Manifold's domain or any subdomains thereof
 export const CORS_ORIGIN_MANIFOLD = new RegExp(
   '^https?://(?:[a-zA-Z0-9\\-]+\\.)*' + escapeRegExp(ENV_CONFIG.domain) + '$'
 )
+// Vercel deployments, used for testing.
+export const CORS_ORIGIN_VERCEL = new RegExp(
+  '^https?://[a-zA-Z0-9\\-]+' + escapeRegExp('mantic.vercel.app') + '$'
+)
 // Any localhost server on any port
 export const CORS_ORIGIN_LOCALHOST = /^http:\/\/localhost:\d+$/
+
+export function firestoreConsolePath(contractId: string) {
+  return `https://console.firebase.google.com/project/${PROJECT_ID}/firestore/data/~2Fcontracts~2F${contractId}`
+}

common/envs/dev.ts

@@ -2,6 +2,7 @@ import { EnvConfig, PROD_CONFIG } from './prod'
 
 export const DEV_CONFIG: EnvConfig = {
   ...PROD_CONFIG,
+  domain: 'dev.manifold.markets',
   firebaseConfig: {
     apiKey: 'AIzaSyBoq3rzUa8Ekyo3ZaTnlycQYPRCA26VpOw',
     authDomain: 'dev-mantic-markets.firebaseapp.com',
@@ -12,12 +13,9 @@ export const DEV_CONFIG: EnvConfig = {
     appId: '1:134303100058:web:27f9ea8b83347251f80323',
     measurementId: 'G-YJC9E37P37',
   },
-  functionEndpoints: {
-    placebet: 'https://placebet-w3txbmd3ba-uc.a.run.app',
-    sellshares: 'https://sellshares-w3txbmd3ba-uc.a.run.app',
-    sellbet: 'https://sellbet-w3txbmd3ba-uc.a.run.app',
-    createmarket: 'https://createmarket-w3txbmd3ba-uc.a.run.app',
-    creategroup: 'https://creategroup-w3txbmd3ba-uc.a.run.app',
-  },
+  cloudRunId: 'w3txbmd3ba',
+  cloudRunRegion: 'uc',
   amplitudeApiKey: 'fd8cbfd964b9a205b8678a39faae71b3',
+  twitchBotEndpoint: 'https://dev-twitch-bot.manifold.markets',
+  sprigEnvironmentId: 'Tu7kRZPm7daP',
 }

common/envs/prod.ts

@@ -1,15 +1,14 @@
-export type V2CloudFunction =
-  | 'placebet'
-  | 'sellbet'
-  | 'sellshares'
-  | 'createmarket'
-  | 'creategroup'
-
 export type EnvConfig = {
   domain: string
   firebaseConfig: FirebaseConfig
-  functionEndpoints: Record<V2CloudFunction, string>
   amplitudeApiKey?: string
+  twitchBotEndpoint?: string
+  sprigEnvironmentId?: string
+
+  // IDs for v2 cloud functions -- find these by deploying a cloud function and
+  // examining the URL, https://[name]-[cloudRunId]-[cloudRunRegion].a.run.app
+  cloudRunId: string
+  cloudRunRegion: string
 
   // Access controls
   adminEmails: string[]
@@ -18,16 +17,38 @@ export type EnvConfig = {
 
   // Branding
   moneyMoniker: string // e.g. 'M$'
+  bettor?: string // e.g. 'bettor' or 'predictor'
+  presentBet?: string // e.g. 'bet' or 'predict'
+  pastBet?: string // e.g. 'bet' or 'prediction'
   faviconPath?: string // Should be a file in /public
   navbarLogoPath?: string
   newQuestionPlaceholders: string[]
+
+  economy?: Economy
+}
+
+export type Economy = {
+  FIXED_ANTE?: number
+
+  STARTING_BALANCE?: number
+  SUS_STARTING_BALANCE?: number
+
+  REFERRAL_AMOUNT?: number
+
+  UNIQUE_BETTOR_BONUS_AMOUNT?: number
+
+  BETTING_STREAK_BONUS_AMOUNT?: number
+  BETTING_STREAK_BONUS_MAX?: number
+  BETTING_STREAK_RESET_HOUR?: number
+  FREE_MARKETS_PER_USER_MAX?: number
+  COMMENT_BOUNTY_AMOUNT?: number
 }
 
 type FirebaseConfig = {
   apiKey: string
   authDomain: string
   projectId: string
-  region: string
+  region?: string
   storageBucket: string
   messagingSenderId: string
   appId: string
@@ -37,6 +58,7 @@ type FirebaseConfig = {
 export const PROD_CONFIG: EnvConfig = {
   domain: 'manifold.markets',
   amplitudeApiKey: '2d6509fd4185ebb8be29709842752a15',
+  sprigEnvironmentId: 'sQcrq9TDqkib',
 
   firebaseConfig: {
     apiKey: 'AIzaSyDp3J57vLeAZCzxLD-vcPaGIkAmBoGOSYw',
@@ -48,23 +70,26 @@ export const PROD_CONFIG: EnvConfig = {
     appId: '1:128925704902:web:f61f86944d8ffa2a642dc7',
     measurementId: 'G-SSFK1Q138D',
   },
-  functionEndpoints: {
-    placebet: 'https://placebet-nggbo3neva-uc.a.run.app',
-    sellshares: 'https://sellshares-nggbo3neva-uc.a.run.app',
-    sellbet: 'https://sellbet-nggbo3neva-uc.a.run.app',
-    createmarket: 'https://createmarket-nggbo3neva-uc.a.run.app',
-    creategroup: 'https://creategroup-nggbo3neva-uc.a.run.app',
-  },
+  twitchBotEndpoint: 'https://twitch-bot.manifold.markets',
+  cloudRunId: 'nggbo3neva',
+  cloudRunRegion: 'uc',
   adminEmails: [
     'akrolsmir@gmail.com', // Austin
     'jahooma@gmail.com', // James
     'taowell@gmail.com', // Stephen
     'abc.sinclair@gmail.com', // Sinclair
     'manticmarkets@gmail.com', // Manifold
+    'iansphilips@gmail.com', // Ian
+    'd4vidchee@gmail.com', // D4vid
+    'federicoruizcassarino@gmail.com', // Fede
+    'ingawei@gmail.com', //Inga
   ],
   visibility: 'PUBLIC',
 
   moneyMoniker: 'M$',
+  bettor: 'trader',
+  pastBet: 'trade',
+  presentBet: 'trade',
   navbarLogoPath: '',
   faviconPath: '/favicon.ico',
   newQuestionPlaceholders: [

common/envs/theoremone.ts

@@ -12,14 +12,8 @@ export const THEOREMONE_CONFIG: EnvConfig = {
     appId: '1:698012149198:web:b342af75662831aa84b79f',
     measurementId: 'G-Y3EZ1WNT6E',
   },
-  // TODO: fill in real endpoints for T1
-  functionEndpoints: {
-    placebet: 'https://placebet-nggbo3neva-uc.a.run.app',
-    sellshares: 'https://sellshares-nggbo3neva-uc.a.run.app',
-    sellbet: 'https://sellbet-nggbo3neva-uc.a.run.app',
-    createmarket: 'https://createmarket-nggbo3neva-uc.a.run.app',
-    creategroup: 'https://creategroup-nggbo3neva-uc.a.run.app',
-  },
+  cloudRunId: 'nggbo3neva', // TODO: fill in real ID for T1
+  cloudRunRegion: 'uc',
   adminEmails: [...PROD_CONFIG.adminEmails, 'david.glidden@theoremone.co'],
   whitelistEmail: '@theoremone.co',
   moneyMoniker: 'T$',

common/fees.ts

@@ -1,9 +1,11 @@
+export const FLAT_TRADE_FEE = 0.1 // M$0.1
+
 export const PLATFORM_FEE = 0
-export const CREATOR_FEE = 0.1
+export const CREATOR_FEE = 0
 export const LIQUIDITY_FEE = 0
 
-export const DPM_PLATFORM_FEE = 0.01
-export const DPM_CREATOR_FEE = 0.04
+export const DPM_PLATFORM_FEE = 0.0
+export const DPM_CREATOR_FEE = 0.0
 export const DPM_FEES = DPM_PLATFORM_FEE + DPM_CREATOR_FEE
 
 export type Fees = {

common/follow.ts

@@ -2,3 +2,8 @@ export type Follow = {
   userId: string
   timestamp: number
 }
+
+export type ContractFollow = {
+  id: string // user id
+  createdTime: number
+}

common/globalConfig.ts

@@ -0,0 +1,3 @@
+export type GlobalConfig = {
+  pinnedItems: { itemId: string; type: 'post' | 'contract' }[]
+}

common/group.ts

@@ -6,16 +6,37 @@ export type Group = {
   creatorId: string // User id
   createdTime: number
   mostRecentActivityTime: number
-  memberIds: string[] // User ids
   anyoneCanJoin: boolean
-  contractIds: string[]
+  totalContracts: number
+  totalMembers: number
+  aboutPostId?: string
+  postIds: string[]
+  chatDisabled?: boolean
+  mostRecentContractAddedTime?: number
+  cachedLeaderboard?: {
+    topTraders: {
+      userId: string
+      score: number
+    }[]
+    topCreators: {
+      userId: string
+      score: number
+    }[]
   }
+  pinnedItems: { itemId: string; type: 'post' | 'contract' }[]
+}
+
 export const MAX_GROUP_NAME_LENGTH = 75
 export const MAX_ABOUT_LENGTH = 140
 export const MAX_ID_LENGTH = 60
+export const NEW_USER_GROUP_SLUGS = ['updates', 'bugs', 'welcome']
+export const GROUP_CHAT_SLUG = 'chat'
 
-export type GroupDetails = {
+export type GroupLink = {
+  slug: string
+  name: string
   groupId: string
-  groupSlug: string
-  groupName: string
+  createdTime: number
+  userId?: string
 }
+export type GroupContractDoc = { contractId: string; createdTime: number }

common/like.ts

@@ -0,0 +1,9 @@
+export type Like = {
+  id: string // will be id of the object liked, i.e. contract.id
+  userId: string
+  type: 'contract' | 'post'
+  createdTime: number
+  tipTxnId?: string // only holds most recent tip txn id
+}
+export const LIKE_TIP_AMOUNT = 10
+export const TIP_UNDO_DURATION = 2000

common/loans.ts

@@ -0,0 +1,138 @@
+import { Dictionary, groupBy, sumBy, minBy } from 'lodash'
+import { Bet } from './bet'
+import { getContractBetMetrics } from './calculate'
+import {
+  Contract,
+  CPMMContract,
+  FreeResponseContract,
+  MultipleChoiceContract,
+} from './contract'
+import { PortfolioMetrics, User } from './user'
+import { filterDefined } from './util/array'
+
+const LOAN_DAILY_RATE = 0.02
+
+const calculateNewLoan = (investedValue: number, loanTotal: number) => {
+  const netValue = investedValue - loanTotal
+  return netValue * LOAN_DAILY_RATE
+}
+
+export const getLoanUpdates = (
+  users: User[],
+  contractsById: { [contractId: string]: Contract },
+  portfolioByUser: { [userId: string]: PortfolioMetrics | undefined },
+  betsByUser: { [userId: string]: Bet[] }
+) => {
+  const eligibleUsers = filterDefined(
+    users.map((user) =>
+      isUserEligibleForLoan(portfolioByUser[user.id]) ? user : undefined
+    )
+  )
+
+  const betUpdates = eligibleUsers
+    .map((user) => {
+      const updates = calculateLoanBetUpdates(
+        betsByUser[user.id] ?? [],
+        contractsById
+      ).betUpdates
+      return updates.map((update) => ({ ...update, user }))
+    })
+    .flat()
+
+  const updatesByUser = groupBy(betUpdates, (update) => update.userId)
+  const userPayouts = Object.values(updatesByUser).map((updates) => {
+    return {
+      user: updates[0].user,
+      payout: sumBy(updates, (update) => update.newLoan),
+    }
+  })
+
+  return {
+    betUpdates,
+    userPayouts,
+  }
+}
+
+const isUserEligibleForLoan = (portfolio: PortfolioMetrics | undefined) => {
+  if (!portfolio) return true
+
+  const { balance, investmentValue } = portfolio
+  return balance + investmentValue > 0
+}
+
+const calculateLoanBetUpdates = (
+  bets: Bet[],
+  contractsById: Dictionary<Contract>
+) => {
+  const betsByContract = groupBy(bets, (bet) => bet.contractId)
+  const contracts = filterDefined(
+    Object.keys(betsByContract).map((contractId) => contractsById[contractId])
+  ).filter((c) => !c.isResolved)
+
+  const betUpdates = filterDefined(
+    contracts
+      .map((c) => {
+        if (c.mechanism === 'cpmm-1') {
+          return getBinaryContractLoanUpdate(c, betsByContract[c.id])
+        } else if (
+          c.outcomeType === 'FREE_RESPONSE' ||
+          c.outcomeType === 'MULTIPLE_CHOICE'
+        )
+          return getFreeResponseContractLoanUpdate(c, betsByContract[c.id])
+        else {
+          // Unsupported contract / mechanism for loans.
+          return []
+        }
+      })
+      .flat()
+  )
+
+  const totalNewLoan = sumBy(betUpdates, (loanUpdate) => loanUpdate.loanTotal)
+
+  return {
+    totalNewLoan,
+    betUpdates,
+  }
+}
+
+const getBinaryContractLoanUpdate = (contract: CPMMContract, bets: Bet[]) => {
+  const { invested } = getContractBetMetrics(contract, bets)
+  const loanAmount = sumBy(bets, (bet) => bet.loanAmount ?? 0)
+  const oldestBet = minBy(bets, (bet) => bet.createdTime)
+
+  const newLoan = calculateNewLoan(invested, loanAmount)
+  if (!isFinite(newLoan) || newLoan <= 0 || !oldestBet) return undefined
+
+  const loanTotal = (oldestBet.loanAmount ?? 0) + newLoan
+
+  return {
+    userId: oldestBet.userId,
+    contractId: contract.id,
+    betId: oldestBet.id,
+    newLoan,
+    loanTotal,
+  }
+}
+
+const getFreeResponseContractLoanUpdate = (
+  contract: FreeResponseContract | MultipleChoiceContract,
+  bets: Bet[]
+) => {
+  const openBets = bets.filter((bet) => !bet.isSold && !bet.sale)
+
+  return openBets.map((bet) => {
+    const loanAmount = bet.loanAmount ?? 0
+    const newLoan = calculateNewLoan(bet.amount, loanAmount)
+    const loanTotal = loanAmount + newLoan
+
+    if (!isFinite(newLoan) || newLoan <= 0) return undefined
+
+    return {
+      userId: bet.userId,
+      contractId: contract.id,
+      betId: bet.id,
+      newLoan,
+      loanTotal,
+    }
+  })
+}

common/manalink.ts

@@ -0,0 +1,35 @@
+export type Manalink = {
+  // The link to send: https://manifold.markets/send/{slug}
+  // Also functions as the unique id for the link.
+  slug: string
+
+  // Note: we assume both fromId and toId are of SourceType 'USER'
+  fromId: string
+
+  // Displayed to people claiming the link
+  message: string
+
+  // How much to send with the link
+  amount: number
+  token: 'M$' // TODO: could send eg YES shares too??
+
+  createdTime: number
+  // If null, the link is valid forever
+  expiresTime: number | null
+  // If null, the link can be used infinitely
+  maxUses: number | null
+
+  // Used for simpler caching
+  claimedUserIds: string[]
+  // Successful redemptions of the link
+  claims: Claim[]
+}
+
+export type Claim = {
+  toId: string
+
+  // The ID of the successful txn that tracks the money moved
+  txnId: string
+
+  claimedTime: number
+}

common/new-bet.ts

@@ -1,6 +1,6 @@
-import { sumBy } from 'lodash'
+import { sortBy, sum, sumBy } from 'lodash'
 
-import { Bet, MAX_LOAN_PER_CONTRACT, NumericBet } from './bet'
+import { Bet, fill, LimitBet, NumericBet } from './bet'
 import {
   calculateDpmShares,
   getDpmProbability,
@@ -8,20 +8,34 @@ import {
   getNumericBets,
   calculateNumericDpmShares,
 } from './calculate-dpm'
-import { calculateCpmmPurchase, getCpmmProbability } from './calculate-cpmm'
+import {
+  calculateCpmmAmountToProb,
+  calculateCpmmPurchase,
+  CpmmState,
+  getCpmmProbability,
+} from './calculate-cpmm'
 import {
   CPMMBinaryContract,
   DPMBinaryContract,
-  FreeResponseContract,
+  DPMContract,
   NumericContract,
+  PseudoNumericContract,
 } from './contract'
 import { noFees } from './fees'
-import { addObjects } from './util/object'
+import { addObjects, removeUndefinedProps } from './util/object'
 import { NUMERIC_FIXED_VAR } from './numeric-constants'
+import {
+  floatingEqual,
+  floatingGreaterEqual,
+  floatingLesserEqual,
+} from './util/math'
 
-export type CandidateBet<T extends Bet> = Omit<T, 'id' | 'userId'>
+export type CandidateBet<T extends Bet = Bet> = Omit<
+  T,
+  'id' | 'userId' | 'userAvatarUrl' | 'userName' | 'userUsername'
+>
 export type BetInfo = {
-  newBet: CandidateBet<Bet>
+  newBet: CandidateBet
   newPool?: { [outcome: string]: number }
   newTotalShares?: { [outcome: string]: number }
   newTotalBets?: { [outcome: string]: number }
@@ -29,45 +43,261 @@ export type BetInfo = {
   newP?: number
 }
 
-export const getNewBinaryCpmmBetInfo = (
-  outcome: 'YES' | 'NO',
+const computeFill = (
   amount: number,
-  contract: CPMMBinaryContract,
-  loanAmount: number
+  outcome: 'YES' | 'NO',
+  limitProb: number | undefined,
+  cpmmState: CpmmState,
+  matchedBet: LimitBet | undefined
 ) => {
-  const { shares, newPool, newP, fees } = calculateCpmmPurchase(
-    contract,
-    amount,
-    outcome
-  )
+  const prob = getCpmmProbability(cpmmState.pool, cpmmState.p)
 
-  const { pool, p, totalLiquidity } = contract
-  const probBefore = getCpmmProbability(pool, p)
-  const probAfter = getCpmmProbability(newPool, newP)
-
-  const newBet: CandidateBet<Bet> = {
-    contractId: contract.id,
-    amount,
-    shares,
-    outcome,
-    fees,
-    loanAmount,
-    probBefore,
-    probAfter,
-    createdTime: Date.now(),
+  if (
+    limitProb !== undefined &&
+    (outcome === 'YES'
+      ? floatingGreaterEqual(prob, limitProb) &&
+        (matchedBet?.limitProb ?? 1) > limitProb
+      : floatingLesserEqual(prob, limitProb) &&
+        (matchedBet?.limitProb ?? 0) < limitProb)
+  ) {
+    // No fill.
+    return undefined
   }
 
-  const { liquidityFee } = fees
-  const newTotalLiquidity = (totalLiquidity ?? 0) + liquidityFee
+  const timestamp = Date.now()
 
-  return { newBet, newPool, newP, newTotalLiquidity }
+  if (
+    !matchedBet ||
+    (outcome === 'YES'
+      ? !floatingGreaterEqual(prob, matchedBet.limitProb)
+      : !floatingLesserEqual(prob, matchedBet.limitProb))
+  ) {
+    // Fill from pool.
+    const limit = !matchedBet
+      ? limitProb
+      : outcome === 'YES'
+      ? Math.min(matchedBet.limitProb, limitProb ?? 1)
+      : Math.max(matchedBet.limitProb, limitProb ?? 0)
+
+    const buyAmount =
+      limit === undefined
+        ? amount
+        : Math.min(amount, calculateCpmmAmountToProb(cpmmState, limit, outcome))
+
+    const { shares, newPool, newP, fees } = calculateCpmmPurchase(
+      cpmmState,
+      buyAmount,
+      outcome
+    )
+    const newState = { pool: newPool, p: newP }
+
+    return {
+      maker: {
+        matchedBetId: null,
+        shares,
+        amount: buyAmount,
+        state: newState,
+        fees,
+        timestamp,
+      },
+      taker: {
+        matchedBetId: null,
+        shares,
+        amount: buyAmount,
+        timestamp,
+      },
+    }
+  }
+
+  // Fill from matchedBet.
+  const matchRemaining = matchedBet.orderAmount - matchedBet.amount
+  const shares = Math.min(
+    amount /
+      (outcome === 'YES' ? matchedBet.limitProb : 1 - matchedBet.limitProb),
+    matchRemaining /
+      (outcome === 'YES' ? 1 - matchedBet.limitProb : matchedBet.limitProb)
+  )
+
+  const maker = {
+    bet: matchedBet,
+    matchedBetId: 'taker',
+    amount:
+      shares *
+      (outcome === 'YES' ? 1 - matchedBet.limitProb : matchedBet.limitProb),
+    shares,
+    timestamp,
+  }
+  const taker = {
+    matchedBetId: matchedBet.id,
+    amount:
+      shares *
+      (outcome === 'YES' ? matchedBet.limitProb : 1 - matchedBet.limitProb),
+    shares,
+    timestamp,
+  }
+  return { maker, taker }
+}
+
+export const computeFills = (
+  outcome: 'YES' | 'NO',
+  betAmount: number,
+  state: CpmmState,
+  limitProb: number | undefined,
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
+) => {
+  if (isNaN(betAmount)) {
+    throw new Error('Invalid bet amount: ${betAmount}')
+  }
+  if (isNaN(limitProb ?? 0)) {
+    throw new Error('Invalid limitProb: ${limitProb}')
+  }
+
+  const sortedBets = sortBy(
+    unfilledBets.filter((bet) => bet.outcome !== outcome),
+    (bet) => (outcome === 'YES' ? bet.limitProb : -bet.limitProb),
+    (bet) => bet.createdTime
+  )
+
+  const takers: fill[] = []
+  const makers: {
+    bet: LimitBet
+    amount: number
+    shares: number
+    timestamp: number
+  }[] = []
+  const ordersToCancel: LimitBet[] = []
+
+  let amount = betAmount
+  let cpmmState = { pool: state.pool, p: state.p }
+  let totalFees = noFees
+  const currentBalanceByUserId = { ...balanceByUserId }
+
+  let i = 0
+  while (true) {
+    const matchedBet: LimitBet | undefined = sortedBets[i]
+    const fill = computeFill(amount, outcome, limitProb, cpmmState, matchedBet)
+    if (!fill) break
+
+    const { taker, maker } = fill
+
+    if (maker.matchedBetId === null) {
+      // Matched against pool.
+      cpmmState = maker.state
+      totalFees = addObjects(totalFees, maker.fees)
+      takers.push(taker)
+    } else {
+      // Matched against bet.
+      i++
+      const { userId } = maker.bet
+      const makerBalance = currentBalanceByUserId[userId]
+
+      if (floatingGreaterEqual(makerBalance, maker.amount)) {
+        currentBalanceByUserId[userId] = makerBalance - maker.amount
+      } else {
+        // Insufficient balance. Cancel maker bet.
+        ordersToCancel.push(maker.bet)
+        continue
+      }
+
+      takers.push(taker)
+      makers.push(maker)
+    }
+
+    amount -= taker.amount
+
+    if (floatingEqual(amount, 0)) break
+  }
+
+  return { takers, makers, totalFees, cpmmState, ordersToCancel }
+}
+
+export const getBinaryCpmmBetInfo = (
+  outcome: 'YES' | 'NO',
+  betAmount: number,
+  contract: CPMMBinaryContract | PseudoNumericContract,
+  limitProb: number | undefined,
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
+) => {
+  const { pool, p } = contract
+  const { takers, makers, cpmmState, totalFees, ordersToCancel } = computeFills(
+    outcome,
+    betAmount,
+    { pool, p },
+    limitProb,
+    unfilledBets,
+    balanceByUserId
+  )
+  const probBefore = getCpmmProbability(contract.pool, contract.p)
+  const probAfter = getCpmmProbability(cpmmState.pool, cpmmState.p)
+
+  const takerAmount = sumBy(takers, 'amount')
+  const takerShares = sumBy(takers, 'shares')
+  const isFilled = floatingEqual(betAmount, takerAmount)
+
+  const newBet: CandidateBet = removeUndefinedProps({
+    orderAmount: betAmount,
+    amount: takerAmount,
+    shares: takerShares,
+    limitProb,
+    isFilled,
+    isCancelled: false,
+    fills: takers,
+    contractId: contract.id,
+    outcome,
+    probBefore,
+    probAfter,
+    loanAmount: 0,
+    createdTime: Date.now(),
+    fees: totalFees,
+  })
+
+  const { liquidityFee } = totalFees
+  const newTotalLiquidity = (contract.totalLiquidity ?? 0) + liquidityFee
+
+  return {
+    newBet,
+    newPool: cpmmState.pool,
+    newP: cpmmState.p,
+    newTotalLiquidity,
+    makers,
+    ordersToCancel,
+  }
+}
+
+export const getBinaryBetStats = (
+  outcome: 'YES' | 'NO',
+  betAmount: number,
+  contract: CPMMBinaryContract | PseudoNumericContract,
+  limitProb: number,
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number }
+) => {
+  const { newBet } = getBinaryCpmmBetInfo(
+    outcome,
+    betAmount ?? 0,
+    contract,
+    limitProb,
+    unfilledBets,
+    balanceByUserId
+  )
+  const remainingMatched =
+    ((newBet.orderAmount ?? 0) - newBet.amount) /
+    (outcome === 'YES' ? limitProb : 1 - limitProb)
+  const currentPayout = newBet.shares + remainingMatched
+
+  const currentReturn = betAmount ? (currentPayout - betAmount) / betAmount : 0
+
+  const totalFees = sum(Object.values(newBet.fees))
+
+  return { currentPayout, currentReturn, totalFees, newBet }
 }
 
 export const getNewBinaryDpmBetInfo = (
   outcome: 'YES' | 'NO',
   amount: number,
-  contract: DPMBinaryContract,
-  loanAmount: number
+  contract: DPMBinaryContract
 ) => {
   const { YES: yesPool, NO: noPool } = contract.pool
 
@@ -95,10 +325,10 @@ export const getNewBinaryDpmBetInfo = (
   const probBefore = getDpmProbability(contract.totalShares)
   const probAfter = getDpmProbability(newTotalShares)
 
-  const newBet: CandidateBet<Bet> = {
+  const newBet: CandidateBet = {
     contractId: contract.id,
     amount,
-    loanAmount,
+    loanAmount: 0,
     shares,
     outcome,
     probBefore,
@@ -113,8 +343,7 @@ export const getNewBinaryDpmBetInfo = (
 export const getNewMultiBetInfo = (
   outcome: string,
   amount: number,
-  contract: FreeResponseContract,
-  loanAmount: number
+  contract: DPMContract
 ) => {
   const { pool, totalShares, totalBets } = contract
 
@@ -132,10 +361,10 @@ export const getNewMultiBetInfo = (
   const probBefore = getDpmOutcomeProbability(totalShares, outcome)
   const probAfter = getDpmOutcomeProbability(newTotalShares, outcome)
 
-  const newBet: CandidateBet<Bet> = {
+  const newBet: CandidateBet = {
     contractId: contract.id,
     amount,
-    loanAmount,
+    loanAmount: 0,
     shares,
     outcome,
     probBefore,
@@ -189,13 +418,3 @@ export const getNumericBetsInfo = (
 
   return { newBet, newPool, newTotalShares, newTotalBets }
 }
-
-export const getLoanAmount = (yourBets: Bet[], newBetAmount: number) => {
-  const openBets = yourBets.filter((bet) => !bet.isSold && !bet.sale)
-  const prevLoanAmount = sumBy(openBets, (bet) => bet.loanAmount ?? 0)
-  const loanAmount = Math.min(
-    newBetAmount,
-    MAX_LOAN_PER_CONTRACT - prevLoanAmount
-  )
-  return loanAmount
-}

common/new-contract.ts

@@ -5,13 +5,15 @@ import {
   CPMM,
   DPM,
   FreeResponse,
+  MultipleChoice,
   Numeric,
   outcomeType,
+  PseudoNumeric,
+  visibility,
 } from './contract'
 import { User } from './user'
-import { parseTags } from './util/parse'
 import { removeUndefinedProps } from './util/object'
-import { GroupDetails } from 'common/group'
+import { JSONContent } from '@tiptap/core'
 
 export function getNewContract(
   id: string,
@@ -19,7 +21,7 @@ export function getNewContract(
   creator: User,
   question: string,
   outcomeType: outcomeType,
-  description: string,
+  description: JSONContent,
   initialProb: number,
   ante: number,
   closeTime: number,
@@ -29,18 +31,21 @@ export function getNewContract(
   bucketCount: number,
   min: number,
   max: number,
-  groupDetails?: GroupDetails
-) {
-  const tags = parseTags(
-    `${question} ${description} ${extraTags.map((tag) => `#${tag}`).join(' ')}`
-  )
-  const lowercaseTags = tags.map((tag) => tag.toLowerCase())
+  isLogScale: boolean,
 
+  // for multiple choice
+  answers: string[],
+  visibility: visibility
+) {
   const propsByOutcomeType =
     outcomeType === 'BINARY'
       ? getBinaryCpmmProps(initialProb, ante) // getBinaryDpmProps(initialProb, ante)
+      : outcomeType === 'PSEUDO_NUMERIC'
+      ? getPseudoNumericCpmmProps(initialProb, ante, min, max, isLogScale)
       : outcomeType === 'NUMERIC'
       ? getNumericProps(ante, bucketCount, min, max)
+      : outcomeType === 'MULTIPLE_CHOICE'
+      ? getMultipleChoiceProps(ante, answers)
       : getFreeAnswerProps(ante)
 
   const contract: Contract = removeUndefinedProps({
@@ -54,10 +59,11 @@ export function getNewContract(
     creatorAvatarUrl: creator.avatarUrl,
 
     question: question.trim(),
-    description: description.trim(),
-    tags,
-    lowercaseTags,
-    visibility: 'public',
+    description,
+    tags: [],
+    lowercaseTags: [],
+    visibility,
+    unlistedById: visibility === 'unlisted' ? creator.id : undefined,
     isResolved: false,
     createdTime: Date.now(),
     closeTime,
@@ -65,13 +71,13 @@ export function getNewContract(
     volume: 0,
     volume24Hours: 0,
     volume7Days: 0,
+    elasticity: propsByOutcomeType.mechanism === 'cpmm-1' ? 0.38 : 0.75,
 
     collectedFees: {
       creatorFee: 0,
       liquidityFee: 0,
       platformFee: 0,
     },
-    groupDetails: groupDetails ? [groupDetails] : undefined,
   })
 
   return contract as Contract
@@ -106,9 +112,30 @@ const getBinaryCpmmProps = (initialProb: number, ante: number) => {
     mechanism: 'cpmm-1',
     outcomeType: 'BINARY',
     totalLiquidity: ante,
+    subsidyPool: 0,
     initialProbability: p,
     p,
     pool: pool,
+    prob: initialProb,
+    probChanges: { day: 0, week: 0, month: 0 },
+  }
+
+  return system
+}
+
+const getPseudoNumericCpmmProps = (
+  initialProb: number,
+  ante: number,
+  min: number,
+  max: number,
+  isLogScale: boolean
+) => {
+  const system: CPMM & PseudoNumeric = {
+    ...getBinaryCpmmProps(initialProb, ante),
+    outcomeType: 'PSEUDO_NUMERIC',
+    min,
+    max,
+    isLogScale,
   }
 
   return system
@@ -127,6 +154,26 @@ const getFreeAnswerProps = (ante: number) => {
   return system
 }
 
+const getMultipleChoiceProps = (ante: number, answers: string[]) => {
+  const numAnswers = answers.length
+  const betAnte = ante / numAnswers
+  const betShares = Math.sqrt(ante ** 2 / numAnswers)
+
+  const defaultValues = (x: any) =>
+    Object.fromEntries(range(0, numAnswers).map((k) => [k, x]))
+
+  const system: DPM & MultipleChoice = {
+    mechanism: 'dpm-2',
+    outcomeType: 'MULTIPLE_CHOICE',
+    pool: defaultValues(betAnte),
+    totalShares: defaultValues(betShares),
+    totalBets: defaultValues(betAnte),
+    answers: [],
+  }
+
+  return system
+}
+
 const getNumericProps = (
   ante: number,
   bucketCount: number,

common/notification.ts

@@ -1,8 +1,10 @@
+import { notification_preference } from './user-notification-preferences'
+
 export type Notification = {
   id: string
   userId: string
   reasonText?: string
-  reason?: notification_reason_types
+  reason?: notification_reason_types | notification_preference
   createdTime: number
   viewTime?: number
   isSeen: boolean
@@ -15,6 +17,7 @@ export type Notification = {
   sourceUserUsername?: string
   sourceUserAvatarUrl?: string
   sourceText?: string
+  data?: { [key: string]: any }
 
   sourceContractTitle?: string
   sourceContractCreatorUsername?: string
@@ -22,7 +25,10 @@ export type Notification = {
 
   sourceSlug?: string
   sourceTitle?: string
+
+  isSeenOnHref?: string
 }
+
 export type notification_source_types =
   | 'contract'
   | 'comment'
@@ -33,6 +39,14 @@ export type notification_source_types =
   | 'tip'
   | 'admin_message'
   | 'group'
+  | 'user'
+  | 'bonus'
+  | 'challenge'
+  | 'betting_streak_bonus'
+  | 'loan'
+  | 'like'
+  | 'tip_and_like'
+  | 'badge'
 
 export type notification_source_update_types =
   | 'created'
@@ -41,15 +55,216 @@ export type notification_source_update_types =
   | 'deleted'
   | 'closed'
 
+/* Optional - if possible use a notification_preference */
 export type notification_reason_types =
   | 'tagged_user'
-  | 'on_users_contract'
-  | 'on_contract_with_users_shares_in'
-  | 'on_contract_with_users_shares_out'
-  | 'on_contract_with_users_answer'
-  | 'on_contract_with_users_comment'
+  | 'on_new_follow'
+  | 'contract_from_followed_user'
+  | 'you_referred_user'
+  | 'user_joined_to_bet_on_your_market'
+  | 'unique_bettors_on_your_contract'
+  | 'tip_received'
+  | 'bet_fill'
+  | 'user_joined_from_your_group_invite'
+  | 'challenge_accepted'
+  | 'betting_streak_incremented'
+  | 'loan_income'
+  | 'liked_and_tipped_your_contract'
+  | 'comment_on_your_contract'
+  | 'answer_on_your_contract'
+  | 'comment_on_contract_you_follow'
+  | 'answer_on_contract_you_follow'
+  | 'update_on_contract_you_follow'
+  | 'resolution_on_contract_you_follow'
+  | 'comment_on_contract_with_users_shares_in'
+  | 'answer_on_contract_with_users_shares_in'
+  | 'update_on_contract_with_users_shares_in'
+  | 'resolution_on_contract_with_users_shares_in'
+  | 'comment_on_contract_with_users_answer'
+  | 'update_on_contract_with_users_answer'
+  | 'resolution_on_contract_with_users_answer'
+  | 'answer_on_contract_with_users_answer'
+  | 'comment_on_contract_with_users_comment'
+  | 'answer_on_contract_with_users_comment'
+  | 'update_on_contract_with_users_comment'
+  | 'resolution_on_contract_with_users_comment'
   | 'reply_to_users_answer'
   | 'reply_to_users_comment'
-  | 'on_new_follow'
-  | 'you_follow_user'
-  | 'added_you_to_group'
+  | 'your_contract_closed'
+  | 'subsidized_your_market'
+
+type notification_descriptions = {
+  [key in notification_preference]: {
+    simple: string
+    detailed: string
+    necessary?: boolean
+  }
+}
+export const NOTIFICATION_DESCRIPTIONS: notification_descriptions = {
+  all_answers_on_my_markets: {
+    simple: 'Answers on your markets',
+    detailed: 'Answers on your own markets',
+  },
+  all_comments_on_my_markets: {
+    simple: 'Comments on your markets',
+    detailed: 'Comments on your own markets',
+  },
+  answers_by_followed_users_on_watched_markets: {
+    simple: 'Only answers by users you follow',
+    detailed: "Only answers by users you follow on markets you're watching",
+  },
+  answers_by_market_creator_on_watched_markets: {
+    simple: 'Only answers by market creator',
+    detailed: "Only answers by market creator on markets you're watching",
+  },
+  betting_streaks: {
+    simple: `For prediction streaks`,
+    detailed: `Bonuses for predictions made over consecutive days (Prediction streaks)})`,
+  },
+  comments_by_followed_users_on_watched_markets: {
+    simple: 'Only comments by users you follow',
+    detailed:
+      'Only comments by users that you follow on markets that you watch',
+  },
+  contract_from_followed_user: {
+    simple: 'New markets from users you follow',
+    detailed: 'New markets from users you follow',
+  },
+  limit_order_fills: {
+    simple: 'Limit order fills',
+    detailed: 'When your limit order is filled by another user',
+  },
+  loan_income: {
+    simple: 'Automatic loans from your predictions in unresolved markets',
+    detailed:
+      'Automatic loans from your predictions that are locked in unresolved markets',
+  },
+  market_updates_on_watched_markets: {
+    simple: 'All creator updates',
+    detailed: 'All market updates made by the creator',
+  },
+  market_updates_on_watched_markets_with_shares_in: {
+    simple: "Only creator updates on markets that you're invested in",
+    detailed:
+      "Only updates made by the creator on markets that you're invested in",
+  },
+  on_new_follow: {
+    simple: 'A user followed you',
+    detailed: 'A user followed you',
+  },
+  onboarding_flow: {
+    simple: 'Emails to help you get started using Manifold',
+    detailed: 'Emails to help you learn how to use Manifold',
+  },
+  probability_updates_on_watched_markets: {
+    simple: 'Large changes in probability on markets that you watch',
+    detailed: 'Large changes in probability on markets that you watch',
+  },
+  profit_loss_updates: {
+    simple: 'Weekly portfolio updates',
+    detailed: 'Weekly portfolio updates',
+  },
+  referral_bonuses: {
+    simple: 'For referring new users',
+    detailed: 'Bonuses you receive from referring a new user',
+  },
+  resolutions_on_watched_markets: {
+    simple: 'All market resolutions',
+    detailed: "All resolutions on markets that you're watching",
+  },
+  resolutions_on_watched_markets_with_shares_in: {
+    simple: "Only market resolutions that you're invested in",
+    detailed:
+      "Only resolutions of markets you're watching and that you're invested in",
+  },
+  subsidized_your_market: {
+    simple: 'Your market was subsidized',
+    detailed: 'When someone subsidizes your market',
+  },
+  tagged_user: {
+    simple: 'A user tagged you',
+    detailed: 'When another use tags you',
+  },
+  thank_you_for_purchases: {
+    simple: 'Thank you notes for your purchases',
+    detailed: 'Thank you notes for your purchases',
+  },
+  tipped_comments_on_watched_markets: {
+    simple: 'Only highly tipped comments on markets that you watch',
+    detailed: 'Only highly tipped comments on markets that you watch',
+  },
+  tips_on_your_comments: {
+    simple: 'Tips on your comments',
+    detailed: 'Tips on your comments',
+  },
+  tips_on_your_markets: {
+    simple: 'Tips/Likes on your markets',
+    detailed: 'Tips/Likes on your markets',
+  },
+  trending_markets: {
+    simple: 'Weekly interesting markets',
+    detailed: 'Weekly interesting markets',
+  },
+  unique_bettors_on_your_contract: {
+    simple: 'For unique predictors on your markets',
+    detailed: 'Bonuses for unique predictors on your markets',
+  },
+  your_contract_closed: {
+    simple: 'Your market has closed and you need to resolve it (necessary)',
+    detailed: 'Your market has closed and you need to resolve it (necessary)',
+    necessary: true,
+  },
+  all_comments_on_watched_markets: {
+    simple: 'All new comments',
+    detailed: 'All new comments on markets you follow',
+  },
+  all_comments_on_contracts_with_shares_in_on_watched_markets: {
+    simple: `Only on markets you're invested in`,
+    detailed: `Comments on markets that you're watching and you're invested in`,
+  },
+  all_replies_to_my_comments_on_watched_markets: {
+    simple: 'Only replies to your comments',
+    detailed: "Only replies to your comments on markets you're watching",
+  },
+  all_replies_to_my_answers_on_watched_markets: {
+    simple: 'Only replies to your answers',
+    detailed: "Only replies to your answers on markets you're watching",
+  },
+  all_answers_on_watched_markets: {
+    simple: 'All new answers',
+    detailed: "All new answers on markets you're watching",
+  },
+  all_answers_on_contracts_with_shares_in_on_watched_markets: {
+    simple: `Only on markets you're invested in`,
+    detailed: `Answers on markets that you're watching and that you're invested in`,
+  },
+  badges_awarded: {
+    simple: 'New badges awarded',
+    detailed: 'New badges you have earned',
+  },
+  opt_out_all: {
+    simple: 'Opt out of all notifications (excludes when your markets close)',
+    detailed:
+      'Opt out of all notifications excluding your own market closure notifications',
+  },
+}
+
+export type BettingStreakData = {
+  streak: number
+  bonusAmount: number
+}
+
+export type BetFillData = {
+  betOutcome: string
+  creatorOutcome: string
+  probability: number
+  fillAmount: number
+  limitOrderTotal?: number
+  limitOrderRemaining?: number
+}
+
+export type ContractResolutionData = {
+  outcome: string
+  userPayout: number
+  userInvestment: number
+}

common/package.json

@@ -3,10 +3,18 @@
   "version": "1.0.0",
   "private": true,
   "scripts": {
-    "verify": "(cd .. && yarn verify)"
+    "verify": "(cd .. && yarn verify)",
+    "verify:dir": "npx eslint . --max-warnings 0"
   },
   "sideEffects": false,
   "dependencies": {
+    "@tiptap/core": "2.0.0-beta.199",
+    "@tiptap/extension-image": "2.0.0-beta.199",
+    "@tiptap/extension-link": "2.0.0-beta.199",
+    "@tiptap/extension-mention": "2.0.0-beta.199",
+    "@tiptap/html": "2.0.0-beta.199",
+    "@tiptap/starter-kit": "2.0.0-beta.199",
+    "@tiptap/suggestion": "2.0.0-beta.199",
     "lodash": "4.17.21"
   },
   "devDependencies": {

common/payouts-dpm.ts

@@ -2,14 +2,17 @@ import { sum, groupBy, sumBy, mapValues } from 'lodash'
 
 import { Bet, NumericBet } from './bet'
 import { deductDpmFees, getDpmProbability } from './calculate-dpm'
-import { DPMContract, FreeResponseContract } from './contract'
+import {
+  DPMContract,
+  FreeResponseContract,
+  MultipleChoiceContract,
+} from './contract'
 import { DPM_CREATOR_FEE, DPM_FEES, DPM_PLATFORM_FEE } from './fees'
 import { addObjects } from './util/object'
 
 export const getDpmCancelPayouts = (contract: DPMContract, bets: Bet[]) => {
   const { pool } = contract
   const poolTotal = sum(Object.values(pool))
-  console.log('resolved N/A, pool M$', poolTotal)
 
   const betSum = sumBy(bets, (b) => b.amount)
 
@@ -54,17 +57,6 @@ export const getDpmStandardPayouts = (
     liquidityFee: 0,
   })
 
-  console.log(
-    'resolved',
-    outcome,
-    'pool',
-    poolTotal,
-    'profits',
-    profits,
-    'creator fee',
-    creatorFee
-  )
-
   return {
     payouts: payouts.map(({ userId, payout }) => ({ userId, payout })),
     creatorPayout: creatorFee,
@@ -106,17 +98,6 @@ export const getNumericDpmPayouts = (
     liquidityFee: 0,
   })
 
-  console.log(
-    'resolved numeric bucket: ',
-    outcome,
-    'pool',
-    poolTotal,
-    'profits',
-    profits,
-    'creator fee',
-    creatorFee
-  )
-
   return {
     payouts: payouts.map(({ userId, payout }) => ({ userId, payout })),
     creatorPayout: creatorFee,
@@ -159,17 +140,6 @@ export const getDpmMktPayouts = (
     liquidityFee: 0,
   })
 
-  console.log(
-    'resolved MKT',
-    p,
-    'pool',
-    pool,
-    'profits',
-    profits,
-    'creator fee',
-    creatorFee
-  )
-
   return {
     payouts: payouts.map(({ userId, payout }) => ({ userId, payout })),
     creatorPayout: creatorFee,
@@ -180,7 +150,7 @@ export const getDpmMktPayouts = (
 
 export const getPayoutsMultiOutcome = (
   resolutions: { [outcome: string]: number },
-  contract: FreeResponseContract,
+  contract: FreeResponseContract | MultipleChoiceContract,
   bets: Bet[]
 ) => {
   const poolTotal = sum(Object.values(contract.pool))
@@ -198,7 +168,7 @@ export const getPayoutsMultiOutcome = (
     const winnings = (shares / sharesByOutcome[outcome]) * prob * poolTotal
     const profit = winnings - amount
 
-    const payout = amount + (1 - DPM_FEES) * Math.max(0, profit)
+    const payout = amount + (1 - DPM_FEES) * profit
     return { userId, profit, payout }
   })
 
@@ -212,16 +182,6 @@ export const getPayoutsMultiOutcome = (
     liquidityFee: 0,
   })
 
-  console.log(
-    'resolved',
-    resolutions,
-    'pool',
-    poolTotal,
-    'profits',
-    profits,
-    'creator fee',
-    creatorFee
-  )
   return {
     payouts: payouts.map(({ userId, payout }) => ({ userId, payout })),
     creatorPayout: creatorFee,

common/payouts-fixed.ts

@@ -1,5 +1,3 @@
-import { sum } from 'lodash'
-
 import { Bet } from './bet'
 import { getProbability } from './calculate'
 import { getCpmmLiquidityPoolWeights } from './calculate-cpmm'
@@ -43,18 +41,6 @@ export const getStandardFixedPayouts = (
 
   const { collectedFees } = contract
   const creatorPayout = collectedFees.creatorFee
-
-  console.log(
-    'resolved',
-    outcome,
-    'pool',
-    contract.pool[outcome],
-    'payouts',
-    sum(payouts),
-    'creator fee',
-    creatorPayout
-  )
-
   const liquidityPayouts = getLiquidityPoolPayouts(
     contract,
     outcome,
@@ -69,10 +55,11 @@ export const getLiquidityPoolPayouts = (
   outcome: string,
   liquidities: LiquidityProvision[]
 ) => {
-  const { pool } = contract
-  const finalPool = pool[outcome]
+  const { pool, subsidyPool } = contract
+  const finalPool = pool[outcome] + (subsidyPool ?? 0)
+  if (finalPool < 1e-3) return []
 
-  const weights = getCpmmLiquidityPoolWeights(contract, liquidities)
+  const weights = getCpmmLiquidityPoolWeights(liquidities)
 
   return Object.entries(weights).map(([providerId, weight]) => ({
     userId: providerId,
@@ -98,18 +85,6 @@ export const getMktFixedPayouts = (
 
   const { collectedFees } = contract
   const creatorPayout = collectedFees.creatorFee
-
-  console.log(
-    'resolved PROB',
-    p,
-    'pool',
-    p * contract.pool.YES + (1 - p) * contract.pool.NO,
-    'payouts',
-    sum(payouts),
-    'creator fee',
-    creatorPayout
-  )
-
   const liquidityPayouts = getLiquidityPoolProbPayouts(contract, p, liquidities)
 
   return { payouts, creatorPayout, liquidityPayouts, collectedFees }
@@ -120,10 +95,11 @@ export const getLiquidityPoolProbPayouts = (
   p: number,
   liquidities: LiquidityProvision[]
 ) => {
-  const { pool } = contract
-  const finalPool = p * pool.YES + (1 - p) * pool.NO
+  const { pool, subsidyPool } = contract
+  const finalPool = p * pool.YES + (1 - p) * pool.NO + (subsidyPool ?? 0)
+  if (finalPool < 1e-3) return []
 
-  const weights = getCpmmLiquidityPoolWeights(contract, liquidities)
+  const weights = getCpmmLiquidityPoolWeights(liquidities)
 
   return Object.entries(weights).map(([providerId, weight]) => ({
     userId: providerId,

common/payouts.ts

@@ -1,7 +1,12 @@
 import { sumBy, groupBy, mapValues } from 'lodash'
 
 import { Bet, NumericBet } from './bet'
-import { Contract, CPMMBinaryContract, DPMContract } from './contract'
+import {
+  Contract,
+  CPMMBinaryContract,
+  DPMContract,
+  PseudoNumericContract,
+} from './contract'
 import { Fees } from './fees'
 import { LiquidityProvision } from './liquidity-provision'
 import {
@@ -48,15 +53,19 @@ export type PayoutInfo = {
 
 export const getPayouts = (
   outcome: string | undefined,
-  resolutions: {
-    [outcome: string]: number
-  },
   contract: Contract,
   bets: Bet[],
   liquidities: LiquidityProvision[],
+  resolutions?: {
+    [outcome: string]: number
+  },
   resolutionProbability?: number
 ): PayoutInfo => {
-  if (contract.mechanism === 'cpmm-1' && contract.outcomeType === 'BINARY') {
+  if (
+    contract.mechanism === 'cpmm-1' &&
+    (contract.outcomeType === 'BINARY' ||
+      contract.outcomeType === 'PSEUDO_NUMERIC')
+  ) {
     return getFixedPayouts(
       outcome,
       contract,
@@ -67,16 +76,16 @@ export const getPayouts = (
   }
   return getDpmPayouts(
     outcome,
-    resolutions,
     contract,
     bets,
+    resolutions,
     resolutionProbability
   )
 }
 
 export const getFixedPayouts = (
   outcome: string | undefined,
-  contract: CPMMBinaryContract,
+  contract: CPMMBinaryContract | PseudoNumericContract,
   bets: Bet[],
   liquidities: LiquidityProvision[],
   resolutionProbability?: number
@@ -100,14 +109,15 @@ export const getFixedPayouts = (
 
 export const getDpmPayouts = (
   outcome: string | undefined,
-  resolutions: {
-    [outcome: string]: number
-  },
   contract: DPMContract,
   bets: Bet[],
+  resolutions?: {
+    [outcome: string]: number
+  },
   resolutionProbability?: number
 ): PayoutInfo => {
   const openBets = bets.filter((b) => !b.isSold && !b.sale)
+  const { outcomeType } = contract
 
   switch (outcome) {
     case 'YES':
@@ -115,15 +125,16 @@ export const getDpmPayouts = (
       return getDpmStandardPayouts(outcome, contract, openBets)
 
     case 'MKT':
-      return contract.outcomeType === 'FREE_RESPONSE'
-        ? getPayoutsMultiOutcome(resolutions, contract, openBets)
+      return outcomeType === 'FREE_RESPONSE' ||
+        outcomeType === 'MULTIPLE_CHOICE' // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        ? getPayoutsMultiOutcome(resolutions!, contract, openBets)
         : getDpmMktPayouts(contract, openBets, resolutionProbability)
     case 'CANCEL':
     case undefined:
       return getDpmCancelPayouts(contract, openBets)
 
     default:
-      if (contract.outcomeType === 'NUMERIC')
+      if (outcomeType === 'NUMERIC')
         return getNumericDpmPayouts(outcome, contract, openBets as NumericBet[])
 
       // Outcome is a free response answer id.

common/post.ts

@@ -0,0 +1,29 @@
+import { JSONContent } from '@tiptap/core'
+
+export type Post = {
+  id: string
+  title: string
+  subtitle: string
+  content: JSONContent
+  creatorId: string // User id
+  createdTime: number
+  slug: string
+
+  // denormalized user fields
+  creatorName: string
+  creatorUsername: string
+  creatorAvatarUrl?: string
+
+  likedByUserIds?: string[]
+  likedByUserCount?: number
+}
+
+export type DateDoc = Post & {
+  bounty: number
+  birthday: number
+  type: 'date-doc'
+  contractSlug: string
+}
+
+export const MAX_POST_TITLE_LENGTH = 480
+export const MAX_POST_SUBTITLE_LENGTH = 480

common/pseudo-numeric.ts

@@ -0,0 +1,48 @@
+import { BinaryContract, PseudoNumericContract } from './contract'
+import { formatLargeNumber, formatPercent } from './util/format'
+
+export function formatNumericProbability(
+  p: number,
+  contract: PseudoNumericContract
+) {
+  const value = getMappedValue(contract)(p)
+  return formatLargeNumber(value)
+}
+
+export const getMappedValue =
+  (contract: PseudoNumericContract | BinaryContract) => (p: number) => {
+    if (contract.outcomeType === 'BINARY') return p
+
+    const { min, max, isLogScale } = contract
+
+    if (isLogScale) {
+      const logValue = p * Math.log10(max - min + 1)
+      return 10 ** logValue + min - 1
+    }
+
+    return p * (max - min) + min
+  }
+
+export const getFormattedMappedValue =
+  (contract: PseudoNumericContract | BinaryContract) => (p: number) => {
+    if (contract.outcomeType === 'BINARY') return formatPercent(p)
+
+    const value = getMappedValue(contract)(p)
+    return formatLargeNumber(value)
+  }
+
+export const getPseudoProbability = (
+  value: number,
+  min: number,
+  max: number,
+  isLogScale = false
+) => {
+  if (value < min) return 0
+  if (value > max) return 1
+
+  if (isLogScale) {
+    return Math.log10(value - min + 1) / Math.log10(max - min + 1)
+  }
+
+  return (value - min) / (max - min)
+}

common/recommended-contracts.ts

@@ -1,187 +0,0 @@
-import { union, sum, sumBy, sortBy, groupBy, mapValues } from 'lodash'
-import { Bet } from './bet'
-import { Contract } from './contract'
-import { ClickEvent } from './tracking'
-import { filterDefined } from './util/array'
-import { addObjects } from './util/object'
-
-export const MAX_FEED_CONTRACTS = 75
-
-export const getRecommendedContracts = (
-  contractsById: { [contractId: string]: Contract },
-  yourBetOnContractIds: string[]
-) => {
-  const contracts = Object.values(contractsById)
-  const yourContracts = filterDefined(
-    yourBetOnContractIds.map((contractId) => contractsById[contractId])
-  )
-
-  const yourContractIds = new Set(yourContracts.map((c) => c.id))
-  const notYourContracts = contracts.filter((c) => !yourContractIds.has(c.id))
-
-  const yourWordFrequency = contractsToWordFrequency(yourContracts)
-  const otherWordFrequency = contractsToWordFrequency(notYourContracts)
-  const words = union(
-    Object.keys(yourWordFrequency),
-    Object.keys(otherWordFrequency)
-  )
-
-  const yourWeightedFrequency = Object.fromEntries(
-    words.map((word) => {
-      const [yourFreq, otherFreq] = [
-        yourWordFrequency[word] ?? 0,
-        otherWordFrequency[word] ?? 0,
-      ]
-
-      const score = yourFreq / (yourFreq + otherFreq + 0.0001)
-
-      return [word, score]
-    })
-  )
-
-  // console.log(
-  //   'your weighted frequency',
-  //   _.sortBy(_.toPairs(yourWeightedFrequency), ([, freq]) => -freq)
-  // )
-
-  const scoredContracts = contracts.map((contract) => {
-    const wordFrequency = contractToWordFrequency(contract)
-
-    const score = sumBy(Object.keys(wordFrequency), (word) => {
-      const wordFreq = wordFrequency[word] ?? 0
-      const weight = yourWeightedFrequency[word] ?? 0
-      return wordFreq * weight
-    })
-
-    return {
-      contract,
-      score,
-    }
-  })
-
-  return sortBy(scoredContracts, (scored) => -scored.score).map(
-    (scored) => scored.contract
-  )
-}
-
-const contractToText = (contract: Contract) => {
-  const { description, question, tags, creatorUsername } = contract
-  return `${creatorUsername} ${question} ${tags.join(' ')} ${description}`
-}
-
-const MAX_CHARS_IN_WORD = 100
-
-const getWordsCount = (text: string) => {
-  const normalizedText = text.replace(/[^a-zA-Z]/g, ' ').toLowerCase()
-  const words = normalizedText
-    .split(' ')
-    .filter((word) => word)
-    .filter((word) => word.length <= MAX_CHARS_IN_WORD)
-
-  const counts: { [word: string]: number } = {}
-  for (const word of words) {
-    if (counts[word]) counts[word]++
-    else counts[word] = 1
-  }
-  return counts
-}
-
-const toFrequency = (counts: { [word: string]: number }) => {
-  const total = sum(Object.values(counts))
-  return mapValues(counts, (count) => count / total)
-}
-
-const contractToWordFrequency = (contract: Contract) =>
-  toFrequency(getWordsCount(contractToText(contract)))
-
-const contractsToWordFrequency = (contracts: Contract[]) => {
-  const frequencySum = contracts
-    .map(contractToWordFrequency)
-    .reduce(addObjects, {})
-
-  return toFrequency(frequencySum)
-}
-
-export const getWordScores = (
-  contracts: Contract[],
-  contractViewCounts: { [contractId: string]: number },
-  clicks: ClickEvent[],
-  bets: Bet[]
-) => {
-  const contractClicks = groupBy(clicks, (click) => click.contractId)
-  const contractBets = groupBy(bets, (bet) => bet.contractId)
-
-  const yourContracts = contracts.filter(
-    (c) =>
-      contractViewCounts[c.id] || contractClicks[c.id] || contractBets[c.id]
-  )
-  const yourTfIdf = calculateContractTfIdf(yourContracts)
-
-  const contractWordScores = mapValues(yourTfIdf, (wordsTfIdf, contractId) => {
-    const viewCount = contractViewCounts[contractId] ?? 0
-    const clickCount = contractClicks[contractId]?.length ?? 0
-    const betCount = contractBets[contractId]?.length ?? 0
-
-    const factor =
-      -1 * Math.log(viewCount + 1) +
-      10 * Math.log(betCount + clickCount / 4 + 1)
-
-    return mapValues(wordsTfIdf, (tfIdf) => tfIdf * factor)
-  })
-
-  const wordScores = Object.values(contractWordScores).reduce(addObjects, {})
-  const minScore = Math.min(...Object.values(wordScores))
-  const maxScore = Math.max(...Object.values(wordScores))
-  const normalizedWordScores = mapValues(
-    wordScores,
-    (score) => (score - minScore) / (maxScore - minScore)
-  )
-
-  // console.log(
-  //   'your word scores',
-  //   _.sortBy(_.toPairs(normalizedWordScores), ([, score]) => -score).slice(0, 100),
-  //   _.sortBy(_.toPairs(normalizedWordScores), ([, score]) => -score).slice(-100)
-  // )
-
-  return normalizedWordScores
-}
-
-export function getContractScore(
-  contract: Contract,
-  wordScores: { [word: string]: number }
-) {
-  if (Object.keys(wordScores).length === 0) return 1
-
-  const wordFrequency = contractToWordFrequency(contract)
-  const score = sumBy(Object.keys(wordFrequency), (word) => {
-    const wordFreq = wordFrequency[word] ?? 0
-    const weight = wordScores[word] ?? 0
-    return wordFreq * weight
-  })
-
-  return score
-}
-
-// Caluculate Term Frequency-Inverse Document Frequency (TF-IDF):
-// https://medium.datadriveninvestor.com/tf-idf-in-natural-language-processing-8db8ef4a7736
-function calculateContractTfIdf(contracts: Contract[]) {
-  const contractFreq = contracts.map((c) => contractToWordFrequency(c))
-  const contractWords = contractFreq.map((freq) => Object.keys(freq))
-
-  const wordsCount: { [word: string]: number } = {}
-  for (const words of contractWords) {
-    for (const word of words) {
-      wordsCount[word] = (wordsCount[word] ?? 0) + 1
-    }
-  }
-
-  const wordIdf = mapValues(wordsCount, (count) =>
-    Math.log(contracts.length / count)
-  )
-  const contractWordsTfIdf = contractFreq.map((wordFreq) =>
-    mapValues(wordFreq, (freq, word) => freq * wordIdf[word])
-  )
-  return Object.fromEntries(
-    contracts.map((c, i) => [c.id, contractWordsTfIdf[i]])
-  )
-}

common/redeem.ts

@@ -0,0 +1,58 @@
+import { partition, sumBy } from 'lodash'
+
+import { Bet } from './bet'
+import { getProbability } from './calculate'
+import { CPMMContract } from './contract'
+import { noFees } from './fees'
+import { CandidateBet } from './new-bet'
+
+type RedeemableBet = Pick<Bet, 'outcome' | 'shares' | 'loanAmount'>
+
+export const getRedeemableAmount = (bets: RedeemableBet[]) => {
+  const [yesBets, noBets] = partition(bets, (b) => b.outcome === 'YES')
+  const yesShares = sumBy(yesBets, (b) => b.shares)
+  const noShares = sumBy(noBets, (b) => b.shares)
+  const shares = Math.max(Math.min(yesShares, noShares), 0)
+  const soldFrac =
+    shares > 0
+      ? Math.min(yesShares, noShares) / Math.max(yesShares, noShares)
+      : 0
+  const loanAmount = sumBy(bets, (bet) => bet.loanAmount ?? 0)
+  const loanPayment = loanAmount * soldFrac
+  const netAmount = shares - loanPayment
+  return { shares, loanPayment, netAmount }
+}
+
+export const getRedemptionBets = (
+  shares: number,
+  loanPayment: number,
+  contract: CPMMContract
+) => {
+  const p = getProbability(contract)
+  const createdTime = Date.now()
+  const yesBet: CandidateBet = {
+    contractId: contract.id,
+    amount: p * -shares,
+    shares: -shares,
+    loanAmount: loanPayment ? -loanPayment / 2 : 0,
+    outcome: 'YES',
+    probBefore: p,
+    probAfter: p,
+    createdTime,
+    isRedemption: true,
+    fees: noFees,
+  }
+  const noBet: CandidateBet = {
+    contractId: contract.id,
+    amount: (1 - p) * -shares,
+    shares: -shares,
+    loanAmount: loanPayment ? -loanPayment / 2 : 0,
+    outcome: 'NO',
+    probBefore: p,
+    probAfter: p,
+    createdTime,
+    isRedemption: true,
+    fees: noFees,
+  }
+  return [yesBet, noBet]
+}

common/scoring.ts

@@ -1,8 +1,9 @@
-import { groupBy, sumBy, mapValues, partition } from 'lodash'
+import { groupBy, sumBy, mapValues, keyBy, sortBy } from 'lodash'
 
 import { Bet } from './bet'
+import { getContractBetMetrics, resolvedPayout } from './calculate'
 import { Contract } from './contract'
-import { getPayouts } from './payouts'
+import { ContractComment } from './comment'
 
 export function scoreCreators(contracts: Contract[]) {
   const creatorScore = mapValues(
@@ -30,46 +31,11 @@ export function scoreTraders(contracts: Contract[], bets: Bet[][]) {
 }
 
 export function scoreUsersByContract(contract: Contract, bets: Bet[]) {
-  const { resolution } = contract
-  const resolutionProb =
-    contract.outcomeType == 'BINARY'
-      ? contract.resolutionProbability
-      : undefined
-
-  const [closedBets, openBets] = partition(
-    bets,
-    (bet) => bet.isSold || bet.sale
+  const betsByUser = groupBy(bets, (bet) => bet.userId)
+  return mapValues(
+    betsByUser,
+    (bets) => getContractBetMetrics(contract, bets).profit
   )
-  const { payouts: resolvePayouts } = getPayouts(
-    resolution as string,
-    {},
-    contract,
-    openBets,
-    [],
-    resolutionProb
-  )
-
-  const salePayouts = closedBets.map((bet) => {
-    const { userId, sale } = bet
-    return { userId, payout: sale ? sale.amount : 0 }
-  })
-
-  const investments = bets
-    .filter((bet) => !bet.sale)
-    .map((bet) => {
-      const { userId, amount, loanAmount } = bet
-      const payout = -amount - (loanAmount ?? 0)
-      return { userId, payout }
-    })
-
-  const netPayouts = [...resolvePayouts, ...salePayouts, ...investments]
-
-  const userScore = mapValues(
-    groupBy(netPayouts, (payout) => payout.userId),
-    (payouts) => sumBy(payouts, ({ payout }) => payout)
-  )
-
-  return userScore
 }
 
 export function addUserScores(
@@ -81,3 +47,47 @@ export function addUserScores(
     dest[userId] += score
   }
 }
+
+export function scoreCommentorsAndBettors(
+  contract: Contract,
+  bets: Bet[],
+  comments: ContractComment[]
+) {
+  const commentsById = keyBy(comments, 'id')
+  const betsById = keyBy(bets, 'id')
+
+  // If 'id2' is the sale of 'id1', both are logged with (id2 - id1) of profit
+  // Otherwise, we record the profit at resolution time
+  const profitById: Record<string, number> = {}
+  for (const bet of bets) {
+    if (bet.sale) {
+      const originalBet = betsById[bet.sale.betId]
+      const profit = bet.sale.amount - originalBet.amount
+      profitById[bet.id] = profit
+      profitById[originalBet.id] = profit
+    } else {
+      profitById[bet.id] = resolvedPayout(contract, bet) - bet.amount
+    }
+  }
+
+  // Now find the betId with the highest profit
+  const topBetId = sortBy(bets, (b) => -profitById[b.id])[0]?.id
+  const topBettor = betsById[topBetId]?.userName
+
+  // And also the commentId of the comment with the highest profit
+  const topCommentId = sortBy(
+    comments,
+    (c) => c.betId && -profitById[c.betId]
+  )[0]?.id
+  const topCommentBetId = commentsById[topCommentId]?.betId
+
+  return {
+    topCommentId,
+    topBetId,
+    topBettor,
+    profitById,
+    commentsById,
+    betsById,
+    topCommentBetId,
+  }
+}

common/sell-bet.ts

@@ -1,4 +1,4 @@
-import { Bet } from './bet'
+import { Bet, LimitBet } from './bet'
 import {
   calculateDpmShareValue,
   deductDpmFees,
@@ -7,12 +7,16 @@ import {
 import { calculateCpmmSale, getCpmmProbability } from './calculate-cpmm'
 import { CPMMContract, DPMContract } from './contract'
 import { DPM_CREATOR_FEE, DPM_PLATFORM_FEE, Fees } from './fees'
+import { sumBy } from 'lodash'
 
-export type CandidateBet<T extends Bet> = Omit<T, 'id' | 'userId'>
+export type CandidateBet<T extends Bet> = Omit<
+  T,
+  'id' | 'userId' | 'userAvatarUrl' | 'userName' | 'userUsername'
+>
 
 export const getSellBetInfo = (bet: Bet, contract: DPMContract) => {
   const { pool, totalShares, totalBets } = contract
-  const { id: betId, amount, shares, outcome } = bet
+  const { id: betId, amount, shares, outcome, loanAmount } = bet
 
   const adjShareValue = calculateDpmShareValue(contract, bet)
 
@@ -63,6 +67,7 @@ export const getSellBetInfo = (bet: Bet, contract: DPMContract) => {
       betId,
     },
     fees,
+    loanAmount: -(loanAmount ?? 0),
   }
 
   return {
@@ -78,19 +83,25 @@ export const getCpmmSellBetInfo = (
   shares: number,
   outcome: 'YES' | 'NO',
   contract: CPMMContract,
-  prevLoanAmount: number
+  unfilledBets: LimitBet[],
+  balanceByUserId: { [userId: string]: number },
+  loanPaid: number
 ) => {
   const { pool, p } = contract
 
-  const { saleValue, newPool, newP, fees } = calculateCpmmSale(
+  const { saleValue, cpmmState, fees, makers, takers, ordersToCancel } = calculateCpmmSale(
     contract,
     shares,
-    outcome
+    outcome,
+    unfilledBets,
+    balanceByUserId,
   )
 
-  const loanPaid = Math.min(prevLoanAmount, saleValue)
   const probBefore = getCpmmProbability(pool, p)
-  const probAfter = getCpmmProbability(newPool, p)
+  const probAfter = getCpmmProbability(cpmmState.pool, cpmmState.p)
+
+  const takerAmount = sumBy(takers, 'amount')
+  const takerShares = sumBy(takers, 'shares')
 
   console.log(
     'SELL M$',
@@ -104,20 +115,27 @@ export const getCpmmSellBetInfo = (
 
   const newBet: CandidateBet<Bet> = {
     contractId: contract.id,
-    amount: -saleValue,
-    shares: -shares,
+    amount: takerAmount,
+    shares: takerShares,
     outcome,
     probBefore,
     probAfter,
     createdTime: Date.now(),
     loanAmount: -loanPaid,
     fees,
+    fills: takers,
+    isFilled: true,
+    isCancelled: false,
+    orderAmount: takerAmount,
   }
 
   return {
     newBet,
-    newPool,
-    newP,
+    newPool: cpmmState.pool,
+    newP: cpmmState.p,
     fees,
+    makers,
+    takers,
+    ordersToCancel
   }
 }

common/stats.ts

@@ -0,0 +1,25 @@
+export type Stats = {
+  startDate: number
+  dailyActiveUsers: number[]
+  dailyActiveUsersWeeklyAvg: number[]
+  weeklyActiveUsers: number[]
+  monthlyActiveUsers: number[]
+  d1: number[]
+  d1WeeklyAvg: number[]
+  nd1: number[]
+  nd1WeeklyAvg: number[]
+  nw1: number[]
+  dailyBetCounts: number[]
+  dailyContractCounts: number[]
+  dailyCommentCounts: number[]
+  dailySignups: number[]
+  weekOnWeekRetention: number[]
+  monthlyRetention: number[]
+  dailyActivationRate: number[]
+  dailyActivationRateWeeklyAvg: number[]
+  manaBet: {
+    daily: number[]
+    weekly: number[]
+    monthly: number[]
+  }
+}

common/tsconfig.json

@@ -1,6 +1,8 @@
 {
   "compilerOptions": {
     "baseUrl": "../",
+    "composite": true,
+    "module": "commonjs",
     "moduleResolution": "node",
     "noImplicitReturns": true,
     "outDir": "lib",

common/txn.ts

@@ -1,6 +1,14 @@
 // A txn (pronounced "texan") respresents a payment between two ids on Manifold
 // Shortened from "transaction" to distinguish from Firebase transactions (and save chars)
-type AnyTxnType = Donation | Tip
+type AnyTxnType =
+  | Donation
+  | Tip
+  | Manalink
+  | Referral
+  | UniqueBettorBonus
+  | BettingStreakBonus
+  | CancelUniqueBettorBonus
+  | CommentBountyRefund
 type SourceType = 'USER' | 'CONTRACT' | 'CHARITY' | 'BANK'
 
 export type Txn<T extends AnyTxnType = AnyTxnType> = {
@@ -16,6 +24,17 @@ export type Txn<T extends AnyTxnType = AnyTxnType> = {
   amount: number
   token: 'M$' // | 'USD' | MarketOutcome
 
+  category:
+    | 'CHARITY'
+    | 'MANALINK'
+    | 'TIP'
+    | 'REFERRAL'
+    | 'UNIQUE_BETTOR_BONUS'
+    | 'BETTING_STREAK_BONUS'
+    | 'CANCEL_UNIQUE_BETTOR_BONUS'
+    | 'COMMENT_BOUNTY'
+    | 'REFUND_COMMENT_BOUNTY'
+
   // Any extra data
   data?: { [key: string]: any }
 
@@ -33,11 +52,89 @@ type Tip = {
   fromType: 'USER'
   toType: 'USER'
   category: 'TIP'
+  data: {
+    commentId: string
+    contractId?: string
+    groupId?: string
+  }
+}
+
+type Manalink = {
+  fromType: 'USER'
+  toType: 'USER'
+  category: 'MANALINK'
+}
+
+type Referral = {
+  fromType: 'BANK'
+  toType: 'USER'
+  category: 'REFERRAL'
+}
+
+type UniqueBettorBonus = {
+  fromType: 'BANK'
+  toType: 'USER'
+  category: 'UNIQUE_BETTOR_BONUS'
+  data: {
+    contractId: string
+    uniqueNewBettorId?: string
+    // Old unique bettor bonus txns stored all unique bettor ids
+    uniqueBettorIds?: string[]
+  }
+}
+
+type BettingStreakBonus = {
+  fromType: 'BANK'
+  toType: 'USER'
+  category: 'BETTING_STREAK_BONUS'
+  data: {
+    currentBettingStreak?: number
+  }
+}
+
+type CancelUniqueBettorBonus = {
+  fromType: 'USER'
+  toType: 'BANK'
+  category: 'CANCEL_UNIQUE_BETTOR_BONUS'
+  data: {
+    contractId: string
+  }
+}
+
+type CommentBountyDeposit = {
+  fromType: 'USER'
+  toType: 'BANK'
+  category: 'COMMENT_BOUNTY'
+  data: {
+    contractId: string
+  }
+}
+
+type CommentBountyWithdrawal = {
+  fromType: 'BANK'
+  toType: 'USER'
+  category: 'COMMENT_BOUNTY'
   data: {
     contractId: string
     commentId: string
   }
 }
 
+type CommentBountyRefund = {
+  fromType: 'BANK'
+  toType: 'USER'
+  category: 'REFUND_COMMENT_BOUNTY'
+  data: {
+    contractId: string
+  }
+}
+
 export type DonationTxn = Txn & Donation
 export type TipTxn = Txn & Tip
+export type ManalinkTxn = Txn & Manalink
+export type ReferralTxn = Txn & Referral
+export type BettingStreakBonusTxn = Txn & BettingStreakBonus
+export type UniqueBettorBonusTxn = Txn & UniqueBettorBonus
+export type CancelUniqueBettorBonusTxn = Txn & CancelUniqueBettorBonus
+export type CommentBountyDepositTxn = Txn & CommentBountyDeposit
+export type CommentBountyWithdrawalTxn = Txn & CommentBountyWithdrawal

common/user-notification-preferences.ts

@@ -0,0 +1,222 @@
+import { filterDefined } from './util/array'
+import { notification_reason_types } from './notification'
+import { getFunctionUrl } from './api'
+import { DOMAIN } from './envs/constants'
+import { PrivateUser } from './user'
+
+export type notification_destination_types = 'email' | 'browser'
+export type notification_preference = keyof notification_preferences
+export type notification_preferences = {
+  // Watched Markets
+  all_comments_on_watched_markets: notification_destination_types[]
+  all_answers_on_watched_markets: notification_destination_types[]
+
+  // Comments
+  tipped_comments_on_watched_markets: notification_destination_types[]
+  comments_by_followed_users_on_watched_markets: notification_destination_types[]
+  all_replies_to_my_comments_on_watched_markets: notification_destination_types[]
+  all_replies_to_my_answers_on_watched_markets: notification_destination_types[]
+  all_comments_on_contracts_with_shares_in_on_watched_markets: notification_destination_types[]
+
+  // Answers
+  answers_by_followed_users_on_watched_markets: notification_destination_types[]
+  answers_by_market_creator_on_watched_markets: notification_destination_types[]
+  all_answers_on_contracts_with_shares_in_on_watched_markets: notification_destination_types[]
+
+  // On users' markets
+  your_contract_closed: notification_destination_types[]
+  all_comments_on_my_markets: notification_destination_types[]
+  all_answers_on_my_markets: notification_destination_types[]
+  subsidized_your_market: notification_destination_types[]
+
+  // Market updates
+  resolutions_on_watched_markets: notification_destination_types[]
+  resolutions_on_watched_markets_with_shares_in: notification_destination_types[]
+  market_updates_on_watched_markets: notification_destination_types[]
+  market_updates_on_watched_markets_with_shares_in: notification_destination_types[]
+  probability_updates_on_watched_markets: notification_destination_types[]
+
+  // Balance Changes
+  loan_income: notification_destination_types[]
+  betting_streaks: notification_destination_types[]
+  referral_bonuses: notification_destination_types[]
+  unique_bettors_on_your_contract: notification_destination_types[]
+  tips_on_your_comments: notification_destination_types[]
+  tips_on_your_markets: notification_destination_types[]
+  limit_order_fills: notification_destination_types[]
+
+  // General
+  tagged_user: notification_destination_types[]
+  on_new_follow: notification_destination_types[]
+  contract_from_followed_user: notification_destination_types[]
+  trending_markets: notification_destination_types[]
+  profit_loss_updates: notification_destination_types[]
+  onboarding_flow: notification_destination_types[]
+  thank_you_for_purchases: notification_destination_types[]
+  badges_awarded: notification_destination_types[]
+  opt_out_all: notification_destination_types[]
+  // When adding a new notification preference, use add-new-notification-preference.ts to existing users
+}
+
+export const getDefaultNotificationPreferences = (
+  userId: string,
+  privateUser?: PrivateUser,
+  noEmails?: boolean
+) => {
+  const constructPref = (browserIf: boolean, emailIf: boolean) => {
+    const browser = browserIf ? 'browser' : undefined
+    const email = noEmails ? undefined : emailIf ? 'email' : undefined
+    return filterDefined([browser, email]) as notification_destination_types[]
+  }
+  const defaults: notification_preferences = {
+    // Watched Markets
+    all_comments_on_watched_markets: constructPref(true, false),
+    all_answers_on_watched_markets: constructPref(true, false),
+
+    // Comments
+    tips_on_your_comments: constructPref(true, true),
+    comments_by_followed_users_on_watched_markets: constructPref(true, true),
+    all_replies_to_my_comments_on_watched_markets: constructPref(true, true),
+    all_replies_to_my_answers_on_watched_markets: constructPref(true, true),
+    all_comments_on_contracts_with_shares_in_on_watched_markets: constructPref(
+      true,
+      false
+    ),
+
+    // Answers
+    answers_by_followed_users_on_watched_markets: constructPref(true, true),
+    answers_by_market_creator_on_watched_markets: constructPref(true, true),
+    all_answers_on_contracts_with_shares_in_on_watched_markets: constructPref(
+      true,
+      true
+    ),
+
+    // On users' markets
+    your_contract_closed: constructPref(true, true), // High priority
+    all_comments_on_my_markets: constructPref(true, true),
+    all_answers_on_my_markets: constructPref(true, true),
+    subsidized_your_market: constructPref(true, true),
+
+    // Market updates
+    resolutions_on_watched_markets: constructPref(true, false),
+    market_updates_on_watched_markets: constructPref(true, false),
+    market_updates_on_watched_markets_with_shares_in: constructPref(
+      true,
+      false
+    ),
+    resolutions_on_watched_markets_with_shares_in: constructPref(true, true),
+
+    //Balance Changes
+    loan_income: constructPref(true, false),
+    betting_streaks: constructPref(true, false),
+    referral_bonuses: constructPref(true, true),
+    unique_bettors_on_your_contract: constructPref(true, true),
+    tipped_comments_on_watched_markets: constructPref(true, true),
+    tips_on_your_markets: constructPref(true, true),
+    limit_order_fills: constructPref(true, false),
+
+    // General
+    tagged_user: constructPref(true, true),
+    on_new_follow: constructPref(true, true),
+    contract_from_followed_user: constructPref(true, true),
+    trending_markets: constructPref(false, true),
+    profit_loss_updates: constructPref(false, true),
+    probability_updates_on_watched_markets: constructPref(true, false),
+    thank_you_for_purchases: constructPref(false, false),
+    onboarding_flow: constructPref(false, false),
+
+    opt_out_all: [],
+    badges_awarded: constructPref(true, false),
+  }
+  return defaults
+}
+
+// Adding a new key:value here is optional, you can just use a key of notification_subscription_types
+// You might want to add a key:value here if there will be multiple notification reasons that map to the same
+// subscription type, i.e. 'comment_on_contract_you_follow' and 'comment_on_contract_with_users_answer' both map to
+// 'all_comments_on_watched_markets' subscription type
+// TODO: perhaps better would be to map notification_subscription_types to arrays of notification_reason_types
+const notificationReasonToSubscriptionType: Partial<
+  Record<notification_reason_types, notification_preference>
+> = {
+  you_referred_user: 'referral_bonuses',
+  user_joined_to_bet_on_your_market: 'referral_bonuses',
+  tip_received: 'tips_on_your_comments',
+  bet_fill: 'limit_order_fills',
+  user_joined_from_your_group_invite: 'referral_bonuses',
+  challenge_accepted: 'limit_order_fills',
+  betting_streak_incremented: 'betting_streaks',
+  liked_and_tipped_your_contract: 'tips_on_your_markets',
+  comment_on_your_contract: 'all_comments_on_my_markets',
+  answer_on_your_contract: 'all_answers_on_my_markets',
+  comment_on_contract_you_follow: 'all_comments_on_watched_markets',
+  answer_on_contract_you_follow: 'all_answers_on_watched_markets',
+  update_on_contract_you_follow: 'market_updates_on_watched_markets',
+  resolution_on_contract_you_follow: 'resolutions_on_watched_markets',
+  comment_on_contract_with_users_shares_in:
+    'all_comments_on_contracts_with_shares_in_on_watched_markets',
+  answer_on_contract_with_users_shares_in:
+    'all_answers_on_contracts_with_shares_in_on_watched_markets',
+  update_on_contract_with_users_shares_in:
+    'market_updates_on_watched_markets_with_shares_in',
+  resolution_on_contract_with_users_shares_in:
+    'resolutions_on_watched_markets_with_shares_in',
+  comment_on_contract_with_users_answer: 'all_comments_on_watched_markets',
+  update_on_contract_with_users_answer: 'market_updates_on_watched_markets',
+  resolution_on_contract_with_users_answer: 'resolutions_on_watched_markets',
+  answer_on_contract_with_users_answer: 'all_answers_on_watched_markets',
+  comment_on_contract_with_users_comment: 'all_comments_on_watched_markets',
+  answer_on_contract_with_users_comment: 'all_answers_on_watched_markets',
+  update_on_contract_with_users_comment: 'market_updates_on_watched_markets',
+  resolution_on_contract_with_users_comment: 'resolutions_on_watched_markets',
+  reply_to_users_answer: 'all_replies_to_my_answers_on_watched_markets',
+  reply_to_users_comment: 'all_replies_to_my_comments_on_watched_markets',
+}
+
+export const getNotificationDestinationsForUser = (
+  privateUser: PrivateUser,
+  // TODO: accept reasons array from most to least important and work backwards
+  reason: notification_reason_types | notification_preference
+) => {
+  const notificationSettings = privateUser.notificationPreferences
+  const unsubscribeEndpoint = getFunctionUrl('unsubscribe')
+  try {
+    let destinations
+    let subscriptionType: notification_preference | undefined
+    if (Object.keys(notificationSettings).includes(reason)) {
+      subscriptionType = reason as notification_preference
+      destinations = notificationSettings[subscriptionType]
+    } else {
+      const key = reason as notification_reason_types
+      subscriptionType = notificationReasonToSubscriptionType[key]
+      destinations = subscriptionType
+        ? notificationSettings[subscriptionType]
+        : []
+    }
+    const optOutOfAllSettings = notificationSettings['opt_out_all']
+    // Your market closure notifications are high priority, opt-out doesn't affect their delivery
+    const optedOutOfEmail =
+      optOutOfAllSettings.includes('email') &&
+      subscriptionType !== 'your_contract_closed'
+    const optedOutOfBrowser =
+      optOutOfAllSettings.includes('browser') &&
+      subscriptionType !== 'your_contract_closed'
+    return {
+      sendToEmail: destinations.includes('email') && !optedOutOfEmail,
+      sendToBrowser: destinations.includes('browser') && !optedOutOfBrowser,
+      unsubscribeUrl: `${unsubscribeEndpoint}?id=${privateUser.id}&type=${subscriptionType}`,
+      urlToManageThisNotification: `${DOMAIN}/notifications?tab=settings&section=${subscriptionType}`,
+    }
+  } catch (e) {
+    // Fail safely
+    console.log(
+      `couldn't get notification destinations for type ${reason} for user ${privateUser.id}`
+    )
+    return {
+      sendToEmail: false,
+      sendToBrowser: false,
+      unsubscribeUrl: '',
+      urlToManageThisNotification: '',
+    }
+  }
+}

common/user.ts

@@ -1,3 +1,7 @@
+import { notification_preferences } from './user-notification-preferences'
+import { ENV_CONFIG } from './envs/constants'
+import { MarketCreatorBadge, ProvenCorrectBadge, StreakerBadge } from './badge'
+
 export type User = {
   id: string
   createdTime: number
@@ -8,7 +12,6 @@ export type User = {
 
   // For their user page
   bio?: string
-  bannerUrl?: string
   website?: string
   twitterHandle?: string
   discordHandle?: string
@@ -30,30 +33,57 @@ export type User = {
     allTime: number
   }
 
+  fractionResolvedCorrectly: number
+
+  nextLoanCached: number
   followerCountCached: number
 
   followedCategories?: string[]
-}
+  homeSections?: string[]
 
-export const STARTING_BALANCE = 1000
-export const SUS_STARTING_BALANCE = 10 // for sus users, i.e. multiple sign ups for same person
+  referredByUserId?: string
+  referredByContractId?: string
+  referredByGroupId?: string
+  lastPingTime?: number
+  shouldShowWelcome?: boolean
+  lastBetTime?: number
+  currentBettingStreak?: number
+  hasSeenContractFollowModal?: boolean
+  freeMarketsCreated?: number
+  isBannedFromPosting?: boolean
+
+  achievements: {
+    provenCorrect?: {
+      badges: ProvenCorrectBadge[]
+    }
+    marketCreator?: {
+      badges: MarketCreatorBadge[]
+    }
+    streaker?: {
+      badges: StreakerBadge[]
+    }
+  }
+}
 
 export type PrivateUser = {
   id: string // same as User.id
   username: string // denormalized from User
 
   email?: string
-  unsubscribedFromResolutionEmails?: boolean
-  unsubscribedFromCommentEmails?: boolean
-  unsubscribedFromAnswerEmails?: boolean
-  unsubscribedFromGenericEmails?: boolean
+  weeklyTrendingEmailSent?: boolean
+  weeklyPortfolioUpdateEmailSent?: boolean
+  manaBonusEmailSent?: boolean
   initialDeviceToken?: string
   initialIpAddress?: string
   apiKey?: string
-  notificationPreferences?: notification_subscribe_types
+  notificationPreferences: notification_preferences
+  twitchInfo?: {
+    twitchName: string
+    controlToken: string
+    botEnabled?: boolean
+    needsRelinking?: boolean
+  }
 }
-
-export type notification_subscribe_types = 'all' | 'less' | 'none'
 
 export type PortfolioMetrics = {
   investmentValue: number
@@ -62,3 +92,16 @@ export type PortfolioMetrics = {
   timestamp: number
   userId: string
 }
+
+export const MANIFOLD_USER_USERNAME = 'ManifoldMarkets'
+export const MANIFOLD_USER_NAME = 'ManifoldMarkets'
+export const MANIFOLD_AVATAR_URL = 'https://manifold.markets/logo-bg-white.png'
+
+// TODO: remove. Hardcoding the strings would be better.
+// Different views require different language.
+export const BETTOR = ENV_CONFIG.bettor ?? 'trader'
+export const BETTORS = ENV_CONFIG.bettor + 's' ?? 'traders'
+export const PRESENT_BET = ENV_CONFIG.presentBet ?? 'trade'
+export const PRESENT_BETS = ENV_CONFIG.presentBet + 's' ?? 'trades'
+export const PAST_BET = ENV_CONFIG.pastBet ?? 'trade'
+export const PAST_BETS = ENV_CONFIG.pastBet + 's' ?? 'trades'

common/util/algos.ts

@@ -0,0 +1,22 @@
+export function binarySearch(
+  min: number,
+  max: number,
+  comparator: (x: number) => number
+) {
+  let mid = 0
+  while (true) {
+    mid = min + (max - min) / 2
+
+    // Break once we've reached max precision.
+    if (mid === min || mid === max) break
+
+    const comparison = comparator(mid)
+    if (comparison === 0) break
+    else if (comparison > 0) {
+      max = mid
+    } else {
+      min = mid
+    }
+  }
+  return mid
+}

common/util/array.ts

@@ -1,3 +1,40 @@
+import { isEqual } from 'lodash'
+
 export function filterDefined<T>(array: (T | null | undefined)[]) {
   return array.filter((item) => item !== null && item !== undefined) as T[]
 }
+
+export function buildArray<T>(
+  ...params: (T | T[] | false | undefined | null)[]
+) {
+  const array: T[] = []
+
+  for (const el of params) {
+    if (Array.isArray(el)) {
+      array.push(...el)
+    } else if (el) {
+      array.push(el)
+    }
+  }
+
+  return array
+}
+
+export function groupConsecutive<T, U>(xs: T[], key: (x: T) => U) {
+  if (!xs.length) {
+    return []
+  }
+  const result = []
+  let curr = { key: key(xs[0]), items: [xs[0]] }
+  for (const x of xs.slice(1)) {
+    const k = key(x)
+    if (!isEqual(key, curr.key)) {
+      result.push(curr)
+      curr = { key: k, items: [x] }
+    } else {
+      curr.items.push(x)
+    }
+  }
+  result.push(curr)
+  return result
+}

common/util/color.ts

@@ -0,0 +1,24 @@
+export const interpolateColor = (color1: string, color2: string, p: number) => {
+  const rgb1 = parseInt(color1.replace('#', ''), 16)
+  const rgb2 = parseInt(color2.replace('#', ''), 16)
+
+  const [r1, g1, b1] = toArray(rgb1)
+  const [r2, g2, b2] = toArray(rgb2)
+
+  const q = 1 - p
+  const rr = Math.round(r1 * q + r2 * p)
+  const rg = Math.round(g1 * q + g2 * p)
+  const rb = Math.round(b1 * q + b2 * p)
+
+  const hexString = Number((rr << 16) + (rg << 8) + rb).toString(16)
+  const hex = `#${'0'.repeat(6 - hexString.length)}${hexString}`
+  return hex
+}
+
+function toArray(rgb: number) {
+  const r = rgb >> 16
+  const g = (rgb >> 8) % 256
+  const b = rgb % 256
+
+  return [r, g, b]
+}

common/util/format.ts

@@ -8,7 +8,14 @@ const formatter = new Intl.NumberFormat('en-US', {
 })
 
 export function formatMoney(amount: number) {
-  const newAmount = Math.round(amount) === 0 ? 0 : Math.floor(amount) // handle -0 case
+  const newAmount =
+    // handle -0 case
+    Math.round(amount) === 0
+      ? 0
+      : // Handle 499.9999999999999 case
+        (amount > 0 ? Math.floor : Math.ceil)(
+          amount + 0.00000000001 * Math.sign(amount)
+        )
   return ENV_CONFIG.moneyMoniker + formatter.format(newAmount).replace('$', '')
 }
 
@@ -33,18 +40,34 @@ export function formatPercent(zeroToOne: number) {
   return (zeroToOne * 100).toFixed(decimalPlaces) + '%'
 }
 
+const showPrecision = (x: number, sigfigs: number) =>
+  // convert back to number for weird formatting reason
+  `${Number(x.toPrecision(sigfigs))}`
+
 // Eg 1234567.89 => 1.23M; 5678 => 5.68K
 export function formatLargeNumber(num: number, sigfigs = 2): string {
   const absNum = Math.abs(num)
-  if (absNum < 1000) {
-    return '' + Number(num.toPrecision(sigfigs))
-  }
+  if (absNum < 1) return showPrecision(num, sigfigs)
+
+  if (absNum < 100) return showPrecision(num, 2)
+  if (absNum < 1000) return showPrecision(num, 3)
+  if (absNum < 10000) return showPrecision(num, 4)
 
   const suffix = ['', 'K', 'M', 'B', 'T', 'Q']
-  const suffixIdx = Math.floor(Math.log10(absNum) / 3)
-  const suffixStr = suffix[suffixIdx]
-  const numStr = (num / Math.pow(10, 3 * suffixIdx)).toPrecision(sigfigs)
-  return `${Number(numStr)}${suffixStr}`
+  const i = Math.floor(Math.log10(absNum) / 3)
+
+  const numStr = showPrecision(num / Math.pow(10, 3 * i), sigfigs)
+  return `${numStr}${suffix[i] ?? ''}`
+}
+
+export function shortFormatNumber(num: number): string {
+  if (num < 1000) return showPrecision(num, 3)
+
+  const suffix = ['', 'K', 'M', 'B', 'T', 'Q']
+  const i = Math.floor(Math.log10(num) / 3)
+
+  const numStr = showPrecision(num / Math.pow(10, 3 * i), 2)
+  return `${numStr}${suffix[i] ?? ''}`
 }
 
 export function toCamelCase(words: string) {

common/util/math.ts

@@ -34,3 +34,17 @@ export function median(xs: number[]) {
 export function average(xs: number[]) {
   return sum(xs) / xs.length
 }
+
+const EPSILON = 0.00000001
+
+export function floatingEqual(a: number, b: number, epsilon = EPSILON) {
+  return Math.abs(a - b) < epsilon
+}
+
+export function floatingGreaterEqual(a: number, b: number, epsilon = EPSILON) {
+  return a + epsilon >= b
+}
+
+export function floatingLesserEqual(a: number, b: number, epsilon = EPSILON) {
+  return a - epsilon <= b
+}

common/util/object.ts

@@ -1,6 +1,6 @@
 import { union } from 'lodash'
 
-export const removeUndefinedProps = <T>(obj: T): T => {
+export const removeUndefinedProps = <T extends object>(obj: T): T => {
   const newObj: any = {}
 
   for (const key of Object.keys(obj)) {
@@ -37,4 +37,3 @@ export const subtractObjects = <T extends { [key: string]: number }>(
 
   return newObj as T
 }
-

common/util/parse.ts

@@ -1,29 +1,115 @@
-import { MAX_TAG_LENGTH } from '../contract'
+import { generateText, JSONContent, Node } from '@tiptap/core'
+import { generateJSON } from '@tiptap/html'
+// Tiptap starter extensions
+import { Blockquote } from '@tiptap/extension-blockquote'
+import { Bold } from '@tiptap/extension-bold'
+import { BulletList } from '@tiptap/extension-bullet-list'
+import { Code } from '@tiptap/extension-code'
+import { CodeBlock } from '@tiptap/extension-code-block'
+import { Document } from '@tiptap/extension-document'
+import { HardBreak } from '@tiptap/extension-hard-break'
+import { Heading } from '@tiptap/extension-heading'
+import { History } from '@tiptap/extension-history'
+import { HorizontalRule } from '@tiptap/extension-horizontal-rule'
+import { Italic } from '@tiptap/extension-italic'
+import { ListItem } from '@tiptap/extension-list-item'
+import { OrderedList } from '@tiptap/extension-ordered-list'
+import { Paragraph } from '@tiptap/extension-paragraph'
+import { Strike } from '@tiptap/extension-strike'
+import { Text } from '@tiptap/extension-text'
+// other tiptap extensions
+import { Image } from '@tiptap/extension-image'
+import { Link } from '@tiptap/extension-link'
+import { Mention } from '@tiptap/extension-mention'
+import Iframe from './tiptap-iframe'
+import TiptapTweet from './tiptap-tweet-type'
+import { find } from 'linkifyjs'
+import { uniq } from 'lodash'
+import { TiptapSpoiler } from './tiptap-spoiler'
 
-export function parseTags(text: string) {
-  const regex = /(?:^|\s)(?:[#][a-z0-9_]+)/gi
-  const matches = (text.match(regex) || []).map((match) =>
-    match.trim().substring(1).substring(0, MAX_TAG_LENGTH)
-  )
-  const tagSet = new Set()
-  const uniqueTags: string[] = []
-  // Keep casing of last tag.
-  matches.reverse()
-  for (const tag of matches) {
-    const lowercase = tag.toLowerCase()
-    if (!tagSet.has(lowercase)) {
-      tagSet.add(lowercase)
-      uniqueTags.push(tag)
-    }
-  }
-  uniqueTags.reverse()
-  return uniqueTags
+/** get first url in text. like "notion.so " -> "http://notion.so"; "notion" -> null */
+export function getUrl(text: string) {
+  const results = find(text, 'url')
+  return results.length ? results[0].href : null
 }
 
-export function parseWordsAsTags(text: string) {
-  const taggedText = text
-    .split(/\s+/)
-    .map((tag) => (tag.startsWith('#') ? tag : `#${tag}`))
-    .join(' ')
-  return parseTags(taggedText)
+// TODO: fuzzy matching
+export const wordIn = (word: string, corpus: string) =>
+  corpus.toLocaleLowerCase().includes(word.toLocaleLowerCase())
+
+const checkAgainstQuery = (query: string, corpus: string) =>
+  query.split(' ').every((word) => wordIn(word, corpus))
+
+export const searchInAny = (query: string, ...fields: string[]) =>
+  fields.some((field) => checkAgainstQuery(query, field))
+
+/** @return user ids of all \@mentions */
+export function parseMentions(data: JSONContent): string[] {
+  const mentions = data.content?.flatMap(parseMentions) ?? [] //dfs
+  if (data.type === 'mention' && data.attrs) {
+    mentions.push(data.attrs.id as string)
+  }
+  return uniq(mentions)
+}
+
+// TODO: this is a hack to get around the fact that tiptap doesn't have a
+// way to add a node view without bundling in tsx
+function skippableComponent(name: string): Node<any, any> {
+  return Node.create({
+    name,
+
+    group: 'block',
+
+    content: 'inline*',
+
+    parseHTML() {
+      return [
+        {
+          tag: 'grid-cards-component',
+        },
+      ]
+    },
+  })
+}
+
+const stringParseExts = [
+  // StarterKit extensions
+  Blockquote,
+  Bold,
+  BulletList,
+  Code,
+  CodeBlock,
+  Document,
+  HardBreak,
+  Heading,
+  History,
+  HorizontalRule,
+  Italic,
+  ListItem,
+  OrderedList,
+  Paragraph,
+  Strike,
+  Text,
+  // other extensions
+  Link,
+  Image.extend({ renderText: () => '[image]' }),
+  Mention, // user @mention
+  Mention.extend({ name: 'contract-mention' }), // market %mention
+  Iframe.extend({
+    renderText: ({ node }) =>
+      '[embed]' + node.attrs.src ? `(${node.attrs.src})` : '',
+  }),
+  skippableComponent('gridCardsComponent'),
+  skippableComponent('staticReactEmbedComponent'),
+  TiptapTweet.extend({ renderText: () => '[tweet]' }),
+  TiptapSpoiler.extend({ renderHTML: () => ['span', '[spoiler]', 0] }),
+]
+
+export function richTextToString(text?: JSONContent) {
+  if (!text) return ''
+  return generateText(text, stringParseExts)
+}
+
+export function htmlToRichText(html: string) {
+  return generateJSON(html, stringParseExts)
 }

common/util/random.ts

@@ -46,3 +46,10 @@ export const shuffle = (array: unknown[], rand: () => number) => {
     ;[array[i], array[swapIndex]] = [array[swapIndex], array[i]]
   }
 }
+
+export function chooseRandomSubset<T>(items: T[], count: number) {
+  const fiveMinutes = 5 * 60 * 1000
+  const seed = Math.round(Date.now() / fiveMinutes).toString()
+  shuffle(items, createRNG(seed))
+  return items.slice(0, count)
+}

common/util/time.ts

@@ -1,2 +1,6 @@
-export const HOUR_MS = 60 * 60 * 1000
+export const MINUTE_MS = 60 * 1000
+export const HOUR_MS = 60 * MINUTE_MS
 export const DAY_MS = 24 * HOUR_MS
+
+export const sleep = (ms: number) =>
+  new Promise((resolve) => setTimeout(resolve, ms))

common/util/tiptap-iframe.ts

@@ -0,0 +1,100 @@
+// Adopted from https://github.com/ueberdosis/tiptap/blob/main/demos/src/Experiments/Embeds/Vue/iframe.ts
+
+import { Node } from '@tiptap/core'
+
+export interface IframeOptions {
+  allowFullscreen: boolean
+  HTMLAttributes: {
+    [key: string]: any
+  }
+}
+
+declare module '@tiptap/core' {
+  interface Commands<ReturnType> {
+    iframe: {
+      setIframe: (options: { src: string }) => ReturnType
+    }
+  }
+}
+
+// These classes style the outer wrapper and the inner iframe;
+// Adopted from css in https://github.com/ueberdosis/tiptap/blob/main/demos/src/Experiments/Embeds/Vue/index.vue
+const wrapperClasses = 'relative h-auto w-full overflow-hidden'
+const iframeClasses = 'absolute top-0 left-0 h-full w-full'
+
+export default Node.create<IframeOptions>({
+  name: 'iframe',
+
+  group: 'block',
+
+  atom: true,
+
+  addOptions() {
+    return {
+      allowFullscreen: true,
+      HTMLAttributes: {
+        class: 'iframe-wrapper' + ' ' + wrapperClasses,
+        // Tailwind JIT doesn't seem to pick up `pb-[20rem]`, so we hack this in:
+        style: 'padding-bottom: 20rem; ',
+      },
+    }
+  },
+
+  addAttributes() {
+    return {
+      src: {
+        default: null,
+      },
+      frameborder: {
+        default: 0,
+      },
+      height: {
+        default: 0,
+      },
+      allowfullscreen: {
+        default: this.options.allowFullscreen,
+        parseHTML: () => this.options.allowFullscreen,
+      },
+    }
+  },
+
+  parseHTML() {
+    return [{ tag: 'iframe' }]
+  },
+
+  renderHTML({ HTMLAttributes }) {
+    this.options.HTMLAttributes.style =
+      this.options.HTMLAttributes.style +
+      ' height: ' +
+      HTMLAttributes.height +
+      ';'
+    return [
+      'div',
+      this.options.HTMLAttributes,
+      [
+        'iframe',
+        {
+          ...HTMLAttributes,
+          class: HTMLAttributes.class + ' ' + iframeClasses,
+        },
+      ],
+    ]
+  },
+
+  addCommands() {
+    return {
+      setIframe:
+        (options: { src: string }) =>
+        ({ tr, dispatch }) => {
+          const { selection } = tr
+          const node = this.type.create(options)
+
+          if (dispatch) {
+            tr.replaceRangeWith(selection.from, selection.to, node)
+          }
+
+          return true
+        },
+    }
+  },
+})

common/util/tiptap-spoiler.ts

@@ -0,0 +1,116 @@
+// adapted from @n8body/tiptap-spoiler
+
+import {
+  Mark,
+  markInputRule,
+  markPasteRule,
+  mergeAttributes,
+} from '@tiptap/core'
+import type { ElementType } from 'react'
+
+declare module '@tiptap/core' {
+  interface Commands<ReturnType> {
+    spoilerEditor: {
+      setSpoiler: () => ReturnType
+      toggleSpoiler: () => ReturnType
+      unsetSpoiler: () => ReturnType
+    }
+  }
+}
+
+export type SpoilerOptions = {
+  HTMLAttributes: Record<string, any>
+  spoilerOpenClass: string
+  spoilerCloseClass?: string
+  inputRegex: RegExp
+  pasteRegex: RegExp
+  as: ElementType
+}
+
+const spoilerInputRegex = /(?:^|\s)((?:\|\|)((?:[^||]+))(?:\|\|))$/
+const spoilerPasteRegex = /(?:^|\s)((?:\|\|)((?:[^||]+))(?:\|\|))/g
+
+export const TiptapSpoiler = Mark.create<SpoilerOptions>({
+  name: 'spoiler',
+
+  inline: true,
+  group: 'inline',
+  inclusive: false,
+  exitable: true,
+  content: 'inline*',
+
+  priority: 1001, // higher priority than other formatting so they go inside
+
+  addOptions() {
+    return {
+      HTMLAttributes: { 'aria-label': 'spoiler' },
+      spoilerOpenClass: '',
+      spoilerCloseClass: undefined,
+      inputRegex: spoilerInputRegex,
+      pasteRegex: spoilerPasteRegex,
+      as: 'span',
+      editing: false,
+    }
+  },
+
+  addCommands() {
+    return {
+      setSpoiler:
+        () =>
+        ({ commands }) =>
+          commands.setMark(this.name),
+      toggleSpoiler:
+        () =>
+        ({ commands }) =>
+          commands.toggleMark(this.name),
+      unsetSpoiler:
+        () =>
+        ({ commands }) =>
+          commands.unsetMark(this.name),
+    }
+  },
+
+  addInputRules() {
+    return [
+      markInputRule({
+        find: this.options.inputRegex,
+        type: this.type,
+      }),
+    ]
+  },
+
+  addPasteRules() {
+    return [
+      markPasteRule({
+        find: this.options.pasteRegex,
+        type: this.type,
+      }),
+    ]
+  },
+
+  parseHTML() {
+    return [
+      {
+        tag: 'span',
+        getAttrs: (node) =>
+          (node as HTMLElement).ariaLabel?.toLowerCase() === 'spoiler' && null,
+      },
+    ]
+  },
+
+  renderHTML({ HTMLAttributes }) {
+    const elem = document.createElement(this.options.as as string)
+
+    Object.entries(
+      mergeAttributes(this.options.HTMLAttributes, HTMLAttributes, {
+        class: this.options.spoilerCloseClass ?? this.options.spoilerOpenClass,
+      })
+    ).forEach(([attr, val]) => elem.setAttribute(attr, val))
+
+    elem.addEventListener('click', () => {
+      elem.setAttribute('class', this.options.spoilerOpenClass)
+    })
+
+    return elem
+  },
+})

common/util/tiptap-tweet-type.ts

@@ -0,0 +1,37 @@
+import { Node, mergeAttributes } from '@tiptap/core'
+
+export interface TweetOptions {
+  tweetId: string
+}
+
+// This is a version of the Tiptap Node config without addNodeView,
+// since that would require bundling in tsx
+export const TiptapTweetNode = {
+  name: 'tiptapTweet',
+  group: 'block',
+  atom: true,
+
+  addAttributes() {
+    return {
+      tweetId: {
+        default: null,
+      },
+    }
+  },
+
+  parseHTML() {
+    return [
+      {
+        tag: 'tiptap-tweet',
+      },
+    ]
+  },
+
+  renderHTML(props: { HTMLAttributes: Record<string, any> }) {
+    return ['tiptap-tweet', mergeAttributes(props.HTMLAttributes)]
+  },
+}
+
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-ignore
+export default Node.create<TweetOptions>(TiptapTweetNode)

dev.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+ENV=${1:-dev}
+case $ENV in
+    dev)
+      FIREBASE_PROJECT=dev
+      NEXT_ENV=DEV ;;
+    prod)
+      FIREBASE_PROJECT=prod
+      NEXT_ENV=PROD ;;
+    localdb)
+      FIREBASE_PROJECT=dev
+      NEXT_ENV=DEV
+      EMULATOR=true ;;
+    *)
+      echo "Invalid environment; must be dev, prod, or localdb."
+      exit 1
+esac
+
+firebase use $FIREBASE_PROJECT
+
+if [ ! -z $EMULATOR ]
+then
+  npx concurrently \
+      -n FIRESTORE,FUNCTIONS,NEXT,TS \
+      -c green,white,magenta,cyan \
+      "yarn --cwd=functions localDbScript" \
+      "cross-env FIRESTORE_EMULATOR_HOST=localhost:8080 yarn --cwd=functions dev" \
+      "cross-env NEXT_PUBLIC_FUNCTIONS_URL=http://localhost:8088 \
+               NEXT_PUBLIC_FIREBASE_EMULATE=TRUE \
+               NEXT_PUBLIC_FIREBASE_ENV=${NEXT_ENV} \
+               yarn --cwd=web serve" \
+      "cross-env yarn --cwd=web ts-watch"
+else
+  npx concurrently \
+      -n FUNCTIONS,NEXT,TS \
+      -c white,magenta,cyan \
+      "yarn --cwd=functions dev" \
+      "cross-env NEXT_PUBLIC_FUNCTIONS_URL=http://localhost:8088 \
+               NEXT_PUBLIC_FIREBASE_ENV=${NEXT_ENV} \
+               yarn --cwd=web serve" \
+      "cross-env yarn --cwd=web ts-watch"
+fi

docs/docs/api.md

@@ -34,6 +34,54 @@ response was a 4xx or 5xx.)
 
 ## Endpoints
 
+### `GET /v0/user/[username]`
+
+Gets a user by their username. Remember that usernames may change.
+
+Requires no authorization.
+
+### `GET /v0/user/by-id/[id]`
+
+Gets a user by their unique ID. Many other API endpoints return this as the `userId`.
+
+Requires no authorization.
+
+### GET /v0/me
+
+Returns the authenticated user.
+
+### `GET /v0/groups`
+
+Gets all groups, in no particular order.
+
+Parameters:
+
+- `availableToUserId`: Optional. if specified, only groups that the user can
+  join and groups they've already joined will be returned.
+
+Requires no authorization.
+
+### `GET /v0/group/[slug]`
+
+Gets a group by its slug.
+
+Requires no authorization.
+Note: group is singular in the URL.
+
+### `GET /v0/group/by-id/[id]`
+
+Gets a group by its unique ID.
+
+Requires no authorization.
+Note: group is singular in the URL.
+
+### `GET /v0/group/by-id/[id]/markets`
+
+Gets a group's markets by its unique ID.
+
+Requires no authorization.
+Note: group is singular in the URL.
+
 ### `GET /v0/markets`
 
 Lists all markets, ordered by creation date descending.
@@ -63,7 +111,6 @@ Requires no authorization.
       "creatorAvatarUrl":"https://lh3.googleusercontent.com/a-/AOh14GiZyl1lBehuBMGyJYJhZd-N-mstaUtgE4xdI22lLw=s96-c",
       "closeTime":1653893940000,
       "question":"Will I write a new blog post today?",
-      "description":"I'm supposed to, or else Beeminder charges me $90.\nTentative topic ideas:\n- \"Manifold funding, a history\"\n- \"Markets and bounties allow trades through time\"\n- \"equity vs money vs time\"\n\nClose date updated to 2022-05-29 11:59 pm",
       "tags":[
         "personal",
         "commitments"
@@ -101,7 +148,6 @@ Requires no authorization.
     // Market attributes. All times are in milliseconds since epoch
     closeTime?: number // Min of creator's chosen date, and resolutionTime
     question: string
-    description: string
 
     // A list of tags on each market. Any user can add tags to any market.
     // This list also includes the predefined categories shown as filters on the home page.
@@ -112,13 +158,16 @@ Requires no authorization.
     //   i.e. https://manifold.markets/Austin/test-market is the same as https://manifold.markets/foo/test-market
     url: string
 
-    outcomeType: string // BINARY, FREE_RESPONSE, or NUMERIC
+    outcomeType: string // BINARY, FREE_RESPONSE, MULTIPLE_CHOICE, NUMERIC, or PSEUDO_NUMERIC
     mechanism: string // dpm-2 or cpmm-1
 
-    pool: number // sum of YES and NO shares in liquidity pool for CPMM, null for DPM
     probability: number
-    p?: number // probability constant in y^p * n^(1-p) = k
-    totalLiquidity?: number
+    pool: { outcome: number } // For CPMM markets, the number of shares in the liquidity pool. For DPM markets, the amount of mana invested in each answer.
+    p?: number // CPMM markets only, probability constant in y^p * n^(1-p) = k
+    totalLiquidity?: number // CPMM markets only, the amount of mana deposited into the liquidity pool
+    min?: number // PSEUDO_NUMERIC markets only, the minimum resolvable value
+    max?: number // PSEUDO_NUMERIC markets only, the maximum resolvable value
+    isLogScale?: bool // PSEUDO_NUMERIC markets only, if true `number = (max - min + 1)^probability + minstart - 1`, otherwise `number = min + (max - min) * probability`
 
     volume: number
     volume7Days: number
@@ -127,6 +176,9 @@ Requires no authorization.
     isResolved: boolean
     resolutionTime?: number
     resolution?: string
+    resolutionProbability?: number // Used for BINARY markets resolved to MKT
+
+    lastUpdatedTime?: number
   }
   ```
 
@@ -230,7 +282,8 @@ Requires no authorization.
         "userName": "James Grugett",
         "userUsername": "JamesGrugett",
         "id": "F7fvHGhTiFal8uTsUc9P",
-        "userAvatarUrl":"https://lh3.googleusercontent.com/a-/AOh14GjC83uMe-fEfzd6QvxiK6ZqZdlMytuHxevgMYIkpAI=s96-c","replyToCommentId":"ZdHIyfQazHyl8nI0ENS7",
+        "userAvatarUrl": "https://lh3.googleusercontent.com/a-/AOh14GjC83uMe-fEfzd6QvxiK6ZqZdlMytuHxevgMYIkpAI=s96-c",
+        "replyToCommentId": "ZdHIyfQazHyl8nI0ENS7",
         "text": "@Angela Sorry! There was an error that automatically resolved several markets that were created in the last few hours.",
         "createdTime": 1655266286514,
         "userId": "5LZ4LgYuySdL1huCWe7bti02ghx2",
@@ -245,7 +298,8 @@ Requires no authorization.
         "userUsername": "Angela",
         "createdTime": 1655277581308,
         "userAvatarUrl": "https://firebasestorage.googleapis.com/v0/b/mantic-markets.appspot.com/o/user-images%2FAngela%2F50463444807_edfd4598d6_o.jpeg?alt=media&token=ef44e13b-2e6c-4498-b9c4-8e38bdaf1476"
-      },{
+      },
+      {
         "userAvatarUrl": "https://firebasestorage.googleapis.com/v0/b/mantic-markets.appspot.com/o/user-images%2FAngela%2F50463444807_edfd4598d6_o.jpeg?alt=media&token=ef44e13b-2e6c-4498-b9c4-8e38bdaf1476",
         "userName": "Angela",
         "text": "from my end it looks like no one did",
@@ -357,7 +411,9 @@ Requires no authorization.
   type FullMarket = LiteMarket & {
     bets: Bet[]
     comments: Comment[]
-    answers?: Answer[]
+    answers?: Answer[] // dpm-2 markets only
+    description: JSONContent // Rich text content. See https://tiptap.dev/guide/output#option-1-json
+    textDescription: string // string description without formatting, images, or embeds
   }
 
   type Bet = {
@@ -395,6 +451,64 @@ Requires no authorization.
   ```
 - Response type: A `FullMarket` ; same as above.
 
+### `GET /v0/users`
+
+Lists all users.
+
+Requires no authorization.
+
+- Example request
+  ```
+  https://manifold.markets/api/v0/users
+  ```
+- Example response
+  ```json
+  [
+    {
+      "id":"igi2zGXsfxYPgB0DJTXVJVmwCOr2",
+      "createdTime":1639011767273,
+      "name":"Austin",
+      "username":"Austin",
+      "url":"https://manifold.markets/Austin",
+      "avatarUrl":"https://lh3.googleusercontent.com/a-/AOh14GiZyl1lBehuBMGyJYJhZd-N-mstaUtgE4xdI22lLw=s96-c",
+      "bio":"I build Manifold! Always happy to chat; reach out on Discord or find a time on https://calendly.com/austinchen/manifold!",
+      "bannerUrl":"https://images.unsplash.com/photo-1501523460185-2aa5d2a0f981?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1531&q=80",
+      "website":"https://blog.austn.io",
+      "twitterHandle":"akrolsmir",
+      "discordHandle":"akrolsmir#4125",
+      "balance":9122.607163564959,
+      "totalDeposits":10339.004780544328,
+      "totalPnLCached":9376.601262721899,
+      "creatorVolumeCached":76078.46984199001
+    }
+  ```
+- Response type: Array of `LiteUser`
+
+  ```tsx
+  // Basic information about a user
+  type LiteUser = {
+    id: string // user's unique id
+    createdTime: number
+
+    name: string // display name, may contain spaces
+    username: string // username, used in urls
+    url: string // link to user's profile
+    avatarUrl?: string
+
+    bio?: string
+    bannerUrl?: string
+    website?: string
+    twitterHandle?: string
+    discordHandle?: string
+
+    // Note: the following are here for convenience only and may be removed in the future.
+    balance: number
+    totalDeposits: number
+    totalPnLCached: number
+    creatorVolumeCached: number
+  }
+  ```
+
 ### `POST /v0/bet`
 
 Places a new bet on behalf of the authorized user.
@@ -408,6 +522,20 @@ Parameters:
   answer. For numeric markets, this is a string representing the target bucket,
   and an additional `value` parameter is required which is a number representing
   the target value. (Bet on numeric markets at your own peril.)
+- `limitProb`: Optional. A number between `0.001` and `0.999` inclusive representing
+  the limit probability for your bet (i.e. 0.1% to 99.9% — multiply by 100 for the
+  probability percentage).
+  The bet will execute immediately in the direction of `outcome`, but not beyond this
+  specified limit. If not all the bet is filled, the bet will remain as an open offer
+  that can later be matched against an opposite direction bet.
+  - For example, if the current market probability is `50%`:
+    - A `M$10` bet on `YES` with `limitProb=0.4` would not be filled until the market
+      probability moves down to `40%` and someone bets `M$15` of `NO` to match your
+      bet odds.
+    - A `M$100` bet on `YES` with `limitProb=0.6` would fill partially or completely
+      depending on current unfilled limit bets and the AMM's liquidity. Any remaining
+      portion of the bet not filled would remain to be matched against in the future.
+  - An unfilled limit order bet can be cancelled using the cancel API.
 
 Example request:
 
@@ -419,15 +547,20 @@ $ curl https://manifold.markets/api/v0/bet -X POST -H 'Content-Type: application
                  "contractId":"{...}"}'
 ```
 
+### `POST /v0/bet/cancel/[id]`
+
+Cancel the limit order of a bet with the specified id. If the bet was unfilled, it will be cancelled so that no other bets will match with it. This is action irreversable.
+
 ### `POST /v0/market`
 
 Creates a new market on behalf of the authorized user.
 
 Parameters:
 
-- `outcomeType`: Required. One of `BINARY`, `FREE_RESPONSE`, or `NUMERIC`.
+- `outcomeType`: Required. One of `BINARY`, `FREE_RESPONSE`, `MULTIPLE_CHOICE`, or `PSEUDO_NUMERIC`.
 - `question`: Required. The headline question for the market.
 - `description`: Required. A long description describing the rules for the market.
+  - Note: string descriptions do **not** turn into links, mentions, formatted text. Instead, rich text descriptions must be in [TipTap json](https://tiptap.dev/guide/output#option-1-json).
 - `closeTime`: Required. The time at which the market will close, represented as milliseconds since the epoch.
 - `tags`: Optional. An array of string tags for the market.
 
@@ -439,6 +572,12 @@ For numeric markets, you must also provide:
 
 - `min`: The minimum value that the market may resolve to.
 - `max`: The maximum value that the market may resolve to.
+- `isLogScale`: If true, your numeric market will increase exponentially from min to max.
+- `initialValue`: An initial value for the market, between min and max, exclusive.
+
+For multiple choice markets, you must also provide:
+
+- `answers`: An array of strings, each of which will be a valid answer for the market.
 
 Example request:
 
@@ -452,8 +591,197 @@ $ curl https://manifold.markets/api/v0/market -X POST -H 'Content-Type: applicat
                  "initialProb":25}'
 ```
 
+### `POST /v0/market/[marketId]/add-liquidity`
+
+Adds a specified amount of liquidity into the market.
+
+- `amount`: Required. The amount of liquidity to add, in M$.
+
+### `POST /v0/market/[marketId]/close`
+
+Closes a market on behalf of the authorized user.
+
+- `closeTime`: Optional. Milliseconds since the epoch to close the market at. If not provided, the market will be closed immediately. Cannot provide close time in past.
+
+### `POST /v0/market/[marketId]/resolve`
+
+Resolves a market on behalf of the authorized user.
+
+Parameters:
+
+For binary markets:
+
+- `outcome`: Required. One of `YES`, `NO`, `MKT`, or `CANCEL`.
+- `probabilityInt`: Optional. The probability to use for `MKT` resolution.
+
+For free response or multiple choice markets:
+
+- `outcome`: Required. One of `MKT`, `CANCEL`, or a `number` indicating the answer index.
+- `resolutions`: An array of `{ answer, pct }` objects to use as the weights for resolving in favor of multiple free response options. Can only be set with `MKT` outcome. Note that the total weights must add to 100.
+
+For numeric markets:
+
+- `outcome`: Required. One of `CANCEL`, or a `number` indicating the selected numeric bucket ID.
+- `value`: The value that the market may resolves to.
+- `probabilityInt`: Required if `value` is present. Should be equal to
+  - If log scale: `log10(value - min + 1) / log10(max - min + 1)`
+  - Otherwise: `(value - min) / (max - min)`
+
+Example request:
+
+```
+# Resolve a binary market
+$ curl https://manifold.markets/api/v0/market/{marketId}/resolve -X POST \
+    -H 'Content-Type: application/json' \
+    -H 'Authorization: Key {...}' \
+    --data-raw '{"outcome": "YES"}'
+
+# Resolve a binary market with a specified probability
+$ curl https://manifold.markets/api/v0/market/{marketId}/resolve -X POST \
+    -H 'Content-Type: application/json' \
+    -H 'Authorization: Key {...}' \
+    --data-raw '{"outcome": "MKT", \
+                 "probabilityInt": 75}'
+
+# Resolve a free response market with a single answer chosen
+$ curl https://manifold.markets/api/v0/market/{marketId}/resolve -X POST \
+    -H 'Content-Type: application/json' \
+    -H 'Authorization: Key {...}' \
+    --data-raw '{"outcome": 2}'
+
+# Resolve a free response market with multiple answers chosen
+$ curl https://manifold.markets/api/v0/market/{marketId}/resolve -X POST \
+    -H 'Content-Type: application/json' \
+    -H 'Authorization: Key {...}' \
+    --data-raw '{"outcome": "MKT", \
+                 "resolutions": [ \
+                   {"answer": 0, "pct": 50}, \
+                   {"answer": 2, "pct": 50} \
+                 ]}'
+```
+
+### `POST /v0/market/[marketId]/sell`
+
+Sells some quantity of shares in a binary market on behalf of the authorized user.
+
+Parameters:
+
+- `outcome`: Optional. One of `YES`, or `NO`. If you leave it off, and you only
+  own one kind of shares, you will sell that kind of shares.
+- `shares`: Optional. The amount of shares to sell of the outcome given
+  above. If not provided, all the shares you own will be sold.
+
+Example request:
+
+```
+$ curl https://manifold.markets/api/v0/market/{marketId}/sell -X POST \
+    -H 'Content-Type: application/json' \
+    -H 'Authorization: Key {...}' \
+    --data-raw '{"outcome": "YES", "shares": 10}'
+```
+
+### `POST /v0/comment`
+
+Creates a comment in the specified market. Only supports top-level comments for now.
+
+Parameters:
+
+- `contractId`: Required. The ID of the market to comment on.
+- `content`: The comment to post, formatted as [TipTap json](https://tiptap.dev/guide/output#option-1-json), OR
+- `html`: The comment to post, formatted as an HTML string, OR
+- `markdown`: The comment to post, formatted as a markdown string.
+
+### `GET /v0/bets`
+
+Gets a list of bets, ordered by creation date descending.
+
+Parameters:
+
+- `username`: Optional. If set, the response will include only bets created by this user.
+- `market`: Optional. The slug of a market. If set, the response will only include bets on this market.
+- `limit`: Optional. How many bets to return. The maximum and the default is 1000.
+- `before`: Optional. The ID of the bet before which the list will start. For
+  example, if you ask for the most recent 10 bets, and then perform a second
+  query for 10 more bets with `before=[the id of the 10th bet]`, you will
+  get bets 11 through 20.
+
+Requires no authorization.
+
+- Example request
+  ```
+  https://manifold.markets/api/v0/bets?username=ManifoldMarkets&market=will-i-be-able-to-place-a-limit-ord
+  ```
+- Response type: A `Bet[]`.
+
+- <details><summary>Example response</summary><p>
+
+  ```json
+  [
+    // Limit bet, partially filled.
+    {
+      "isFilled": false,
+      "amount": 15.596681605353808,
+      "userId": "IPTOzEqrpkWmEzh6hwvAyY9PqFb2",
+      "contractId": "Tz5dA01GkK5QKiQfZeDL",
+      "probBefore": 0.5730753474948571,
+      "isCancelled": false,
+      "outcome": "YES",
+      "fees": { "creatorFee": 0, "liquidityFee": 0, "platformFee": 0 },
+      "shares": 31.193363210707616,
+      "limitProb": 0.5,
+      "id": "yXB8lVbs86TKkhWA1FVi",
+      "loanAmount": 0,
+      "orderAmount": 100,
+      "probAfter": 0.5730753474948571,
+      "createdTime": 1659482775970,
+      "fills": [
+        {
+          "timestamp": 1659483249648,
+          "matchedBetId": "MfrMd5HTiGASDXzqibr7",
+          "amount": 15.596681605353808,
+          "shares": 31.193363210707616
+        }
+      ]
+    },
+    // Normal bet (no limitProb specified).
+    {
+      "shares": 17.350459904608414,
+      "probBefore": 0.5304358279113885,
+      "isFilled": true,
+      "probAfter": 0.5730753474948571,
+      "userId": "IPTOzEqrpkWmEzh6hwvAyY9PqFb2",
+      "amount": 10,
+      "contractId": "Tz5dA01GkK5QKiQfZeDL",
+      "id": "1LPJHNz5oAX4K6YtJlP1",
+      "fees": {
+        "platformFee": 0,
+        "liquidityFee": 0,
+        "creatorFee": 0.4251333951457593
+      },
+      "isCancelled": false,
+      "loanAmount": 0,
+      "orderAmount": 10,
+      "fills": [
+        {
+          "amount": 10,
+          "matchedBetId": null,
+          "shares": 17.350459904608414,
+          "timestamp": 1659482757271
+        }
+      ],
+      "createdTime": 1659482757271,
+      "outcome": "YES"
+    }
+  ]
+  ```
+
+  </p>
+  </details>
+
 ## Changelog
 
+- 2022-09-24: Expand market POST docs to include new market types (`PSEUDO_NUMERIC`, `MULTIPLE_CHOICE`)
+- 2022-07-15: Add user by username and user by ID APIs
 - 2022-06-08: Add paging to markets endpoint
 - 2022-06-05: Add new authorized write endpoints
 - 2022-02-28: Add `resolutionTime` to markets, change `closeTime` definition

docs/docs/awesome-manifold.md

@@ -8,15 +8,40 @@ A list of community-created projects built on, or related to, Manifold Markets.
 
 ## Sites using Manifold
 
-- [CivicDashboard](https://civicdash.org/dashboard) - Uses Manifold to for tracked solutions for the SF city government
-- [Research.Bet](https://research.bet/) - Prediction market for scientific papers, using Manifold
+- [WagerWith.me](https://www.wagerwith.me/) — Bet with your friends, with full Manifold integration to bet with M$.
+- [Alignment Markets](https://alignmentmarkets.com/) - Bet on the progress of benchmarks in ML safety!
 
 ## API / Dev
 
 - [PyManifold](https://github.com/bcongdon/PyManifold) - Python client for the Manifold API
+  - [PyManifold fork](https://github.com/gappleto97/PyManifold/) - Fork maintained by [@LivInTheLookingGlass](https://manifold.markets/LivInTheLookingGlass)
 - [manifold-markets-python](https://github.com/vluzko/manifold-markets-python) - Python tools for working with Manifold Markets (including various accuracy metrics)
+- [ManifoldMarketManager](https://github.com/gappleto97/ManifoldMarketManager) - Python script and library to automatically manage markets
 - [manifeed](https://github.com/joy-void-joy/manifeed) - Tool that creates an RSS feed for new Manifold markets
+- [manifold-sdk](https://github.com/keriwarr/manifold-sdk) - TypeScript/JavaScript client for the Manifold API
 
 ## Bots
 
 - [@manifold@botsin.space](https://botsin.space/@manifold) - Posts new Manifold markets to Mastodon
+- [James' Bot](https://github.com/manifoldmarkets/market-maker) — Simple trading bot that makes markets
+- [mana](https://github.com/AnnikaCodes/mana) - A Discord bot for Manifold by [@arae](https://manifold.markets/arae)
+
+## Writeups
+
+- [Information Markets, Decision Markets, Attention Markets, Action Markets](https://astralcodexten.substack.com/p/information-markets-decision-markets) by Scott Alexander
+- [Mismatched Monetary Motivation in Manifold Markets](https://kevin.zielnicki.com/2022/02/17/manifold/) by Kevin Zielnicki
+- [Introducing the Salem/CSPI Forecasting Tournament](https://www.cspicenter.com/p/introducing-the-salemcspi-forecasting) by Richard Hanania
+- [What I learned about running a betting market game night contest](https://shakeddown.wordpress.com/2022/08/04/what-i-learned-about-running-a-betting-market-game-night-contest/) by shakeddown
+- [Free-riding on prediction markets](https://pedunculate.substack.com/p/free-riding-on-prediction-markets) by John Roxton
+
+## Art
+
+- Folded origami and doodles by [@hamnox](https://manifold.markets/hamnox) ![](https://i.imgur.com/nVGY4pL.png)
+- Laser-cut Foldy by [@wasabipesto](https://manifold.markets/wasabipesto) ![](https://i.imgur.com/g9S6v3P.jpg)
+
+## Alumni
+
+_These projects are no longer active, but were really really cool!_
+
+- [Research.Bet](https://research.bet/) - Prediction market for scientific papers, using Manifold
+- [CivicDashboard](https://civicdash.org/dashboard) - Uses Manifold to for tracked solutions for the SF city government

docs/docs/bounties.md

@@ -15,6 +15,22 @@ Our community is the beating heart of Manifold; your individual contributions ar
 
 ## Awarded bounties
 
+💥 *Awarded on 2022-10-07*
+
+**[Pepe](https://manifold.markets/Pepe): M$10,000**
+**[Jack](https://manifold.markets/jack): M$2,000**
+**[Martin](https://manifold.markets/MartinRandall): M$2,000**
+**[Yev](https://manifold.markets/Yev): M$2,000**
+**[Michael](https://manifold.markets/MichaelWheatley): M$2,000**
+
+- For discovering an infinite mana exploit using limit orders, and informing the Manifold team of it privately.
+
+**[Matt](https://manifold.markets/MattP): M$5,000**
+**[Adrian](https://manifold.markets/ahalekelly): M$5,000**
+**[Yev](https://manifold.markets/Yev): M$5,000**
+
+- For discovering an AMM liquidity exploit and informing the Manifold team of it privately.
+
 🎈 *Awarded on 2022-06-14*
 
 **[Wasabipesto](https://manifold.markets/wasabipesto): M$20,000**

docs/docs/faq.md

@@ -4,11 +4,7 @@
 
 ### Do I have to pay real money in order to participate?
 
-Nope! Each account starts with a free M$1000. If you invest it wisely, you can increase your total without ever needing to put any real money into the site.
-
-### What is the name for the currency Manifold uses, represented by M$?
-
-Manifold Dollars, or mana for short.
+Nope! Each account starts with a free 1000 mana (or M$1000 for short). If you invest it wisely, you can increase your total without ever needing to put any real money into the site.
 
 ### Can M$ be sold for real money?
 

docs/docs/market-details.md

@@ -19,7 +19,6 @@ for the pool to be sorted into.
 - Users can create a market on any question they want.
 - When a user creates a market, they must choose a close date, after which trading will halt.
 - They must also pay a M$100 market creation fee, which is used as liquidity to subsidize trading on the market.
-  - The creation fee for the first market created each day is provided by Manifold.
 - The market creator will earn a commission on all bets placed in the market.
 - The market creator is responsible for resolving each market in a timely manner. All fees earned as a commission will be paid out after resolution.
 - Creators can also resolve N/A to cancel all transactions and reverse all transactions made on the market - this includes profits from selling shares.

docs/docusaurus.config.js

@@ -26,8 +26,7 @@ const config = {
         docs: {
           routeBasePath: '/',
           sidebarPath: require.resolve('./sidebars.js'),
-          // Please change this to your repo.
-          editUrl: 'https://github.com/manifoldmarkets/manifold/tree/main/docs/docs',
+          editUrl: 'https://github.com/manifoldmarkets/manifold/tree/main/docs',
           remarkPlugins: [math],
           rehypePlugins: [katex],
         },
@@ -72,7 +71,7 @@ const config = {
             label: 'Docs',
           },
           {
-            href: 'https://github.com/manifoldmarkets/docs',
+            href: 'https://github.com/manifoldmarkets/manifold/tree/main/docs/docs',
             label: 'GitHub',
             position: 'right',
           },
@@ -116,7 +115,7 @@ const config = {
               },
               {
                 label: 'GitHub',
-                href: 'https://github.com/manifoldmarkets/docs',
+                href: 'https://github.com/manifoldmarkets/manifold/',
               },
             ],
           },

docs/package.json

@@ -30,7 +30,8 @@
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "2.0.0-beta.17",
-    "@tsconfig/docusaurus": "^1.0.4"
+    "@tsconfig/docusaurus": "^1.0.4",
+    "@types/react": "^17.0.2"
   },
   "browserslist": {
     "production": [

firebase.json

@@ -1,11 +1,31 @@
 {
   "functions": {
-    "predeploy": "npm --prefix \"$RESOURCE_DIR\" run build",
-    "runtime": "nodejs12",
-    "source": "functions"
+    "predeploy": "cd functions && yarn build",
+    "runtime": "nodejs16",
+    "source": "functions/dist",
+    "ignore": [
+      "node_modules",
+      ".git",
+      "firebase-debug.log",
+      "firebase-debug.*.log"
+    ]
   },
   "firestore": {
     "rules": "firestore.rules",
     "indexes": "firestore.indexes.json"
+  },
+  "emulators": {
+    "functions": {
+      "port": 5001
+    },
+    "firestore": {
+      "port": 8080
+    },
+    "pubsub": {
+      "port": 8085
+    },
+    "ui": {
+      "enabled": true
+    }
   }
 }

firestore.indexes.json

@@ -1,5 +1,161 @@
 {
   "indexes": [
+    {
+      "collectionGroup": "bets",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "isAnte",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "isRedemption",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "bets",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "isFilled",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "bets",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "bets",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isCancelled",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "isFilled",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "challenges",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "creatorId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "comments",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "commentType",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "comments",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "comments",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "comments",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "creatorId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "ASCENDING"
+        }
+      ]
+    },
     {
       "collectionGroup": "contracts",
       "queryScope": "COLLECTION",
@@ -14,6 +170,56 @@
         }
       ]
     },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "creatorId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "popularityScore",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "groupSlugs",
+          "arrayConfig": "CONTAINS"
+        },
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "popularityScore",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "autoResolutionTime",
+          "order": "ASCENDING"
+        }
+      ]
+    },
     {
       "collectionGroup": "contracts",
       "queryScope": "COLLECTION",
@@ -46,6 +252,46 @@
         }
       ]
     },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "visibility",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "closeTime",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "popularityScore",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "visibility",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "popularityScore",
+          "order": "DESCENDING"
+        }
+      ]
+    },
     {
       "collectionGroup": "contracts",
       "queryScope": "COLLECTION",
@@ -104,6 +350,24 @@
         }
       ]
     },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "visibility",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "volume7Days",
+          "order": "ASCENDING"
+        }
+      ]
+    },
     {
       "collectionGroup": "contracts",
       "queryScope": "COLLECTION",
@@ -118,6 +382,84 @@
         }
       ]
     },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "volume7Days",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "volume7Days",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "closeTime",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "volume7Days",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isResolved",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "volume7Days",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "contracts",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "lowercaseTags",
+          "arrayConfig": "CONTAINS"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
     {
       "collectionGroup": "contracts",
       "queryScope": "COLLECTION",
@@ -131,6 +473,80 @@
           "order": "DESCENDING"
         }
       ]
+    },
+    {
+      "collectionGroup": "manalinks",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "fromId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "notifications",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "isSeen",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "portfolioHistory",
+      "queryScope": "COLLECTION_GROUP",
+      "fields": [
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "timestamp",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "portfolioHistory",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "userId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "timestamp",
+          "order": "ASCENDING"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "txns",
+      "queryScope": "COLLECTION",
+      "fields": [
+        {
+          "fieldPath": "toId",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "toType",
+          "order": "ASCENDING"
+        },
+        {
+          "fieldPath": "createdTime",
+          "order": "DESCENDING"
+        }
+      ]
     }
   ],
   "fieldOverrides": [
@@ -204,6 +620,28 @@
         }
       ]
     },
+    {
+      "collectionGroup": "bets",
+      "fieldPath": "id",
+      "indexes": [
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "DESCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "arrayConfig": "CONTAINS",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION_GROUP"
+        }
+      ]
+    },
     {
       "collectionGroup": "bets",
       "fieldPath": "userId",
@@ -226,6 +664,28 @@
         }
       ]
     },
+    {
+      "collectionGroup": "comments",
+      "fieldPath": "contractId",
+      "indexes": [
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "DESCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "arrayConfig": "CONTAINS",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION_GROUP"
+        }
+      ]
+    },
     {
       "collectionGroup": "comments",
       "fieldPath": "createdTime",
@@ -295,6 +755,50 @@
           "queryScope": "COLLECTION_GROUP"
         }
       ]
+    },
+    {
+      "collectionGroup": "follows",
+      "fieldPath": "userId",
+      "indexes": [
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "DESCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "arrayConfig": "CONTAINS",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION_GROUP"
+        }
+      ]
+    },
+    {
+      "collectionGroup": "portfolioHistory",
+      "fieldPath": "timestamp",
+      "indexes": [
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "DESCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "arrayConfig": "CONTAINS",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION_GROUP"
+        }
+      ]
     }
   ]
 }

firestore.rules

@@ -6,37 +6,89 @@ service cloud.firestore {
   match /databases/{database}/documents {
 
     function isAdmin() {
-      return request.auth.uid == 'igi2zGXsfxYPgB0DJTXVJVmwCOr2' // Austin
-             || request.auth.uid == '5LZ4LgYuySdL1huCWe7bti02ghx2' // James
-             || request.auth.uid == 'tlmGNz9kjXc2EteizMORes4qvWl2' // Stephen
-             || request.auth.uid == 'IPTOzEqrpkWmEzh6hwvAyY9PqFb2' // Manifold
+      return request.auth.token.email in [
+        'akrolsmir@gmail.com',
+        'jahooma@gmail.com',
+        'taowell@gmail.com',
+        'abc.sinclair@gmail.com',
+        'manticmarkets@gmail.com',
+        'iansphilips@gmail.com',
+        'd4vidchee@gmail.com',
+        'federicoruizcassarino@gmail.com',
+        'ingawei@gmail.com'
+      ]
+    }
+
+    match /stats/stats {
+      allow read;
+    }
+
+    match /globalConfig/globalConfig {
+      allow read;
+      allow update: if isAdmin()
+      allow create: if isAdmin()
     }
 
     match /users/{userId} {
       allow read;
-      allow update: if resource.data.id == request.auth.uid
+      allow update: if userId == request.auth.uid
                        && request.resource.data.diff(resource.data).affectedKeys()
-                                                                    .hasOnly(['bio', 'bannerUrl', 'website', 'twitterHandle', 'discordHandle', 'followedCategories']);
+                                                                    .hasOnly(['bio', 'website', 'twitterHandle', 'discordHandle', 'followedCategories', 'lastPingTime','shouldShowWelcome', 'hasSeenContractFollowModal', 'homeSections']);
+      // User referral rules
+      allow update: if userId == request.auth.uid
+                         && request.resource.data.diff(resource.data).affectedKeys()
+                          .hasOnly(['referredByUserId', 'referredByContractId', 'referredByGroupId'])
+                          // only one referral allowed per user
+                          && !("referredByUserId" in resource.data)
+                          // user can't refer themselves
+                          && !(userId == request.resource.data.referredByUserId);
+                          // quid pro quos enabled (only once though so nbd) - bc I can't make this work:
+                          // && (get(/databases/$(database)/documents/users/$(request.resource.data.referredByUserId)).referredByUserId == resource.data.id);
     }
 
   	match /{somePath=**}/portfolioHistory/{portfolioHistoryId} {
       allow read;
     }
 
+    match /{somePath=**}/contract-metrics/{contractId} {
+      allow read;
+    }
+
+    match /{somePath=**}/challenges/{challengeId}{
+      allow read;
+    }
+
+    match /contracts/{contractId}/follows/{userId} {
+      allow read;
+      allow create, delete: if userId == request.auth.uid;
+    }
+
+    match /contracts/{contractId}/challenges/{challengeId}{
+      allow read;
+      allow create: if request.auth.uid == request.resource.data.creatorId;
+      // allow update if there have been no claims yet and if the challenge is still open
+      allow update: if request.auth.uid == resource.data.creatorId;
+    }
+
     match /users/{userId}/follows/{followUserId} {
       allow read;
       allow write: if request.auth.uid == userId;
     }
 
+    match /users/{userId}/likes/{likeId} {
+      allow read;
+      allow write: if request.auth.uid == userId;
+    }
+
     match /{somePath=**}/follows/{followUserId} {
       allow read;
     }
 
     match /private-users/{userId} {
-      allow read: if resource.data.id == request.auth.uid || isAdmin();
-      allow update: if (resource.data.id == request.auth.uid || isAdmin())
+      allow read: if userId == request.auth.uid || isAdmin();
+      allow update: if (userId == request.auth.uid || isAdmin())
                        && request.resource.data.diff(resource.data).affectedKeys()
-                       .hasOnly(['apiKey', 'unsubscribedFromResolutionEmails', 'unsubscribedFromCommentEmails', 'unsubscribedFromAnswerEmails', 'notificationPreferences' ]);
+                         .hasOnly(['apiKey', 'notificationPreferences', 'twitchInfo']);
     }
 
     match /private-users/{userId}/views/{viewId} {
@@ -58,9 +110,9 @@ service cloud.firestore {
     match /contracts/{contractId} {
       allow read;
       allow update: if request.resource.data.diff(resource.data).affectedKeys()
-                                                                 .hasOnly(['tags', 'lowercaseTags']);
+                                                                 .hasOnly(['tags', 'lowercaseTags', 'groupSlugs', 'groupLinks', 'flaggedByUsernames']);
       allow update: if request.resource.data.diff(resource.data).affectedKeys()
-                                                                 .hasOnly(['description', 'closeTime'])
+                                                                 .hasOnly(['description', 'closeTime', 'question', 'visibility', 'unlistedById'])
                        && resource.data.creatorId == request.auth.uid;
       allow update: if isAdmin();
           match /comments/{commentId} {
@@ -104,6 +156,16 @@ service cloud.firestore {
       allow read;
     }
 
+    // Note: `resource` = existing doc, `request.resource` = incoming doc
+    match /manalinks/{slug} {
+      // Anyone can view any manalink
+      allow get;
+      // Only you can create a manalink with your fromId
+      allow create: if request.auth.uid == request.resource.data.fromId;
+      // Only you can list and change your own manalinks
+      allow list, update: if request.auth.uid == resource.data.fromId;
+    }
+
     match /users/{userId}/notifications/{notificationId} {
       allow read;
       allow update: if resource.data.userId == request.auth.uid
@@ -111,24 +173,51 @@ service cloud.firestore {
                                                                     .hasOnly(['isSeen', 'viewTime']);
     }
 
+    match /{somePath=**}/groupMembers/{memberId} {
+      allow read;
+    }
+
+    match /{somePath=**}/groupContracts/{contractId} {
+      allow read;
+    }
+
     match /groups/{groupId} {
       allow read;
-          allow update: if request.auth.uid == resource.data.creatorId
+      allow update: if (request.auth.uid == resource.data.creatorId || isAdmin())
                         && request.resource.data.diff(resource.data)
                         .affectedKeys()
-                           .hasOnly(['name', 'about', 'contractIds', 'memberIds', 'anyoneCanJoin' ]);
-         allow update: if (request.auth.uid in resource.data.memberIds  || resource.data.anyoneCanJoin)
-                           && request.resource.data.diff(resource.data)
-                           .affectedKeys()
-                           .hasOnly([ 'contractIds', 'memberIds' ]);
+                        .hasOnly(['name', 'about', 'anyoneCanJoin', 'aboutPostId', 'pinnedItems' ]);
       allow delete: if request.auth.uid == resource.data.creatorId;
 
-          function isMember() {
-            return request.auth.uid in get(/databases/$(database)/documents/groups/$(groupId)).data.memberIds;
+      match /groupContracts/{contractId} {
+        allow write: if isGroupMember() || request.auth.uid == get(/databases/$(database)/documents/groups/$(groupId)).data.creatorId
       }
+
+      match /groupMembers/{memberId}{
+        allow create: if request.auth.uid == get(/databases/$(database)/documents/groups/$(groupId)).data.creatorId || (request.auth.uid == request.resource.data.userId && get(/databases/$(database)/documents/groups/$(groupId)).data.anyoneCanJoin);
+        allow delete: if request.auth.uid == resource.data.userId;
+      }
+
+      function isGroupMember() {
+        return exists(/databases/$(database)/documents/groups/$(groupId)/groupMembers/$(request.auth.uid));
+      }
+
       match /comments/{commentId} {
         allow read;
-            allow create: if request.auth != null && commentMatchesUser(request.auth.uid, request.resource.data) && isMember();
+        allow create: if request.auth != null && commentMatchesUser(request.auth.uid, request.resource.data) && isGroupMember();
+      }
+    }
+
+      match /posts/{postId} {
+        allow read;
+        allow update: if isAdmin() || request.auth.uid == resource.data.creatorId
+                         && request.resource.data.diff(resource.data)
+                         .affectedKeys()
+                         .hasOnly(['name', 'content']);
+        allow delete: if isAdmin() || request.auth.uid == resource.data.creatorId;
+         match /comments/{commentId} {
+          	allow read;
+            allow create: if request.auth != null && commentMatchesUser(request.auth.uid, request.resource.data) ;
           }
       }
   }

functions/.env.dev

@@ -0,0 +1,3 @@
+# This sets which EnvConfig is deployed to Firebase Cloud Functions
+
+NEXT_PUBLIC_FIREBASE_ENV=DEV

functions/.env.prod

@@ -0,0 +1,3 @@
+# This sets which EnvConfig is deployed to Firebase Cloud Functions
+
+NEXT_PUBLIC_FIREBASE_ENV=PROD

functions/.eslintrc.js

@@ -1,7 +1,7 @@
 module.exports = {
-  plugins: ['lodash'],
+  plugins: ['lodash', 'unused-imports'],
   extends: ['eslint:recommended'],
-  ignorePatterns: ['lib'],
+  ignorePatterns: ['dist', 'lib'],
   env: {
     node: true,
   },
@@ -26,10 +26,12 @@ module.exports = {
             caughtErrorsIgnorePattern: '^_',
           },
         ],
+        'unused-imports/no-unused-imports': 'warn',
       },
     },
   ],
   rules: {
+    'linebreak-style': ['error', 'unix'],
     'lodash/import-scope': [2, 'member'],
   },
 }

functions/.gitignore

@@ -1,10 +1,11 @@
 # Secrets
-.env*
 .runtimeconfig.json
 
+# GCP deployment artifact
+dist/
+
 # Compiled JavaScript files
-lib/**/*.js
-lib/**/*.js.map
+lib/
 
 # TypeScript v1 declaration files
 typings/
@@ -16,4 +17,5 @@ package-lock.json
 ui-debug.log
 firebase-debug.log
 firestore-debug.log
+pubsub-debug.log
 firestore_export/

functions/.yarnrc

@@ -0,0 +1 @@
+save-prefix ""

functions/README.md

@@ -20,11 +20,14 @@ Adapted from https://firebase.google.com/docs/functions/get-started
 3. `$ firebase login` to authenticate the CLI tools to Firebase
 4. `$ firebase use dev` to choose the dev project
 
-### For local development
+#### (Installing) For local development
 
 0. [Install](https://cloud.google.com/sdk/docs/install) gcloud CLI
-1. If you don't have java (or see the error `Error: Process java -version has exited with code 1. Please make sure Java is installed and on your system PATH.`): 0. `$ brew install java`
-   1. `$ sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk`
+1. If you don't have java (or see the error `Error: Process java -version has exited with code 1. Please make sure Java is installed and on your system PATH.`):
+
+   1. `$ brew install java`
+   2. `$ sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk`
+
 2. `$ gcloud auth login` to authenticate the CLI tools to Google Cloud
 3. `$ gcloud config set project <project-id>` to choose the project (`$ gcloud projects list` to see options)
 4. `$ mkdir firestore_export` to create a folder to store the exported database
@@ -32,10 +35,10 @@ Adapted from https://firebase.google.com/docs/functions/get-started
 
 ## Developing locally
 
-0. `$ firebase use dev` if you haven't already
-1. `$ yarn serve` to spin up the emulators 0. The Emulator UI is at http://localhost:4000; the functions are hosted on :5001.
-   Note: You have to kill and restart emulators when you change code; no hot reload =(
-2. `$ yarn dev:emulate` in `/web` to connect to emulators with the frontend 0. Note: emulated database is cleared after every shutdown
+0. `$ ./dev.sh localdb` to start the local emulator and front end
+1. If you change db trigger code, you have to start (doesn't have to complete) the deploy of it to dev to cause a hard emulator code refresh `$ firebase deploy --only functions:dbTriggerNameHere`
+   - There's surely a better way to cause/react to a db trigger update but just adding this here for now as it works
+2. If you want to test a scheduled function replace your function in `test-scheduled-function.ts` and send a GET to `http://localhost:8088/testscheduledfunction` (Best user experience is via [Postman](https://www.postman.com/downloads/)!)
 
 ## Firestore Commands
 
@@ -51,13 +54,17 @@ Adapted from https://firebase.google.com/docs/functions/get-started
 
 ## Deploying
 
-0. `$ firebase use prod` to switch to prod
-1. `$ yarn deploy` to push your changes live!
+0. After merging, you need to manually deploy to backend:
+1. `git checkout main`
+1. `git pull origin main`
+1. `$ firebase use prod` to switch to prod
+1. `$ firebase deploy --only functions` to push your changes live!
    (Future TODO: auto-deploy functions on Git push)
 
 ## Secrets management
 
 Secrets are strings that shouldn't be checked into Git (eg API keys, passwords). We store these using [Google Secret Manager](https://console.cloud.google.com/security/secret-manager), which provides them as environment variables to functions that require them. Some useful workflows:
 
-- Set a secret: `$ firebase functions:secrets:set stripe.test_secret="THE-API-KEY"`
+- Set a secret: `$ firebase functions:secrets:set STRIPE_APIKEY`
+  - Then, enter the secret in the prompt.
 - Read a secret: `$ firebase functions:secrets:access STRIPE_APIKEY`

functions/package.json

@@ -5,35 +5,54 @@
     "firestore": "dev-mantic-markets.appspot.com"
   },
   "scripts": {
-    "build": "tsc",
+    "build": "yarn compile && rm -rf dist && mkdir -p dist/functions && cp -R ../common/lib dist/common && cp -R lib/src dist/functions/src && cp ../yarn.lock dist && cp package.json dist && cp .env.prod dist && cp .env.dev dist",
+    "compile": "tsc -b",
     "watch": "tsc -w",
     "shell": "yarn build && firebase functions:shell",
     "start": "yarn shell",
     "deploy": "firebase deploy --only functions",
     "logs": "firebase functions:log",
-    "serve": "yarn build && firebase emulators:start --only functions,firestore --import=./firestore_export",
-    "db:update-local-from-remote": "yarn db:backup-remote && gsutil rsync -r gs://$npm_package_config_firestore/firestore_export ./firestore_export",
+    "dev": "nodemon src/serve.ts",
+    "localDbScript": "firebase emulators:start --only functions,firestore,pubsub --import=./firestore_export",
+    "serve": "firebase use dev && yarn build && firebase emulators:start --only functions,firestore,pubsub --import=./firestore_export",
+    "db:update-local-from-remote": "yarn db:backup-remote && gsutil -m rsync -r gs://$npm_package_config_firestore/firestore_export ./firestore_export",
     "db:backup-local": "firebase emulators:export --force ./firestore_export",
-    "db:rename-remote-backup-folder": "gsutil mv gs://$npm_package_config_firestore/firestore_export gs://$npm_package_config_firestore/firestore_export_$(date +%d-%m-%Y-%H-%M)",
+    "db:rename-remote-backup-folder": "gsutil -m mv gs://$npm_package_config_firestore/firestore_export gs://$npm_package_config_firestore/firestore_export_$(date +%d-%m-%Y-%H-%M)",
     "db:backup-remote": "yarn db:rename-remote-backup-folder && gcloud firestore export gs://$npm_package_config_firestore/firestore_export/",
-    "verify": "(cd .. && yarn verify)"
+    "verify": "(cd .. && yarn verify)",
+    "verify:dir": "npx eslint . --max-warnings 0; tsc -b -v --pretty"
   },
-  "main": "lib/functions/src/index.js",
+  "main": "functions/src/index.js",
   "dependencies": {
     "@amplitude/node": "1.10.0",
-    "fetch": "1.1.0",
+    "@google-cloud/functions-framework": "3.1.2",
+    "@tiptap/core": "2.0.0-beta.199",
+    "@tiptap/extension-image": "2.0.0-beta.199",
+    "@tiptap/extension-link": "2.0.0-beta.199",
+    "@tiptap/extension-mention": "2.0.0-beta.199",
+    "@tiptap/html": "2.0.0-beta.199",
+    "@tiptap/starter-kit": "2.0.0-beta.199",
+    "@tiptap/suggestion": "2.0.0-beta.199",
+    "cors": "2.8.5",
+    "dayjs": "1.11.4",
+    "express": "4.18.1",
     "firebase-admin": "10.0.0",
     "firebase-functions": "3.21.2",
     "lodash": "4.17.21",
     "mailgun-js": "0.22.0",
+    "marked": "4.1.1",
     "module-alias": "2.2.2",
+    "node-fetch": "2",
     "stripe": "8.194.0",
     "zod": "3.17.2"
   },
   "devDependencies": {
     "@types/mailgun-js": "0.22.12",
+    "@types/marked": "4.0.7",
     "@types/module-alias": "2.0.1",
-    "firebase-functions-test": "0.3.3"
+    "@types/node-fetch": "2.6.2",
+    "firebase-functions-test": "0.3.3",
+    "puppeteer": "18.0.5"
   },
   "private": true
 }

functions/src/accept-challenge.ts

@@ -0,0 +1,170 @@
+import { z } from 'zod'
+import { APIError, newEndpoint, validate } from './api'
+import { log } from './utils'
+import { Contract, CPMMBinaryContract } from '../../common/contract'
+import { User } from '../../common/user'
+import * as admin from 'firebase-admin'
+import { FieldValue } from 'firebase-admin/firestore'
+import { removeUndefinedProps } from '../../common/util/object'
+import { Acceptance, Challenge } from '../../common/challenge'
+import { CandidateBet } from '../../common/new-bet'
+import { createChallengeAcceptedNotification } from './create-notification'
+import { noFees } from '../../common/fees'
+import { formatMoney, formatPercent } from '../../common/util/format'
+import { redeemShares } from './redeem-shares'
+
+const bodySchema = z.object({
+  contractId: z.string(),
+  challengeSlug: z.string(),
+  outcomeType: z.literal('BINARY'),
+  closeTime: z.number().gte(Date.now()),
+})
+const firestore = admin.firestore()
+
+export const acceptchallenge = newEndpoint({}, async (req, auth) => {
+  const { challengeSlug, contractId } = validate(bodySchema, req.body)
+
+  const result = await firestore.runTransaction(async (trans) => {
+    const contractDoc = firestore.doc(`contracts/${contractId}`)
+    const userDoc = firestore.doc(`users/${auth.uid}`)
+    const challengeDoc = firestore.doc(
+      `contracts/${contractId}/challenges/${challengeSlug}`
+    )
+    const [contractSnap, userSnap, challengeSnap] = await trans.getAll(
+      contractDoc,
+      userDoc,
+      challengeDoc
+    )
+    if (!contractSnap.exists) throw new APIError(400, 'Contract not found.')
+    if (!userSnap.exists) throw new APIError(400, 'User not found.')
+    if (!challengeSnap.exists) throw new APIError(400, 'Challenge not found.')
+
+    const anyContract = contractSnap.data() as Contract
+    const user = userSnap.data() as User
+    const challenge = challengeSnap.data() as Challenge
+
+    if (challenge.acceptances.length > 0)
+      throw new APIError(400, 'Challenge already accepted.')
+
+    const creatorDoc = firestore.doc(`users/${challenge.creatorId}`)
+    const creatorSnap = await trans.get(creatorDoc)
+    if (!creatorSnap.exists) throw new APIError(400, 'Creator not found.')
+    const creator = creatorSnap.data() as User
+
+    const {
+      creatorAmount,
+      acceptorOutcome,
+      creatorOutcome,
+      creatorOutcomeProb,
+      acceptorAmount,
+    } = challenge
+
+    if (user.balance < acceptorAmount)
+      throw new APIError(400, 'Insufficient balance.')
+
+    if (creator.balance < creatorAmount)
+      throw new APIError(400, 'Creator has insufficient balance.')
+
+    const contract = anyContract as CPMMBinaryContract
+    const shares = (1 / creatorOutcomeProb) * creatorAmount
+    const createdTime = Date.now()
+    const probOfYes =
+      creatorOutcome === 'YES' ? creatorOutcomeProb : 1 - creatorOutcomeProb
+
+    log(
+      'Creating challenge bet for',
+      user.username,
+      shares,
+      acceptorOutcome,
+      'shares',
+      'at',
+      formatPercent(creatorOutcomeProb),
+      'for',
+      formatMoney(acceptorAmount)
+    )
+
+    const yourNewBet: CandidateBet = removeUndefinedProps({
+      orderAmount: acceptorAmount,
+      amount: acceptorAmount,
+      shares,
+      isCancelled: false,
+      contractId: contract.id,
+      outcome: acceptorOutcome,
+      probBefore: probOfYes,
+      probAfter: probOfYes,
+      loanAmount: 0,
+      createdTime,
+      fees: noFees,
+      challengeSlug: challenge.slug,
+    })
+
+    const yourNewBetDoc = contractDoc.collection('bets').doc()
+    trans.create(yourNewBetDoc, {
+      id: yourNewBetDoc.id,
+      userId: user.id,
+      ...yourNewBet,
+    })
+
+    trans.update(userDoc, { balance: FieldValue.increment(-yourNewBet.amount) })
+
+    const creatorNewBet: CandidateBet = removeUndefinedProps({
+      orderAmount: creatorAmount,
+      amount: creatorAmount,
+      shares,
+      isCancelled: false,
+      contractId: contract.id,
+      outcome: creatorOutcome,
+      probBefore: probOfYes,
+      probAfter: probOfYes,
+      loanAmount: 0,
+      createdTime,
+      fees: noFees,
+      challengeSlug: challenge.slug,
+    })
+    const creatorBetDoc = contractDoc.collection('bets').doc()
+    trans.create(creatorBetDoc, {
+      id: creatorBetDoc.id,
+      userId: creator.id,
+      ...creatorNewBet,
+    })
+
+    trans.update(creatorDoc, {
+      balance: FieldValue.increment(-creatorNewBet.amount),
+    })
+
+    const volume = contract.volume + yourNewBet.amount + creatorNewBet.amount
+    trans.update(contractDoc, { volume })
+
+    trans.update(
+      challengeDoc,
+      removeUndefinedProps({
+        acceptedByUserIds: [user.id],
+        acceptances: [
+          {
+            userId: user.id,
+            betId: yourNewBetDoc.id,
+            createdTime,
+            amount: acceptorAmount,
+            userUsername: user.username,
+            userName: user.name,
+            userAvatarUrl: user.avatarUrl,
+          } as Acceptance,
+        ],
+      })
+    )
+
+    await createChallengeAcceptedNotification(
+      user,
+      creator,
+      challenge,
+      acceptorAmount,
+      contract
+    )
+    log('Done, sent notification.')
+    return yourNewBetDoc
+  })
+
+  await redeemShares(auth.uid, contractId)
+
+  return { betId: result.id }
+})

functions/src/add-liquidity.ts

@@ -1,104 +0,0 @@
-import * as functions from 'firebase-functions'
-import * as admin from 'firebase-admin'
-
-import { Contract } from '../../common/contract'
-import { User } from '../../common/user'
-import { removeUndefinedProps } from '../../common/util/object'
-import { redeemShares } from './redeem-shares'
-import { getNewLiquidityProvision } from '../../common/add-liquidity'
-
-export const addLiquidity = functions.runWith({ minInstances: 1 }).https.onCall(
-  async (
-    data: {
-      amount: number
-      contractId: string
-    },
-    context
-  ) => {
-    const userId = context?.auth?.uid
-    if (!userId) return { status: 'error', message: 'Not authorized' }
-
-    const { amount, contractId } = data
-
-    if (amount <= 0 || isNaN(amount) || !isFinite(amount))
-      return { status: 'error', message: 'Invalid amount' }
-
-    // run as transaction to prevent race conditions
-    return await firestore
-      .runTransaction(async (transaction) => {
-        const userDoc = firestore.doc(`users/${userId}`)
-        const userSnap = await transaction.get(userDoc)
-        if (!userSnap.exists)
-          return { status: 'error', message: 'User not found' }
-        const user = userSnap.data() as User
-
-        const contractDoc = firestore.doc(`contracts/${contractId}`)
-        const contractSnap = await transaction.get(contractDoc)
-        if (!contractSnap.exists)
-          return { status: 'error', message: 'Invalid contract' }
-        const contract = contractSnap.data() as Contract
-        if (
-          contract.mechanism !== 'cpmm-1' ||
-          contract.outcomeType !== 'BINARY'
-        )
-          return { status: 'error', message: 'Invalid contract' }
-
-        const { closeTime } = contract
-        if (closeTime && Date.now() > closeTime)
-          return { status: 'error', message: 'Trading is closed' }
-
-        if (user.balance < amount)
-          return { status: 'error', message: 'Insufficient balance' }
-
-        const newLiquidityProvisionDoc = firestore
-          .collection(`contracts/${contractId}/liquidity`)
-          .doc()
-
-        const { newLiquidityProvision, newPool, newP, newTotalLiquidity } =
-          getNewLiquidityProvision(
-            user,
-            amount,
-            contract,
-            newLiquidityProvisionDoc.id
-          )
-
-        if (newP !== undefined && !isFinite(newP)) {
-          return {
-            status: 'error',
-            message: 'Liquidity injection rejected due to overflow error.',
-          }
-        }
-
-        transaction.update(
-          contractDoc,
-          removeUndefinedProps({
-            pool: newPool,
-            p: newP,
-            totalLiquidity: newTotalLiquidity,
-          })
-        )
-
-        const newBalance = user.balance - amount
-        const newTotalDeposits = user.totalDeposits - amount
-
-        if (!isFinite(newBalance)) {
-          throw new Error('Invalid user balance for ' + user.username)
-        }
-
-        transaction.update(userDoc, {
-          balance: newBalance,
-          totalDeposits: newTotalDeposits,
-        })
-
-        transaction.create(newLiquidityProvisionDoc, newLiquidityProvision)
-
-        return { status: 'success', newLiquidityProvision }
-      })
-      .then(async (result) => {
-        await redeemShares(userId, contractId)
-        return result
-      })
-  }
-)
-
-const firestore = admin.firestore()

functions/src/add-subsidy.ts

@@ -0,0 +1,78 @@
+import * as admin from 'firebase-admin'
+import { z } from 'zod'
+
+import { Contract, CPMMContract } from '../../common/contract'
+import { User } from '../../common/user'
+import { getNewLiquidityProvision } from '../../common/add-liquidity'
+import { APIError, newEndpoint, validate } from './api'
+
+const bodySchema = z.object({
+  contractId: z.string(),
+  amount: z.number().gt(0),
+})
+
+export const addsubsidy = newEndpoint({}, async (req, auth) => {
+  const { amount, contractId } = validate(bodySchema, req.body)
+
+  if (!isFinite(amount) || amount < 1) throw new APIError(400, 'Invalid amount')
+
+  // run as transaction to prevent race conditions
+  return await firestore.runTransaction(async (transaction) => {
+    const userDoc = firestore.doc(`users/${auth.uid}`)
+    const userSnap = await transaction.get(userDoc)
+    if (!userSnap.exists) throw new APIError(400, 'User not found')
+    const user = userSnap.data() as User
+
+    const contractDoc = firestore.doc(`contracts/${contractId}`)
+    const contractSnap = await transaction.get(contractDoc)
+    if (!contractSnap.exists) throw new APIError(400, 'Invalid contract')
+    const contract = contractSnap.data() as Contract
+    if (
+      contract.mechanism !== 'cpmm-1' ||
+      (contract.outcomeType !== 'BINARY' &&
+        contract.outcomeType !== 'PSEUDO_NUMERIC')
+    )
+      throw new APIError(400, 'Invalid contract')
+
+    const { closeTime } = contract
+    if (closeTime && Date.now() > closeTime)
+      throw new APIError(400, 'Trading is closed')
+
+    if (user.balance < amount) throw new APIError(400, 'Insufficient balance')
+
+    const newLiquidityProvisionDoc = firestore
+      .collection(`contracts/${contractId}/liquidity`)
+      .doc()
+
+    const { newLiquidityProvision, newTotalLiquidity, newSubsidyPool } =
+      getNewLiquidityProvision(
+        user.id,
+        amount,
+        contract,
+        newLiquidityProvisionDoc.id
+      )
+
+    transaction.update(contractDoc, {
+      subsidyPool: newSubsidyPool,
+      totalLiquidity: newTotalLiquidity,
+    } as Partial<CPMMContract>)
+
+    const newBalance = user.balance - amount
+    const newTotalDeposits = user.totalDeposits - amount
+
+    if (!isFinite(newBalance)) {
+      throw new APIError(500, 'Invalid user balance for ' + user.username)
+    }
+
+    transaction.update(userDoc, {
+      balance: newBalance,
+      totalDeposits: newTotalDeposits,
+    })
+
+    transaction.create(newLiquidityProvisionDoc, newLiquidityProvision)
+
+    return newLiquidityProvision
+  })
+})
+
+const firestore = admin.firestore()

functions/src/analytics.ts

@@ -3,7 +3,7 @@ import * as Amplitude from '@amplitude/node'
 import { DEV_CONFIG } from '../../common/envs/dev'
 import { PROD_CONFIG } from '../../common/envs/prod'
 
-import { isProd } from './utils'
+import { isProd, tryOrLogError } from './utils'
 
 const key = isProd() ? PROD_CONFIG.amplitudeApiKey : DEV_CONFIG.amplitudeApiKey
 
@@ -15,10 +15,12 @@ export const track = async (
   eventProperties?: any,
   amplitudeProperties?: Partial<Amplitude.Event>
 ) => {
-  await amp.logEvent({
+  return await tryOrLogError(
+    amp.logEvent({
       event_type: eventName,
       user_id: userId,
       event_properties: eventProperties,
       ...amplitudeProperties,
     })
+  )
 }

functions/src/api.ts

@@ -1,17 +1,20 @@
 import * as admin from 'firebase-admin'
-import { logger } from 'firebase-functions/v2'
-import { HttpsOptions, onRequest, Request } from 'firebase-functions/v2/https'
+import { Request, RequestHandler, Response } from 'express'
+import { error } from 'firebase-functions/logger'
+import { HttpsOptions } from 'firebase-functions/v2/https'
 import { log } from './utils'
 import { z } from 'zod'
-
+import { APIError } from '../../common/api'
 import { PrivateUser } from '../../common/user'
 import {
   CORS_ORIGIN_MANIFOLD,
   CORS_ORIGIN_LOCALHOST,
+  CORS_ORIGIN_VERCEL,
 } from '../../common/envs/constants'
+export { APIError } from '../../common/api'
 
 type Output = Record<string, unknown>
-type AuthedUser = {
+export type AuthedUser = {
   uid: string
   creds: JwtCredentials | (KeyCredentials & { privateUser: PrivateUser })
 }
@@ -20,24 +23,8 @@ type JwtCredentials = { kind: 'jwt'; data: admin.auth.DecodedIdToken }
 type KeyCredentials = { kind: 'key'; data: string }
 type Credentials = JwtCredentials | KeyCredentials
 
-export class APIError {
-  code: number
-  msg: string
-  details: unknown
-  constructor(code: number, msg: string, details?: unknown) {
-    this.code = code
-    this.msg = msg
-    this.details = details
-  }
-}
-
-const auth = admin.auth()
-const firestore = admin.firestore()
-const privateUsers = firestore.collection(
-  'private-users'
-) as admin.firestore.CollectionReference<PrivateUser>
-
 export const parseCredentials = async (req: Request): Promise<Credentials> => {
+  const auth = admin.auth()
   const authHeader = req.get('Authorization')
   if (!authHeader) {
     throw new APIError(403, 'Missing Authorization header.')
@@ -54,7 +41,7 @@ export const parseCredentials = async (req: Request): Promise<Credentials> => {
         return { kind: 'jwt', data: await auth.verifyIdToken(payload) }
       } catch (err) {
         // This is somewhat suspicious, so get it into the firebase console
-        logger.error('Error verifying Firebase JWT: ', err)
+        error('Error verifying Firebase JWT: ', err)
         throw new APIError(403, 'Error validating token.')
       }
     case 'Key':
@@ -65,6 +52,8 @@ export const parseCredentials = async (req: Request): Promise<Credentials> => {
 }
 
 export const lookupUser = async (creds: Credentials): Promise<AuthedUser> => {
+  const firestore = admin.firestore()
+  const privateUsers = firestore.collection('private-users')
   switch (creds.kind) {
     case 'jwt': {
       if (typeof creds.data.user_id !== 'string') {
@@ -78,7 +67,7 @@ export const lookupUser = async (creds: Credentials): Promise<AuthedUser> => {
       if (privateUserQ.empty) {
         throw new APIError(403, `No private user exists with API key ${key}.`)
       }
-      const privateUser = privateUserQ.docs[0].data()
+      const privateUser = privateUserQ.docs[0].data() as PrivateUser
       return { uid: privateUser.id, creds: { privateUser, ...creds } }
     }
     default:
@@ -86,12 +75,30 @@ export const lookupUser = async (creds: Credentials): Promise<AuthedUser> => {
   }
 }
 
+export const writeResponseError = (e: unknown, res: Response) => {
+  if (e instanceof APIError) {
+    const output: { [k: string]: unknown } = { message: e.message }
+    if (e.details != null) {
+      output.details = e.details
+    }
+    res.status(e.code).json(output)
+  } else {
+    error(e)
+    res.status(500).json({ message: 'An unknown error occurred.' })
+  }
+}
+
 export const zTimestamp = () => {
   return z.preprocess((arg) => {
     return typeof arg == 'number' ? new Date(arg) : undefined
   }, z.date())
 }
 
+export type EndpointDefinition = {
+  opts: EndpointOptions & { method: string }
+  handler: RequestHandler
+}
+
 export const validate = <T extends z.ZodTypeAny>(schema: T, val: unknown) => {
   const result = schema.safeParse(val)
   if (!result.success) {
@@ -108,32 +115,55 @@ export const validate = <T extends z.ZodTypeAny>(schema: T, val: unknown) => {
   }
 }
 
-const DEFAULT_OPTS: HttpsOptions = {
-  minInstances: 1,
-  cors: [CORS_ORIGIN_MANIFOLD, CORS_ORIGIN_LOCALHOST],
+export interface EndpointOptions extends HttpsOptions {
+  method?: string
 }
 
-export const newEndpoint = (methods: [string], fn: Handler) =>
-  onRequest(DEFAULT_OPTS, async (req, res) => {
-    log('Request processing started.')
+const DEFAULT_OPTS = {
+  method: 'POST',
+  minInstances: 1,
+  concurrency: 100,
+  memory: '2GiB',
+  cpu: 1,
+  cors: [CORS_ORIGIN_MANIFOLD, CORS_ORIGIN_VERCEL, CORS_ORIGIN_LOCALHOST],
+}
+
+export const newEndpoint = (endpointOpts: EndpointOptions, fn: Handler) => {
+  const opts = Object.assign({}, DEFAULT_OPTS, endpointOpts)
+  return {
+    opts,
+    handler: async (req: Request, res: Response) => {
+      log(`${req.method} ${req.url} ${JSON.stringify(req.body)}`)
       try {
-      if (!methods.includes(req.method)) {
-        const allowed = methods.join(', ')
-        throw new APIError(405, `This endpoint supports only ${allowed}.`)
+        if (opts.method !== req.method) {
+          throw new APIError(405, `This endpoint supports only ${opts.method}.`)
         }
         const authedUser = await lookupUser(await parseCredentials(req))
-      log('User credentials processed.')
         res.status(200).json(await fn(req, authedUser))
       } catch (e) {
-      if (e instanceof APIError) {
-        const output: { [k: string]: unknown } = { message: e.msg }
-        if (e.details != null) {
-          output.details = e.details
+        writeResponseError(e, res)
       }
-        res.status(e.code).json(output)
-      } else {
-        logger.error(e)
-        res.status(500).json({ message: 'An unknown error occurred.' })
+    },
+  } as EndpointDefinition
 }
+
+export const newEndpointNoAuth = (
+  endpointOpts: EndpointOptions,
+  fn: (req: Request) => Promise<Output>
+) => {
+  const opts = Object.assign({}, DEFAULT_OPTS, endpointOpts)
+  return {
+    opts,
+    handler: async (req: Request, res: Response) => {
+      log(`${req.method} ${req.url} ${JSON.stringify(req.body)}`)
+      try {
+        if (opts.method !== req.method) {
+          throw new APIError(405, `This endpoint supports only ${opts.method}.`)
+        }
+        res.status(200).json(await fn(req))
+      } catch (e) {
+        writeResponseError(e, res)
+      }
+    },
+  } as EndpointDefinition
 }
-  })

functions/src/backup-db.ts

@@ -18,46 +18,63 @@
 
 import * as functions from 'firebase-functions'
 import * as firestore from '@google-cloud/firestore'
-const client = new firestore.v1.FirestoreAdminClient()
+import { FirestoreAdminClient } from '@google-cloud/firestore/types/v1/firestore_admin_client'
 
-const bucket = 'gs://manifold-firestore-backup'
-
-export const backupDb = functions.pubsub
-  .schedule('every 24 hours')
-  .onRun((_context) => {
-    const projectId = process.env.GCP_PROJECT || process.env.GCLOUD_PROJECT
-    if (projectId == null) {
-      throw new Error('No project ID environment variable set.')
-    }
-    const databaseName = client.databasePath(projectId, '(default)')
-
-    return client
-      .exportDocuments({
-        name: databaseName,
-        outputUriPrefix: bucket,
+export const backupDbCore = async (
+  client: FirestoreAdminClient,
+  project: string,
+  bucket: string
+) => {
+  const name = client.databasePath(project, '(default)')
+  const outputUriPrefix = `gs://${bucket}`
   // Leave collectionIds empty to export all collections
   // or set to a list of collection IDs to export,
   // collectionIds: ['users', 'posts']
   // NOTE: Subcollections are not backed up by default
-        collectionIds: [
+  const collectionIds = [
     'contracts',
     'groups',
     'private-users',
     'stripe-transactions',
+    'transactions',
     'users',
     'bets',
     'comments',
+    'follows',
     'followers',
     'answers',
     'txns',
-        ],
-      })
-      .then((responses) => {
+    'manalinks',
+    'liquidity',
+    'stats',
+    'cache',
+    'latency',
+    'views',
+    'notifications',
+    'portfolioHistory',
+    'folds',
+  ]
+  return await client.exportDocuments({ name, outputUriPrefix, collectionIds })
+}
+
+export const backupDb = functions.pubsub
+  .schedule('every 24 hours')
+  .onRun(async (_context) => {
+    try {
+      const client = new firestore.v1.FirestoreAdminClient()
+      const project = process.env.GCP_PROJECT || process.env.GCLOUD_PROJECT
+      if (project == null) {
+        throw new Error('No project ID environment variable set.')
+      }
+      const responses = await backupDbCore(
+        client,
+        project,
+        'manifold-firestore-backup'
+      )
       const response = responses[0]
       console.log(`Operation Name: ${response['name']}`)
-      })
-      .catch((err) => {
+    } catch (err) {
       console.error(err)
       throw new Error('Export operation failed')
-      })
+    }
   })

functions/src/call-cloud-function.ts

@@ -1,17 +0,0 @@
-import * as admin from 'firebase-admin'
-
-import fetch from './fetch'
-
-export const callCloudFunction = (functionName: string, data: unknown = {}) => {
-  const projectId = admin.instanceId().app.options.projectId
-
-  const url = `https://us-central1-${projectId}.cloudfunctions.net/${functionName}`
-
-  return fetch(url, {
-    method: 'POST',
-    headers: {
-      'Content-Type': 'application/json',
-    },
-    body: JSON.stringify({ data }),
-  }).then((response) => response.json())
-}

functions/src/cancel-bet.ts

@@ -0,0 +1,33 @@
+import * as admin from 'firebase-admin'
+import { z } from 'zod'
+import { APIError, newEndpoint, validate } from './api'
+import { LimitBet } from '../../common/bet'
+
+const bodySchema = z.object({
+  betId: z.string(),
+})
+
+export const cancelbet = newEndpoint({}, async (req, auth) => {
+  const { betId } = validate(bodySchema, req.body)
+
+  return await firestore.runTransaction(async (trans) => {
+    const snap = await trans.get(
+      firestore.collectionGroup('bets').where('id', '==', betId)
+    )
+    const betDoc = snap.docs[0]
+    if (!betDoc?.exists) throw new APIError(400, 'Bet not found.')
+
+    const bet = betDoc.data() as LimitBet
+    if (bet.userId !== auth.uid)
+      throw new APIError(400, 'Not authorized to cancel bet.')
+    if (bet.limitProb === undefined)
+      throw new APIError(400, 'Not a limit order: Cannot cancel.')
+    if (bet.isCancelled) throw new APIError(400, 'Bet already cancelled.')
+
+    trans.update(betDoc.ref, { isCancelled: true })
+
+    return { ...bet, isCancelled: true }
+  })
+})
+
+const firestore = admin.firestore()

functions/src/change-user-info.ts

@@ -1,7 +1,8 @@
-import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
+import { z } from 'zod'
 
 import { getUser } from './utils'
+import { Bet } from '../../common/bet'
 import { Contract } from '../../common/contract'
 import { Comment } from '../../common/comment'
 import { User } from '../../common/user'
@@ -11,37 +12,23 @@ import {
 } from '../../common/util/clean-username'
 import { removeUndefinedProps } from '../../common/util/object'
 import { Answer } from '../../common/answer'
+import { APIError, newEndpoint, validate } from './api'
 
-export const changeUserInfo = functions
-  .runWith({ minInstances: 1 })
-  .https.onCall(
-    async (
-      data: {
-        username?: string
-        name?: string
-        avatarUrl?: string
-      },
-      context
-    ) => {
-      const userId = context?.auth?.uid
-      if (!userId) return { status: 'error', message: 'Not authorized' }
-
-      const user = await getUser(userId)
-      if (!user) return { status: 'error', message: 'User not found' }
-
-      const { username, name, avatarUrl } = data
-
-      return await changeUser(user, { username, name, avatarUrl })
-        .then(() => {
-          console.log('succesfully changed', user.username, 'to', data)
-          return { status: 'success' }
+const bodySchema = z.object({
+  username: z.string().optional(),
+  name: z.string().optional(),
+  avatarUrl: z.string().optional(),
 })
-        .catch((e) => {
-          console.log('Error', e.message)
-          return { status: 'error', message: e.message }
+
+export const changeuserinfo = newEndpoint({}, async (req, auth) => {
+  const { username, name, avatarUrl } = validate(bodySchema, req.body)
+
+  const user = await getUser(auth.uid)
+  if (!user) throw new APIError(400, 'User not found')
+
+  await changeUser(user, { username, name, avatarUrl })
+  return { message: 'Successfully changed user info.' }
 })
-    }
-  )
 
 export const changeUser = async (
   user: User,
@@ -51,18 +38,68 @@ export const changeUser = async (
     avatarUrl?: string
   }
 ) => {
+  // Update contracts, comments, and answers outside of a transaction to avoid contention.
+  // Using bulkWriter to supports >500 writes at a time
+  const contractsRef = firestore
+    .collection('contracts')
+    .where('creatorId', '==', user.id)
+
+  const contracts = await contractsRef.get()
+
+  const contractUpdate: Partial<Contract> = removeUndefinedProps({
+    creatorName: update.name,
+    creatorUsername: update.username,
+    creatorAvatarUrl: update.avatarUrl,
+  })
+
+  const commentSnap = await firestore
+    .collectionGroup('comments')
+    .where('userUsername', '==', user.username)
+    .get()
+
+  const commentUpdate: Partial<Comment> = removeUndefinedProps({
+    userName: update.name,
+    userUsername: update.username,
+    userAvatarUrl: update.avatarUrl,
+  })
+
+  const answerSnap = await firestore
+    .collectionGroup('answers')
+    .where('username', '==', user.username)
+    .get()
+  const answerUpdate: Partial<Answer> = removeUndefinedProps(update)
+
+  const betsSnap = await firestore
+    .collectionGroup('bets')
+    .where('userId', '==', user.id)
+    .get()
+  const betsUpdate: Partial<Bet> = removeUndefinedProps({
+    userName: update.name,
+    userUsername: update.username,
+    userAvatarUrl: update.avatarUrl,
+  })
+
+  const bulkWriter = firestore.bulkWriter()
+  commentSnap.docs.forEach((d) => bulkWriter.update(d.ref, commentUpdate))
+  answerSnap.docs.forEach((d) => bulkWriter.update(d.ref, answerUpdate))
+  contracts.docs.forEach((d) => bulkWriter.update(d.ref, contractUpdate))
+  betsSnap.docs.forEach((d) => bulkWriter.update(d.ref, betsUpdate))
+  await bulkWriter.flush()
+  console.log('Done writing!')
+
+  // Update the username inside a transaction
   return await firestore.runTransaction(async (transaction) => {
     if (update.username) {
       update.username = cleanUsername(update.username)
       if (!update.username) {
-        throw new Error('Invalid username')
+        throw new APIError(400, 'Invalid username')
       }
 
       const sameNameUser = await transaction.get(
         firestore.collection('users').where('username', '==', update.username)
       )
       if (!sameNameUser.empty) {
-        throw new Error('Username already exists')
+        throw new APIError(400, 'Username already exists')
       }
     }
 
@@ -72,49 +109,7 @@ export const changeUser = async (
 
     const userRef = firestore.collection('users').doc(user.id)
     const userUpdate: Partial<User> = removeUndefinedProps(update)
-
-    const contractsRef = firestore
-      .collection('contracts')
-      .where('creatorId', '==', user.id)
-
-    const contracts = await transaction.get(contractsRef)
-
-    const contractUpdate: Partial<Contract> = removeUndefinedProps({
-      creatorName: update.name,
-      creatorUsername: update.username,
-      creatorAvatarUrl: update.avatarUrl,
-    })
-
-    const commentSnap = await transaction.get(
-      firestore
-        .collectionGroup('comments')
-        .where('userUsername', '==', user.username)
-    )
-
-    const commentUpdate: Partial<Comment> = removeUndefinedProps({
-      userName: update.name,
-      userUsername: update.username,
-      userAvatarUrl: update.avatarUrl,
-    })
-
-    const answerSnap = await transaction.get(
-      firestore
-        .collectionGroup('answers')
-        .where('username', '==', user.username)
-    )
-    const answerUpdate: Partial<Answer> = removeUndefinedProps(update)
-
-    await transaction.update(userRef, userUpdate)
-
-    await Promise.all(
-      commentSnap.docs.map((d) => transaction.update(d.ref, commentUpdate))
-    )
-
-    await Promise.all(
-      answerSnap.docs.map((d) => transaction.update(d.ref, answerUpdate))
-    )
-
-    await contracts.docs.map((d) => transaction.update(d.ref, contractUpdate))
+    transaction.update(userRef, userUpdate)
   })
 }
 

functions/src/claim-manalink.ts

@@ -0,0 +1,107 @@
+import * as admin from 'firebase-admin'
+import { z } from 'zod'
+
+import { User } from 'common/user'
+import { Manalink } from 'common/manalink'
+import { runTxn, TxnData } from './transact'
+import { APIError, newEndpoint, validate } from './api'
+
+const bodySchema = z.object({
+  slug: z.string(),
+})
+
+export const claimmanalink = newEndpoint({}, async (req, auth) => {
+  const { slug } = validate(bodySchema, req.body)
+
+  // Run as transaction to prevent race conditions.
+  return await firestore.runTransaction(async (transaction) => {
+    // Look up the manalink
+    const manalinkDoc = firestore.doc(`manalinks/${slug}`)
+    const manalinkSnap = await transaction.get(manalinkDoc)
+    if (!manalinkSnap.exists) {
+      throw new APIError(400, 'Manalink not found')
+    }
+    const manalink = manalinkSnap.data() as Manalink
+
+    const { amount, fromId, claimedUserIds } = manalink
+
+    if (amount <= 0 || isNaN(amount) || !isFinite(amount))
+      throw new APIError(500, 'Invalid amount')
+
+    if (auth.uid === fromId)
+      throw new APIError(400, `You can't claim your own manalink`)
+
+    const fromDoc = firestore.doc(`users/${fromId}`)
+    const fromSnap = await transaction.get(fromDoc)
+    if (!fromSnap.exists) {
+      throw new APIError(500, `User ${fromId} not found`)
+    }
+    const fromUser = fromSnap.data() as User
+
+    // Only permit one redemption per user per link
+    if (claimedUserIds.includes(auth.uid)) {
+      throw new APIError(400, `You already redeemed manalink ${slug}`)
+    }
+
+    // Disallow expired or maxed out links
+    if (manalink.expiresTime != null && manalink.expiresTime < Date.now()) {
+      throw new APIError(
+        400,
+        `Manalink ${slug} expired on ${new Date(
+          manalink.expiresTime
+        ).toLocaleString()}`
+      )
+    }
+    if (
+      manalink.maxUses != null &&
+      manalink.maxUses <= manalink.claims.length
+    ) {
+      throw new APIError(
+        400,
+        `Manalink ${slug} has reached its max uses of ${manalink.maxUses}`
+      )
+    }
+
+    if (fromUser.balance < amount) {
+      throw new APIError(
+        400,
+        `Insufficient balance: ${fromUser.name} needed ${amount} for this manalink but only had ${fromUser.balance} `
+      )
+    }
+
+    // Actually execute the txn
+    const data: TxnData = {
+      fromId,
+      fromType: 'USER',
+      toId: auth.uid,
+      toType: 'USER',
+      amount,
+      token: 'M$',
+      category: 'MANALINK',
+      description: `Manalink ${slug} claimed: ${amount} from ${fromUser.username} to ${auth.uid}`,
+    }
+    const result = await runTxn(transaction, data)
+    const txnId = result.txn?.id
+    if (!txnId) {
+      throw new APIError(
+        500,
+        result.message ?? 'An error occurred posting the transaction.'
+      )
+    }
+
+    // Update the manalink object with this info
+    const claim = {
+      toId: auth.uid,
+      txnId,
+      claimedTime: Date.now(),
+    }
+    transaction.update(manalinkDoc, {
+      claimedUserIds: [...claimedUserIds, auth.uid],
+      claims: [...manalink.claims, claim],
+    })
+
+    return { message: 'Manalink claimed' }
+  })
+})
+
+const firestore = admin.firestore()

functions/src/close-market.ts

@@ -0,0 +1,58 @@
+import * as admin from 'firebase-admin'
+import { z } from 'zod'
+
+import { Contract } from '../../common/contract'
+import { getUser } from './utils'
+
+import { isAdmin, isManifoldId } from '../../common/envs/constants'
+import { APIError, newEndpoint, validate } from './api'
+
+const bodySchema = z.object({
+  contractId: z.string(),
+  closeTime: z.number().int().nonnegative().optional(),
+})
+
+export const closemarket = newEndpoint({}, async (req, auth) => {
+  const { contractId, closeTime } = validate(bodySchema, req.body)
+  const contractDoc = firestore.doc(`contracts/${contractId}`)
+  const contractSnap = await contractDoc.get()
+  if (!contractSnap.exists)
+    throw new APIError(404, 'No contract exists with the provided ID')
+  const contract = contractSnap.data() as Contract
+  const { creatorId } = contract
+  const firebaseUser = await admin.auth().getUser(auth.uid)
+
+  if (
+    creatorId !== auth.uid &&
+    !isManifoldId(auth.uid) &&
+    !isAdmin(firebaseUser.email)
+  )
+    throw new APIError(403, 'User is not creator of contract')
+
+  const now = Date.now()
+  if (!closeTime && contract.closeTime && contract.closeTime < now)
+    throw new APIError(400, 'Contract already closed')
+
+  if (closeTime && closeTime < now)
+    throw new APIError(
+      400,
+      'Close time must be in the future. ' +
+        'Alternatively, do not provide a close time to close immediately.'
+    )
+
+  const creator = await getUser(creatorId)
+  if (!creator) throw new APIError(500, 'Creator not found')
+
+  const updatedContract = {
+    ...contract,
+    closeTime: closeTime ? closeTime : now,
+  }
+
+  await contractDoc.update(updatedContract)
+
+  console.log('contract ', contractId, 'closed')
+
+  return updatedContract
+})
+
+const firestore = admin.firestore()

functions/src/create-answer.ts

@@ -1,61 +1,47 @@
-import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
+import { z } from 'zod'
 
 import { Contract } from '../../common/contract'
 import { User } from '../../common/user'
 import { getNewMultiBetInfo } from '../../common/new-bet'
 import { Answer, MAX_ANSWER_LENGTH } from '../../common/answer'
-import { getContract, getValues } from './utils'
-import { sendNewAnswerEmail } from './emails'
+import { getValues } from './utils'
+import { APIError, newEndpoint, validate } from './api'
+import { addUserToContractFollowers } from './follow-market'
 
-export const createAnswer = functions
-  .runWith({ minInstances: 1, secrets: ['MAILGUN_KEY'] })
-  .https.onCall(
-    async (
-      data: {
-        contractId: string
-        amount: number
-        text: string
-      },
-      context
-    ) => {
-      const userId = context?.auth?.uid
-      if (!userId) return { status: 'error', message: 'Not authorized' }
+const bodySchema = z.object({
+  contractId: z.string().max(MAX_ANSWER_LENGTH),
+  amount: z.number().gt(0),
+  text: z.string(),
+})
 
-      const { contractId, amount, text } = data
+const opts = { secrets: ['MAILGUN_KEY'] }
 
-      if (amount <= 0 || isNaN(amount) || !isFinite(amount))
-        return { status: 'error', message: 'Invalid amount' }
+export const createanswer = newEndpoint(opts, async (req, auth) => {
+  const { contractId, amount, text } = validate(bodySchema, req.body)
 
-      if (!text || typeof text !== 'string' || text.length > MAX_ANSWER_LENGTH)
-        return { status: 'error', message: 'Invalid text' }
+  if (!isFinite(amount)) throw new APIError(400, 'Invalid amount')
 
   // Run as transaction to prevent race conditions.
-      const result = await firestore.runTransaction(async (transaction) => {
-        const userDoc = firestore.doc(`users/${userId}`)
+  const answer = await firestore.runTransaction(async (transaction) => {
+    const userDoc = firestore.doc(`users/${auth.uid}`)
     const userSnap = await transaction.get(userDoc)
-        if (!userSnap.exists)
-          return { status: 'error', message: 'User not found' }
+    if (!userSnap.exists) throw new APIError(400, 'User not found')
     const user = userSnap.data() as User
 
-        if (user.balance < amount)
-          return { status: 'error', message: 'Insufficient balance' }
+    if (user.balance < amount) throw new APIError(400, 'Insufficient balance')
 
     const contractDoc = firestore.doc(`contracts/${contractId}`)
     const contractSnap = await transaction.get(contractDoc)
-        if (!contractSnap.exists)
-          return { status: 'error', message: 'Invalid contract' }
+    if (!contractSnap.exists) throw new APIError(400, 'Invalid contract')
     const contract = contractSnap.data() as Contract
 
     if (contract.outcomeType !== 'FREE_RESPONSE')
-          return {
-            status: 'error',
-            message: 'Requires a free response contract',
-          }
+      throw new APIError(400, 'Requires a free response contract')
 
     const { closeTime, volume } = contract
     if (closeTime && Date.now() > closeTime)
-          return { status: 'error', message: 'Trading is closed' }
+      throw new APIError(400, 'Trading is closed')
 
     const [lastAnswer] = await getValues<Answer>(
       firestore
@@ -64,8 +50,7 @@ export const createAnswer = functions
         .limit(1)
     )
 
-        if (!lastAnswer)
-          return { status: 'error', message: 'Could not fetch last answer' }
+    if (!lastAnswer) throw new APIError(500, 'Could not fetch last answer')
 
     const number = lastAnswer.number + 1
     const id = `${number}`
@@ -90,15 +75,11 @@ export const createAnswer = functions
     }
     transaction.create(newAnswerDoc, answer)
 
-        const loanAmount = 0
-
     const { newBet, newPool, newTotalShares, newTotalBets } =
-          getNewMultiBetInfo(answerId, amount, contract, loanAmount)
+      getNewMultiBetInfo(answerId, amount, contract)
 
     const newBalance = user.balance - amount
-        const betDoc = firestore
-          .collection(`contracts/${contractId}/bets`)
-          .doc()
+    const betDoc = firestore.collection(`contracts/${contractId}/bets`).doc()
     transaction.create(betDoc, {
       id: betDoc.id,
       userId: user.id,
@@ -113,16 +94,12 @@ export const createAnswer = functions
       volume: volume + amount,
     })
 
-        return { status: 'success', answerId, betId: betDoc.id, answer }
+    return answer
   })
 
-      const { answer } = result
-      const contract = await getContract(contractId)
+  await addUserToContractFollowers(contractId, auth.uid)
 
-      if (answer && contract) await sendNewAnswerEmail(answer, contract)
-
-      return result
-    }
-  )
+  return answer
+})
 
 const firestore = admin.firestore()

functions/src/create-comment.ts

@@ -0,0 +1,105 @@
+import * as admin from 'firebase-admin'
+
+import { getContract, getUser, log } from './utils'
+import { APIError, newEndpoint, validate } from './api'
+import { JSONContent } from '@tiptap/core'
+import { z } from 'zod'
+import { removeUndefinedProps } from '../../common/util/object'
+import { htmlToRichText } from '../../common/util/parse'
+import { marked } from 'marked'
+
+const contentSchema: z.ZodType<JSONContent> = z.lazy(() =>
+  z.intersection(
+    z.record(z.any()),
+    z.object({
+      type: z.string().optional(),
+      attrs: z.record(z.any()).optional(),
+      content: z.array(contentSchema).optional(),
+      marks: z
+        .array(
+          z.intersection(
+            z.record(z.any()),
+            z.object({
+              type: z.string(),
+              attrs: z.record(z.any()).optional(),
+            })
+          )
+        )
+        .optional(),
+      text: z.string().optional(),
+    })
+  )
+)
+
+const postSchema = z.object({
+  contractId: z.string(),
+  content: contentSchema.optional(),
+  html: z.string().optional(),
+  markdown: z.string().optional(),
+})
+
+const MAX_COMMENT_JSON_LENGTH = 20000
+
+// For now, only supports creating a new top-level comment on a contract.
+// Replies, posts, chats are not supported yet.
+export const createcomment = newEndpoint({}, async (req, auth) => {
+  const firestore = admin.firestore()
+  const { contractId, content, html, markdown } = validate(postSchema, req.body)
+
+  const creator = await getUser(auth.uid)
+  const contract = await getContract(contractId)
+
+  if (!creator) {
+    throw new APIError(400, 'No user exists with the authenticated user ID.')
+  }
+  if (!contract) {
+    throw new APIError(400, 'No contract exists with the given ID.')
+  }
+
+  let contentJson = null
+  if (content) {
+    contentJson = content
+  } else if (html) {
+    console.log('html', html)
+    contentJson = htmlToRichText(html)
+  } else if (markdown) {
+    const markedParse = marked.parse(markdown)
+    log('parsed', markedParse)
+    contentJson = htmlToRichText(markedParse)
+    log('json', contentJson)
+  }
+
+  if (!contentJson) {
+    throw new APIError(400, 'No comment content provided.')
+  }
+
+  if (JSON.stringify(contentJson).length > MAX_COMMENT_JSON_LENGTH) {
+    throw new APIError(
+      400,
+      `Comment is too long; should be less than ${MAX_COMMENT_JSON_LENGTH} as a JSON string.`
+    )
+  }
+
+  const ref = firestore.collection(`contracts/${contractId}/comments`).doc()
+
+  const comment = removeUndefinedProps({
+    id: ref.id,
+    content: contentJson,
+    createdTime: Date.now(),
+
+    userId: creator.id,
+    userName: creator.name,
+    userUsername: creator.username,
+    userAvatarUrl: creator.avatarUrl,
+
+    // OnContract fields
+    commentType: 'contract',
+    contractId: contractId,
+    contractSlug: contract.slug,
+    contractQuestion: contract.question,
+  })
+
+  await ref.set(comment)
+
+  return { status: 'success', comment }
+})

functions/src/create-contract.ts

@@ -1,215 +0,0 @@
-import * as admin from 'firebase-admin'
-import { z } from 'zod'
-
-import {
-  CPMMBinaryContract,
-  Contract,
-  FreeResponseContract,
-  MAX_DESCRIPTION_LENGTH,
-  MAX_QUESTION_LENGTH,
-  MAX_TAG_LENGTH,
-  NumericContract,
-  OUTCOME_TYPES,
-} from '../../common/contract'
-import { slugify } from '../../common/util/slugify'
-import { randomString } from '../../common/util/random'
-
-import { chargeUser } from './utils'
-import { APIError, newEndpoint, validate, zTimestamp } from './api'
-
-import {
-  FIXED_ANTE,
-  getCpmmInitialLiquidity,
-  getFreeAnswerAnte,
-  getNumericAnte,
-  HOUSE_LIQUIDITY_PROVIDER_ID,
-} from '../../common/antes'
-import { getNoneAnswer } from '../../common/answer'
-import { getNewContract } from '../../common/new-contract'
-import { NUMERIC_BUCKET_COUNT } from '../../common/numeric-constants'
-import { User } from '../../common/user'
-import { Group, MAX_ID_LENGTH } from '../../common/group'
-
-const bodySchema = z.object({
-  question: z.string().min(1).max(MAX_QUESTION_LENGTH),
-  description: z.string().max(MAX_DESCRIPTION_LENGTH),
-  tags: z.array(z.string().min(1).max(MAX_TAG_LENGTH)).optional(),
-  closeTime: zTimestamp().refine(
-    (date) => date.getTime() > new Date().getTime(),
-    'Close time must be in the future.'
-  ),
-  outcomeType: z.enum(OUTCOME_TYPES),
-  groupId: z.string().min(1).max(MAX_ID_LENGTH).optional(),
-})
-
-const binarySchema = z.object({
-  initialProb: z.number().min(1).max(99),
-})
-
-const numericSchema = z.object({
-  min: z.number(),
-  max: z.number(),
-})
-
-export const createmarket = newEndpoint(['POST'], async (req, auth) => {
-  const { question, description, tags, closeTime, outcomeType, groupId } =
-    validate(bodySchema, req.body)
-
-  let min, max, initialProb
-  if (outcomeType === 'NUMERIC') {
-    ;({ min, max } = validate(numericSchema, req.body))
-    if (max - min <= 0.01) throw new APIError(400, 'Invalid range.')
-  }
-  if (outcomeType === 'BINARY') {
-    ;({ initialProb } = validate(binarySchema, req.body))
-  }
-
-  // Uses utc time on server:
-  const today = new Date()
-  let freeMarketResetTime = new Date().setUTCHours(16, 0, 0, 0)
-  if (today.getTime() < freeMarketResetTime) {
-    freeMarketResetTime = freeMarketResetTime - 24 * 60 * 60 * 1000
-  }
-
-  const userDoc = await firestore.collection('users').doc(auth.uid).get()
-  if (!userDoc.exists) {
-    throw new APIError(400, 'No user exists with the authenticated user ID.')
-  }
-  const user = userDoc.data() as User
-
-  let group = null
-  if (groupId) {
-    const groupDoc = await firestore.collection('groups').doc(groupId).get()
-    if (!groupDoc.exists) {
-      throw new APIError(400, 'No group exists with the given group ID.')
-    }
-
-    group = groupDoc.data() as Group
-    if (!group.memberIds.includes(user.id)) {
-      throw new APIError(400, 'User is not a member of the group.')
-    }
-  }
-
-  const userContractsCreatedTodaySnapshot = await firestore
-    .collection(`contracts`)
-    .where('creatorId', '==', auth.uid)
-    .where('createdTime', '>=', freeMarketResetTime)
-    .get()
-  console.log('free market reset time: ', freeMarketResetTime)
-  const isFree = userContractsCreatedTodaySnapshot.size === 0
-
-  const ante = FIXED_ANTE
-
-  // TODO: this is broken because it's not in a transaction
-  if (ante > user.balance && !isFree)
-    throw new APIError(400, `Balance must be at least ${ante}.`)
-
-  console.log(
-    'creating contract for',
-    user.username,
-    'on',
-    question,
-    'ante:',
-    ante || 0
-  )
-
-  const slug = await getSlug(question)
-  const contractRef = firestore.collection('contracts').doc()
-  const contract = getNewContract(
-    contractRef.id,
-    slug,
-    user,
-    question,
-    outcomeType,
-    description,
-    initialProb ?? 0,
-    ante,
-    closeTime.getTime(),
-    tags ?? [],
-    NUMERIC_BUCKET_COUNT,
-    min ?? 0,
-    max ?? 0,
-    group
-      ? {
-          groupId: group.id,
-          groupName: group.name,
-          groupSlug: group.slug,
-        }
-      : undefined
-  )
-
-  if (!isFree && ante) await chargeUser(user.id, ante, true)
-
-  await contractRef.create(contract)
-
-  const providerId = isFree ? HOUSE_LIQUIDITY_PROVIDER_ID : user.id
-
-  if (outcomeType === 'BINARY') {
-    const liquidityDoc = firestore
-      .collection(`contracts/${contract.id}/liquidity`)
-      .doc()
-
-    const lp = getCpmmInitialLiquidity(
-      providerId,
-      contract as CPMMBinaryContract,
-      liquidityDoc.id,
-      ante
-    )
-
-    await liquidityDoc.set(lp)
-  } else if (outcomeType === 'FREE_RESPONSE') {
-    const noneAnswerDoc = firestore
-      .collection(`contracts/${contract.id}/answers`)
-      .doc('0')
-
-    const noneAnswer = getNoneAnswer(contract.id, user)
-    await noneAnswerDoc.set(noneAnswer)
-
-    const anteBetDoc = firestore
-      .collection(`contracts/${contract.id}/bets`)
-      .doc()
-
-    const anteBet = getFreeAnswerAnte(
-      providerId,
-      contract as FreeResponseContract,
-      anteBetDoc.id
-    )
-    await anteBetDoc.set(anteBet)
-  } else if (outcomeType === 'NUMERIC') {
-    const anteBetDoc = firestore
-      .collection(`contracts/${contract.id}/bets`)
-      .doc()
-
-    const anteBet = getNumericAnte(
-      providerId,
-      contract as NumericContract,
-      ante,
-      anteBetDoc.id
-    )
-
-    await anteBetDoc.set(anteBet)
-  }
-
-  return contract
-})
-
-const getSlug = async (question: string) => {
-  const proposedSlug = slugify(question)
-
-  const preexistingContract = await getContractFromSlug(proposedSlug)
-
-  return preexistingContract
-    ? proposedSlug + '-' + randomString()
-    : proposedSlug
-}
-
-const firestore = admin.firestore()
-
-export async function getContractFromSlug(slug: string) {
-  const snap = await firestore
-    .collection('contracts')
-    .where('slug', '==', slug)
-    .get()
-
-  return snap.empty ? undefined : (snap.docs[0].data() as Contract)
-}

functions/src/create-group.ts

@@ -10,7 +10,7 @@ import {
   MAX_GROUP_NAME_LENGTH,
   MAX_ID_LENGTH,
 } from '../../common/group'
-import { APIError, newEndpoint, validate } from '../../functions/src/api'
+import { APIError, newEndpoint, validate } from './api'
 import { z } from 'zod'
 
 const bodySchema = z.object({
@@ -20,7 +20,8 @@ const bodySchema = z.object({
   about: z.string().min(1).max(MAX_ABOUT_LENGTH).optional(),
 })
 
-export const creategroup = newEndpoint(['POST'], async (req, auth) => {
+export const creategroup = newEndpoint({}, async (req, auth) => {
+  const firestore = admin.firestore()
   const { name, about, memberIds, anyoneCanJoin } = validate(
     bodySchema,
     req.body
@@ -57,17 +58,29 @@ export const creategroup = newEndpoint(['POST'], async (req, auth) => {
     createdTime: Date.now(),
     mostRecentActivityTime: Date.now(),
     // TODO: allow users to add contract ids on group creation
-    contractIds: [],
     anyoneCanJoin,
-    memberIds,
+    totalContracts: 0,
+    totalMembers: memberIds.length,
+    postIds: [],
+    pinnedItems: [],
   }
 
   await groupRef.create(group)
 
+  // create a GroupMemberDoc for each member
+  await Promise.all(
+    memberIds.map((memberId) =>
+      groupRef.collection('groupMembers').doc(memberId).create({
+        userId: memberId,
+        createdTime: Date.now(),
+      })
+    )
+  )
+
   return { status: 'success', group: group }
 })
 
-const getSlug = async (name: string) => {
+export const getSlug = async (name: string) => {
   const proposedSlug = slugify(name)
 
   const preexistingGroup = await getGroupFromSlug(proposedSlug)
@@ -75,9 +88,8 @@ const getSlug = async (name: string) => {
   return preexistingGroup ? proposedSlug + '-' + randomString() : proposedSlug
 }
 
-const firestore = admin.firestore()
-
 export async function getGroupFromSlug(slug: string) {
+  const firestore = admin.firestore()
   const snap = await firestore
     .collection('groups')
     .where('slug', '==', slug)

functions/src/create-market.ts

@@ -0,0 +1,383 @@
+import * as admin from 'firebase-admin'
+import { z } from 'zod'
+
+import {
+  Contract,
+  CPMMBinaryContract,
+  FreeResponseContract,
+  MAX_QUESTION_LENGTH,
+  MAX_TAG_LENGTH,
+  MultipleChoiceContract,
+  NumericContract,
+  OUTCOME_TYPES,
+  VISIBILITIES,
+} from '../../common/contract'
+import { slugify } from '../../common/util/slugify'
+import { randomString } from '../../common/util/random'
+
+import { chargeUser, getContract, isProd } from './utils'
+import { APIError, AuthedUser, newEndpoint, validate, zTimestamp } from './api'
+
+import { FIXED_ANTE, FREE_MARKETS_PER_USER_MAX } from '../../common/economy'
+import {
+  DEV_HOUSE_LIQUIDITY_PROVIDER_ID,
+  getCpmmInitialLiquidity,
+  getFreeAnswerAnte,
+  getMultipleChoiceAntes,
+  getNumericAnte,
+  HOUSE_LIQUIDITY_PROVIDER_ID,
+} from '../../common/antes'
+import { Answer, getNoneAnswer } from '../../common/answer'
+import { getNewContract } from '../../common/new-contract'
+import { NUMERIC_BUCKET_COUNT } from '../../common/numeric-constants'
+import { User } from '../../common/user'
+import { Group, GroupLink, MAX_ID_LENGTH } from '../../common/group'
+import { getPseudoProbability } from '../../common/pseudo-numeric'
+import { JSONContent } from '@tiptap/core'
+import { uniq, zip } from 'lodash'
+import { Bet } from '../../common/bet'
+import { FieldValue } from 'firebase-admin/firestore'
+
+const descScehma: z.ZodType<JSONContent> = z.lazy(() =>
+  z.intersection(
+    z.record(z.any()),
+    z.object({
+      type: z.string().optional(),
+      attrs: z.record(z.any()).optional(),
+      content: z.array(descScehma).optional(),
+      marks: z
+        .array(
+          z.intersection(
+            z.record(z.any()),
+            z.object({
+              type: z.string(),
+              attrs: z.record(z.any()).optional(),
+            })
+          )
+        )
+        .optional(),
+      text: z.string().optional(),
+    })
+  )
+)
+
+const bodySchema = z.object({
+  question: z.string().min(1).max(MAX_QUESTION_LENGTH),
+  description: descScehma.or(z.string()).optional(),
+  tags: z.array(z.string().min(1).max(MAX_TAG_LENGTH)).optional(),
+  closeTime: zTimestamp().refine(
+    (date) => date.getTime() > new Date().getTime(),
+    'Close time must be in the future.'
+  ),
+  outcomeType: z.enum(OUTCOME_TYPES),
+  groupId: z.string().min(1).max(MAX_ID_LENGTH).optional(),
+  visibility: z.enum(VISIBILITIES).optional(),
+})
+
+const binarySchema = z.object({
+  initialProb: z.number().min(1).max(99),
+})
+
+const finite = () =>
+  z.number().gte(Number.MIN_SAFE_INTEGER).lte(Number.MAX_SAFE_INTEGER)
+
+const numericSchema = z.object({
+  min: finite(),
+  max: finite(),
+  initialValue: finite(),
+  isLogScale: z.boolean().optional(),
+})
+
+const multipleChoiceSchema = z.object({
+  answers: z.string().trim().min(1).array().min(2),
+})
+
+export const createmarket = newEndpoint({}, (req, auth) => {
+  return createMarketHelper(req.body, auth)
+})
+
+export async function createMarketHelper(body: any, auth: AuthedUser) {
+  const {
+    question,
+    description,
+    tags,
+    closeTime,
+    outcomeType,
+    groupId,
+    visibility = 'public',
+  } = validate(bodySchema, body)
+
+  let min, max, initialProb, isLogScale, answers
+
+  if (outcomeType === 'PSEUDO_NUMERIC' || outcomeType === 'NUMERIC') {
+    let initialValue
+    ;({ min, max, initialValue, isLogScale } = validate(numericSchema, body))
+    if (max - min <= 0.01 || initialValue <= min || initialValue >= max)
+      throw new APIError(400, 'Invalid range.')
+
+    initialProb = getPseudoProbability(initialValue, min, max, isLogScale) * 100
+
+    if (initialProb < 1 || initialProb > 99)
+      if (outcomeType === 'PSEUDO_NUMERIC')
+        throw new APIError(
+          400,
+          `Initial value is too ${initialProb < 1 ? 'low' : 'high'}`
+        )
+      else throw new APIError(400, 'Invalid initial probability.')
+  }
+
+  if (outcomeType === 'BINARY') {
+    ;({ initialProb } = validate(binarySchema, body))
+  }
+
+  if (outcomeType === 'MULTIPLE_CHOICE') {
+    ;({ answers } = validate(multipleChoiceSchema, body))
+  }
+
+  const userDoc = await firestore.collection('users').doc(auth.uid).get()
+  if (!userDoc.exists) {
+    throw new APIError(400, 'No user exists with the authenticated user ID.')
+  }
+  const user = userDoc.data() as User
+
+  const ante = FIXED_ANTE
+  const deservesFreeMarket =
+    (user?.freeMarketsCreated ?? 0) < FREE_MARKETS_PER_USER_MAX
+  // TODO: this is broken because it's not in a transaction
+  if (ante > user.balance && !deservesFreeMarket)
+    throw new APIError(400, `Balance must be at least ${ante}.`)
+
+  let group: Group | null = null
+  if (groupId) {
+    const groupDocRef = firestore.collection('groups').doc(groupId)
+    const groupDoc = await groupDocRef.get()
+    if (!groupDoc.exists) {
+      throw new APIError(400, 'No group exists with the given group ID.')
+    }
+
+    group = groupDoc.data() as Group
+    const groupMembersSnap = await firestore
+      .collection(`groups/${groupId}/groupMembers`)
+      .get()
+    const groupMemberDocs = groupMembersSnap.docs.map(
+      (doc) => doc.data() as { userId: string; createdTime: number }
+    )
+    if (
+      !groupMemberDocs.map((m) => m.userId).includes(user.id) &&
+      !group.anyoneCanJoin &&
+      group.creatorId !== user.id
+    ) {
+      throw new APIError(
+        400,
+        'User must be a member/creator of the group or group must be open to add markets to it.'
+      )
+    }
+  }
+  const slug = await getSlug(question)
+  const contractRef = firestore.collection('contracts').doc()
+
+  console.log(
+    'creating contract for',
+    user.username,
+    'on',
+    question,
+    'ante:',
+    ante || 0
+  )
+
+  // convert string descriptions into JSONContent
+  const newDescription =
+    !description || typeof description === 'string'
+      ? {
+          type: 'doc',
+          content: [
+            {
+              type: 'paragraph',
+              content: [{ type: 'text', text: description || ' ' }],
+            },
+          ],
+        }
+      : description
+
+  const contract = getNewContract(
+    contractRef.id,
+    slug,
+    user,
+    question,
+    outcomeType,
+    newDescription,
+    initialProb ?? 0,
+    ante,
+    closeTime.getTime(),
+    tags ?? [],
+    NUMERIC_BUCKET_COUNT,
+    min ?? 0,
+    max ?? 0,
+    isLogScale ?? false,
+    answers ?? [],
+    visibility
+  )
+
+  const providerId = deservesFreeMarket
+    ? isProd()
+      ? HOUSE_LIQUIDITY_PROVIDER_ID
+      : DEV_HOUSE_LIQUIDITY_PROVIDER_ID
+    : user.id
+
+  if (ante) await chargeUser(providerId, ante, true)
+  if (deservesFreeMarket)
+    await firestore
+      .collection('users')
+      .doc(user.id)
+      .update({ freeMarketsCreated: FieldValue.increment(1) })
+
+  await contractRef.create(contract)
+
+  if (group != null) {
+    const groupContractsSnap = await firestore
+      .collection(`groups/${groupId}/groupContracts`)
+      .get()
+    const groupContracts = groupContractsSnap.docs.map(
+      (doc) => doc.data() as { contractId: string; createdTime: number }
+    )
+    if (!groupContracts.map((c) => c.contractId).includes(contractRef.id)) {
+      await createGroupLinks(group, [contractRef.id], auth.uid)
+      const groupContractRef = firestore
+        .collection(`groups/${groupId}/groupContracts`)
+        .doc(contract.id)
+      await groupContractRef.set({
+        contractId: contract.id,
+        createdTime: Date.now(),
+      })
+    }
+  }
+
+  if (outcomeType === 'BINARY' || outcomeType === 'PSEUDO_NUMERIC') {
+    const liquidityDoc = firestore
+      .collection(`contracts/${contract.id}/liquidity`)
+      .doc()
+
+    const lp = getCpmmInitialLiquidity(
+      providerId,
+      contract as CPMMBinaryContract,
+      liquidityDoc.id,
+      ante
+    )
+
+    await liquidityDoc.set(lp)
+  } else if (outcomeType === 'MULTIPLE_CHOICE') {
+    const betCol = firestore.collection(`contracts/${contract.id}/bets`)
+    const betDocs = (answers ?? []).map(() => betCol.doc())
+
+    const answerCol = firestore.collection(`contracts/${contract.id}/answers`)
+    const answerDocs = (answers ?? []).map((_, i) =>
+      answerCol.doc(i.toString())
+    )
+
+    const { bets, answerObjects } = getMultipleChoiceAntes(
+      user,
+      contract as MultipleChoiceContract,
+      answers ?? [],
+      betDocs.map((bd) => bd.id)
+    )
+
+    await Promise.all(
+      zip(bets, betDocs).map(([bet, doc]) => doc?.create(bet as Bet))
+    )
+    await Promise.all(
+      zip(answerObjects, answerDocs).map(([answer, doc]) =>
+        doc?.create(answer as Answer)
+      )
+    )
+    await contractRef.update({ answers: answerObjects })
+  } else if (outcomeType === 'FREE_RESPONSE') {
+    const noneAnswerDoc = firestore
+      .collection(`contracts/${contract.id}/answers`)
+      .doc('0')
+
+    const noneAnswer = getNoneAnswer(contract.id, user)
+    await noneAnswerDoc.set(noneAnswer)
+
+    const anteBetDoc = firestore
+      .collection(`contracts/${contract.id}/bets`)
+      .doc()
+
+    const anteBet = getFreeAnswerAnte(
+      providerId,
+      contract as FreeResponseContract,
+      anteBetDoc.id
+    )
+    await anteBetDoc.set(anteBet)
+  } else if (outcomeType === 'NUMERIC') {
+    const anteBetDoc = firestore
+      .collection(`contracts/${contract.id}/bets`)
+      .doc()
+
+    const anteBet = getNumericAnte(
+      providerId,
+      contract as NumericContract,
+      ante,
+      anteBetDoc.id
+    )
+
+    await anteBetDoc.set(anteBet)
+  }
+
+  return contract
+}
+
+const getSlug = async (question: string) => {
+  const proposedSlug = slugify(question)
+
+  const preexistingContract = await getContractFromSlug(proposedSlug)
+
+  return preexistingContract
+    ? proposedSlug + '-' + randomString()
+    : proposedSlug
+}
+
+const firestore = admin.firestore()
+
+export async function getContractFromSlug(slug: string) {
+  const snap = await firestore
+    .collection('contracts')
+    .where('slug', '==', slug)
+    .get()
+
+  return snap.empty ? undefined : (snap.docs[0].data() as Contract)
+}
+
+async function createGroupLinks(
+  group: Group,
+  contractIds: string[],
+  userId: string
+) {
+  for (const contractId of contractIds) {
+    const contract = await getContract(contractId)
+    if (!contract?.groupSlugs?.includes(group.slug)) {
+      await firestore
+        .collection('contracts')
+        .doc(contractId)
+        .update({
+          groupSlugs: uniq([group.slug, ...(contract?.groupSlugs ?? [])]),
+        })
+    }
+    if (!contract?.groupLinks?.map((gl) => gl.groupId).includes(group.id)) {
+      await firestore
+        .collection('contracts')
+        .doc(contractId)
+        .update({
+          groupLinks: [
+            {
+              groupId: group.id,
+              name: group.name,
+              slug: group.slug,
+              userId,
+              createdTime: Date.now(),
+            } as GroupLink,
+            ...(contract?.groupLinks ?? []),
+          ],
+        })
+    }
+  }
+}