Merge branch 'manifoldmarkets:main' into main

common/antes.ts

@@ -11,11 +11,8 @@ import {
 import { User } from './user'
 import { LiquidityProvision } from './liquidity-provision'
 import { noFees } from './fees'
-import { ENV_CONFIG } from './envs/constants'
 import { Answer } from './answer'
 
-export const FIXED_ANTE = ENV_CONFIG.fixedAnte ?? 100
-
 export const HOUSE_LIQUIDITY_PROVIDER_ID = 'IPTOzEqrpkWmEzh6hwvAyY9PqFb2' // @ManifoldMarkets' id
 export const DEV_HOUSE_LIQUIDITY_PROVIDER_ID = '94YYTk1AFWfbWMpfYcvnnwI1veP2' // @ManifoldMarkets' id
 

common/bet.ts

@@ -61,5 +61,3 @@ export type fill = {
   // I.e. -fill.shares === matchedBet.shares
   isSale?: boolean
 }
-
-export const MAX_LOAN_PER_CONTRACT = 20

common/contract.ts

@@ -57,6 +57,8 @@ export type Contract<T extends AnyContractType = AnyContractType> = {
   uniqueBettorIds?: string[]
   uniqueBettorCount?: number
   popularityScore?: number
+  followerCount?: number
+  featuredOnHomeRank?: number
 } & T
 
 export type BinaryContract = Contract & Binary

common/economy.ts

@@ -0,0 +1,17 @@
+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 ?? 500
+
+export const UNIQUE_BETTOR_BONUS_AMOUNT = econ?.UNIQUE_BETTOR_BONUS_AMOUNT ?? 10
+export const BETTING_STREAK_BONUS_AMOUNT =
+  econ?.BETTING_STREAK_BONUS_AMOUNT ?? 10
+export const BETTING_STREAK_BONUS_MAX = econ?.BETTING_STREAK_BONUS_MAX ?? 50
+export const BETTING_STREAK_RESET_HOUR = econ?.BETTING_STREAK_RESET_HOUR ?? 0
+export const FREE_MARKETS_PER_USER_MAX = econ?.FREE_MARKETS_PER_USER_MAX ?? 5

common/envs/constants.ts

@@ -44,3 +44,7 @@ export const CORS_ORIGIN_VERCEL = new RegExp(
 )
 // 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/prod.ts

@@ -19,10 +19,23 @@ export type EnvConfig = {
   navbarLogoPath?: string
   newQuestionPlaceholders: string[]
 
-  // Currency controls
+  economy?: Economy
-  fixedAnte?: number
+}
-  startingBalance?: number
+
-  referralBonus?: number
+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
 }
 
 type FirebaseConfig = {
@@ -58,6 +71,8 @@ export const PROD_CONFIG: EnvConfig = {
     'taowell@gmail.com', // Stephen
     'abc.sinclair@gmail.com', // Sinclair
     'manticmarkets@gmail.com', // Manifold
+    'iansphilips@gmail.com', // Ian
+    'd4vidchee@gmail.com', // D4vid
   ],
   visibility: 'PUBLIC',
 

common/fees.ts

@@ -1,9 +1,9 @@
 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_PLATFORM_FEE = 0.0
-export const DPM_CREATOR_FEE = 0.04
+export const DPM_CREATOR_FEE = 0.0
 export const DPM_FEES = DPM_PLATFORM_FEE + DPM_CREATOR_FEE
 
 export type Fees = {

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 = 0.01
+
+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/new-bet.ts

@@ -1,6 +1,6 @@
 import { sortBy, sum, sumBy } from 'lodash'
 
-import { Bet, fill, LimitBet, MAX_LOAN_PER_CONTRACT, NumericBet } from './bet'
+import { Bet, fill, LimitBet, NumericBet } from './bet'
 import {
   calculateDpmShares,
   getDpmProbability,
@@ -276,8 +276,7 @@ export const getBinaryBetStats = (
 export const getNewBinaryDpmBetInfo = (
   outcome: 'YES' | 'NO',
   amount: number,
-  contract: DPMBinaryContract,
+  contract: DPMBinaryContract
-  loanAmount: number
 ) => {
   const { YES: yesPool, NO: noPool } = contract.pool
 
@@ -308,7 +307,7 @@ export const getNewBinaryDpmBetInfo = (
   const newBet: CandidateBet = {
     contractId: contract.id,
     amount,
-    loanAmount,
+    loanAmount: 0,
     shares,
     outcome,
     probBefore,
@@ -324,7 +323,6 @@ export const getNewMultiBetInfo = (
   outcome: string,
   amount: number,
   contract: FreeResponseContract | MultipleChoiceContract,
-  loanAmount: number
 ) => {
   const { pool, totalShares, totalBets } = contract
 
@@ -345,7 +343,7 @@ export const getNewMultiBetInfo = (
   const newBet: CandidateBet = {
     contractId: contract.id,
     amount,
-    loanAmount,
+    loanAmount: 0,
     shares,
     outcome,
     probBefore,
@@ -399,13 +397,3 @@ 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/notification.ts

@@ -39,6 +39,7 @@ export type notification_source_types =
   | 'bonus'
   | 'challenge'
   | 'betting_streak_bonus'
+  | 'loan'
 
 export type notification_source_update_types =
   | 'created'
@@ -68,3 +69,5 @@ export type notification_reason_types =
   | 'user_joined_from_your_group_invite'
   | 'challenge_accepted'
   | 'betting_streak_incremented'
+  | 'loan_income'
+  | 'you_follow_contract'

common/numeric-constants.ts

@@ -3,7 +3,3 @@ export const NUMERIC_FIXED_VAR = 0.005
 
 export const NUMERIC_GRAPH_COLOR = '#5fa5f9'
 export const NUMERIC_TEXT_COLOR = 'text-blue-500'
-export const UNIQUE_BETTOR_BONUS_AMOUNT = 10
-export const BETTING_STREAK_BONUS_AMOUNT = 5
-export const BETTING_STREAK_BONUS_MAX = 100
-export const BETTING_STREAK_RESET_HOUR = 0

common/redeem.ts

@@ -13,8 +13,9 @@ export const getRedeemableAmount = (bets: RedeemableBet[]) => {
   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) / shares : 0
   const loanAmount = sumBy(bets, (bet) => bet.loanAmount ?? 0)
-  const loanPayment = Math.min(loanAmount, shares)
+  const loanPayment = loanAmount * soldFrac
   const netAmount = shares - loanPayment
   return { shares, loanPayment, netAmount }
 }

common/sell-bet.ts

@@ -13,7 +13,7 @@ export type CandidateBet<T extends Bet> = Omit<T, 'id' | 'userId'>
 
 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)
 
@@ -64,6 +64,7 @@ export const getSellBetInfo = (bet: Bet, contract: DPMContract) => {
       betId,
     },
     fees,
+    loanAmount: -(loanAmount ?? 0),
   }
 
   return {
@@ -79,8 +80,8 @@ export const getCpmmSellBetInfo = (
   shares: number,
   outcome: 'YES' | 'NO',
   contract: CPMMContract,
-  prevLoanAmount: number,
+  unfilledBets: LimitBet[],
-  unfilledBets: LimitBet[]
+  loanPaid: number
 ) => {
   const { pool, p } = contract
 
@@ -91,7 +92,6 @@ export const getCpmmSellBetInfo = (
     unfilledBets
   )
 
-  const loanPaid = Math.min(prevLoanAmount, saleValue)
   const probBefore = getCpmmProbability(pool, p)
   const probAfter = getCpmmProbability(cpmmState.pool, cpmmState.p)
 

common/user.ts

@@ -1,5 +1,3 @@
-import { ENV_CONFIG } from './envs/constants'
-
 export type User = {
   id: string
   createdTime: number
@@ -32,6 +30,7 @@ export type User = {
     allTime: number
   }
 
+  nextLoanCached: number
   followerCountCached: number
 
   followedCategories?: string[]
@@ -43,13 +42,10 @@ export type User = {
   shouldShowWelcome?: boolean
   lastBetTime?: number
   currentBettingStreak?: number
+  hasSeenContractFollowModal?: boolean
+  freeMarketsCreated?: number
 }
 
-export const STARTING_BALANCE = ENV_CONFIG.startingBalance ?? 1000
-// for sus users, i.e. multiple sign ups for same person
-export const SUS_STARTING_BALANCE = ENV_CONFIG.startingBalance ?? 10
-export const REFERRAL_AMOUNT = ENV_CONFIG.referralBonus ?? 500
-
 export type PrivateUser = {
   id: string // same as User.id
   username: string // denormalized from User
@@ -60,6 +56,7 @@ export type PrivateUser = {
   unsubscribedFromAnswerEmails?: boolean
   unsubscribedFromGenericEmails?: boolean
   unsubscribedFromWeeklyTrendingEmails?: boolean
+  weeklyTrendingEmailSent?: boolean
   manaBonusEmailSent?: boolean
   initialDeviceToken?: string
   initialIpAddress?: string

dev.sh

@@ -24,7 +24,7 @@ then
   npx concurrently \
       -n FIRESTORE,FUNCTIONS,NEXT,TS \
       -c green,white,magenta,cyan \
-      "yarn --cwd=functions firestore" \
+      "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 \

docs/docs/api.md

@@ -97,7 +97,6 @@ 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"
@@ -135,8 +134,6 @@ 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: JSONContent // Rich text content. See https://tiptap.dev/guide/output#option-1-json
-    textDescription: string // string description without formatting, images, or embeds
 
     // 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.
@@ -398,6 +395,8 @@ Requires no authorization.
     bets: Bet[]
     comments: Comment[]
     answers?: Answer[]
+    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 = {

firestore.rules

@@ -10,7 +10,9 @@ service cloud.firestore {
         'akrolsmir@gmail.com',
         'jahooma@gmail.com',
         'taowell@gmail.com',
-        'manticmarkets@gmail.com'
+        'abc.sinclair@gmail.com',
+        'manticmarkets@gmail.com',
+        'iansphilips@gmail.com'
       ]
     }
 
@@ -22,7 +24,7 @@ service cloud.firestore {
       allow read;
       allow update: if userId == request.auth.uid
                        && request.resource.data.diff(resource.data).affectedKeys()
-                                                                    .hasOnly(['bio', 'bannerUrl', 'website', 'twitterHandle', 'discordHandle', 'followedCategories', 'lastPingTime','shouldShowWelcome']);
+                                                                    .hasOnly(['bio', 'bannerUrl', 'website', 'twitterHandle', 'discordHandle', 'followedCategories', 'lastPingTime','shouldShowWelcome', 'hasSeenContractFollowModal']);
       // User referral rules
       allow update: if userId == request.auth.uid
                          && request.resource.data.diff(resource.data).affectedKeys()
@@ -43,6 +45,11 @@ service cloud.firestore {
       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;

functions/package.json

@@ -13,8 +13,8 @@
     "deploy": "firebase deploy --only functions",
     "logs": "firebase functions:log",
     "dev": "nodemon src/serve.ts",
-    "firestore": "firebase emulators:start --only firestore --import=./firestore_export",
+    "localDbScript": "firebase emulators:start --only functions,firestore,pubsub --import=./firestore_export",
-    "serve": "firebase use dev && yarn build && firebase emulators:start --only functions,firestore --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 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)",

functions/src/create-answer.ts

@@ -75,10 +75,8 @@ export const createanswer = newEndpoint(opts, async (req, auth) => {
     }
     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()

functions/src/create-market.ts

@@ -15,15 +15,17 @@ import {
 import { slugify } from '../../common/util/slugify'
 import { randomString } from '../../common/util/random'
 
-import { chargeUser, getContract } from './utils'
+import { chargeUser, getContract, isProd } from './utils'
 import { APIError, newEndpoint, validate, zTimestamp } from './api'
 
+import { FIXED_ANTE, FREE_MARKETS_PER_USER_MAX } from '../../common/economy'
 import {
-  FIXED_ANTE,
+  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'
@@ -34,6 +36,7 @@ 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(
@@ -137,9 +140,10 @@ export const createmarket = newEndpoint({}, async (req, auth) => {
   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)
+  if (ante > user.balance && !deservesFreeMarket)
     throw new APIError(400, `Balance must be at least ${ante}.`)
 
   let group: Group | null = null
@@ -207,7 +211,18 @@ export const createmarket = newEndpoint({}, async (req, auth) => {
     visibility
   )
 
-  if (ante) await chargeUser(user.id, ante, true)
+  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)
 
@@ -221,8 +236,6 @@ export const createmarket = newEndpoint({}, async (req, auth) => {
     }
   }
 
-  const providerId = user.id
-
   if (outcomeType === 'BINARY' || outcomeType === 'PSEUDO_NUMERIC') {
     const liquidityDoc = firestore
       .collection(`contracts/${contract.id}/liquidity`)

functions/src/create-notification.ts

@@ -7,7 +7,7 @@ import {
 } from '../../common/notification'
 import { User } from '../../common/user'
 import { Contract } from '../../common/contract'
-import { getValues } from './utils'
+import { getValues, log } from './utils'
 import { Comment } from '../../common/comment'
 import { uniq } from 'lodash'
 import { Bet, LimitBet } from '../../common/bet'
@@ -33,19 +33,12 @@ export const createNotification = async (
   sourceText: string,
   miscData?: {
     contract?: Contract
-    relatedSourceType?: notification_source_types
     recipients?: string[]
     slug?: string
     title?: string
   }
 ) => {
-  const {
+  const { contract: sourceContract, recipients, slug, title } = miscData ?? {}
-    contract: sourceContract,
-    relatedSourceType,
-    recipients,
-    slug,
-    title,
-  } = miscData ?? {}
 
   const shouldGetNotification = (
     userId: string,
@@ -90,24 +83,6 @@ export const createNotification = async (
     )
   }
 
-  const notifyLiquidityProviders = async (
-    userToReasonTexts: user_to_reason_texts,
-    contract: Contract
-  ) => {
-    const liquidityProviders = await firestore
-      .collection(`contracts/${contract.id}/liquidity`)
-      .get()
-    const liquidityProvidersIds = uniq(
-      liquidityProviders.docs.map((doc) => doc.data().userId)
-    )
-    liquidityProvidersIds.forEach((userId) => {
-      if (!shouldGetNotification(userId, userToReasonTexts)) return
-      userToReasonTexts[userId] = {
-        reason: 'on_contract_with_users_shares_in',
-      }
-    })
-  }
-
   const notifyUsersFollowers = async (
     userToReasonTexts: user_to_reason_texts
   ) => {
@@ -129,23 +104,6 @@ export const createNotification = async (
     })
   }
 
-  const notifyRepliedUser = (
-    userToReasonTexts: user_to_reason_texts,
-    relatedUserId: string,
-    relatedSourceType: notification_source_types
-  ) => {
-    if (!shouldGetNotification(relatedUserId, userToReasonTexts)) return
-    if (relatedSourceType === 'comment') {
-      userToReasonTexts[relatedUserId] = {
-        reason: 'reply_to_users_comment',
-      }
-    } else if (relatedSourceType === 'answer') {
-      userToReasonTexts[relatedUserId] = {
-        reason: 'reply_to_users_answer',
-      }
-    }
-  }
-
   const notifyFollowedUser = (
     userToReasonTexts: user_to_reason_texts,
     followedUserId: string
@@ -182,71 +140,6 @@ export const createNotification = async (
       }
   }
 
-  const notifyOtherAnswerersOnContract = async (
-    userToReasonTexts: user_to_reason_texts,
-    sourceContract: Contract
-  ) => {
-    const answers = await getValues<Answer>(
-      firestore
-        .collection('contracts')
-        .doc(sourceContract.id)
-        .collection('answers')
-    )
-    const recipientUserIds = uniq(answers.map((answer) => answer.userId))
-    recipientUserIds.forEach((userId) => {
-      if (shouldGetNotification(userId, userToReasonTexts))
-        userToReasonTexts[userId] = {
-          reason: 'on_contract_with_users_answer',
-        }
-    })
-  }
-
-  const notifyOtherCommentersOnContract = async (
-    userToReasonTexts: user_to_reason_texts,
-    sourceContract: Contract
-  ) => {
-    const comments = await getValues<Comment>(
-      firestore
-        .collection('contracts')
-        .doc(sourceContract.id)
-        .collection('comments')
-    )
-    const recipientUserIds = uniq(comments.map((comment) => comment.userId))
-    recipientUserIds.forEach((userId) => {
-      if (shouldGetNotification(userId, userToReasonTexts))
-        userToReasonTexts[userId] = {
-          reason: 'on_contract_with_users_comment',
-        }
-    })
-  }
-
-  const notifyBettorsOnContract = async (
-    userToReasonTexts: user_to_reason_texts,
-    sourceContract: Contract
-  ) => {
-    const betsSnap = await firestore
-      .collection(`contracts/${sourceContract.id}/bets`)
-      .get()
-    const bets = betsSnap.docs.map((doc) => doc.data() as Bet)
-    // filter bets for only users that have an amount invested still
-    const recipientUserIds = uniq(bets.map((bet) => bet.userId)).filter(
-      (userId) => {
-        return (
-          getContractBetMetrics(
-            sourceContract,
-            bets.filter((bet) => bet.userId === userId)
-          ).invested > 0
-        )
-      }
-    )
-    recipientUserIds.forEach((userId) => {
-      if (shouldGetNotification(userId, userToReasonTexts))
-        userToReasonTexts[userId] = {
-          reason: 'on_contract_with_users_shares_in',
-        }
-    })
-  }
-
   const notifyUserAddedToGroup = (
     userToReasonTexts: user_to_reason_texts,
     relatedUserId: string
@@ -266,9 +159,9 @@ export const createNotification = async (
     }
   }
 
-  const getUsersToNotify = async () => {
   const userToReasonTexts: user_to_reason_texts = {}
   // The following functions modify the userToReasonTexts object in place.
+
   if (sourceType === 'follow' && recipients?.[0]) {
     notifyFollowedUser(userToReasonTexts, recipients[0])
   } else if (
@@ -277,47 +170,278 @@ export const createNotification = async (
     recipients
   ) {
     recipients.forEach((r) => notifyUserAddedToGroup(userToReasonTexts, r))
-    }
+  } else if (
-
+    sourceType === 'contract' &&
-    // The following functions need sourceContract to be defined.
+    sourceUpdateType === 'created' &&
-    if (!sourceContract) return userToReasonTexts
+    sourceContract
-
-    if (
-      sourceType === 'comment' ||
-      sourceType === 'answer' ||
-      (sourceType === 'contract' &&
-        (sourceUpdateType === 'updated' || sourceUpdateType === 'resolved'))
   ) {
-      if (sourceType === 'comment') {
-        if (recipients?.[0] && relatedSourceType)
-          notifyRepliedUser(userToReasonTexts, recipients[0], relatedSourceType)
-        if (sourceText) notifyTaggedUsers(userToReasonTexts, recipients ?? [])
-      }
-      await notifyContractCreator(userToReasonTexts, sourceContract)
-      await notifyOtherAnswerersOnContract(userToReasonTexts, sourceContract)
-      await notifyLiquidityProviders(userToReasonTexts, sourceContract)
-      await notifyBettorsOnContract(userToReasonTexts, sourceContract)
-      await notifyOtherCommentersOnContract(userToReasonTexts, sourceContract)
-    } else if (sourceType === 'contract' && sourceUpdateType === 'created') {
     await notifyUsersFollowers(userToReasonTexts)
     notifyTaggedUsers(userToReasonTexts, recipients ?? [])
-    } else if (sourceType === 'contract' && sourceUpdateType === 'closed') {
+  } else if (
+    sourceType === 'contract' &&
+    sourceUpdateType === 'closed' &&
+    sourceContract
+  ) {
     await notifyContractCreator(userToReasonTexts, sourceContract, {
       force: true,
     })
-    } else if (sourceType === 'liquidity' && sourceUpdateType === 'created') {
+  } else if (
+    sourceType === 'liquidity' &&
+    sourceUpdateType === 'created' &&
+    sourceContract
+  ) {
     await notifyContractCreator(userToReasonTexts, sourceContract)
-    } else if (sourceType === 'bonus' && sourceUpdateType === 'created') {
+  } else if (
+    sourceType === 'bonus' &&
+    sourceUpdateType === 'created' &&
+    sourceContract
+  ) {
     // Note: the daily bonus won't have a contract attached to it
     await notifyContractCreatorOfUniqueBettorsBonus(
       userToReasonTexts,
       sourceContract.creatorId
     )
   }
-    return userToReasonTexts
+
+  await createUsersNotifications(userToReasonTexts)
 }
 
-  const userToReasonTexts = await getUsersToNotify()
+export const createCommentOrAnswerOrUpdatedContractNotification = async (
+  sourceId: string,
+  sourceType: notification_source_types,
+  sourceUpdateType: notification_source_update_types,
+  sourceUser: User,
+  idempotencyKey: string,
+  sourceText: string,
+  sourceContract: Contract,
+  miscData?: {
+    relatedSourceType?: notification_source_types
+    repliedUserId?: string
+    taggedUserIds?: string[]
+  }
+) => {
+  const { relatedSourceType, repliedUserId, taggedUserIds } = miscData ?? {}
+
+  const createUsersNotifications = async (
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    await Promise.all(
+      Object.keys(userToReasonTexts).map(async (userId) => {
+        const notificationRef = firestore
+          .collection(`/users/${userId}/notifications`)
+          .doc(idempotencyKey)
+        const notification: Notification = {
+          id: idempotencyKey,
+          userId,
+          reason: userToReasonTexts[userId].reason,
+          createdTime: Date.now(),
+          isSeen: false,
+          sourceId,
+          sourceType,
+          sourceUpdateType,
+          sourceContractId: sourceContract.id,
+          sourceUserName: sourceUser.name,
+          sourceUserUsername: sourceUser.username,
+          sourceUserAvatarUrl: sourceUser.avatarUrl,
+          sourceText,
+          sourceContractCreatorUsername: sourceContract.creatorUsername,
+          sourceContractTitle: sourceContract.question,
+          sourceContractSlug: sourceContract.slug,
+          sourceSlug: sourceContract.slug,
+          sourceTitle: sourceContract.question,
+        }
+        await notificationRef.set(removeUndefinedProps(notification))
+      })
+    )
+  }
+
+  // get contract follower documents and check here if they're a follower
+  const contractFollowersSnap = await firestore
+    .collection(`contracts/${sourceContract.id}/follows`)
+    .get()
+  const contractFollowersIds = contractFollowersSnap.docs.map(
+    (doc) => doc.data().id
+  )
+  log('contractFollowerIds', contractFollowersIds)
+
+  const stillFollowingContract = (userId: string) => {
+    return contractFollowersIds.includes(userId)
+  }
+
+  const shouldGetNotification = (
+    userId: string,
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    return (
+      sourceUser.id != userId &&
+      !Object.keys(userToReasonTexts).includes(userId)
+    )
+  }
+
+  const notifyContractFollowers = async (
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    for (const userId of contractFollowersIds) {
+      if (shouldGetNotification(userId, userToReasonTexts))
+        userToReasonTexts[userId] = {
+          reason: 'you_follow_contract',
+        }
+    }
+  }
+
+  const notifyContractCreator = async (
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    if (
+      shouldGetNotification(sourceContract.creatorId, userToReasonTexts) &&
+      stillFollowingContract(sourceContract.creatorId)
+    )
+      userToReasonTexts[sourceContract.creatorId] = {
+        reason: 'on_users_contract',
+      }
+  }
+
+  const notifyOtherAnswerersOnContract = async (
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    const answers = await getValues<Answer>(
+      firestore
+        .collection('contracts')
+        .doc(sourceContract.id)
+        .collection('answers')
+    )
+    const recipientUserIds = uniq(answers.map((answer) => answer.userId))
+    recipientUserIds.forEach((userId) => {
+      if (
+        shouldGetNotification(userId, userToReasonTexts) &&
+        stillFollowingContract(userId)
+      )
+        userToReasonTexts[userId] = {
+          reason: 'on_contract_with_users_answer',
+        }
+    })
+  }
+
+  const notifyOtherCommentersOnContract = async (
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    const comments = await getValues<Comment>(
+      firestore
+        .collection('contracts')
+        .doc(sourceContract.id)
+        .collection('comments')
+    )
+    const recipientUserIds = uniq(comments.map((comment) => comment.userId))
+    recipientUserIds.forEach((userId) => {
+      if (
+        shouldGetNotification(userId, userToReasonTexts) &&
+        stillFollowingContract(userId)
+      )
+        userToReasonTexts[userId] = {
+          reason: 'on_contract_with_users_comment',
+        }
+    })
+  }
+
+  const notifyBettorsOnContract = async (
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    const betsSnap = await firestore
+      .collection(`contracts/${sourceContract.id}/bets`)
+      .get()
+    const bets = betsSnap.docs.map((doc) => doc.data() as Bet)
+    // filter bets for only users that have an amount invested still
+    const recipientUserIds = uniq(bets.map((bet) => bet.userId)).filter(
+      (userId) => {
+        return (
+          getContractBetMetrics(
+            sourceContract,
+            bets.filter((bet) => bet.userId === userId)
+          ).invested > 0
+        )
+      }
+    )
+    recipientUserIds.forEach((userId) => {
+      if (
+        shouldGetNotification(userId, userToReasonTexts) &&
+        stillFollowingContract(userId)
+      )
+        userToReasonTexts[userId] = {
+          reason: 'on_contract_with_users_shares_in',
+        }
+    })
+  }
+
+  const notifyRepliedUser = (
+    userToReasonTexts: user_to_reason_texts,
+    relatedUserId: string,
+    relatedSourceType: notification_source_types
+  ) => {
+    if (
+      shouldGetNotification(relatedUserId, userToReasonTexts) &&
+      stillFollowingContract(relatedUserId)
+    ) {
+      if (relatedSourceType === 'comment') {
+        userToReasonTexts[relatedUserId] = {
+          reason: 'reply_to_users_comment',
+        }
+      } else if (relatedSourceType === 'answer') {
+        userToReasonTexts[relatedUserId] = {
+          reason: 'reply_to_users_answer',
+        }
+      }
+    }
+  }
+
+  const notifyTaggedUsers = (
+    userToReasonTexts: user_to_reason_texts,
+    userIds: (string | undefined)[]
+  ) => {
+    userIds.forEach((id) => {
+      console.log('tagged user: ', id)
+      // Allowing non-following users to get tagged
+      if (id && shouldGetNotification(id, userToReasonTexts))
+        userToReasonTexts[id] = {
+          reason: 'tagged_user',
+        }
+    })
+  }
+
+  const notifyLiquidityProviders = async (
+    userToReasonTexts: user_to_reason_texts
+  ) => {
+    const liquidityProviders = await firestore
+      .collection(`contracts/${sourceContract.id}/liquidity`)
+      .get()
+    const liquidityProvidersIds = uniq(
+      liquidityProviders.docs.map((doc) => doc.data().userId)
+    )
+    liquidityProvidersIds.forEach((userId) => {
+      if (
+        shouldGetNotification(userId, userToReasonTexts) &&
+        stillFollowingContract(userId)
+      ) {
+        userToReasonTexts[userId] = {
+          reason: 'on_contract_with_users_shares_in',
+        }
+      }
+    })
+  }
+  const userToReasonTexts: user_to_reason_texts = {}
+
+  if (sourceType === 'comment') {
+    if (repliedUserId && relatedSourceType)
+      notifyRepliedUser(userToReasonTexts, repliedUserId, relatedSourceType)
+    if (sourceText) notifyTaggedUsers(userToReasonTexts, taggedUserIds ?? [])
+  }
+  await notifyContractCreator(userToReasonTexts)
+  await notifyOtherAnswerersOnContract(userToReasonTexts)
+  await notifyLiquidityProviders(userToReasonTexts)
+  await notifyBettorsOnContract(userToReasonTexts)
+  await notifyOtherCommentersOnContract(userToReasonTexts)
+  // if they weren't added previously, add them now
+  await notifyContractFollowers(userToReasonTexts)
+
   await createUsersNotifications(userToReasonTexts)
 }
 
@@ -471,6 +595,32 @@ export const createReferralNotification = async (
   await notificationRef.set(removeUndefinedProps(notification))
 }
 
+export const createLoanIncomeNotification = async (
+  toUser: User,
+  idempotencyKey: string,
+  income: number
+) => {
+  const notificationRef = firestore
+    .collection(`/users/${toUser.id}/notifications`)
+    .doc(idempotencyKey)
+  const notification: Notification = {
+    id: idempotencyKey,
+    userId: toUser.id,
+    reason: 'loan_income',
+    createdTime: Date.now(),
+    isSeen: false,
+    sourceId: idempotencyKey,
+    sourceType: 'loan',
+    sourceUpdateType: 'updated',
+    sourceUserName: toUser.name,
+    sourceUserUsername: toUser.username,
+    sourceUserAvatarUrl: toUser.avatarUrl,
+    sourceText: income.toString(),
+    sourceTitle: 'Loan',
+  }
+  await notificationRef.set(removeUndefinedProps(notification))
+}
+
 const groupPath = (groupSlug: string) => `/group/${groupSlug}`
 
 export const createChallengeAcceptedNotification = async (

functions/src/create-user.ts

@@ -2,15 +2,8 @@ import * as admin from 'firebase-admin'
 import { z } from 'zod'
 import { uniq } from 'lodash'
 
-import {
+import { PrivateUser, User } from '../../common/user'
-  MANIFOLD_AVATAR_URL,
+import { getUser, getUserByUsername, getValues } from './utils'
-  MANIFOLD_USERNAME,
-  PrivateUser,
-  STARTING_BALANCE,
-  SUS_STARTING_BALANCE,
-  User,
-} from '../../common/user'
-import { getUser, getUserByUsername, getValues, isProd } from './utils'
 import { randomString } from '../../common/util/random'
 import {
   cleanDisplayName,
@@ -25,10 +18,7 @@ import {
 import { track } from './analytics'
 import { APIError, newEndpoint, validate } from './api'
 import { Group, NEW_USER_GROUP_SLUGS } from '../../common/group'
-import {
+import { SUS_STARTING_BALANCE, STARTING_BALANCE } from '../../common/economy'
-  DEV_HOUSE_LIQUIDITY_PROVIDER_ID,
-  HOUSE_LIQUIDITY_PROVIDER_ID,
-} from '../../common/antes'
 
 const bodySchema = z.object({
   deviceToken: z.string().optional(),
@@ -75,6 +65,7 @@ export const createuser = newEndpoint(opts, async (req, auth) => {
     createdTime: Date.now(),
     profitCached: { daily: 0, weekly: 0, monthly: 0, allTime: 0 },
     creatorVolumeCached: { daily: 0, weekly: 0, monthly: 0, allTime: 0 },
+    nextLoanCached: 0,
     followerCountCached: 0,
     followedCategories: DEFAULT_CATEGORIES,
     shouldShowWelcome: true,
@@ -144,24 +135,5 @@ const addUserToDefaultGroups = async (user: User) => {
       .update({
         memberIds: uniq(group.memberIds.concat(user.id)),
       })
-    const manifoldAccount = isProd()
-      ? HOUSE_LIQUIDITY_PROVIDER_ID
-      : DEV_HOUSE_LIQUIDITY_PROVIDER_ID
-
-    if (slug === 'welcome') {
-      const welcomeCommentDoc = firestore
-        .collection(`groups/${group.id}/comments`)
-        .doc()
-      await welcomeCommentDoc.create({
-        id: welcomeCommentDoc.id,
-        groupId: group.id,
-        userId: manifoldAccount,
-        text: `Welcome, @${user.username} aka ${user.name}!`,
-        createdTime: Date.now(),
-        userName: 'Manifold Markets',
-        userUsername: MANIFOLD_USERNAME,
-        userAvatarUrl: MANIFOLD_AVATAR_URL,
-      })
-    }
   }
 }

functions/src/email-templates/interesting-markets.html

@@ -444,7 +444,7 @@
                                                                                             style="
                                           color: inherit;
                                           text-decoration: none;
-                                        " target="_blank">click here to unsubscribe</a>.
+                                        " target="_blank">click here to unsubscribe</a> from future recommended markets.
                                                                                     </p>
                                                                                 </div>
                                                                             </td>

functions/src/emails.ts

@@ -53,10 +53,10 @@ export const sendMarketResolutionEmail = async (
 
   const subject = `Resolved ${outcome}: ${contract.question}`
 
-  const creatorPayoutText =
+  // const creatorPayoutText =
-    userId === creator.id
+  //   userId === creator.id
-      ? ` (plus ${formatMoney(creatorPayout)} in commissions)`
+  //     ? ` (plus ${formatMoney(creatorPayout)} in commissions)`
-      : ''
+  //     : ''
 
   const emailType = 'market-resolved'
   const unsubscribeUrl = `${UNSUBSCRIBE_ENDPOINT}?id=${userId}&type=${emailType}`
@@ -68,7 +68,7 @@ export const sendMarketResolutionEmail = async (
     question: contract.question,
     outcome,
     investment: `${Math.floor(investment)}`,
-    payout: `${Math.floor(payout)}${creatorPayoutText}`,
+    payout: `${Math.floor(payout)}`,
     url: `https://${DOMAIN}/${creator.username}/${contract.slug}`,
     unsubscribeUrl,
   }
@@ -116,7 +116,9 @@ const toDisplayResolution = (
   }
 
   if (contract.outcomeType === 'PSEUDO_NUMERIC') {
-    const { resolutionValue } = contract
+    const { resolution, resolutionValue } = contract
+
+    if (resolution === 'CANCEL') return 'N/A'
 
     return resolutionValue
       ? formatLargeNumber(resolutionValue)

functions/src/follow-market.ts

@@ -0,0 +1,36 @@
+import * as admin from 'firebase-admin'
+
+const firestore = admin.firestore()
+
+export const addUserToContractFollowers = async (
+  contractId: string,
+  userId: string
+) => {
+  const followerDoc = await firestore
+    .collection(`contracts/${contractId}/follows`)
+    .doc(userId)
+    .get()
+  if (followerDoc.exists) return
+  await firestore
+    .collection(`contracts/${contractId}/follows`)
+    .doc(userId)
+    .set({
+      id: userId,
+      createdTime: Date.now(),
+    })
+}
+
+export const removeUserFromContractFollowers = async (
+  contractId: string,
+  userId: string
+) => {
+  const followerDoc = await firestore
+    .collection(`contracts/${contractId}/follows`)
+    .doc(userId)
+    .get()
+  if (!followerDoc.exists) return
+  await firestore
+    .collection(`contracts/${contractId}/follows`)
+    .doc(userId)
+    .delete()
+}

functions/src/index.ts

@@ -11,6 +11,7 @@ export * from './on-create-comment-on-contract'
 export * from './on-view'
 export * from './update-metrics'
 export * from './update-stats'
+export * from './update-loans'
 export * from './backup-db'
 export * from './market-close-notifications'
 export * from './on-create-answer'
@@ -28,6 +29,8 @@ export * from './on-delete-group'
 export * from './score-contracts'
 export * from './weekly-markets-emails'
 export * from './reset-betting-streaks'
+export * from './reset-weekly-emails-flag'
+export * from './on-update-contract-follow'
 
 // v2
 export * from './health'

functions/src/on-create-answer.ts

@@ -1,6 +1,6 @@
 import * as functions from 'firebase-functions'
 import { getContract, getUser } from './utils'
-import { createNotification } from './create-notification'
+import { createCommentOrAnswerOrUpdatedContractNotification } from './create-notification'
 import { Answer } from '../../common/answer'
 
 export const onCreateAnswer = functions.firestore
@@ -20,14 +20,13 @@ export const onCreateAnswer = functions.firestore
 
     const answerCreator = await getUser(answer.userId)
     if (!answerCreator) throw new Error('Could not find answer creator')
-
+    await createCommentOrAnswerOrUpdatedContractNotification(
-    await createNotification(
       answer.id,
       'answer',
       'created',
       answerCreator,
       eventId,
       answer.text,
-      { contract }
+      contract
     )
   })

functions/src/on-create-bet.ts

@@ -17,7 +17,7 @@ import {
   BETTING_STREAK_BONUS_MAX,
   BETTING_STREAK_RESET_HOUR,
   UNIQUE_BETTOR_BONUS_AMOUNT,
-} from '../../common/numeric-constants'
+} from '../../common/economy'
 import {
   DEV_HOUSE_LIQUIDITY_PROVIDER_ID,
   HOUSE_LIQUIDITY_PROVIDER_ID,

functions/src/on-create-comment-on-contract.ts

@@ -6,8 +6,9 @@ import { ContractComment } from '../../common/comment'
 import { sendNewCommentEmail } from './emails'
 import { Bet } from '../../common/bet'
 import { Answer } from '../../common/answer'
-import { createNotification } from './create-notification'
+import { createCommentOrAnswerOrUpdatedContractNotification } from './create-notification'
 import { parseMentions, richTextToString } from '../../common/util/parse'
+import { addUserToContractFollowers } from './follow-market'
 
 const firestore = admin.firestore()
 
@@ -35,6 +36,8 @@ export const onCreateCommentOnContract = functions
     const commentCreator = await getUser(comment.userId)
     if (!commentCreator) throw new Error('Could not find comment creator')
 
+    await addUserToContractFollowers(contract.id, commentCreator.id)
+
     await firestore
       .collection('contracts')
       .doc(contract.id)
@@ -77,18 +80,19 @@ export const onCreateCommentOnContract = functions
       ? comments.find((c) => c.id === comment.replyToCommentId)?.userId
       : answer?.userId
 
-    const recipients = uniq(
+    await createCommentOrAnswerOrUpdatedContractNotification(
-      compact([...parseMentions(comment.content), repliedUserId])
-    )
-
-    await createNotification(
       comment.id,
       'comment',
       'created',
       commentCreator,
       eventId,
       richTextToString(comment.content),
-      { contract, relatedSourceType, recipients }
+      contract,
+      {
+        relatedSourceType,
+        repliedUserId,
+        taggedUserIds: compact(parseMentions(comment.content)),
+      }
     )
 
     const recipientUserIds = uniq([

functions/src/on-create-contract.ts

@@ -5,6 +5,7 @@ import { createNotification } from './create-notification'
 import { Contract } from '../../common/contract'
 import { parseMentions, richTextToString } from '../../common/util/parse'
 import { JSONContent } from '@tiptap/core'
+import { addUserToContractFollowers } from './follow-market'
 
 export const onCreateContract = functions
   .runWith({ secrets: ['MAILGUN_KEY'] })
@@ -18,6 +19,7 @@ export const onCreateContract = functions
 
     const desc = contract.description as JSONContent
     const mentioned = parseMentions(desc)
+    await addUserToContractFollowers(contract.id, contractCreator.id)
 
     await createNotification(
       contract.id,

functions/src/on-create-liquidity-provision.ts

@@ -1,7 +1,13 @@
 import * as functions from 'firebase-functions'
-import { getContract, getUser } from './utils'
+import { getContract, getUser, log } from './utils'
 import { createNotification } from './create-notification'
-import { LiquidityProvision } from 'common/liquidity-provision'
+import { LiquidityProvision } from '../../common/liquidity-provision'
+import { addUserToContractFollowers } from './follow-market'
+import { FIXED_ANTE } from '../../common/economy'
+import {
+  DEV_HOUSE_LIQUIDITY_PROVIDER_ID,
+  HOUSE_LIQUIDITY_PROVIDER_ID,
+} from '../../common/antes'
 
 export const onCreateLiquidityProvision = functions.firestore
   .document('contracts/{contractId}/liquidity/{liquidityId}')
@@ -10,7 +16,14 @@ export const onCreateLiquidityProvision = functions.firestore
     const { eventId } = context
 
     // Ignore Manifold Markets liquidity for now - users see a notification for free market liquidity provision
-    if (liquidity.userId === 'IPTOzEqrpkWmEzh6hwvAyY9PqFb2') return
+    if (
+      (liquidity.userId === HOUSE_LIQUIDITY_PROVIDER_ID ||
+        liquidity.userId === DEV_HOUSE_LIQUIDITY_PROVIDER_ID) &&
+      liquidity.amount === FIXED_ANTE
+    )
+      return
+
+    log(`onCreateLiquidityProvision: ${JSON.stringify(liquidity)}`)
 
     const contract = await getContract(liquidity.contractId)
     if (!contract)
@@ -18,6 +31,7 @@ export const onCreateLiquidityProvision = functions.firestore
 
     const liquidityProvider = await getUser(liquidity.userId)
     if (!liquidityProvider) throw new Error('Could not find liquidity provider')
+    await addUserToContractFollowers(contract.id, liquidityProvider.id)
 
     await createNotification(
       contract.id,

functions/src/on-update-contract-follow.ts

@@ -0,0 +1,45 @@
+import * as functions from 'firebase-functions'
+import * as admin from 'firebase-admin'
+import { FieldValue } from 'firebase-admin/firestore'
+
+export const onDeleteContractFollow = functions.firestore
+  .document('contracts/{contractId}/follows/{userId}')
+  .onDelete(async (change, context) => {
+    const { contractId } = context.params as {
+      contractId: string
+    }
+    const firestore = admin.firestore()
+    const contract = await firestore
+      .collection(`contracts`)
+      .doc(contractId)
+      .get()
+    if (!contract.exists) throw new Error('Could not find contract')
+
+    await firestore
+      .collection(`contracts`)
+      .doc(contractId)
+      .update({
+        followerCount: FieldValue.increment(-1),
+      })
+  })
+
+export const onCreateContractFollow = functions.firestore
+  .document('contracts/{contractId}/follows/{userId}')
+  .onCreate(async (change, context) => {
+    const { contractId } = context.params as {
+      contractId: string
+    }
+    const firestore = admin.firestore()
+    const contract = await firestore
+      .collection(`contracts`)
+      .doc(contractId)
+      .get()
+    if (!contract.exists) throw new Error('Could not find contract')
+
+    await firestore
+      .collection(`contracts`)
+      .doc(contractId)
+      .update({
+        followerCount: FieldValue.increment(1),
+      })
+  })

functions/src/on-update-contract.ts

@@ -1,6 +1,6 @@
 import * as functions from 'firebase-functions'
 import { getUser } from './utils'
-import { createNotification } from './create-notification'
+import { createCommentOrAnswerOrUpdatedContractNotification } from './create-notification'
 import { Contract } from '../../common/contract'
 
 export const onUpdateContract = functions.firestore
@@ -29,40 +29,37 @@ export const onUpdateContract = functions.firestore
           resolutionText = `${contract.resolutionValue}`
       }
 
-      await createNotification(
+      await createCommentOrAnswerOrUpdatedContractNotification(
         contract.id,
         'contract',
         'resolved',
         contractUpdater,
         eventId,
         resolutionText,
-        { contract }
+        contract
       )
     } else if (
       previousValue.closeTime !== contract.closeTime ||
-      previousValue.description !== contract.description
+      previousValue.question !== contract.question
     ) {
       let sourceText = ''
-      if (previousValue.closeTime !== contract.closeTime && contract.closeTime)
+      if (
+        previousValue.closeTime !== contract.closeTime &&
+        contract.closeTime
+      ) {
         sourceText = contract.closeTime.toString()
-      else {
+      } else if (previousValue.question !== contract.question) {
-        const oldTrimmedDescription = previousValue.description.trim()
+        sourceText = contract.question
-        const newTrimmedDescription = contract.description.trim()
-        if (oldTrimmedDescription === '') sourceText = newTrimmedDescription
-        else
-          sourceText = newTrimmedDescription
-            .split(oldTrimmedDescription)[1]
-            .trim()
       }
 
-      await createNotification(
+      await createCommentOrAnswerOrUpdatedContractNotification(
         contract.id,
         'contract',
         'updated',
         contractUpdater,
         eventId,
         sourceText,
-        { contract }
+        contract
       )
     }
   })

functions/src/on-update-user.ts

@@ -1,13 +1,14 @@
 import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
-import { REFERRAL_AMOUNT, User } from '../../common/user'
+import { User } from '../../common/user'
 import { HOUSE_LIQUIDITY_PROVIDER_ID } from '../../common/antes'
 import { createReferralNotification } from './create-notification'
 import { ReferralTxn } from '../../common/txn'
 import { Contract } from '../../common/contract'
-import { LimitBet } from 'common/bet'
+import { LimitBet } from '../../common/bet'
 import { QuerySnapshot } from 'firebase-admin/firestore'
-import { Group } from 'common/group'
+import { Group } from '../../common/group'
+import { REFERRAL_AMOUNT } from '../../common/economy'
 const firestore = admin.firestore()
 
 export const onUpdateUser = functions.firestore

functions/src/place-bet.ts

@@ -22,6 +22,7 @@ import { LimitBet } from '../../common/bet'
 import { floatingEqual } from '../../common/util/math'
 import { redeemShares } from './redeem-shares'
 import { log } from './utils'
+import { addUserToContractFollowers } from './follow-market'
 
 const bodySchema = z.object({
   contractId: z.string(),
@@ -59,7 +60,6 @@ export const placebet = newEndpoint({}, async (req, auth) => {
     const user = userSnap.data() as User
     if (user.balance < amount) throw new APIError(400, 'Insufficient balance.')
 
-    const loanAmount = 0
     const { closeTime, outcomeType, mechanism, collectedFees, volume } =
       contract
     if (closeTime && Date.now() > closeTime)
@@ -119,7 +119,7 @@ export const placebet = newEndpoint({}, async (req, auth) => {
         const answerDoc = contractDoc.collection('answers').doc(outcome)
         const answerSnap = await trans.get(answerDoc)
         if (!answerSnap.exists) throw new APIError(400, 'Invalid answer')
-        return getNewMultiBetInfo(outcome, amount, contract, loanAmount)
+        return getNewMultiBetInfo(outcome, amount, contract)
       } else if (outcomeType == 'NUMERIC' && mechanism == 'dpm-2') {
         const { outcome, value } = validate(numericSchema, req.body)
         return getNumericBetsInfo(value, outcome, amount, contract)
@@ -168,6 +168,8 @@ export const placebet = newEndpoint({}, async (req, auth) => {
     return { betId: betDoc.id, makers, newBet }
   })
 
+  await addUserToContractFollowers(contractId, auth.uid)
+
   log('Main transaction finished.')
 
   if (result.newBet.amount !== 0) {

functions/src/reset-betting-streaks.ts

@@ -4,12 +4,12 @@ import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
 import { User } from '../../common/user'
 import { DAY_MS } from '../../common/util/time'
-import { BETTING_STREAK_RESET_HOUR } from '../../common/numeric-constants'
+import { BETTING_STREAK_RESET_HOUR } from '../../common/economy'
 const firestore = admin.firestore()
 
 export const resetBettingStreaksForUsers = functions.pubsub
   .schedule(`0 ${BETTING_STREAK_RESET_HOUR} * * *`)
-  .timeZone('utc')
+  .timeZone('Etc/UTC')
   .onRun(async () => {
     await resetBettingStreaksInternal()
   })

functions/src/reset-weekly-emails-flag.ts

@@ -0,0 +1,24 @@
+import * as functions from 'firebase-functions'
+import * as admin from 'firebase-admin'
+import { getAllPrivateUsers } from './utils'
+
+export const resetWeeklyEmailsFlag = functions
+  .runWith({ secrets: ['MAILGUN_KEY'] })
+  // every Monday at 12 am PT (UTC -07:00) ( 12 hours before the emails will be sent)
+  .pubsub.schedule('0 7 * * 1')
+  .timeZone('Etc/UTC')
+  .onRun(async () => {
+    const privateUsers = await getAllPrivateUsers()
+    // get all users that haven't unsubscribed from weekly emails
+    const privateUsersToSendEmailsTo = privateUsers.filter((user) => {
+      return !user.unsubscribedFromWeeklyTrendingEmails
+    })
+    const firestore = admin.firestore()
+    await Promise.all(
+      privateUsersToSendEmailsTo.map(async (user) => {
+        return firestore.collection('private-users').doc(user.id).update({
+          weeklyTrendingEmailSent: false,
+        })
+      })
+    )
+  })

functions/src/scripts/backfill-contract-followers.ts

@@ -0,0 +1,75 @@
+import * as admin from 'firebase-admin'
+
+import { initAdmin } from './script-init'
+initAdmin()
+
+import { getValues } from '../utils'
+import { Contract } from 'common/lib/contract'
+import { Comment } from 'common/lib/comment'
+import { uniq } from 'lodash'
+import { Bet } from 'common/lib/bet'
+import {
+  DEV_HOUSE_LIQUIDITY_PROVIDER_ID,
+  HOUSE_LIQUIDITY_PROVIDER_ID,
+} from 'common/lib/antes'
+
+const firestore = admin.firestore()
+
+async function backfillContractFollowers() {
+  console.log('Backfilling contract followers')
+  const contracts = await getValues<Contract>(
+    firestore.collection('contracts').where('isResolved', '==', false)
+  )
+  let count = 0
+  for (const contract of contracts) {
+    const comments = await getValues<Comment>(
+      firestore.collection('contracts').doc(contract.id).collection('comments')
+    )
+    const commenterIds = uniq(comments.map((comment) => comment.userId))
+    const betsSnap = await firestore
+      .collection(`contracts/${contract.id}/bets`)
+      .get()
+    const bets = betsSnap.docs.map((doc) => doc.data() as Bet)
+    // filter bets for only users that have an amount invested still
+    const bettorIds = uniq(bets.map((bet) => bet.userId))
+    const liquidityProviders = await firestore
+      .collection(`contracts/${contract.id}/liquidity`)
+      .get()
+    const liquidityProvidersIds = uniq(
+      liquidityProviders.docs.map((doc) => doc.data().userId)
+      // exclude free market liquidity provider
+    ).filter(
+      (id) =>
+        id !== HOUSE_LIQUIDITY_PROVIDER_ID ||
+        id !== DEV_HOUSE_LIQUIDITY_PROVIDER_ID
+    )
+    const followerIds = uniq([
+      ...commenterIds,
+      ...bettorIds,
+      ...liquidityProvidersIds,
+      contract.creatorId,
+    ])
+    for (const followerId of followerIds) {
+      await firestore
+        .collection(`contracts/${contract.id}/follows`)
+        .doc(followerId)
+        .set({ id: followerId, createdTime: Date.now() })
+    }
+    // Perhaps handled by the trigger?
+    // const followerCount = followerIds.length
+    // await firestore
+    //   .collection(`contracts`)
+    //   .doc(contract.id)
+    //   .update({ followerCount: followerCount })
+    count += 1
+    if (count % 100 === 0) {
+      console.log(`${count} contracts processed`)
+    }
+  }
+}
+
+if (require.main === module) {
+  backfillContractFollowers()
+    .then(() => process.exit())
+    .catch(console.log)
+}

functions/src/scripts/create-private-users.ts

@@ -3,7 +3,8 @@ import * as admin from 'firebase-admin'
 import { initAdmin } from './script-init'
 initAdmin()
 
-import { PrivateUser, STARTING_BALANCE, User } from '../../../common/user'
+import { PrivateUser, User } from 'common/user'
+import { STARTING_BALANCE } from 'common/economy'
 
 const firestore = admin.firestore()
 

functions/src/sell-bet.ts

@@ -50,11 +50,12 @@ export const sellbet = newEndpoint({}, async (req, auth) => {
 
     /* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */
     const saleAmount = newBet.sale!.amount
-    const newBalance = user.balance + saleAmount - (bet.loanAmount ?? 0)
+    const newBalance = user.balance + saleAmount + (newBet.loanAmount ?? 0)
     const newBetDoc = firestore.collection(`contracts/${contractId}/bets`).doc()
 
     transaction.update(userDoc, { balance: newBalance })
     transaction.update(betDoc, { isSold: true })
+    // Note: id should have been newBetDoc.id! But leaving it for now so it's consistent.
     transaction.create(newBetDoc, { id: betDoc.id, userId: user.id, ...newBet })
     transaction.update(
       contractDoc,

functions/src/sell-shares.ts

@@ -7,12 +7,13 @@ import { Contract, CPMM_MIN_POOL_QTY } from '../../common/contract'
 import { User } from '../../common/user'
 import { getCpmmSellBetInfo } from '../../common/sell-bet'
 import { addObjects, removeUndefinedProps } from '../../common/util/object'
-import { getValues, log } from './utils'
+import { log } from './utils'
 import { Bet } from '../../common/bet'
 import { floatingEqual, floatingLesserEqual } from '../../common/util/math'
 import { getUnfilledBetsQuery, updateMakers } from './place-bet'
 import { FieldValue } from 'firebase-admin/firestore'
 import { redeemShares } from './redeem-shares'
+import { removeUserFromContractFollowers } from './follow-market'
 
 const bodySchema = z.object({
   contractId: z.string(),
@@ -28,12 +29,16 @@ export const sellshares = newEndpoint({}, async (req, auth) => {
     const contractDoc = firestore.doc(`contracts/${contractId}`)
     const userDoc = firestore.doc(`users/${auth.uid}`)
     const betsQ = contractDoc.collection('bets').where('userId', '==', auth.uid)
-    const [[contractSnap, userSnap], userBets] = await Promise.all([
+    const [[contractSnap, userSnap], userBetsSnap, unfilledBetsSnap] =
+      await Promise.all([
         transaction.getAll(contractDoc, userDoc),
-      getValues<Bet>(betsQ), // TODO: why is this not in the transaction??
+        transaction.get(betsQ),
+        transaction.get(getUnfilledBetsQuery(contractDoc)),
       ])
     if (!contractSnap.exists) throw new APIError(400, 'Contract not found.')
     if (!userSnap.exists) throw new APIError(400, 'User not found.')
+    const userBets = userBetsSnap.docs.map((doc) => doc.data() as Bet)
+    const unfilledBets = unfilledBetsSnap.docs.map((doc) => doc.data())
 
     const contract = contractSnap.data() as Contract
     const user = userSnap.data() as User
@@ -45,7 +50,7 @@ export const sellshares = newEndpoint({}, async (req, auth) => {
     if (closeTime && Date.now() > closeTime)
       throw new APIError(400, 'Trading is closed.')
 
-    const prevLoanAmount = sumBy(userBets, (bet) => bet.loanAmount ?? 0)
+    const loanAmount = sumBy(userBets, (bet) => bet.loanAmount ?? 0)
     const betsByOutcome = groupBy(userBets, (bet) => bet.outcome)
     const sharesByOutcome = mapValues(betsByOutcome, (bets) =>
       sumBy(bets, (b) => b.shares)
@@ -77,18 +82,16 @@ export const sellshares = newEndpoint({}, async (req, auth) => {
       throw new APIError(400, `You can only sell up to ${maxShares} shares.`)
 
     const soldShares = Math.min(sharesToSell, maxShares)
-
+    const saleFrac = soldShares / maxShares
-    const unfilledBetsSnap = await transaction.get(
+    let loanPaid = saleFrac * loanAmount
-      getUnfilledBetsQuery(contractDoc)
+    if (!isFinite(loanPaid)) loanPaid = 0
-    )
-    const unfilledBets = unfilledBetsSnap.docs.map((doc) => doc.data())
 
     const { newBet, newPool, newP, fees, makers } = getCpmmSellBetInfo(
       soldShares,
       chosenOutcome,
       contract,
-      prevLoanAmount,
+      unfilledBets,
-      unfilledBets
+      loanPaid
     )
 
     if (
@@ -104,7 +107,7 @@ export const sellshares = newEndpoint({}, async (req, auth) => {
     updateMakers(makers, newBetDoc.id, contractDoc, transaction)
 
     transaction.update(userDoc, {
-      balance: FieldValue.increment(-newBet.amount),
+      balance: FieldValue.increment(-newBet.amount + (newBet.loanAmount ?? 0)),
     })
     transaction.create(newBetDoc, {
       id: newBetDoc.id,
@@ -121,9 +124,12 @@ export const sellshares = newEndpoint({}, async (req, auth) => {
       })
     )
 
-    return { newBet, makers }
+    return { newBet, makers, maxShares, soldShares }
   })
 
+  if (result.maxShares === result.soldShares) {
+    await removeUserFromContractFollowers(contractId, auth.uid)
+  }
   const userIds = uniq(result.makers.map((maker) => maker.bet.userId))
   await Promise.all(userIds.map((userId) => redeemShares(userId, contractId)))
   log('Share redemption transaction finished.')

functions/src/unsubscribe.ts

@@ -69,6 +69,10 @@ export const unsubscribe: EndpointDefinition = {
       res.send(
         `${name}, you have been unsubscribed from market answer emails on Manifold Markets.`
       )
+    else if (type === 'weekly-trending')
+      res.send(
+        `${name}, you have been unsubscribed from weekly trending emails on Manifold Markets.`
+      )
     else res.send(`${name}, you have been unsubscribed.`)
   },
 }

functions/src/update-loans.ts

@@ -0,0 +1,92 @@
+import * as functions from 'firebase-functions'
+import * as admin from 'firebase-admin'
+import { groupBy, keyBy } from 'lodash'
+import { getValues, log, payUser, writeAsync } from './utils'
+import { Bet } from '../../common/bet'
+import { Contract } from '../../common/contract'
+import { PortfolioMetrics, User } from '../../common/user'
+import { getLoanUpdates } from '../../common/loans'
+import { createLoanIncomeNotification } from './create-notification'
+
+const firestore = admin.firestore()
+
+export const updateLoans = functions
+  .runWith({ memory: '2GB', timeoutSeconds: 540 })
+  // Run every day at midnight.
+  .pubsub.schedule('0 0 * * *')
+  .timeZone('America/Los_Angeles')
+  .onRun(updateLoansCore)
+
+async function updateLoansCore() {
+  log('Updating loans...')
+
+  const [users, contracts, bets] = await Promise.all([
+    getValues<User>(firestore.collection('users')),
+    getValues<Contract>(
+      firestore.collection('contracts').where('isResolved', '==', false)
+    ),
+    getValues<Bet>(firestore.collectionGroup('bets')),
+  ])
+  log(
+    `Loaded ${users.length} users, ${contracts.length} contracts, and ${bets.length} bets.`
+  )
+  const userPortfolios = await Promise.all(
+    users.map(async (user) => {
+      const portfolio = await getValues<PortfolioMetrics>(
+        firestore
+          .collection(`users/${user.id}/portfolioHistory`)
+          .orderBy('timestamp', 'desc')
+          .limit(1)
+      )
+      return portfolio[0]
+    })
+  )
+  log(`Loaded ${userPortfolios.length} portfolios`)
+  const portfolioByUser = keyBy(userPortfolios, (portfolio) => portfolio.userId)
+
+  const contractsById = Object.fromEntries(
+    contracts.map((contract) => [contract.id, contract])
+  )
+  const betsByUser = groupBy(bets, (bet) => bet.userId)
+  const { betUpdates, userPayouts } = getLoanUpdates(
+    users,
+    contractsById,
+    portfolioByUser,
+    betsByUser
+  )
+
+  log(`${betUpdates.length} bet updates.`)
+
+  const betDocUpdates = betUpdates.map((update) => ({
+    doc: firestore
+      .collection('contracts')
+      .doc(update.contractId)
+      .collection('bets')
+      .doc(update.betId),
+    fields: {
+      loanAmount: update.loanTotal,
+    },
+  }))
+
+  await writeAsync(firestore, betDocUpdates)
+
+  log(`${userPayouts.length} user payouts`)
+
+  await Promise.all(
+    userPayouts.map(({ user, payout }) => payUser(user.id, payout))
+  )
+
+  const today = new Date().toDateString().replace(' ', '-')
+  const key = `loan-notifications-${today}`
+  await Promise.all(
+    userPayouts
+      // Don't send a notification if the payout is < M$1,
+      // because a M$0 loan is confusing.
+      .filter(({ payout }) => payout >= 1)
+      .map(({ user, payout }) =>
+        createLoanIncomeNotification(user, key, payout)
+      )
+  )
+
+  log('Notifications sent!')
+}

functions/src/update-metrics.ts

@@ -1,6 +1,6 @@
 import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
-import { groupBy, isEmpty, sum, sumBy } from 'lodash'
+import { groupBy, isEmpty, keyBy, sum, sumBy } from 'lodash'
 import { getValues, log, logMemory, writeAsync } from './utils'
 import { Bet } from '../../common/bet'
 import { Contract } from '../../common/contract'
@@ -8,6 +8,7 @@ import { PortfolioMetrics, User } from '../../common/user'
 import { calculatePayout } from '../../common/calculate'
 import { DAY_MS } from '../../common/util/time'
 import { last } from 'lodash'
+import { getLoanUpdates } from '../../common/loans'
 
 const firestore = admin.firestore()
 
@@ -21,7 +22,9 @@ const computeInvestmentValue = (
     if (bet.sale || bet.isSold) return 0
 
     const payout = calculatePayout(contract, bet, 'MKT')
-    return payout - (bet.loanAmount ?? 0)
+    const value = payout - (bet.loanAmount ?? 0)
+    if (isNaN(value)) return 0
+    return value
   })
 }
 
@@ -71,7 +74,8 @@ export const updateMetricsCore = async () => {
   const contractsByUser = groupBy(contracts, (contract) => contract.creatorId)
   const betsByUser = groupBy(bets, (bet) => bet.userId)
   const portfolioHistoryByUser = groupBy(allPortfolioHistories, (p) => p.userId)
-  const userUpdates = users.map((user) => {
+
+  const userMetrics = users.map((user) => {
     const currentBets = betsByUser[user.id] ?? []
     const portfolioHistory = portfolioHistoryByUser[user.id] ?? []
     const userContracts = contractsByUser[user.id] ?? []
@@ -93,7 +97,29 @@ export const updateMetricsCore = async () => {
       newPortfolio,
       didProfitChange
     )
+    return {
+      user,
+      newCreatorVolume,
+      newPortfolio,
+      newProfit,
+      didProfitChange,
+    }
+  })
 
+  const portfolioByUser = Object.fromEntries(
+    userMetrics.map(({ user, newPortfolio }) => [user.id, newPortfolio])
+  )
+  const { userPayouts } = getLoanUpdates(
+    users,
+    contractsById,
+    portfolioByUser,
+    betsByUser
+  )
+  const nextLoanByUser = keyBy(userPayouts, (payout) => payout.user.id)
+
+  const userUpdates = userMetrics.map(
+    ({ user, newCreatorVolume, newPortfolio, newProfit, didProfitChange }) => {
+      const nextLoanCached = nextLoanByUser[user.id]?.payout ?? 0
       return {
         fieldUpdates: {
           doc: firestore.collection('users').doc(user.id),
@@ -102,6 +128,7 @@ export const updateMetricsCore = async () => {
             ...(didProfitChange && {
               profitCached: newProfit,
             }),
+            nextLoanCached,
           },
         },
 
@@ -118,7 +145,8 @@ export const updateMetricsCore = async () => {
           },
         },
       }
-  })
+    }
+  )
   await writeAsync(
     firestore,
     userUpdates.map((u) => u.fieldUpdates)
@@ -234,6 +262,6 @@ const calculateNewProfit = (
 }
 
 export const updateMetrics = functions
-  .runWith({ memory: '1GB', timeoutSeconds: 540 })
+  .runWith({ memory: '2GB', timeoutSeconds: 540 })
   .pubsub.schedule('every 15 minutes')
   .onRun(updateMetricsCore)

functions/src/update-stats.ts

@@ -311,6 +311,6 @@ export const updateStatsCore = async () => {
 }
 
 export const updateStats = functions
-  .runWith({ memory: '1GB', timeoutSeconds: 540 })
+  .runWith({ memory: '2GB', timeoutSeconds: 540 })
   .pubsub.schedule('every 60 minutes')
   .onRun(updateStatsCore)

functions/src/weekly-markets-emails.ts

@@ -9,9 +9,9 @@ import { DAY_MS } from '../../common/util/time'
 
 export const weeklyMarketsEmails = functions
   .runWith({ secrets: ['MAILGUN_KEY'] })
-  // every Monday at 12pm PT (UTC -07:00)
+  // every minute on Monday for an hour at 12pm PT (UTC -07:00)
-  .pubsub.schedule('0 19 * * 1')
+  .pubsub.schedule('* 19 * * 1')
-  .timeZone('utc')
+  .timeZone('Etc/UTC')
   .onRun(async () => {
     await sendTrendingMarketsEmailsToAllUsers()
   })
@@ -37,17 +37,33 @@ async function sendTrendingMarketsEmailsToAllUsers() {
   const privateUsers = await getAllPrivateUsers()
   // get all users that haven't unsubscribed from weekly emails
   const privateUsersToSendEmailsTo = privateUsers.filter((user) => {
-    return !user.unsubscribedFromWeeklyTrendingEmails
+    return (
+      !user.unsubscribedFromWeeklyTrendingEmails &&
+      !user.weeklyTrendingEmailSent
+    )
   })
+  log(
+    'Sending weekly trending emails to',
+    privateUsersToSendEmailsTo.length,
+    'users'
+  )
   const trendingContracts = (await getTrendingContracts())
     .filter(
       (contract) =>
         !(
           contract.question.toLowerCase().includes('trump') &&
           contract.question.toLowerCase().includes('president')
-        ) && (contract?.closeTime ?? 0) > Date.now() + DAY_MS
+        ) &&
+        (contract?.closeTime ?? 0) > Date.now() + DAY_MS &&
+        !contract.groupSlugs?.includes('manifold-features') &&
+        !contract.groupSlugs?.includes('manifold-6748e065087e')
     )
     .slice(0, 20)
+  log(
+    `Found ${trendingContracts.length} trending contracts:\n`,
+    trendingContracts.map((c) => c.question).join('\n ')
+  )
+
   for (const privateUser of privateUsersToSendEmailsTo) {
     if (!privateUser.email) {
       log(`No email for ${privateUser.username}`)
@@ -70,12 +86,17 @@ async function sendTrendingMarketsEmailsToAllUsers() {
     if (!user) continue
 
     await sendInterestingMarketsEmail(user, privateUser, contractsToSend)
+    await firestore.collection('private-users').doc(user.id).update({
+      weeklyTrendingEmailSent: true,
+    })
   }
 }
 
-function chooseRandomSubset(contracts: Contract[], count: number) {
 const fiveMinutes = 5 * 60 * 1000
 const seed = Math.round(Date.now() / fiveMinutes).toString()
-  shuffle(contracts, createRNG(seed))
+const rng = createRNG(seed)
+
+function chooseRandomSubset(contracts: Contract[], count: number) {
+  shuffle(contracts, rng)
   return contracts.slice(0, count)
 }

web/components/NotificationSettings.tsx

@@ -9,6 +9,8 @@ import { Row } from 'web/components/layout/row'
 import clsx from 'clsx'
 import { CheckIcon, XIcon } from '@heroicons/react/outline'
 import { ChoicesToggleGroup } from 'web/components/choices-toggle-group'
+import { Col } from 'web/components/layout/col'
+import { FollowMarketModal } from 'web/components/contract/follow-market-modal'
 
 export function NotificationSettings() {
   const user = useUser()
@@ -17,6 +19,7 @@ export function NotificationSettings() {
   const [emailNotificationSettings, setEmailNotificationSettings] =
     useState<notification_subscribe_types>('all')
   const [privateUser, setPrivateUser] = useState<PrivateUser | null>(null)
+  const [showModal, setShowModal] = useState(false)
 
   useEffect(() => {
     if (user) listenForPrivateUser(user.id, setPrivateUser)
@@ -121,12 +124,20 @@ export function NotificationSettings() {
   }
 
   function NotificationSettingLine(props: {
-    label: string
+    label: string | React.ReactNode
     highlight: boolean
+    onClick?: () => void
   }) {
-    const { label, highlight } = props
+    const { label, highlight, onClick } = props
     return (
-      <Row className={clsx('my-1 text-gray-300', highlight && '!text-black')}>
+      <Row
+        className={clsx(
+          'my-1 gap-1 text-gray-300',
+          highlight && '!text-black',
+          onClick ? 'cursor-pointer' : ''
+        )}
+        onClick={onClick}
+      >
         {highlight ? <CheckIcon height={20} /> : <XIcon height={20} />}
         {label}
       </Row>
@@ -148,31 +159,45 @@ export function NotificationSettings() {
         toggleClassName={'w-24'}
       />
       <div className={'mt-4 text-sm'}>
-        <div>
+        <Col className={''}>
-          <div className={''}>
+          <Row className={'my-1'}>
-            You will receive notifications for:
+            You will receive notifications for these general events:
-            <NotificationSettingLine
+          </Row>
-              label={"Resolution of questions you've interacted with"}
-              highlight={notificationSettings !== 'none'}
-            />
-            <NotificationSettingLine
-              highlight={notificationSettings !== 'none'}
-              label={'Activity on your own questions, comments, & answers'}
-            />
-            <NotificationSettingLine
-              highlight={notificationSettings !== 'none'}
-              label={"Activity on questions you're betting on"}
-            />
           <NotificationSettingLine
             highlight={notificationSettings !== 'none'}
             label={"Income & referral bonuses you've received"}
           />
+          <Row className={'my-1'}>
+            You will receive new comment, answer, & resolution notifications on
+            questions:
+          </Row>
           <NotificationSettingLine
-              label={"Activity on questions you've ever bet or commented on"}
+            highlight={notificationSettings !== 'none'}
-              highlight={notificationSettings === 'all'}
+            label={
+              <span>
+                That <span className={'font-bold'}>you watch </span>- you
+                auto-watch questions if:
+              </span>
+            }
+            onClick={() => setShowModal(true)}
           />
-          </div>
+          <Col
-        </div>
+            className={clsx(
+              'mb-2 ml-8',
+              'gap-1 text-gray-300',
+              notificationSettings !== 'none' && '!text-black'
+            )}
+          >
+            <Row>• You create it</Row>
+            <Row>• You bet, comment on, or answer it</Row>
+            <Row>• You add liquidity to it</Row>
+            <Row>
+              • If you select 'Less' and you've commented on or answered a
+              question, you'll only receive notification on direct replies to
+              your comments or answers
+            </Row>
+          </Col>
+        </Col>
       </div>
       <div className={'mt-4'}>Email Notifications</div>
       <ChoicesToggleGroup
@@ -205,6 +230,7 @@ export function NotificationSettings() {
           />
         </div>
       </div>
+      <FollowMarketModal setOpen={setShowModal} open={showModal} />
     </div>
   )
 }

web/components/amount-input.tsx

@@ -5,6 +5,7 @@ import { formatMoney } from 'common/util/format'
 import { Col } from './layout/col'
 import { SiteLink } from './site-link'
 import { ENV_CONFIG } from 'common/envs/constants'
+import { useWindowSize } from 'web/hooks/use-window-size'
 
 export function AmountInput(props: {
   amount: number | undefined
@@ -33,7 +34,8 @@ export function AmountInput(props: {
     const isInvalid = !str || isNaN(amount)
     onChange(isInvalid ? undefined : amount)
   }
-
+  const { width } = useWindowSize()
+  const isMobile = (width ?? 0) < 768
   return (
     <Col className={className}>
       <label className="input-group mb-4">
@@ -50,6 +52,7 @@ export function AmountInput(props: {
           inputMode="numeric"
           placeholder="0"
           maxLength={6}
+          autoFocus={!isMobile}
           value={amount ?? ''}
           disabled={disabled}
           onChange={(e) => onAmountChange(e.target.value)}

web/components/bet-button.tsx

@@ -8,6 +8,8 @@ import { useUser } from 'web/hooks/use-user'
 import { useUserContractBets } from 'web/hooks/use-user-bets'
 import { useSaveBinaryShares } from './use-save-binary-shares'
 import { Col } from './layout/col'
+import { Button } from 'web/components/button'
+import { firebaseLogin } from 'web/lib/firebase/users'
 
 /** Button that opens BetPanel in a new modal */
 export default function BetButton(props: {
@@ -30,23 +32,27 @@ export default function BetButton(props: {
   return (
     <>
       <Col className={clsx('items-center', className)}>
-        <button
+        <Button
-          className={clsx(
+          size={'lg'}
-            'btn btn-lg btn-outline my-auto inline-flex h-10 min-h-0 w-24',
+          className={clsx('my-auto inline-flex min-w-[75px] ', btnClassName)}
-            btnClassName
+          onClick={() => {
-          )}
+            !user ? firebaseLogin() : setOpen(true)
-          onClick={() => setOpen(true)}
+          }}
         >
-          Bet
+          {user ? 'Bet' : 'Sign up to Bet'}
-        </button>
+        </Button>
 
+        {user && (
           <div className={'mt-1 w-24 text-center text-sm text-gray-500'}>
             {hasYesShares
-            ? `(${Math.floor(yesShares)} ${isPseudoNumeric ? 'HIGHER' : 'YES'})`
+              ? `(${Math.floor(yesShares)} ${
+                  isPseudoNumeric ? 'HIGHER' : 'YES'
+                })`
               : hasNoShares
               ? `(${Math.floor(noShares)} ${isPseudoNumeric ? 'LOWER' : 'NO'})`
               : ''}
           </div>
+        )}
       </Col>
 
       <Modal open={open} setOpen={setOpen}>

web/components/bet-inline.tsx

@@ -22,7 +22,7 @@ import { formatMoney } from 'common/util/format'
 export function BetInline(props: {
   contract: CPMMBinaryContract | PseudoNumericContract
   className?: string
-  setProbAfter: (probAfter: number) => void
+  setProbAfter: (probAfter: number | undefined) => void
   onClose: () => void
 }) {
   const { contract, className, setProbAfter, onClose } = props
@@ -82,7 +82,7 @@ export function BetInline(props: {
         <div className="text-xl">Bet</div>
         <YesNoSelector
           className="space-x-0"
-          btnClassName="rounded-none first:rounded-l-2xl last:rounded-r-2xl"
+          btnClassName="rounded-l-none rounded-r-none first:rounded-l-2xl last:rounded-r-2xl"
           selected={outcome}
           onSelect={setOutcome}
           isPseudoNumeric={isPseudoNumeric}
@@ -113,7 +113,12 @@ export function BetInline(props: {
           </Button>
         )}
         <SignUpPrompt size="xs" />
-        <button onClick={onClose}>
+        <button
+          onClick={() => {
+            setProbAfter(undefined)
+            onClose()
+          }}
+        >
           <XIcon className="ml-1 h-6 w-6" />
         </button>
       </Row>

web/components/bet-panel.tsx

@@ -1,6 +1,6 @@
 import clsx from 'clsx'
 import React, { useEffect, useState } from 'react'
-import { clamp, partition, sum, sumBy } from 'lodash'
+import { clamp, partition, sumBy } from 'lodash'
 
 import { useUser } from 'web/hooks/use-user'
 import { CPMMBinaryContract, PseudoNumericContract } from 'common/contract'
@@ -9,7 +9,6 @@ import { Row } from './layout/row'
 import { Spacer } from './layout/spacer'
 import {
   formatMoney,
-  formatMoneyWithDecimals,
   formatPercent,
   formatWithCommas,
 } from 'common/util/format'
@@ -18,7 +17,6 @@ import { User } from 'web/lib/firebase/users'
 import { Bet, LimitBet } from 'common/bet'
 import { APIError, placeBet, sellShares } from 'web/lib/firebase/api'
 import { AmountInput, BuyAmountInput } from './amount-input'
-import { InfoTooltip } from './info-tooltip'
 import {
   BinaryOutcomeLabel,
   HigherLabel,
@@ -261,8 +259,6 @@ function BuyPanel(props: {
   const currentReturn = betAmount ? (currentPayout - betAmount) / betAmount : 0
   const currentReturnPercent = formatPercent(currentReturn)
 
-  const totalFees = sum(Object.values(newBet.fees))
-
   const format = getFormattedMappedValue(contract)
 
   const bankrollFraction = (betAmount ?? 0) / (user?.balance ?? 1e9)
@@ -346,9 +342,9 @@ function BuyPanel(props: {
                 </>
               )}
             </div>
-            <InfoTooltip
+            {/* <InfoTooltip
               text={`Includes ${formatMoneyWithDecimals(totalFees)} in fees`}
-            />
+            /> */}
           </Row>
           <div>
             <span className="mr-2 whitespace-nowrap">
@@ -665,9 +661,9 @@ function LimitOrderPanel(props: {
                   </>
                 )}
               </div>
-              <InfoTooltip
+              {/* <InfoTooltip
                 text={`Includes ${formatMoneyWithDecimals(yesFees)} in fees`}
-              />
+              /> */}
             </Row>
             <div>
               <span className="mr-2 whitespace-nowrap">
@@ -689,9 +685,9 @@ function LimitOrderPanel(props: {
                   </>
                 )}
               </div>
-              <InfoTooltip
+              {/* <InfoTooltip
                 text={`Includes ${formatMoneyWithDecimals(noFees)} in fees`}
-              />
+              /> */}
             </Row>
             <div>
               <span className="mr-2 whitespace-nowrap">

web/components/challenges/create-challenge-modal.tsx

@@ -21,7 +21,7 @@ import { AmountInput } from '../amount-input'
 import { getProbability } from 'common/calculate'
 import { createMarket } from 'web/lib/firebase/api'
 import { removeUndefinedProps } from 'common/util/object'
-import { FIXED_ANTE } from 'common/antes'
+import { FIXED_ANTE } from 'common/economy'
 import Textarea from 'react-expanding-textarea'
 import { useTextEditor } from 'web/components/editor'
 import { LoadingIndicator } from 'web/components/loading-indicator'

web/components/contract-search.tsx

@@ -91,6 +91,8 @@ export function ContractSearch(props: {
   useQuerySortLocalStorage?: boolean
   useQuerySortUrlParams?: boolean
   isWholePage?: boolean
+  maxItems?: number
+  noControls?: boolean
 }) {
   const {
     user,
@@ -105,6 +107,8 @@ export function ContractSearch(props: {
     useQuerySortLocalStorage,
     useQuerySortUrlParams,
     isWholePage,
+    maxItems,
+    noControls,
   } = props
 
   const [numPages, setNumPages] = useState(1)
@@ -158,6 +162,8 @@ export function ContractSearch(props: {
   const contracts = pages
     .flat()
     .filter((c) => !additionalFilter?.excludeContractIds?.includes(c.id))
+  const renderedContracts =
+    pages.length === 0 ? undefined : contracts.slice(0, maxItems)
 
   if (IS_PRIVATE_MANIFOLD || process.env.NEXT_PUBLIC_FIREBASE_EMULATE) {
     return <ContractSearchFirestore additionalFilter={additionalFilter} />
@@ -175,10 +181,11 @@ export function ContractSearch(props: {
         useQuerySortUrlParams={useQuerySortUrlParams}
         user={user}
         onSearchParametersChanged={onSearchParametersChanged}
+        noControls={noControls}
       />
       <ContractsGrid
-        contracts={pages.length === 0 ? undefined : contracts}
+        contracts={renderedContracts}
-        loadMore={performQuery}
+        loadMore={noControls ? undefined : performQuery}
         showTime={showTime}
         onContractClick={onContractClick}
         highlightOptions={highlightOptions}
@@ -198,6 +205,7 @@ function ContractSearchControls(props: {
   useQuerySortLocalStorage?: boolean
   useQuerySortUrlParams?: boolean
   user?: User | null
+  noControls?: boolean
 }) {
   const {
     className,
@@ -209,6 +217,7 @@ function ContractSearchControls(props: {
     useQuerySortLocalStorage,
     useQuerySortUrlParams,
     user,
+    noControls,
   } = props
 
   const savedSort = useQuerySortLocalStorage ? getSavedSort() : null
@@ -329,6 +338,10 @@ function ContractSearchControls(props: {
     })
   }, [query, index, searchIndex, filter, JSON.stringify(facetFilters)])
 
+  if (noControls) {
+    return <></>
+  }
+
   return (
     <Col
       className={clsx('bg-base-200 sticky top-0 z-20 gap-3 pb-3', className)}

web/components/contract/FeaturedContractBadge.tsx

@@ -0,0 +1,9 @@
+import { SparklesIcon } from '@heroicons/react/solid'
+
+export function FeaturedContractBadge() {
+  return (
+    <span className="inline-flex items-center gap-1 rounded-full bg-green-100 px-3  py-0.5 text-sm font-medium text-blue-800">
+      <SparklesIcon className="h-4 w-4" aria-hidden="true" /> Featured
+    </span>
+  )
+}

web/components/contract/contract-details.tsx

@@ -32,6 +32,8 @@ import { groupPath } from 'web/lib/firebase/groups'
 import { insertContent } from '../editor/utils'
 import clsx from 'clsx'
 import { contractMetrics } from 'common/contract-details'
+import { User } from 'common/user'
+import { FeaturedContractBadge } from 'web/components/contract/FeaturedContractBadge'
 
 export type ShowTime = 'resolve-date' | 'close-date'
 
@@ -72,6 +74,8 @@ export function MiscDetails(props: {
           {'Resolved '}
           {fromNow(resolutionTime || 0)}
         </Row>
+      ) : (contract?.featuredOnHomeRank ?? 0) > 0 ? (
+        <FeaturedContractBadge />
       ) : volume > 0 || !isNew ? (
         <Row className={'shrink-0'}>{formatMoney(contract.volume)} bet</Row>
       ) : (
@@ -134,6 +138,7 @@ export function AbbrContractDetails(props: {
 export function ContractDetails(props: {
   contract: Contract
   bets: Bet[]
+  user: User | null | undefined
   isCreator?: boolean
   disabled?: boolean
 }) {
@@ -157,7 +162,7 @@ export function ContractDetails(props: {
   )
 
   return (
-    <Row className="flex-1 flex-wrap items-center gap-x-4 gap-y-2 text-sm text-gray-500">
+    <Row className="flex-1 flex-wrap items-center gap-2 text-sm text-gray-500 md:gap-x-4 md:gap-y-2">
       <Row className="items-center gap-2">
         <Avatar
           username={creatorUsername}
@@ -179,6 +184,8 @@ export function ContractDetails(props: {
       <Row>
         {disabled ? (
           groupInfo
+        ) : !groupToDisplay && !user ? (
+          <div />
         ) : (
           <Button
             size={'xs'}
@@ -206,10 +213,9 @@ export function ContractDetails(props: {
 
       {(!!closeTime || !!resolvedDate) && (
         <Row className="items-center gap-1">
-          <ClockIcon className="h-5 w-5" />
-
           {resolvedDate && contract.resolutionTime ? (
             <>
+              <ClockIcon className="h-5 w-5" />
               <DateTimeTooltip
                 text="Market resolved:"
                 time={dayjs(contract.resolutionTime)}
@@ -219,8 +225,9 @@ export function ContractDetails(props: {
             </>
           ) : null}
 
-          {!resolvedDate && closeTime && (
+          {!resolvedDate && closeTime && user && (
             <>
+              <ClockIcon className="h-5 w-5" />
               <EditableCloseDate
                 closeTime={closeTime}
                 contract={contract}
@@ -230,14 +237,15 @@ export function ContractDetails(props: {
           )}
         </Row>
       )}
-
+      {user && (
+        <>
           <Row className="items-center gap-1">
             <DatabaseIcon className="h-5 w-5" />
-
             <div className="whitespace-nowrap">{volumeLabel}</div>
           </Row>
-
           {!disabled && <ContractInfoDialog contract={contract} bets={bets} />}
+        </>
+      )}
     </Row>
   )
 }

web/components/contract/contract-info-dialog.tsx

@@ -7,12 +7,16 @@ import { Bet } from 'common/bet'
 
 import { Contract } from 'common/contract'
 import { formatMoney } from 'common/util/format'
-import { contractPool } from 'web/lib/firebase/contracts'
+import { contractPool, updateContract } from 'web/lib/firebase/contracts'
 import { LiquidityPanel } from '../liquidity-panel'
 import { Col } from '../layout/col'
 import { Modal } from '../layout/modal'
 import { Title } from '../title'
 import { InfoTooltip } from '../info-tooltip'
+import { useAdmin, useDev } from 'web/hooks/use-admin'
+import { SiteLink } from '../site-link'
+import { firestoreConsolePath } from 'common/envs/constants'
+import { deleteField } from 'firebase/firestore'
 
 export const contractDetailsButtonClassName =
   'group flex items-center rounded-md px-3 py-2 text-sm font-medium cursor-pointer hover:bg-gray-100 text-gray-400 hover:text-gray-500'
@@ -21,10 +25,15 @@ export function ContractInfoDialog(props: { contract: Contract; bets: Bet[] }) {
   const { contract, bets } = props
 
   const [open, setOpen] = useState(false)
+  const [featured, setFeatured] = useState(
+    (contract?.featuredOnHomeRank ?? 0) > 0
+  )
+  const isDev = useDev()
+  const isAdmin = useAdmin()
 
   const formatTime = (dt: number) => dayjs(dt).format('MMM DD, YYYY hh:mm a z')
 
-  const { createdTime, closeTime, resolutionTime, mechanism, outcomeType } =
+  const { createdTime, closeTime, resolutionTime, mechanism, outcomeType, id } =
     contract
 
   const tradersCount = uniqBy(
@@ -105,10 +114,10 @@ export function ContractInfoDialog(props: { contract: Contract; bets: Bet[] }) {
                 <td>{formatMoney(contract.volume)}</td>
               </tr>
 
-              <tr>
+              {/* <tr>
                 <td>Creator earnings</td>
                 <td>{formatMoney(contract.collectedFees.creatorFee)}</td>
-              </tr>
+              </tr> */}
 
               <tr>
                 <td>Traders</td>
@@ -121,6 +130,60 @@ export function ContractInfoDialog(props: { contract: Contract; bets: Bet[] }) {
                 </td>
                 <td>{contractPool(contract)}</td>
               </tr>
+
+              {/* Show a path to Firebase if user is an admin, or we're on localhost */}
+              {(isAdmin || isDev) && (
+                <tr>
+                  <td>[DEV] Firestore</td>
+                  <td>
+                    <SiteLink href={firestoreConsolePath(id)}>
+                      Console link
+                    </SiteLink>
+                  </td>
+                </tr>
+              )}
+              {isAdmin && (
+                <tr>
+                  <td>Set featured</td>
+                  <td>
+                    <select
+                      className="select select-bordered"
+                      value={featured ? 'true' : 'false'}
+                      onChange={(e) => {
+                        const newVal = e.target.value === 'true'
+                        if (
+                          newVal &&
+                          (contract.featuredOnHomeRank === 0 ||
+                            !contract?.featuredOnHomeRank)
+                        )
+                          updateContract(id, {
+                            featuredOnHomeRank: 1,
+                          })
+                            .then(() => {
+                              setFeatured(true)
+                            })
+                            .catch(console.error)
+                        else if (
+                          !newVal &&
+                          (contract?.featuredOnHomeRank ?? 0) > 0
+                        )
+                          updateContract(id, {
+                            // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+                            // @ts-ignore
+                            featuredOnHomeRank: deleteField(),
+                          })
+                            .then(() => {
+                              setFeatured(false)
+                            })
+                            .catch(console.error)
+                      }}
+                    >
+                      <option value="false">false</option>
+                      <option value="true">true</option>
+                    </select>
+                  </td>
+                </tr>
+              )}
             </tbody>
           </table>
 

web/components/contract/contract-leaderboard.tsx

@@ -49,7 +49,7 @@ export function ContractLeaderboard(props: {
 
   return users && users.length > 0 ? (
     <Leaderboard
-      title="🏅 Top traders"
+      title="🏅 Top bettors"
       users={users || []}
       columns={[
         {

web/components/contract/contract-overview.tsx

@@ -3,7 +3,6 @@ import clsx from 'clsx'
 
 import { tradingAllowed } from 'web/lib/firebase/contracts'
 import { Col } from '../layout/col'
-import { Spacer } from '../layout/spacer'
 import { ContractProbGraph } from './contract-prob-graph'
 import { useUser } from 'web/hooks/use-user'
 import { Row } from '../layout/row'
@@ -39,15 +38,15 @@ export const ContractOverview = (props: {
 
   return (
     <Col className={clsx('mb-6', className)}>
-      <Col className="gap-4 px-2">
+      <Col className="gap-3 px-2 sm:gap-4">
         <Row className="justify-between gap-4">
           <div className="text-2xl text-indigo-700 md:text-3xl">
             <Linkify text={question} />
           </div>
-
+          <Row className={'hidden gap-3 xl:flex'}>
             {isBinary && (
               <BinaryResolutionOrChance
-              className="hidden items-end xl:flex"
+                className="items-end"
                 contract={contract}
                 large
               />
@@ -56,35 +55,46 @@ export const ContractOverview = (props: {
             {isPseudoNumeric && (
               <PseudoNumericResolutionOrExpectation
                 contract={contract}
-              className="hidden items-end xl:flex"
+                className="items-end"
               />
             )}
 
             {outcomeType === 'NUMERIC' && (
               <NumericResolutionOrExpectation
                 contract={contract}
-              className="hidden items-end xl:flex"
+                className="items-end"
               />
             )}
           </Row>
+        </Row>
 
         {isBinary ? (
           <Row className="items-center justify-between gap-4 xl:hidden">
             <BinaryResolutionOrChance contract={contract} />
-
             {tradingAllowed(contract) && (
+              <Col>
                 <BetButton contract={contract as CPMMBinaryContract} />
+                {!user && (
+                  <div className="mt-1 text-center text-sm text-gray-500">
+                    (with play money!)
+                  </div>
+                )}
+              </Col>
             )}
           </Row>
         ) : isPseudoNumeric ? (
           <Row className="items-center justify-between gap-4 xl:hidden">
             <PseudoNumericResolutionOrExpectation contract={contract} />
-            {tradingAllowed(contract) && <BetButton contract={contract} />}
+            {tradingAllowed(contract) && (
-          </Row>
+              <Col>
-        ) : isPseudoNumeric ? (
+                <BetButton contract={contract} />
-          <Row className="items-center justify-between gap-4 xl:hidden">
+                {!user && (
-            <PseudoNumericResolutionOrExpectation contract={contract} />
+                  <div className="mt-1 text-center text-sm text-gray-500">
-            {tradingAllowed(contract) && <BetButton contract={contract} />}
+                    (with play money!)
+                  </div>
+                )}
+              </Col>
+            )}
           </Row>
         ) : (
           (outcomeType === 'FREE_RESPONSE' ||
@@ -107,9 +117,10 @@ export const ContractOverview = (props: {
           contract={contract}
           bets={bets}
           isCreator={isCreator}
+          user={user}
         />
       </Col>
-      <Spacer h={4} />
+      <div className={'my-1 md:my-2'}></div>
       {(isBinary || isPseudoNumeric) && (
         <ContractProbGraph contract={contract} bets={bets} />
       )}{' '}

web/components/contract/contract-prob-graph.tsx

@@ -58,7 +58,7 @@ export const ContractProbGraph = memo(function ContractProbGraph(props: {
   const { width } = useWindowSize()
 
   const numXTickValues = !width || width < 800 ? 2 : 5
-  const hoursAgo = latestTime.subtract(5, 'hours')
+  const hoursAgo = latestTime.subtract(1, 'hours')
   const startDate = dayjs(times[0]).isBefore(hoursAgo)
     ? times[0]
     : hoursAgo.toDate()

web/components/contract/contracts-grid.tsx

@@ -86,10 +86,12 @@ export function ContractsGrid(props: {
           />
         ))}
       </Masonry>
+      {loadMore && (
         <VisibilityObserver
           onVisibilityUpdated={onVisibilityUpdated}
           className="relative -top-96 h-1"
         />
+      )}
     </Col>
   )
 }

web/components/contract/follow-market-modal.tsx

@@ -0,0 +1,40 @@
+import { Col } from 'web/components/layout/col'
+import { Modal } from 'web/components/layout/modal'
+import { EyeIcon } from '@heroicons/react/outline'
+import React from 'react'
+import clsx from 'clsx'
+
+export const FollowMarketModal = (props: {
+  open: boolean
+  setOpen: (b: boolean) => void
+  title?: string
+}) => {
+  const { open, setOpen, title } = props
+  return (
+    <Modal open={open} setOpen={setOpen}>
+      <Col className="items-center gap-4 rounded-md bg-white px-8 py-6">
+        <EyeIcon className={clsx('h-20 w-20')} aria-hidden="true" />
+        <span className="text-xl">{title ? title : 'Watching questions'}</span>
+        <Col className={'gap-2'}>
+          <span className={'text-indigo-700'}>• What is watching?</span>
+          <span className={'ml-2'}>
+            You can receive notifications on questions you're interested in by
+            clicking the
+            <EyeIcon
+              className={clsx('ml-1 inline h-6 w-6 align-top')}
+              aria-hidden="true"
+            />
+            ️ button on a question.
+          </span>
+          <span className={'text-indigo-700'}>
+            • What types of notifications will I receive?
+          </span>
+          <span className={'ml-2'}>
+            You'll receive in-app notifications for new comments, answers, and
+            updates to the question.
+          </span>
+        </Col>
+      </Col>
+    </Modal>
+  )
+}

web/components/contract/share-modal.tsx

@@ -14,9 +14,10 @@ import { Button } from '../button'
 import { copyToClipboard } from 'web/lib/util/copy'
 import { track } from 'web/lib/service/analytics'
 import { ENV_CONFIG } from 'common/envs/constants'
-import { REFERRAL_AMOUNT, User } from 'common/user'
+import { User } from 'common/user'
 import { SiteLink } from '../site-link'
 import { formatMoney } from 'common/util/format'
+import { REFERRAL_AMOUNT } from 'common/economy'
 
 export function ShareModal(props: {
   contract: Contract

web/components/contract/share-row.tsx

@@ -10,6 +10,7 @@ import { User } from 'common/user'
 import { CHALLENGES_ENABLED } from 'common/challenge'
 import { ShareModal } from './share-modal'
 import { withTracking } from 'web/lib/service/analytics'
+import { FollowMarketButton } from 'web/components/follow-market-button'
 
 export function ShareRow(props: {
   contract: Contract
@@ -25,7 +26,7 @@ export function ShareRow(props: {
   const [isShareOpen, setShareOpen] = useState(false)
 
   return (
-    <Row className="mt-2">
+    <Row className="mt-0.5 sm:mt-2">
       <Button
         size="lg"
         color="gray-white"
@@ -62,6 +63,7 @@ export function ShareRow(props: {
           />
         </Button>
       )}
+      <FollowMarketButton contract={contract} user={user} />
     </Row>
   )
 }

web/components/copy-contract-button.tsx

@@ -1,9 +1,7 @@
 import { DuplicateIcon } from '@heroicons/react/outline'
 import clsx from 'clsx'
 import { Contract } from 'common/contract'
-import { ENV_CONFIG } from 'common/envs/constants'
 import { getMappedValue } from 'common/pseudo-numeric'
-import { contractPath } from 'web/lib/firebase/contracts'
 import { trackCallback } from 'web/lib/service/analytics'
 
 export function DuplicateContractButton(props: {
@@ -33,22 +31,29 @@ export function DuplicateContractButton(props: {
 
 // Pass along the Uri to create a new contract
 function duplicateContractHref(contract: Contract) {
+  const descriptionString = JSON.stringify(contract.description)
+  // Don't set a closeTime that's in the past
+  const closeTime =
+    (contract?.closeTime ?? 0) <= Date.now() ? 0 : contract.closeTime
   const params = {
     q: contract.question,
-    closeTime: contract.closeTime || 0,
+    closeTime,
-    description:
+    description: descriptionString,
-      (contract.description ? `${contract.description}\n\n` : '') +
-      `(Copied from https://${ENV_CONFIG.domain}${contractPath(contract)})`,
     outcomeType: contract.outcomeType,
   } as Record<string, any>
 
   if (contract.outcomeType === 'PSEUDO_NUMERIC') {
     params.min = contract.min
     params.max = contract.max
-    params.isLogScale = contract.isLogScale
+    if (contract.isLogScale) {
+      // Conditional, because `?isLogScale=false` evaluates to `true`
+      params.isLogScale = true
+    }
     params.initValue = getMappedValue(contract)(contract.initialProbability)
   }
 
+  // TODO: Support multiple choice markets?
+
   if (contract.groupLinks && contract.groupLinks.length > 0) {
     params.groupId = contract.groupLinks[0].groupId
   }

web/components/editor.tsx

@@ -6,6 +6,7 @@ import {
   JSONContent,
   Content,
   Editor,
+  mergeAttributes,
 } from '@tiptap/react'
 import StarterKit from '@tiptap/starter-kit'
 import { Image } from '@tiptap/extension-image'
@@ -38,7 +39,16 @@ const DisplayImage = Image.configure({
   },
 })
 
-const DisplayLink = Link.configure({
+const DisplayLink = Link.extend({
+  renderHTML({ HTMLAttributes }) {
+    delete HTMLAttributes.class // only use our classes (don't duplicate on paste)
+    return [
+      'a',
+      mergeAttributes(this.options.HTMLAttributes, HTMLAttributes),
+      0,
+    ]
+  },
+}).configure({
   HTMLAttributes: {
     class: clsx('no-underline !text-indigo-700', linkClass),
   },

web/components/follow-market-button.tsx

@@ -0,0 +1,77 @@
+import { Button } from 'web/components/button'
+import {
+  Contract,
+  followContract,
+  unFollowContract,
+} from 'web/lib/firebase/contracts'
+import toast from 'react-hot-toast'
+import { CheckIcon, EyeIcon, EyeOffIcon } from '@heroicons/react/outline'
+import clsx from 'clsx'
+import { User } from 'common/user'
+import { useContractFollows } from 'web/hooks/use-follows'
+import { firebaseLogin, updateUser } from 'web/lib/firebase/users'
+import { track } from 'web/lib/service/analytics'
+import { FollowMarketModal } from 'web/components/contract/follow-market-modal'
+import { useState } from 'react'
+import { Row } from 'web/components/layout/row'
+
+export const FollowMarketButton = (props: {
+  contract: Contract
+  user: User | undefined | null
+}) => {
+  const { contract, user } = props
+  const followers = useContractFollows(contract.id)
+  const [open, setOpen] = useState(false)
+
+  return (
+    <Button
+      size={'lg'}
+      color={'gray-white'}
+      onClick={async () => {
+        if (!user) return firebaseLogin()
+        if (followers?.includes(user.id)) {
+          await unFollowContract(contract.id, user.id)
+          toast("You'll no longer receive notifications from this market", {
+            icon: <CheckIcon className={'text-primary h-5 w-5'} />,
+          })
+          track('Unwatch Market', {
+            slug: contract.slug,
+          })
+        } else {
+          await followContract(contract.id, user.id)
+          toast("You'll now receive notifications from this market!", {
+            icon: <CheckIcon className={'text-primary h-5 w-5'} />,
+          })
+          track('Watch Market', {
+            slug: contract.slug,
+          })
+        }
+        if (!user.hasSeenContractFollowModal) {
+          await updateUser(user.id, {
+            hasSeenContractFollowModal: true,
+          })
+          setOpen(true)
+        }
+      }}
+    >
+      {followers?.includes(user?.id ?? 'nope') ? (
+        <Row className={'gap-2'}>
+          <EyeOffIcon className={clsx('h-6 w-6')} aria-hidden="true" />
+          Unwatch
+        </Row>
+      ) : (
+        <Row className={'gap-2'}>
+          <EyeIcon className={clsx('h-6 w-6')} aria-hidden="true" />
+          Watch
+        </Row>
+      )}
+      <FollowMarketModal
+        open={open}
+        setOpen={setOpen}
+        title={`You ${
+          followers?.includes(user?.id ?? 'nope') ? 'watched' : 'unwatched'
+        } a question!`}
+      />
+    </Button>
+  )
+}

web/components/limit-bets.tsx

@@ -163,13 +163,15 @@ export function OrderBookButton(props: {
   const { limitBets, contract, className } = props
   const [open, setOpen] = useState(false)
 
-  const yesBets = sortBy(
+  const sortedBets = sortBy(
-    limitBets.filter((bet) => bet.outcome === 'YES'),
+    limitBets,
     (bet) => -1 * bet.limitProb,
     (bet) => bet.createdTime
   )
+
+  const yesBets = sortedBets.filter((bet) => bet.outcome === 'YES')
   const noBets = sortBy(
-    limitBets.filter((bet) => bet.outcome === 'NO'),
+    sortedBets.filter((bet) => bet.outcome === 'NO'),
     (bet) => bet.limitProb,
     (bet) => bet.createdTime
   )
@@ -202,7 +204,7 @@ export function OrderBookButton(props: {
           </Row>
           <Col className="md:hidden">
             <LimitOrderTable
-              limitBets={limitBets}
+              limitBets={sortedBets}
               contract={contract}
               isYou={false}
             />

web/components/nav/nav-bar.tsx

@@ -9,7 +9,7 @@ import {
 import { Transition, Dialog } from '@headlessui/react'
 import { useState, Fragment } from 'react'
 import Sidebar, { Item } from './sidebar'
-import { usePrivateUser, useUser } from 'web/hooks/use-user'
+import { useUser } from 'web/hooks/use-user'
 import { formatMoney } from 'common/util/format'
 import { Avatar } from '../avatar'
 import clsx from 'clsx'
@@ -17,8 +17,6 @@ import { useRouter } from 'next/router'
 import NotificationsIcon from 'web/components/notifications-icon'
 import { useIsIframe } from 'web/hooks/use-is-iframe'
 import { trackCallback } from 'web/lib/service/analytics'
-import { useUnseenPreferredNotifications } from 'web/hooks/use-notifications'
-import { PrivateUser } from 'common/user'
 
 function getNavigation() {
   return [
@@ -44,7 +42,6 @@ export function BottomNavBar() {
   const currentPage = router.pathname
 
   const user = useUser()
-  const privateUser = usePrivateUser()
 
   const isIframe = useIsIframe()
   if (isIframe) {
@@ -85,11 +82,7 @@ export function BottomNavBar() {
         onClick={() => setSidebarOpen(true)}
       >
         <MenuAlt3Icon className=" my-1 mx-auto h-6 w-6" aria-hidden="true" />
-        {privateUser ? (
+        More
-          <MoreMenuWithGroupNotifications privateUser={privateUser} />
-        ) : (
-          'More'
-        )}
       </div>
 
       <MobileSidebar
@@ -100,22 +93,6 @@ export function BottomNavBar() {
   )
 }
 
-function MoreMenuWithGroupNotifications(props: { privateUser: PrivateUser }) {
-  const { privateUser } = props
-  const preferredNotifications = useUnseenPreferredNotifications(privateUser, {
-    customHref: '/group/',
-  })
-  return (
-    <span
-      className={
-        preferredNotifications.length > 0 ? 'font-bold' : 'font-normal'
-      }
-    >
-      More
-    </span>
-  )
-}
-
 function NavBarItem(props: { item: Item; currentPage: string }) {
   const { item, currentPage } = props
   const track = trackCallback(`navbar: ${item.trackingEventName ?? item.name}`)

web/components/nav/sidebar.tsx

@@ -12,22 +12,20 @@ import {
 import clsx from 'clsx'
 import Link from 'next/link'
 import Router, { useRouter } from 'next/router'
-import { usePrivateUser, useUser } from 'web/hooks/use-user'
+import { useUser } from 'web/hooks/use-user'
 import { firebaseLogout, User } from 'web/lib/firebase/users'
 import { ManifoldLogo } from './manifold-logo'
 import { MenuButton } from './menu'
 import { ProfileSummary } from './profile-menu'
 import NotificationsIcon from 'web/components/notifications-icon'
-import React, { useMemo, useState } from 'react'
+import React, { useState } from 'react'
 import { IS_PRIVATE_MANIFOLD } from 'common/envs/constants'
 import { CreateQuestionButton } from 'web/components/create-question-button'
 import { useMemberGroups } from 'web/hooks/use-group'
 import { groupPath } from 'web/lib/firebase/groups'
 import { trackCallback, withTracking } from 'web/lib/service/analytics'
-import { Group, GROUP_CHAT_SLUG } from 'common/group'
+import { Group } from 'common/group'
 import { Spacer } from '../layout/spacer'
-import { useUnseenPreferredNotifications } from 'web/hooks/use-notifications'
-import { PrivateUser } from 'common/user'
 import { useWindowSize } from 'web/hooks/use-window-size'
 import { CHALLENGES_ENABLED } from 'common/challenge'
 import { buildArray } from 'common/util/array'
@@ -58,7 +56,14 @@ function getNavigation() {
 
 function getMoreNavigation(user?: User | null) {
   if (IS_PRIVATE_MANIFOLD) {
-    return [{ name: 'Leaderboards', href: '/leaderboards' }]
+    return [
+      { name: 'Leaderboards', href: '/leaderboards' },
+      {
+        name: 'Sign out',
+        href: '#',
+        onClick: logout,
+      },
+    ]
   }
 
   if (!user) {
@@ -88,7 +93,7 @@ function getMoreNavigation(user?: User | null) {
         href: 'https://salemcenter.manifold.markets/',
       },
       { name: 'Discord', href: 'https://discord.gg/eHQBNBqXuh' },
-      { name: 'About', href: 'https://docs.manifold.markets/$how-to' },
+      { name: 'Help & About', href: 'https://help.manifold.markets/' },
       {
         name: 'Sign out',
         href: '#',
@@ -102,16 +107,16 @@ const signedOutNavigation = [
   { name: 'Home', href: '/', icon: HomeIcon },
   { name: 'Explore', href: '/home', icon: SearchIcon },
   {
-    name: 'About',
+    name: 'Help & About',
-    href: 'https://docs.manifold.markets/$how-to',
+    href: 'https://help.manifold.markets/',
     icon: BookOpenIcon,
   },
 ]
 
 const signedOutMobileNavigation = [
   {
-    name: 'About',
+    name: 'Help & About',
-    href: 'https://docs.manifold.markets/$how-to',
+    href: 'https://help.manifold.markets/',
     icon: BookOpenIcon,
   },
   { name: 'Charity', href: '/charity', icon: HeartIcon },
@@ -125,8 +130,8 @@ const signedInMobileNavigation = [
     ? []
     : [{ name: 'Get M$', href: '/add-funds', icon: CashIcon }]),
   {
-    name: 'About',
+    name: 'Help & About',
-    href: 'https://docs.manifold.markets/$how-to',
+    href: 'https://help.manifold.markets/',
     icon: BookOpenIcon,
   },
 ]
@@ -221,8 +226,6 @@ export default function Sidebar(props: { className?: string }) {
   const currentPage = router.pathname
 
   const user = useUser()
-  const privateUser = usePrivateUser()
-  // usePing(user?.id)
 
   const navigationOptions = !user ? signedOutNavigation : getNavigation()
   const mobileNavigationOptions = !user
@@ -230,11 +233,9 @@ export default function Sidebar(props: { className?: string }) {
     : signedInMobileNavigation
 
   const memberItems = (
-    useMemberGroups(
+    useMemberGroups(user?.id, undefined, {
-      user?.id,
+      by: 'mostRecentContractAddedTime',
-      { withChatEnabled: true },
+    }) ?? []
-      { by: 'mostRecentChatActivityTime' }
-    ) ?? []
   ).map((group: Group) => ({
     name: group.name,
     href: `${groupPath(group.slug)}`,
@@ -268,13 +269,7 @@ export default function Sidebar(props: { className?: string }) {
         {memberItems.length > 0 && (
           <hr className="!my-4 mr-2 border-gray-300" />
         )}
-        {privateUser && (
+        <GroupsList currentPage={router.asPath} memberItems={memberItems} />
-          <GroupsList
-            currentPage={router.asPath}
-            memberItems={memberItems}
-            privateUser={privateUser}
-          />
-        )}
       </div>
 
       {/* Desktop navigation */}
@@ -289,46 +284,36 @@ export default function Sidebar(props: { className?: string }) {
 
         {/* Spacer if there are any groups */}
         {memberItems.length > 0 && <hr className="!my-4 border-gray-300" />}
-        {privateUser && (
+        <GroupsList currentPage={router.asPath} memberItems={memberItems} />
-          <GroupsList
-            currentPage={router.asPath}
-            memberItems={memberItems}
-            privateUser={privateUser}
-          />
-        )}
       </div>
     </nav>
   )
 }
 
-function GroupsList(props: {
+function GroupsList(props: { currentPage: string; memberItems: Item[] }) {
-  currentPage: string
+  const { currentPage, memberItems } = props
-  memberItems: Item[]
-  privateUser: PrivateUser
-}) {
-  const { currentPage, memberItems, privateUser } = props
-  const preferredNotifications = useUnseenPreferredNotifications(
-    privateUser,
-    {
-      customHref: '/group/',
-    },
-    memberItems.length > 0 ? memberItems.length : undefined
-  )
 
   const { height } = useWindowSize()
   const [containerRef, setContainerRef] = useState<HTMLDivElement | null>(null)
   const remainingHeight = (height ?? 0) - (containerRef?.offsetTop ?? 0)
 
-  const notifIsForThisItem = useMemo(
+  // const preferredNotifications = useUnseenPreferredNotifications(
-    () => (itemHref: string) =>
+  //   privateUser,
-      preferredNotifications.some(
+  //   {
-        (n) =>
+  //     customHref: '/group/',
-          !n.isSeen &&
+  //   },
-          (n.isSeenOnHref === itemHref ||
+  //   memberItems.length > 0 ? memberItems.length : undefined
-            n.isSeenOnHref?.replace('/chat', '') === itemHref)
+  // )
-      ),
+  // const notifIsForThisItem = useMemo(
-    [preferredNotifications]
+  //   () => (itemHref: string) =>
-  )
+  //     preferredNotifications.some(
+  //       (n) =>
+  //         !n.isSeen &&
+  //         (n.isSeenOnHref === itemHref ||
+  //           n.isSeenOnHref?.replace('/chat', '') === itemHref)
+  //     ),
+  //   [preferredNotifications]
+  // )
 
   return (
     <>
@@ -344,16 +329,12 @@ function GroupsList(props: {
       >
         {memberItems.map((item) => (
           <a
-            href={
+            href={item.href}
-              item.href +
-              (notifIsForThisItem(item.href) ? '/' + GROUP_CHAT_SLUG : '')
-            }
             key={item.name}
-            onClick={trackCallback('sidebar: ' + item.name)}
+            onClick={trackCallback('click sidebar group', { name: item.name })}
             className={clsx(
               'cursor-pointer truncate',
-              'group flex items-center rounded-md px-3 py-2 text-sm font-medium text-gray-600 hover:bg-gray-100 hover:text-gray-900',
+              'group flex items-center rounded-md px-3 py-2 text-sm font-medium text-gray-600 hover:bg-gray-100 hover:text-gray-900'
-              notifIsForThisItem(item.href) && 'font-bold'
             )}
           >
             {item.name}

web/components/portfolio/portfolio-value-section.tsx

@@ -14,7 +14,7 @@ export const PortfolioValueSection = memo(
   }) {
     const { disableSelector, userId } = props
 
-    const [portfolioPeriod, setPortfolioPeriod] = useState<Period>('allTime')
+    const [portfolioPeriod, setPortfolioPeriod] = useState<Period>('weekly')
     const [portfolioHistory, setUsersPortfolioHistory] = useState<
       PortfolioMetrics[]
     >([])
@@ -53,13 +53,15 @@ export const PortfolioValueSection = memo(
           {!disableSelector && (
             <select
               className="select select-bordered self-start"
+              value={portfolioPeriod}
               onChange={(e) => {
                 setPortfolioPeriod(e.target.value as Period)
               }}
             >
               <option value="allTime">{allTimeLabel}</option>
-              <option value="weekly">7 days</option>
+              <option value="weekly">Last 7d</option>
-              <option value="daily">24 hours</option>
+              {/* Note: 'daily' seems to be broken? */}
+              {/* <option value="daily">Last 24h</option> */}
             </select>
           )}
         </Row>

web/components/profile/betting-streak-modal.tsx

@@ -3,7 +3,7 @@ import { Col } from 'web/components/layout/col'
 import {
   BETTING_STREAK_BONUS_AMOUNT,
   BETTING_STREAK_BONUS_MAX,
-} from 'common/numeric-constants'
+} from 'common/economy'
 import { formatMoney } from 'common/util/format'
 
 export function BettingStreakModal(props: {
@@ -16,7 +16,7 @@ export function BettingStreakModal(props: {
     <Modal open={isOpen} setOpen={setOpen}>
       <Col className="items-center gap-4 rounded-md bg-white px-8 py-6">
         <span className={'text-8xl'}>🔥</span>
-        <span>Daily betting streaks</span>
+        <span className="text-xl">Daily betting streaks</span>
         <Col className={'gap-2'}>
           <span className={'text-indigo-700'}>• What are they?</span>
           <span className={'ml-2'}>

web/components/profile/loans-modal.tsx

@@ -0,0 +1,48 @@
+import { Modal } from 'web/components/layout/modal'
+import { Col } from 'web/components/layout/col'
+
+export function LoansModal(props: {
+  isOpen: boolean
+  setOpen: (open: boolean) => void
+}) {
+  const { isOpen, setOpen } = props
+
+  return (
+    <Modal open={isOpen} setOpen={setOpen}>
+      <Col className="items-center gap-4 rounded-md bg-white px-8 py-6">
+        <span className={'text-8xl'}>🏦</span>
+        <span className="text-xl">Daily loans on your bets</span>
+        <Col className={'gap-2'}>
+          <span className={'text-indigo-700'}>• What are daily loans?</span>
+          <span className={'ml-2'}>
+            Every day at midnight PT, get 1% of your total bet amount back as a
+            loan.
+          </span>
+          <span className={'text-indigo-700'}>
+            • Do I have to pay back a loan?
+          </span>
+          <span className={'ml-2'}>
+            Yes, don't worry! You will automatically pay back loans when the
+            market resolves or you sell your bet.
+          </span>
+          <span className={'text-indigo-700'}>
+            • What is the purpose of loans?
+          </span>
+          <span className={'ml-2'}>
+            Loans make it worthwhile to bet on markets that won't resolve for
+            months or years, because your investment won't be locked up as long.
+          </span>
+          <span className={'text-indigo-700'}>• What is an example?</span>
+          <span className={'ml-2'}>
+            For example, if you bet M$1000 on "Will I become a millionare?" on
+            Monday, you will get M$10 back on Tuesday.
+          </span>
+          <span className={'ml-2'}>
+            Previous loans count against your total bet amount. So on Wednesday,
+            you would get back 1% of M$990 = M$9.9.
+          </span>
+        </Col>
+      </Col>
+    </Modal>
+  )
+}

web/components/resolution-panel.tsx

@@ -8,10 +8,8 @@ import { Spacer } from './layout/spacer'
 import { ResolveConfirmationButton } from './confirmation-button'
 import { APIError, resolveMarket } from 'web/lib/firebase/api'
 import { ProbabilitySelector } from './probability-selector'
-import { DPM_CREATOR_FEE } from 'common/fees'
 import { getProbability } from 'common/calculate'
 import { BinaryContract, resolution } from 'common/contract'
-import { formatMoney } from 'common/util/format'
 
 export function ResolutionPanel(props: {
   creator: User
@@ -20,10 +18,10 @@ export function ResolutionPanel(props: {
 }) {
   const { contract, className } = props
 
-  const earnedFees =
+  // const earnedFees =
-    contract.mechanism === 'dpm-2'
+  //   contract.mechanism === 'dpm-2'
-      ? `${DPM_CREATOR_FEE * 100}% of trader profits`
+  //     ? `${DPM_CREATOR_FEE * 100}% of trader profits`
-      : `${formatMoney(contract.collectedFees.creatorFee)} in fees`
+  //     : `${formatMoney(contract.collectedFees.creatorFee)} in fees`
 
   const [outcome, setOutcome] = useState<resolution | undefined>()
 
@@ -86,16 +84,16 @@ export function ResolutionPanel(props: {
         {outcome === 'YES' ? (
           <>
             Winnings will be paid out to YES bettors.
+            {/* <br />
             <br />
-            <br />
+            You will earn {earnedFees}. */}
-            You will earn {earnedFees}.
           </>
         ) : outcome === 'NO' ? (
           <>
             Winnings will be paid out to NO bettors.
+            {/* <br />
             <br />
-            <br />
+            You will earn {earnedFees}. */}
-            You will earn {earnedFees}.
           </>
         ) : outcome === 'CANCEL' ? (
           <>All trades will be returned with no fees.</>
@@ -106,7 +104,7 @@ export function ResolutionPanel(props: {
               probabilityInt={Math.round(prob)}
               setProbabilityInt={setProb}
             />
-            You will earn {earnedFees}.
+            {/* You will earn {earnedFees}. */}
           </Col>
         ) : (
           <>Resolving this market will immediately pay out traders.</>

web/components/user-page.tsx

@@ -29,6 +29,8 @@ import { formatMoney } from 'common/util/format'
 import { ShareIconButton } from 'web/components/share-icon-button'
 import { ENV_CONFIG } from 'common/envs/constants'
 import { BettingStreakModal } from 'web/components/profile/betting-streak-modal'
+import { REFERRAL_AMOUNT } from 'common/economy'
+import { LoansModal } from './profile/loans-modal'
 
 export function UserLink(props: {
   name: string
@@ -67,6 +69,7 @@ export function UserPage(props: { user: User }) {
   const bannerUrl = user.bannerUrl ?? defaultBannerUrl(user.id)
   const [showConfetti, setShowConfetti] = useState(false)
   const [showBettingStreakModal, setShowBettingStreakModal] = useState(false)
+  const [showLoansModal, setShowLoansModal] = useState(false)
 
   useEffect(() => {
     const claimedMana = router.query['claimed-mana'] === 'yes'
@@ -74,6 +77,9 @@ export function UserPage(props: { user: User }) {
     setShowBettingStreakModal(showBettingStreak)
     setShowConfetti(claimedMana || showBettingStreak)
 
+    const showLoansModel = router.query['show'] === 'loans'
+    setShowLoansModal(showLoansModel)
+
     const query = { ...router.query }
     if (query.claimedMana || query.show) {
       delete query['claimed-mana']
@@ -106,6 +112,9 @@ export function UserPage(props: { user: User }) {
         isOpen={showBettingStreakModal}
         setOpen={setShowBettingStreakModal}
       />
+      {showLoansModal && (
+        <LoansModal isOpen={showLoansModal} setOpen={setShowLoansModal} />
+      )}
       {/* Banner image up top, with an circle avatar overlaid */}
       <div
         className="h-32 w-full bg-cover bg-center sm:h-40"
@@ -127,7 +136,7 @@ export function UserPage(props: { user: User }) {
         <div className="absolute right-0 top-0 mt-2 mr-4">
           {!isCurrentUser && <UserFollowButton userId={user.id} />}
           {isCurrentUser && (
-            <SiteLink className="sm:btn-md btn-sm btn" href="/profile">
+            <SiteLink className="btn-sm btn" href="/profile">
               <PencilIcon className="h-5 w-5" />{' '}
               <div className="ml-2">Edit</div>
             </SiteLink>
@@ -137,9 +146,14 @@ export function UserPage(props: { user: User }) {
 
       {/* Profile details: name, username, bio, and link to twitter/discord */}
       <Col className="mx-4 -mt-6">
-        <Row className={'justify-between'}>
+        <Row className={'flex-wrap justify-between gap-y-2'}>
           <Col>
-            <span className="text-2xl font-bold">{user.name}</span>
+            <span
+              className="text-2xl font-bold"
+              style={{ wordBreak: 'break-word' }}
+            >
+              {user.name}
+            </span>
             <span className="text-gray-500">@{user.username}</span>
           </Col>
           <Col className={'justify-center'}>
@@ -162,6 +176,17 @@ export function UserPage(props: { user: User }) {
                 <span>🔥 {user.currentBettingStreak ?? 0}</span>
                 <span>streak</span>
               </Col>
+              <Col
+                className={
+                  'flex-shrink-0 cursor-pointer items-center text-gray-500'
+                }
+                onClick={() => setShowLoansModal(true)}
+              >
+                <span className="text-green-600">
+                  🏦 {formatMoney(user.nextLoanCached ?? 0)}
+                </span>
+                <span>next loan</span>
+              </Col>
             </Row>
           </Col>
         </Row>
@@ -226,7 +251,7 @@ export function UserPage(props: { user: User }) {
           )}
         </Row>
         <Spacer h={5} />
-        {currentUser?.id === user.id && (
+        {currentUser?.id === user.id && REFERRAL_AMOUNT > 0 && (
           <Row
             className={
               'w-full items-center justify-center gap-2 rounded-md border-2 border-indigo-100 bg-indigo-50 p-2 text-indigo-600'
@@ -234,7 +259,7 @@ export function UserPage(props: { user: User }) {
           >
             <span>
               <SiteLink href="/referrals">
-                Earn {formatMoney(500)} when you refer a friend!
+                Earn {formatMoney(REFERRAL_AMOUNT)} when you refer a friend!
               </SiteLink>{' '}
               You have <ReferralsButton user={user} currentUser={currentUser} />
             </span>
@@ -278,10 +303,7 @@ export function UserPage(props: { user: User }) {
                 >
                   <FollowingButton user={user} />
                   <FollowersButton user={user} />
-                  {currentUser &&
+                  <ReferralsButton user={user} />
-                    ['ian', 'Austin', 'SG', 'JamesGrugett'].includes(
-                      currentUser.username
-                    ) && <ReferralsButton user={user} />}
                   <GroupsButton user={user} />
                 </Row>
               ),

web/hooks/use-admin.ts

@@ -5,3 +5,7 @@ export const useAdmin = () => {
   const privateUser = usePrivateUser()
   return isAdmin(privateUser?.email || '')
 }
+
+export const useDev = () => {
+  return process.env.NODE_ENV === 'development'
+}

web/hooks/use-follows.ts

@@ -1,5 +1,6 @@
 import { useEffect, useState } from 'react'
 import { listenForFollowers, listenForFollows } from 'web/lib/firebase/users'
+import { contracts, listenForContractFollows } from 'web/lib/firebase/contracts'
 
 export const useFollows = (userId: string | null | undefined) => {
   const [followIds, setFollowIds] = useState<string[] | undefined>()
@@ -29,3 +30,13 @@ export const useFollowers = (userId: string | undefined) => {
 
   return followerIds
 }
+
+export const useContractFollows = (contractId: string) => {
+  const [followIds, setFollowIds] = useState<string[] | undefined>()
+
+  useEffect(() => {
+    return listenForContractFollows(contractId, setFollowIds)
+  }, [contractId])
+
+  return followIds
+}

web/hooks/use-notifications.ts

@@ -5,7 +5,7 @@ import {
   getNotificationsQuery,
   listenForNotifications,
 } from 'web/lib/firebase/notifications'
-import { groupBy, map } from 'lodash'
+import { groupBy, map, partition } from 'lodash'
 import { useFirestoreQueryData } from '@react-query-firebase/firestore'
 import { NOTIFICATIONS_PER_PAGE } from 'web/pages/notifications'
 
@@ -67,19 +67,14 @@ export function groupNotifications(notifications: Notification[]) {
   const notificationGroupsByDay = groupBy(notifications, (notification) =>
     new Date(notification.createdTime).toDateString()
   )
+  const incomeSourceTypes = ['bonus', 'tip', 'loan', 'betting_streak_bonus']
+
   Object.keys(notificationGroupsByDay).forEach((day) => {
     const notificationsGroupedByDay = notificationGroupsByDay[day]
-    const incomeNotifications = notificationsGroupedByDay.filter(
+    const [incomeNotifications, normalNotificationsGroupedByDay] = partition(
+      notificationsGroupedByDay,
       (notification) =>
-        notification.sourceType === 'bonus' ||
+        incomeSourceTypes.includes(notification.sourceType ?? '')
-        notification.sourceType === 'tip' ||
-        notification.sourceType === 'betting_streak_bonus'
-    )
-    const normalNotificationsGroupedByDay = notificationsGroupedByDay.filter(
-      (notification) =>
-        notification.sourceType !== 'bonus' &&
-        notification.sourceType !== 'tip' &&
-        notification.sourceType !== 'betting_streak_bonus'
     )
     if (incomeNotifications.length > 0) {
       notificationGroups = notificationGroups.concat({
@@ -152,6 +147,7 @@ export function useUnseenPreferredNotifications(
 const lessPriorityReasons = [
   'on_contract_with_users_comment',
   'on_contract_with_users_answer',
+  // Notifications not currently generated for users who've sold their shares
   'on_contract_with_users_shares_out',
   // Not sure if users will want to see these w/ less:
   // 'on_contract_with_users_shares_in',

web/lib/firebase/contracts.ts

@@ -125,9 +125,10 @@ export async function listTaggedContractsCaseInsensitive(
 
 export async function listAllContracts(
   n: number,
-  before?: string
+  before?: string,
+  sortDescBy = 'createdTime'
 ): Promise<Contract[]> {
-  let q = query(contracts, orderBy('createdTime', 'desc'), limit(n))
+  let q = query(contracts, orderBy(sortDescBy, 'desc'), limit(n))
   if (before != null) {
     const snap = await getDoc(doc(contracts, before))
     q = query(q, startAfter(snap))
@@ -211,6 +212,29 @@ export function listenForContract(
   return listenForValue<Contract>(contractRef, setContract)
 }
 
+export function listenForContractFollows(
+  contractId: string,
+  setFollowIds: (followIds: string[]) => void
+) {
+  const follows = collection(contracts, contractId, 'follows')
+  return listenForValues<{ id: string }>(follows, (docs) =>
+    setFollowIds(docs.map(({ id }) => id))
+  )
+}
+
+export async function followContract(contractId: string, userId: string) {
+  const followDoc = doc(collection(contracts, contractId, 'follows'), userId)
+  return await setDoc(followDoc, {
+    id: userId,
+    createdTime: Date.now(),
+  })
+}
+
+export async function unFollowContract(contractId: string, userId: string) {
+  const followDoc = doc(collection(contracts, contractId, 'follows'), userId)
+  await deleteDoc(followDoc)
+}
+
 function chooseRandomSubset(contracts: Contract[], count: number) {
   const fiveMinutes = 5 * 60 * 1000
   const seed = Math.round(Date.now() / fiveMinutes).toString()
@@ -271,6 +295,26 @@ export async function getClosingSoonContracts() {
   return sortBy(chooseRandomSubset(data, 2), (contract) => contract.closeTime)
 }
 
+export const getRandTopCreatorContracts = async (
+  creatorId: string,
+  count: number,
+  excluding: string[] = []
+) => {
+  const creatorContractsQuery = query(
+    contracts,
+    where('isResolved', '==', false),
+    where('creatorId', '==', creatorId),
+    orderBy('popularityScore', 'desc'),
+    limit(Math.max(count * 2, 15))
+  )
+  const data = await getValues<Contract>(creatorContractsQuery)
+  const open = data
+    .filter((c) => c.closeTime && c.closeTime > Date.now())
+    .filter((c) => !excluding.includes(c.id))
+
+  return chooseRandomSubset(open, count)
+}
+
 export async function getRecentBetsAndComments(contract: Contract) {
   const contractDoc = doc(contracts, contract.id)
 

web/next-sitemap.js

@@ -1,15 +0,0 @@
-/** @type {import('next-sitemap').IConfig} */
-
-module.exports = {
-  siteUrl: process.env.SITE_URL || 'https://manifold.markets',
-  changefreq: 'hourly',
-  priority: 0.7, // Set high priority by default
-  exclude: ['/admin', '/server-sitemap.xml'],
-  generateRobotsTxt: true,
-  robotsTxtOptions: {
-    additionalSitemaps: [
-      'https://manifold.markets/server-sitemap.xml', // <==== Add here
-    ],
-  },
-  // Other options: https://github.com/iamvishnusankar/next-sitemap#configuration-options
-}

web/package.json

@@ -15,7 +15,6 @@
     "start": "next start",
     "lint": "next lint",
     "format": "npx prettier --write .",
-    "postbuild": "next-sitemap",
     "verify": "(cd .. && yarn verify)",
     "verify:dir": "npx prettier --check .; yarn lint --max-warnings 0; tsc --pretty --project tsconfig.json --noEmit"
   },

web/pages/[username]/[contractSlug].tsx

@@ -1,17 +1,17 @@
-import React, { useEffect, useMemo, useState } from 'react'
+import React, { useEffect, useState } from 'react'
 import { ArrowLeftIcon } from '@heroicons/react/outline'
-import { groupBy, keyBy, mapValues, sortBy, sumBy } from 'lodash'
 
 import { useContractWithPreload } from 'web/hooks/use-contract'
 import { ContractOverview } from 'web/components/contract/contract-overview'
 import { BetPanel } from 'web/components/bet-panel'
 import { Col } from 'web/components/layout/col'
-import { useUser, useUserById } from 'web/hooks/use-user'
+import { useUser } from 'web/hooks/use-user'
 import { ResolutionPanel } from 'web/components/resolution-panel'
 import { Spacer } from 'web/components/layout/spacer'
 import {
   Contract,
   getContractFromSlug,
+  getRandTopCreatorContracts,
   tradingAllowed,
 } from 'web/lib/firebase/contracts'
 import { SEO } from 'web/components/SEO'
@@ -21,9 +21,6 @@ import { listAllComments } from 'web/lib/firebase/comments'
 import Custom404 from '../404'
 import { AnswersPanel } from 'web/components/answers/answers-panel'
 import { fromPropz, usePropz } from 'web/hooks/use-propz'
-import { Leaderboard } from 'web/components/leaderboard'
-import { resolvedPayout } from 'common/calculate'
-import { formatMoney } from 'common/util/format'
 import { ContractTabs } from 'web/components/contract/contract-tabs'
 import { FullscreenConfetti } from 'web/components/fullscreen-confetti'
 import { NumericBetPanel } from 'web/components/numeric-bet-panel'
@@ -34,15 +31,17 @@ import { useBets } from 'web/hooks/use-bets'
 import { CPMMBinaryContract } from 'common/contract'
 import { AlertBox } from 'web/components/alert-box'
 import { useTracking } from 'web/hooks/use-tracking'
-import { CommentTipMap, useTipTxns } from 'web/hooks/use-tip-txns'
+import { useTipTxns } from 'web/hooks/use-tip-txns'
 import { useSaveReferral } from 'web/hooks/use-save-referral'
 import { User } from 'common/user'
 import { ContractComment } from 'common/comment'
-import { listUsers } from 'web/lib/firebase/users'
-import { FeedComment } from 'web/components/feed/feed-comments'
-import { Title } from 'web/components/title'
-import { FeedBet } from 'web/components/feed/feed-bets'
 import { getOpenGraphProps } from 'common/contract-details'
+import {
+  ContractLeaderboard,
+  ContractTopTrades,
+} from 'web/components/contract/contract-leaderboard'
+import { Subtitle } from 'web/components/subtitle'
+import { ContractsGrid } from 'web/components/contract/contracts-grid'
 
 export const getStaticProps = fromPropz(getStaticPropz)
 export async function getStaticPropz(props: {
@@ -52,9 +51,12 @@ export async function getStaticPropz(props: {
   const contract = (await getContractFromSlug(contractSlug)) || null
   const contractId = contract?.id
 
-  const [bets, comments] = await Promise.all([
+  const [bets, comments, recommendedContracts] = await Promise.all([
     contractId ? listAllBets(contractId) : [],
     contractId ? listAllComments(contractId) : [],
+    contract
+      ? getRandTopCreatorContracts(contract.creatorId, 4, [contract?.id])
+      : [],
   ])
 
   return {
@@ -65,6 +67,7 @@ export async function getStaticPropz(props: {
       // Limit the data sent to the client. Client will still load all bets and comments directly.
       bets: bets.slice(0, 5000),
       comments: comments.slice(0, 1000),
+      recommendedContracts,
     },
 
     revalidate: 60, // regenerate after a minute
@@ -81,6 +84,7 @@ export default function ContractPage(props: {
   bets: Bet[]
   comments: ContractComment[]
   slug: string
+  recommendedContracts: Contract[]
   backToHome?: () => void
 }) {
   props = usePropz(props, getStaticPropz) ?? {
@@ -88,6 +92,7 @@ export default function ContractPage(props: {
     username: '',
     comments: [],
     bets: [],
+    recommendedContracts: [],
     slug: '',
   }
 
@@ -149,7 +154,7 @@ export function ContractPageContent(
     user?: User | null
   }
 ) {
-  const { backToHome, comments, user } = props
+  const { backToHome, comments, user, recommendedContracts } = props
 
   const contract = useContractWithPreload(props.contract) ?? props.contract
 
@@ -263,128 +268,13 @@ export function ContractPageContent(
           comments={comments}
         />
       </Col>
+
+      {recommendedContracts.length > 0 && (
+        <Col className="gap-2 px-2 sm:px-0">
+          <Subtitle text="Recommended" />
+          <ContractsGrid contracts={recommendedContracts} />
+        </Col>
+      )}
     </Page>
   )
 }
-
-function ContractLeaderboard(props: { contract: Contract; bets: Bet[] }) {
-  const { contract, bets } = props
-  const [users, setUsers] = useState<User[]>()
-
-  const { userProfits, top5Ids } = useMemo(() => {
-    // Create a map of userIds to total profits (including sales)
-    const openBets = bets.filter((bet) => !bet.isSold && !bet.sale)
-    const betsByUser = groupBy(openBets, 'userId')
-
-    const userProfits = mapValues(betsByUser, (bets) =>
-      sumBy(bets, (bet) => resolvedPayout(contract, bet) - bet.amount)
-    )
-    // Find the 5 users with the most profits
-    const top5Ids = Object.entries(userProfits)
-      .sort(([_i1, p1], [_i2, p2]) => p2 - p1)
-      .filter(([, p]) => p > 0)
-      .slice(0, 5)
-      .map(([id]) => id)
-    return { userProfits, top5Ids }
-  }, [contract, bets])
-
-  useEffect(() => {
-    if (top5Ids.length > 0) {
-      listUsers(top5Ids).then((users) => {
-        const sortedUsers = sortBy(users, (user) => -userProfits[user.id])
-        setUsers(sortedUsers)
-      })
-    }
-  }, [userProfits, top5Ids])
-
-  return users && users.length > 0 ? (
-    <Leaderboard
-      title="🏅 Top bettors"
-      users={users || []}
-      columns={[
-        {
-          header: 'Total profit',
-          renderCell: (user) => formatMoney(userProfits[user.id] || 0),
-        },
-      ]}
-      className="mt-12 max-w-sm"
-    />
-  ) : null
-}
-
-function ContractTopTrades(props: {
-  contract: Contract
-  bets: Bet[]
-  comments: ContractComment[]
-  tips: CommentTipMap
-}) {
-  const { contract, bets, comments, tips } = props
-  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 = useUserById(betsById[topBetId]?.userId)
-
-  // And also the commentId of the comment with the highest profit
-  const topCommentId = sortBy(
-    comments,
-    (c) => c.betId && -profitById[c.betId]
-  )[0]?.id
-
-  return (
-    <div className="mt-12 max-w-sm">
-      {topCommentId && profitById[topCommentId] > 0 && (
-        <>
-          <Title text="💬 Proven correct" className="!mt-0" />
-          <div className="relative flex items-start space-x-3 rounded-md bg-gray-50 px-2 py-4">
-            <FeedComment
-              contract={contract}
-              comment={commentsById[topCommentId]}
-              tips={tips[topCommentId]}
-              betsBySameUser={[betsById[topCommentId]]}
-              smallAvatar={false}
-            />
-          </div>
-          <div className="mt-2 text-sm text-gray-500">
-            {commentsById[topCommentId].userName} made{' '}
-            {formatMoney(profitById[topCommentId] || 0)}!
-          </div>
-          <Spacer h={16} />
-        </>
-      )}
-
-      {/* If they're the same, only show the comment; otherwise show both */}
-      {topBettor && topBetId !== topCommentId && profitById[topBetId] > 0 && (
-        <>
-          <Title text="💸 Smartest money" className="!mt-0" />
-          <div className="relative flex items-start space-x-3 rounded-md bg-gray-50 px-2 py-4">
-            <FeedBet
-              contract={contract}
-              bet={betsById[topBetId]}
-              hideOutcome={false}
-              smallAvatar={false}
-            />
-          </div>
-          <div className="mt-2 text-sm text-gray-500">
-            {topBettor?.name} made {formatMoney(profitById[topBetId] || 0)}!
-          </div>
-        </>
-      )}
-    </div>
-  )
-}

web/pages/admin.tsx

@@ -10,6 +10,7 @@ import { mapKeys } from 'lodash'
 import { useAdmin } from 'web/hooks/use-admin'
 import { contractPath } from 'web/lib/firebase/contracts'
 import { redirectIfLoggedOut } from 'web/lib/firebase/server-auth'
+import { firestoreConsolePath } from 'common/envs/constants'
 
 export const getServerSideProps = redirectIfLoggedOut('/')
 
@@ -198,7 +199,7 @@ function ContractsTable() {
             html(`<a
               class="hover:underline hover:decoration-indigo-400 hover:decoration-2"
               target="_blank"
-              href="https://console.firebase.google.com/project/mantic-markets/firestore/data/~2Fcontracts~2F${cell}">${cell}</a>`),
+              href="${firestoreConsolePath(cell as string)}">${cell}</a>`),
         },
       ]}
       search={true}

web/pages/api/v0/_types.ts

@@ -22,8 +22,6 @@ export type LiteMarket = {
   // Market attributes. All times are in milliseconds since epoch
   closeTime?: number
   question: string
-  description: string | JSONContent
-  textDescription: string // string version of description
   tags: string[]
   url: string
   outcomeType: string
@@ -54,6 +52,8 @@ export type FullMarket = LiteMarket & {
   bets: Bet[]
   comments: Comment[]
   answers?: ApiAnswer[]
+  description: string | JSONContent
+  textDescription: string // string version of description
 }
 
 export type ApiError = {
@@ -81,7 +81,6 @@ export function toLiteMarket(contract: Contract): LiteMarket {
     creatorAvatarUrl,
     closeTime,
     question,
-    description,
     tags,
     slug,
     pool,
@@ -118,11 +117,6 @@ export function toLiteMarket(contract: Contract): LiteMarket {
         ? Math.min(resolutionTime, closeTime)
         : closeTime,
     question,
-    description,
-    textDescription:
-      typeof description === 'string'
-        ? description
-        : richTextToString(description),
     tags,
     url: `https://manifold.markets/${creatorUsername}/${slug}`,
     pool,
@@ -158,11 +152,18 @@ export function toFullMarket(
         )
       : undefined
 
+  const { description } = contract
+
   return {
     ...liteMarket,
     answers,
     comments,
     bets,
+    description,
+    textDescription:
+      typeof description === 'string'
+        ? description
+        : richTextToString(description),
   }
 }
 

web/pages/api/v0/markets.ts

@@ -10,7 +10,7 @@ const queryParams = z
   .object({
     limit: z
       .number()
-      .default(1000)
+      .default(500)
       .or(z.string().regex(/\d+/).transform(Number))
       .refine((n) => n >= 0 && n <= 1000, 'Limit must be between 0 and 1000'),
     before: z.string().optional(),

web/pages/charity/index.tsx

@@ -39,8 +39,8 @@ export async function getStaticProps() {
   ])
   const matches = quadraticMatches(txns, totalRaised)
   const numDonors = uniqBy(txns, (txn) => txn.fromId).length
-  const mostRecentDonor = await getUser(txns[0].fromId)
+  const mostRecentDonor = txns[0] ? await getUser(txns[0].fromId) : null
-  const mostRecentCharity = txns[0].toId
+  const mostRecentCharity = txns[0]?.toId ?? ''
 
   return {
     props: {
@@ -94,8 +94,8 @@ export default function Charity(props: {
   matches: { [charityId: string]: number }
   txns: Txn[]
   numDonors: number
-  mostRecentDonor: User
+  mostRecentDonor?: User | null
-  mostRecentCharity: string
+  mostRecentCharity?: string
 }) {
   const {
     totalRaised,
@@ -159,8 +159,8 @@ export default function Charity(props: {
               },
               {
                 name: 'Most recent donor',
-                stat: mostRecentDonor.name ?? 'Nobody',
+                stat: mostRecentDonor?.name ?? 'Nobody',
-                url: `/${mostRecentDonor.username}`,
+                url: `/${mostRecentDonor?.username}`,
               },
               {
                 name: 'Most recent donation',

web/pages/create.tsx

@@ -7,7 +7,7 @@ import { Spacer } from 'web/components/layout/spacer'
 import { getUserAndPrivateUser } from 'web/lib/firebase/users'
 import { Contract, contractPath } from 'web/lib/firebase/contracts'
 import { createMarket } from 'web/lib/firebase/api'
-import { FIXED_ANTE } from 'common/antes'
+import { FIXED_ANTE, FREE_MARKETS_PER_USER_MAX } from 'common/economy'
 import { InfoTooltip } from 'web/components/info-tooltip'
 import { Page } from 'web/components/page'
 import { Row } from 'web/components/layout/row'
@@ -158,6 +158,8 @@ export function NewContract(props: {
     : undefined
 
   const balance = creator.balance || 0
+  const deservesFreeMarket =
+    (creator.freeMarketsCreated ?? 0) < FREE_MARKETS_PER_USER_MAX
 
   const min = minString ? parseFloat(minString) : undefined
   const max = maxString ? parseFloat(maxString) : undefined
@@ -177,7 +179,7 @@ export function NewContract(props: {
     question.length > 0 &&
     ante !== undefined &&
     ante !== null &&
-    ante <= balance &&
+    (ante <= balance || deservesFreeMarket) &&
     // closeTime must be in the future
     closeTime &&
     closeTime > Date.now() &&
@@ -207,6 +209,7 @@ export function NewContract(props: {
     max: MAX_DESCRIPTION_LENGTH,
     placeholder: descriptionPlaceholder,
     disabled: isSubmitting,
+    defaultValue: JSON.parse(params?.description ?? '{}'),
   })
 
   const isEditorFilled = editor != null && !editor.isEmpty
@@ -460,12 +463,25 @@ export function NewContract(props: {
               text={`Cost to create your question. This amount is used to subsidize betting.`}
             />
           </label>
-
+          {!deservesFreeMarket ? (
             <div className="label-text text-neutral pl-1">
               {formatMoney(ante)}
             </div>
+          ) : (
+            <div>
+              <div className="label-text text-primary pl-1">
+                FREE{' '}
+                <span className="label-text pl-1 text-gray-500">
+                  (You have{' '}
+                  {FREE_MARKETS_PER_USER_MAX -
+                    (creator?.freeMarketsCreated ?? 0)}{' '}
+                  free markets left)
+                </span>
+              </div>
+            </div>
+          )}
 
-          {ante > balance && (
+          {ante > balance && !deservesFreeMarket && (
             <div className="mb-2 mt-2 mr-auto self-center whitespace-nowrap text-xs font-medium tracking-wide">
               <span className="mr-2 text-red-500">Insufficient balance</span>
               <button

web/pages/embed/[username]/[contractSlug].tsx

@@ -109,6 +109,7 @@ export function ContractEmbed(props: { contract: Contract; bets: Bet[] }) {
             contract={contract}
             bets={bets}
             isCreator={false}
+            user={null}
             disabled
           />
 

web/pages/experimental/home.tsx

@@ -0,0 +1,118 @@
+import React from 'react'
+import { useRouter } from 'next/router'
+import { PlusSmIcon } from '@heroicons/react/solid'
+
+import { Page } from 'web/components/page'
+import { Col } from 'web/components/layout/col'
+import { ContractSearch } from 'web/components/contract-search'
+import { User } from 'common/user'
+import { getUserAndPrivateUser } from 'web/lib/firebase/users'
+import { useTracking } from 'web/hooks/use-tracking'
+import { track } from 'web/lib/service/analytics'
+import { authenticateOnServer } from 'web/lib/firebase/server-auth'
+import { useSaveReferral } from 'web/hooks/use-save-referral'
+import { GetServerSideProps } from 'next'
+import { Sort } from 'web/hooks/use-sort-and-query-params'
+import { Button } from 'web/components/button'
+import { Spacer } from 'web/components/layout/spacer'
+import { useMemberGroups } from 'web/hooks/use-group'
+import { Group } from 'common/group'
+import { Title } from 'web/components/title'
+
+export const getServerSideProps: GetServerSideProps = async (ctx) => {
+  const creds = await authenticateOnServer(ctx)
+  const auth = creds ? await getUserAndPrivateUser(creds.user.uid) : null
+  return { props: { auth } }
+}
+
+const Home = (props: { auth: { user: User } | null }) => {
+  const user = props.auth ? props.auth.user : null
+
+  const router = useRouter()
+  useTracking('view home')
+
+  useSaveReferral()
+
+  const memberGroups = (useMemberGroups(user?.id) ?? []).filter(
+    (group) => group.contractIds.length > 0
+  )
+
+  return (
+    <Page>
+      <Col className="mx-auto mb-8 w-full">
+        <SearchSection label="Trending" sort="score" user={user} />
+        <SearchSection label="Newest" sort="newest" user={user} />
+        <SearchSection label="Closing soon" sort="close-date" user={user} />
+        {memberGroups.map((group) => (
+          <GroupSection key={group.id} group={group} user={user} />
+        ))}
+      </Col>
+      <button
+        type="button"
+        className="fixed bottom-[70px] right-3 inline-flex items-center rounded-full border border-transparent bg-indigo-600 p-3 text-white shadow-sm hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2 lg:hidden"
+        onClick={() => {
+          router.push('/create')
+          track('mobile create button')
+        }}
+      >
+        <PlusSmIcon className="h-8 w-8" aria-hidden="true" />
+      </button>
+    </Page>
+  )
+}
+
+function SearchSection(props: {
+  label: string
+  user: User | null
+  sort: Sort
+}) {
+  const { label, user, sort } = props
+
+  const router = useRouter()
+
+  return (
+    <Col>
+      <Title className="mx-2 !text-gray-800 sm:mx-0" text={label} />
+      <Spacer h={2} />
+      <ContractSearch user={user} defaultSort={sort} maxItems={4} noControls />
+      <Button
+        className="self-end"
+        color="blue"
+        size="sm"
+        onClick={() => router.push(`/home?s=${sort}`)}
+      >
+        See more
+      </Button>
+    </Col>
+  )
+}
+
+function GroupSection(props: { group: Group; user: User | null }) {
+  const { group, user } = props
+
+  const router = useRouter()
+
+  return (
+    <Col className="">
+      <Title className="mx-2 !text-gray-800 sm:mx-0" text={group.name} />
+      <Spacer h={2} />
+      <ContractSearch
+        user={user}
+        defaultSort={'score'}
+        additionalFilter={{ groupSlug: group.slug }}
+        maxItems={4}
+        noControls
+      />
+      <Button
+        className="mr-2 self-end"
+        color="blue"
+        size="sm"
+        onClick={() => router.push(`/group/${group.slug}`)}
+      >
+        See more
+      </Button>
+    </Col>
+  )
+}
+
+export default Home

web/pages/group/[...slugs]/index.tsx

@@ -33,12 +33,9 @@ import { LoadingIndicator } from 'web/components/loading-indicator'
 import { Modal } from 'web/components/layout/modal'
 import { ChoicesToggleGroup } from 'web/components/choices-toggle-group'
 import { toast } from 'react-hot-toast'
-import { useCommentsOnGroup } from 'web/hooks/use-comments'
-import { REFERRAL_AMOUNT } from 'common/user'
 import { ContractSearch } from 'web/components/contract-search'
 import { FollowList } from 'web/components/follow-list'
 import { SearchIcon } from '@heroicons/react/outline'
-import { useTipTxns } from 'web/hooks/use-tip-txns'
 import { JoinOrLeaveGroupButton } from 'web/components/groups/groups-button'
 import { searchInAny } from 'common/util/parse'
 import { CopyLinkButton } from 'web/components/copy-link-button'
@@ -47,7 +44,7 @@ import { useSaveReferral } from 'web/hooks/use-save-referral'
 import { Button } from 'web/components/button'
 import { listAllCommentsOnGroup } from 'web/lib/firebase/comments'
 import { GroupComment } from 'common/comment'
-import { GroupChat } from 'web/components/groups/group-chat'
+import { REFERRAL_AMOUNT } from 'common/economy'
 
 export const getStaticProps = fromPropz(getStaticPropz)
 export async function getStaticPropz(props: { params: { slugs: string[] } }) {
@@ -149,9 +146,6 @@ export default function GroupPage(props: {
   const page = slugs?.[1] as typeof groupSubpages[number]
 
   const group = useGroup(props.group?.id) ?? props.group
-  const tips = useTipTxns({ groupId: group?.id })
-
-  const messages = useCommentsOnGroup(group?.id) ?? props.messages
 
   const user = useUser()
 
@@ -201,21 +195,12 @@ export default function GroupPage(props: {
     />
   )
 
-  const chatTab = (
-    <GroupChat messages={messages} group={group} user={user} tips={tips} />
-  )
-
   const tabs = [
     {
       title: 'Markets',
       content: questionsTab,
       href: groupPath(group.slug, 'markets'),
     },
-    {
-      title: 'Chat',
-      content: chatTab,
-      href: groupPath(group.slug, 'chat'),
-    },
     {
       title: 'Leaderboards',
       content: leaderboard,

web/pages/home.tsx

@@ -71,6 +71,7 @@ const Home = (props: { auth: { user: User } | null }) => {
           backToHome={() => {
             history.back()
           }}
+          recommendedContracts={[]}
         />
       )}
     </>

web/pages/links.tsx

@@ -25,8 +25,8 @@ import { redirectIfLoggedOut } from 'web/lib/firebase/server-auth'
 import { ManalinkCardFromView } from 'web/components/manalink-card'
 import { Pagination } from 'web/components/pagination'
 import { Manalink } from 'common/manalink'
-import { REFERRAL_AMOUNT } from 'common/user'
 import { SiteLink } from 'web/components/site-link'
+import { REFERRAL_AMOUNT } from 'common/economy'
 
 const LINKS_PER_PAGE = 24
 

web/pages/notifications.tsx

@@ -34,7 +34,7 @@ import { groupPath } from 'web/lib/firebase/groups'
 import {
   BETTING_STREAK_BONUS_AMOUNT,
   UNIQUE_BETTOR_BONUS_AMOUNT,
-} from 'common/numeric-constants'
+} from 'common/economy'
 import { groupBy, sum, uniq } from 'lodash'
 import { track } from '@amplitude/analytics-browser'
 import { Pagination } from 'web/components/pagination'
@@ -44,6 +44,7 @@ import { redirectIfLoggedOut } from 'web/lib/firebase/server-auth'
 import { SiteLink } from 'web/components/site-link'
 import { NotificationSettings } from 'web/components/NotificationSettings'
 import { SEO } from 'web/components/SEO'
+import { useUser } from 'web/hooks/use-user'
 
 export const NOTIFICATIONS_PER_PAGE = 30
 const MULTIPLE_USERS_KEY = 'multipleUsers'
@@ -165,7 +166,7 @@ function NotificationsList(props: {
   if (!paginatedGroupedNotifications || !allGroupedNotifications) return <div />
 
   return (
-    <div className={'min-h-[100vh]'}>
+    <div className={'min-h-[100vh] text-sm'}>
       {paginatedGroupedNotifications.length === 0 && (
         <div className={'mt-2'}>
           You don't have any notifications. Try changing your settings to see
@@ -271,9 +272,17 @@ function IncomeNotificationGroupItem(props: {
     }
     return newNotifications
   }
-
+  const combinedNotifs = combineNotificationsByAddingNumericSourceTexts(
-  const combinedNotifs =
+    notifications.filter((n) => n.sourceType !== 'betting_streak_bonus')
-    combineNotificationsByAddingNumericSourceTexts(notifications)
+  )
+  // Because the server's reset time will never align with the client's, we may
+  // erroneously sum 2 betting streak bonuses, therefore just show the most recent
+  const mostRecentBettingStreakBonus = notifications
+    .filter((n) => n.sourceType === 'betting_streak_bonus')
+    .sort((a, b) => a.createdTime - b.createdTime)
+    .pop()
+  if (mostRecentBettingStreakBonus)
+    combinedNotifs.unshift(mostRecentBettingStreakBonus)
 
   return (
     <div
@@ -370,6 +379,8 @@ function IncomeNotificationItem(props: {
   const [highlighted] = useState(!notification.isSeen)
   const { width } = useWindowSize()
   const isMobile = (width && width < 768) || false
+  const user = useUser()
+
   useEffect(() => {
     setNotificationsAsSeen([notification])
   }, [notification])
@@ -388,20 +399,30 @@ function IncomeNotificationItem(props: {
       reasonText = !simple ? `tipped you on` : `in tips on`
     } else if (sourceType === 'betting_streak_bonus') {
       reasonText = 'for your'
+    } else if (sourceType === 'loan' && sourceText) {
+      reasonText = `of your invested bets returned as a`
     }
 
+    const streakInDays =
+      Date.now() - notification.createdTime > 24 * 60 * 60 * 1000
+        ? parseInt(sourceText ?? '0') / BETTING_STREAK_BONUS_AMOUNT
+        : user?.currentBettingStreak ?? 0
     const bettingStreakText =
       sourceType === 'betting_streak_bonus' &&
-      (sourceText
+      (sourceText ? `🔥 ${streakInDays} day Betting Streak` : 'Betting Streak')
-        ? `🔥 ${
-            parseInt(sourceText) / BETTING_STREAK_BONUS_AMOUNT
-          } day Betting Streak`
-        : 'Betting Streak')
 
     return (
       <>
         {reasonText}
-        {sourceType === 'betting_streak_bonus' ? (
+        {sourceType === 'loan' ? (
+          simple ? (
+            <span className={'ml-1 font-bold'}>🏦 Loan</span>
+          ) : (
+            <SiteLink className={'ml-1 font-bold'} href={'/loans'}>
+              🏦 Loan
+            </SiteLink>
+          )
+        ) : sourceType === 'betting_streak_bonus' ? (
           simple ? (
             <span className={'ml-1 font-bold'}>{bettingStreakText}</span>
           ) : (
@@ -445,6 +466,7 @@ function IncomeNotificationItem(props: {
     if (sourceType === 'challenge') return `${sourceSlug}`
     if (sourceType === 'betting_streak_bonus')
       return `/${sourceUserUsername}/?show=betting-streak`
+    if (sourceType === 'loan') return `/${sourceUserUsername}/?show=loans`
     if (sourceContractCreatorUsername && sourceContractSlug)
       return `/${sourceContractCreatorUsername}/${sourceContractSlug}#${getSourceIdForLinkComponent(
         sourceId ?? '',

web/pages/referrals.tsx

@@ -5,11 +5,11 @@ import { useUser } from 'web/hooks/use-user'
 import { Page } from 'web/components/page'
 import { useTracking } from 'web/hooks/use-tracking'
 import { redirectIfLoggedOut } from 'web/lib/firebase/server-auth'
-import { REFERRAL_AMOUNT } from 'common/user'
 import { CopyLinkButton } from 'web/components/copy-link-button'
 import { ENV_CONFIG } from 'common/envs/constants'
 import { InfoBox } from 'web/components/info-box'
 import { QRCode } from 'web/components/qr-code'
+import { REFERRAL_AMOUNT } from 'common/economy'
 
 export const getServerSideProps = redirectIfLoggedOut('/')
 

web/pages/server-sitemap.xml.tsx

@@ -1,23 +1,20 @@
-import { sortBy } from 'lodash'
 import { GetServerSideProps } from 'next'
 import { getServerSideSitemap, ISitemapField } from 'next-sitemap'
 
-import { DOMAIN } from 'common/envs/constants'
+import { listAllContracts } from 'web/lib/firebase/contracts'
-import { LiteMarket } from './api/v0/_types'
 
 export const getServerSideProps: GetServerSideProps = async (ctx) => {
-  // Fetching data from https://manifold.markets/api
+  const contracts = await listAllContracts(1000, undefined, 'popularityScore')
-  const response = await fetch(`https://${DOMAIN}/api/v0/markets`)
 
-  const liteMarkets = (await response.json()) as LiteMarket[]
+  const score = (popularity: number) => Math.tanh(Math.log10(popularity + 1))
-  const sortedMarkets = sortBy(liteMarkets, (m) => -m.volume24Hours)
 
-  const fields = sortedMarkets.map((market) => ({
+  const fields = contracts
-    // See https://www.sitemaps.org/protocol.html
+    .sort((x) => x.popularityScore ?? 0)
-    loc: market.url,
+    .map((market) => ({
+      loc: `https://manifold.markets/${market.creatorUsername}/${market.slug}`,
       changefreq: market.volume24Hours > 10 ? 'hourly' : 'daily',
-    priority: market.volume24Hours + market.volume7Days > 100 ? 0.7 : 0.1,
+      priority: score(market.popularityScore ?? 0),
-    // TODO: Add `lastmod` aka last modified time
+      lastmod: market.lastUpdatedTime,
     })) as ISitemapField[]
 
   return await getServerSideSitemap(ctx, fields)

web/public/sitemap-0.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">
-<url><loc>https://manifold.markets</loc><changefreq>hourly</changefreq><priority>1.0</priority></url>
-<url><loc>https://manifold.markets/home</loc><changefreq>hourly</changefreq><priority>0.2</priority></url>
-<url><loc>https://manifold.markets/leaderboards</loc><changefreq>daily</changefreq><priority>0.2</priority></url>
-</urlset>

web/public/sitemap.xml

@@ -1,4 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">
-<sitemap><loc>https://manifold.markets/sitemap-0.xml</loc></sitemap>
+<url><loc>https://manifold.markets</loc><changefreq>hourly</changefreq><priority>1.0</priority></url>
-</sitemapindex>
+<url><loc>https://manifold.markets/home</loc><changefreq>hourly</changefreq><priority>0.2</priority></url>
+<url><loc>https://manifold.markets/leaderboards</loc><changefreq>daily</changefreq><priority>0.2</priority></url>
+<url><loc>https://manifold.markets/add-funds</loc><changefreq>daily</changefreq><priority>0.2</priority></url>
+<url><loc>https://manifold.markets/challenges</loc><changefreq>daily</changefreq><priority>0.2</priority></url>
+<url><loc>https://manifold.markets/charity</loc><changefreq>daily</changefreq><priority>0.7</priority></url>
+<url><loc>https://manifold.markets/groups</loc><changefreq>daily</changefreq><priority>0.2</priority></url>
+</urlset>