Give all users 5 free markets

common/economy.ts

@@ -14,3 +14,4 @@ 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/prod.ts

@@ -35,6 +35,7 @@ export type Economy = {
   BETTING_STREAK_BONUS_AMOUNT?: number
   BETTING_STREAK_BONUS_MAX?: number
   BETTING_STREAK_RESET_HOUR?: number
+  FREE_MARKETS_PER_USER_MAX?: number
 }
 
 type FirebaseConfig = {

common/user.ts

@@ -43,6 +43,7 @@ export type User = {
   lastBetTime?: number
   currentBettingStreak?: number
   hasSeenContractFollowModal?: boolean
+  freeMarketsCreated?: number
 }
 
 export type PrivateUser = {

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 } from '../../common/economy'
+import { FIXED_ANTE, FREE_MARKETS_PER_USER_MAX } from '../../common/economy'
 import {
+  DEV_HOUSE_LIQUIDITY_PROVIDER_ID,
   getCpmmInitialLiquidity,
   getFreeAnswerAnte,
   getMultipleChoiceAntes,
   getNumericAnte,
+  HOUSE_LIQUIDITY_PROVIDER_ID,
 } from '../../common/antes'
 import { Answer, getNoneAnswer } from '../../common/answer'
 import { getNewContract } from '../../common/new-contract'
@@ -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/on-create-liquidity-provision.ts

@@ -1,8 +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}')
@@ -11,7 +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)

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/economy'
+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() &&
@@ -461,12 +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>
+          )}
 
-          <div className="label-text text-neutral pl-1">
-            {formatMoney(ante)}
-          </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