0ec15ff2f8
* add subsidy * drizzle liquidity * update liquidity panel * remove addliquidity * update cloud functions index * remove json endpoints * imports * drizzle liquidity: add velocity; dev script; run every minute * adjust speed * logging * liquidity button, dialog * modal size * modal * info table * pay back excess liquidity * remove client withdrawal * house liquidity subsidy * disable liquidity button if market resolved or closed * format tip amount
79 lines
2.5 KiB
TypeScript
79 lines
2.5 KiB
TypeScript
import * as admin from 'firebase-admin'
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import { z } from 'zod'
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import { Contract, CPMMContract } from '../../common/contract'
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import { User } from '../../common/user'
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import { getNewLiquidityProvision } from '../../common/add-liquidity'
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import { APIError, newEndpoint, validate } from './api'
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const bodySchema = z.object({
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contractId: z.string(),
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amount: z.number().gt(0),
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})
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export const addsubsidy = newEndpoint({}, async (req, auth) => {
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const { amount, contractId } = validate(bodySchema, req.body)
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if (!isFinite(amount) || amount < 1) throw new APIError(400, 'Invalid amount')
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// run as transaction to prevent race conditions
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return await firestore.runTransaction(async (transaction) => {
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const userDoc = firestore.doc(`users/${auth.uid}`)
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const userSnap = await transaction.get(userDoc)
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if (!userSnap.exists) throw new APIError(400, 'User not found')
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const user = userSnap.data() as User
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const contractDoc = firestore.doc(`contracts/${contractId}`)
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const contractSnap = await transaction.get(contractDoc)
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if (!contractSnap.exists) throw new APIError(400, 'Invalid contract')
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const contract = contractSnap.data() as Contract
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if (
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contract.mechanism !== 'cpmm-1' ||
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(contract.outcomeType !== 'BINARY' &&
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contract.outcomeType !== 'PSEUDO_NUMERIC')
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)
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throw new APIError(400, 'Invalid contract')
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const { closeTime } = contract
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if (closeTime && Date.now() > closeTime)
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throw new APIError(400, 'Trading is closed')
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if (user.balance < amount) throw new APIError(400, 'Insufficient balance')
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const newLiquidityProvisionDoc = firestore
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.collection(`contracts/${contractId}/liquidity`)
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.doc()
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const { newLiquidityProvision, newTotalLiquidity, newSubsidyPool } =
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getNewLiquidityProvision(
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user.id,
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amount,
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contract,
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newLiquidityProvisionDoc.id
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)
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transaction.update(contractDoc, {
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subsidyPool: newSubsidyPool,
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totalLiquidity: newTotalLiquidity,
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} as Partial<CPMMContract>)
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const newBalance = user.balance - amount
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const newTotalDeposits = user.totalDeposits - amount
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if (!isFinite(newBalance)) {
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throw new APIError(500, 'Invalid user balance for ' + user.username)
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}
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transaction.update(userDoc, {
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balance: newBalance,
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totalDeposits: newTotalDeposits,
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})
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transaction.create(newLiquidityProvisionDoc, newLiquidityProvision)
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return newLiquidityProvision
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})
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})
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const firestore = admin.firestore()
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