180 lines
5.5 KiB
TypeScript
180 lines
5.5 KiB
TypeScript
import { BigInt } from '@graphprotocol/graph-ts'
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import {
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ExchangeActivated,
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ExchangeAllowedSwapperChanged,
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ExchangeCreated,
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ExchangeDeactivated,
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ExchangeMintStateChanged,
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ExchangeRateChanged,
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Swapped
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} from '../@types/FixedRateExchange/FixedRateExchange'
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import {
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FixedRateExchange,
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FixedRateExchangeSwap,
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FixedRateExchangeUpdate
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} from '../@types/schema'
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import { getFixedRateExchange, getUpdateOrSwapId } from './utils/fixedRateUtils'
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import { weiToDecimal } from './utils/generic'
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import { getToken } from './utils/tokenUtils'
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import { getUser } from './utils/userUtils'
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export function handleExchangeCreated(event: ExchangeCreated): void {
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const fixedRateExchange = new FixedRateExchange(
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event.params.exchangeId.toHexString()
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)
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const user = getUser(event.params.exchangeOwner.toHexString())
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fixedRateExchange.owner = user.id
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fixedRateExchange.datatoken = getToken(
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event.params.datatoken.toHexString()
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).id
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fixedRateExchange.baseToken = getToken(
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event.params.baseToken.toHexString()
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).id
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fixedRateExchange.active = false
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fixedRateExchange.price = weiToDecimal(
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event.params.fixedRate.toBigDecimal(),
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BigInt.fromI32(18).toI32()
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)
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fixedRateExchange.createdTimestamp = event.block.timestamp.toI32()
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fixedRateExchange.tx = event.transaction.hash.toHex()
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fixedRateExchange.block = event.block.number.toI32()
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fixedRateExchange.save()
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}
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export function handleRateChange(event: ExchangeRateChanged): void {
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const fixedRateExchange = getFixedRateExchange(
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event.params.exchangeId.toHex()
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)
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const newExchangeUpdate = new FixedRateExchangeUpdate(
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getUpdateOrSwapId(
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event.transaction.hash.toHex(),
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event.params.exchangeId.toHex()
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)
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)
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newExchangeUpdate.oldPrice = fixedRateExchange.price
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newExchangeUpdate.createdTimestamp = event.block.timestamp.toI32()
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newExchangeUpdate.tx = event.transaction.hash.toHex()
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newExchangeUpdate.block = event.block.number.toI32()
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fixedRateExchange.price = weiToDecimal(
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event.params.newRate.toBigDecimal(),
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BigInt.fromI32(18).toI32()
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)
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newExchangeUpdate.newPrice = fixedRateExchange.price
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newExchangeUpdate.save()
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fixedRateExchange.save()
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}
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export function handleMintStateChanged(event: ExchangeMintStateChanged): void {
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const fixedRateExchange = getFixedRateExchange(
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event.params.exchangeId.toHex()
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)
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fixedRateExchange.withMint = event.params.withMint
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fixedRateExchange.save()
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}
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// TODO: implement fre updates/history for changes
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export function handleActivated(event: ExchangeActivated): void {
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const fixedRateExchange = getFixedRateExchange(
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event.params.exchangeId.toHex()
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)
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const newExchangeUpdate = new FixedRateExchangeUpdate(
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getUpdateOrSwapId(
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event.transaction.hash.toHex(),
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event.params.exchangeId.toHex()
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)
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)
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newExchangeUpdate.oldActive = fixedRateExchange.active
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newExchangeUpdate.newActive = true
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newExchangeUpdate.createdTimestamp = event.block.timestamp.toI32()
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newExchangeUpdate.tx = event.transaction.hash.toHex()
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newExchangeUpdate.block = event.block.number.toI32()
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fixedRateExchange.active = true
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newExchangeUpdate.save()
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fixedRateExchange.save()
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}
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export function handleDeactivated(event: ExchangeDeactivated): void {
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const fixedRateExchange = getFixedRateExchange(
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event.params.exchangeId.toHex()
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)
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const newExchangeUpdate = new FixedRateExchangeUpdate(
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getUpdateOrSwapId(
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event.transaction.hash.toHex(),
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event.params.exchangeId.toHex()
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)
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)
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newExchangeUpdate.oldActive = fixedRateExchange.active
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newExchangeUpdate.newActive = false
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newExchangeUpdate.createdTimestamp = event.block.timestamp.toI32()
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newExchangeUpdate.tx = event.transaction.hash.toHex()
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newExchangeUpdate.block = event.block.number.toI32()
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fixedRateExchange.active = false
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newExchangeUpdate.save()
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fixedRateExchange.save()
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}
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export function handleAllowedSwapperChanged(
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event: ExchangeAllowedSwapperChanged
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): void {
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const fixedRateExchange = getFixedRateExchange(
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event.params.exchangeId.toHex()
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)
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const newExchangeUpdate = new FixedRateExchangeUpdate(
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getUpdateOrSwapId(
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event.transaction.hash.toHex(),
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event.params.exchangeId.toHex()
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)
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)
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newExchangeUpdate.createdTimestamp = event.block.timestamp.toI32()
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newExchangeUpdate.tx = event.transaction.hash.toHex()
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newExchangeUpdate.block = event.block.number.toI32()
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newExchangeUpdate.oldAllowedSwapper = fixedRateExchange.allowedSwapper
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fixedRateExchange.allowedSwapper = event.params.allowedSwapper.toHex()
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newExchangeUpdate.newAllowedSwapper = fixedRateExchange.allowedSwapper
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newExchangeUpdate.save()
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fixedRateExchange.save()
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}
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// TODO: implement market fee, opf fee
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export function handleSwap(event: Swapped): void {
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const fixedRateExchange = getFixedRateExchange(
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event.params.exchangeId.toHex()
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)
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const swap = new FixedRateExchangeSwap(
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getUpdateOrSwapId(
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event.transaction.hash.toHex(),
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event.params.exchangeId.toHex()
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)
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)
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swap.createdTimestamp = event.block.timestamp.toI32()
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swap.tx = event.transaction.hash.toHex()
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swap.block = event.block.number.toI32()
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swap.exchangeId = event.params.exchangeId.toHex()
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swap.by = getUser(event.params.by.toHex()).id
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// we need to fetch the decimals of the base token
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const baseToken = getToken(fixedRateExchange.baseToken)
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swap.baseTokenAmount = weiToDecimal(
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event.params.baseTokenSwappedAmount.toBigDecimal(),
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BigInt.fromI32(baseToken.decimals).toI32()
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)
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swap.dataTokenAmount = weiToDecimal(
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event.params.datatokenSwappedAmount.toBigDecimal(),
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BigInt.fromI32(18).toI32()
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)
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swap.save()
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}
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