76 lines
2.3 KiB
TypeScript
76 lines
2.3 KiB
TypeScript
import {
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CENTIBPS_PER_UNIT,
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getMarketIndexBySymbol,
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getSpotMarketByBaseSymbol,
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PerpMarket,
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} from '@blockworks-foundation/mango-client'
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import useSrmAccount from '../hooks/useSrmAccount'
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import { mangoGroupConfigSelector } from '../stores/selectors'
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import useMangoStore from '../stores/useMangoStore'
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export default function useFees(): { makerFee: number; takerFee: number } {
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const { rates } = useSrmAccount()
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const mangoGroup = useMangoStore((s) => s.selectedMangoGroup.current)
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const mangoGroupConfig = useMangoStore((s) => s.selectedMangoGroup.config)
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const marketConfig = useMangoStore((s) => s.selectedMarket.config)
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const market = useMangoStore((s) => s.selectedMarket.current)
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const mangoAccount = useMangoStore((s) => s.selectedMangoAccount.current)
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const mangoCache = useMangoStore((s) => s.selectedMangoGroup.cache)
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const groupConfig = useMangoStore(mangoGroupConfigSelector)
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const marketIndex = getMarketIndexBySymbol(
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mangoGroupConfig,
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marketConfig.baseSymbol
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)
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if (!mangoGroup || !market) return { makerFee: 0, takerFee: 0 }
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let takerFee: number, makerFee: number
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let discount = 0
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let refSurcharge = 0
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if (market instanceof PerpMarket) {
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takerFee = parseFloat(
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mangoGroup.perpMarkets[marketIndex].takerFee.toFixed()
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)
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makerFee = parseFloat(
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mangoGroup.perpMarkets[marketIndex].makerFee.toFixed()
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)
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// @ts-ignore
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refSurcharge = mangoGroup.refSurchargeCentibps / CENTIBPS_PER_UNIT
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// @ts-ignore
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const refShare = mangoGroup.refShareCentibps / CENTIBPS_PER_UNIT
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const mngoConfig = getSpotMarketByBaseSymbol(groupConfig, 'MNGO')
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const mngoRequired =
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mangoGroup.refMngoRequired.toNumber() /
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Math.pow(10, mngoConfig.baseDecimals)
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if (mangoAccount) {
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const mngoBalance = mangoAccount
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.getUiDeposit(
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mangoCache.rootBankCache[mngoConfig.marketIndex],
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mangoGroup,
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mngoConfig.marketIndex
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)
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.toNumber()
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const hasReferrer = useMangoStore.getState().referrerPk
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if (mngoBalance >= mngoRequired) {
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discount = refSurcharge
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} else {
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discount = hasReferrer ? refSurcharge - refShare : 0
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}
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}
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} else {
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takerFee = rates.takerWithRebate
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makerFee = rates.maker
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}
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return {
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makerFee: makerFee,
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takerFee: takerFee + refSurcharge - discount,
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}
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}
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