mango-ui-v3/hooks/useFees.tsx

90 lines
2.7 KiB
TypeScript

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