56 lines
1.7 KiB
TypeScript
56 lines
1.7 KiB
TypeScript
import mangoStore from '@store/mangoStore'
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import { useMemo } from 'react'
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import useSelectedMarket from './useSelectedMarket'
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import {
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I80F48,
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Serum3Market,
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toUiDecimals,
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toUiDecimalsForQuote,
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} from '@blockworks-foundation/mango-v4'
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export default function useRemainingBorrowsInPeriod(
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isSwap?: boolean,
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isSwapTrigger?: boolean,
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) {
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const { selectedMarket } = useSelectedMarket()
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const { inputBank, outputBank } = mangoStore((s) => s.swap)
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const { side } = mangoStore((s) => s.tradeForm)
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const bank = useMemo(() => {
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if (isSwap && inputBank) {
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return inputBank
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} else if (isSwapTrigger && outputBank) {
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return outputBank
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} else {
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if (selectedMarket instanceof Serum3Market) {
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const group = mangoStore.getState().group
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let balanceBank
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if (side === 'buy') {
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balanceBank = group?.getFirstBankByTokenIndex(
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selectedMarket.quoteTokenIndex,
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)
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} else {
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balanceBank = group?.getFirstBankByTokenIndex(
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selectedMarket.baseTokenIndex,
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)
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}
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return balanceBank
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}
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}
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return
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}, [inputBank, isSwap, isSwapTrigger, outputBank, selectedMarket, side])
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const [remainingBorrowsInPeriod, timeToNextPeriod] = useMemo(() => {
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if (!bank) return [undefined, undefined]
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const borrowsInPeriod = toUiDecimalsForQuote(
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I80F48.fromI64(bank.netBorrowsInWindow).mul(bank.price),
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)
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const borrowLimit = toUiDecimals(bank.netBorrowLimitPerWindowQuote, 6)
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const remainingBorrows = borrowLimit - borrowsInPeriod
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const timeToNextPeriod = bank.getTimeToNextBorrowLimitWindowStartsTs()
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return [remainingBorrows, timeToNextPeriod]
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}, [bank])
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return { remainingBorrowsInPeriod, timeToNextPeriod }
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}
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