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fix: Estimate the value of low-denomination tokens #155

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fix: Estimate the value of low-denomination tokens #155

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4 changes: 2 additions & 2 deletions src/components/CurrencyInputPanel/index.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ import { Currency, Pair } from '@apeswapfinance/sdk'
import { Button, ChevronDownIcon, Text } from '@apeswapfinance/uikit'
import styled from 'styled-components'
import { darken } from 'polished'
// import EstimatedConvertDollar from 'components/swap/EstimatedConvertDollar'
import EstimatedConvertDollar from 'components/swap/EstimatedConvertDollar'
import { useCurrencyBalance } from '../../state/wallet/hooks'
import CurrencySearchModal from '../SearchModal/CurrencySearchModal'
import CurrencyLogo from '../CurrencyLogo'
Expand Down Expand Up @@ -183,7 +183,7 @@ export default function CurrencyInputPanel({
</Aligner>
</CurrencySelect>
</InputRow>
{/* <EstimatedConvertDollar currency={currency} typedValue={value}/> */}
<EstimatedConvertDollar currency={currency} typedValue={value}/>
</Container>
{!disableCurrencySelect && onCurrencySelect && (
<CurrencySearchModal
Expand Down
25 changes: 14 additions & 11 deletions src/components/swap/EstimatedConvertDollar.tsx
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Original file line number Diff line number Diff line change
@@ -1,9 +1,8 @@
import React, { useEffect, useState } from 'react'
import { tryParseAmount } from 'state/swap/hooks'
import { Field } from 'state/swap/actions'
import styled from 'styled-components'
import { useCurrency } from 'hooks/Tokens'
import { useTradeExactOut } from 'hooks/Trades'
import { useTradeExactIn } from 'hooks/Trades'

const EstimatedPriceDollar = styled.div`
padding: 0rem 0.75rem 0.75rem 1rem;
Expand All @@ -21,27 +20,31 @@ const EstimatedSymbol = styled.span`
`
const CURRENCY_BUSD_ID = '0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56'

export default function EstimatedConvertDollar({ currency, typedValue = null }: { currency: any; typedValue: any }) {
function CalculateRate (currency, typedValue) {

const [totalRate, setTotalRate] = useState(null);
const outputCurrency = useCurrency(CURRENCY_BUSD_ID)
const parsedAmount = tryParseAmount(typedValue, currency)
const parsedAmount2 = tryParseAmount('1', outputCurrency ?? undefined)
const trade = useTradeExactOut(currency, parsedAmount2)

const parsedAmounts = { [Field.INPUT]: trade?.inputAmount || parsedAmount }
const value = 1/Number(parsedAmounts[Field.INPUT]?.toExact())
const inputCurrency = useCurrency(CURRENCY_BUSD_ID)
const parsedAmount = tryParseAmount('1', inputCurrency ?? undefined)
const trade = useTradeExactIn(parsedAmount, currency ?? undefined)
const value = currency?.symbol === 'BUSD' ? 1 : Number(trade?.executionPrice.invert().toSignificant(6))

const decimals = value < 0.1 ? 1000000000 : 100;
const rate: any = Number(typedValue) * (Math.round((value) * decimals) / decimals);
const total = rate > 0.1 ? rate.toFixed(2) : rate;
useEffect(() => {
setTotalRate(total);
}, [total])
return trade ? totalRate : null;
}

export default function EstimatedConvertDollar({ currency, typedValue = null }: { currency: any; typedValue: any }) {

const totalRate = CalculateRate(currency, typedValue);
return (
<EstimatedPriceDollar>
<EstimatedSymbol>~</EstimatedSymbol>
{trade ? <span>${totalRate || 0}</span> : '-'}
{totalRate ? <span>${totalRate || 0}</span> : '-'}
</EstimatedPriceDollar>
)
}