import { useMemo } from 'react' import { useSelector } from 'react-redux' import contractMap from 'eth-contract-metadata' import BigNumber from 'bignumber.js' import { isEqual, shuffle } from 'lodash' import { checksumAddress } from '../helpers/utils/util' import { getTokenFiatAmount } from '../helpers/utils/token-util' import { getTokenExchangeRates, getConversionRate, getCurrentCurrency, } from '../selectors' import { getSwapsTokens } from '../ducks/swaps/swaps' import { useSwapsEthToken } from './useSwapsEthToken' import { useEqualityCheck } from './useEqualityCheck' const tokenList = shuffle( Object.entries(contractMap) .map(([address, tokenData]) => ({ ...tokenData, address: address.toLowerCase(), })) .filter((tokenData) => Boolean(tokenData.erc20)), ) export function getRenderableTokenData( token, contractExchangeRates, conversionRate, currentCurrency, ) { const { symbol, name, address, iconUrl, string, balance, decimals } = token const formattedFiat = getTokenFiatAmount( symbol === 'ETH' ? 1 : contractExchangeRates[address], conversionRate, currentCurrency, string, symbol, true, ) || '' const rawFiat = getTokenFiatAmount( symbol === 'ETH' ? 1 : contractExchangeRates[address], conversionRate, currentCurrency, string, symbol, false, ) || '' const usedIconUrl = iconUrl || (contractMap[checksumAddress(address)] && `images/contract/${contractMap[checksumAddress(address)].logo}`) return { ...token, primaryLabel: symbol, secondaryLabel: name || contractMap[checksumAddress(address)]?.name, rightPrimaryLabel: string && `${new BigNumber(string).round(6).toString()} ${symbol}`, rightSecondaryLabel: formattedFiat, iconUrl: usedIconUrl, identiconAddress: usedIconUrl ? null : address, balance, decimals, name: name || contractMap[checksumAddress(address)]?.name, rawFiat, } } export function useTokensToSearch({ providedTokens, usersTokens = [], topTokens = {}, onlyEth, singleToken, }) { const tokenConversionRates = useSelector(getTokenExchangeRates, isEqual) const conversionRate = useSelector(getConversionRate) const currentCurrency = useSelector(getCurrentCurrency) const memoizedTopTokens = useEqualityCheck(topTokens) const memoizedUsersToken = useEqualityCheck(usersTokens) const swapsEthToken = useSwapsEthToken() const ethToken = getRenderableTokenData( swapsEthToken, tokenConversionRates, conversionRate, currentCurrency, ) const memoizedEthToken = useEqualityCheck(ethToken) const swapsTokens = useSelector(getSwapsTokens) || [] let tokensToSearch if (onlyEth) { tokensToSearch = [memoizedEthToken] } else if (singleToken) { tokensToSearch = providedTokens } else if (providedTokens) { tokensToSearch = [memoizedEthToken, ...providedTokens] } else if (swapsTokens.length) { tokensToSearch = [memoizedEthToken, ...swapsTokens] } else { tokensToSearch = [memoizedEthToken, ...tokenList] } const memoizedTokensToSearch = useEqualityCheck(tokensToSearch) return useMemo(() => { const usersTokensAddressMap = memoizedUsersToken.reduce( (acc, token) => ({ ...acc, [token.address]: token }), {}, ) const tokensToSearchBuckets = { owned: singleToken ? [] : [memoizedEthToken], top: [], others: [], } memoizedTokensToSearch.forEach((token) => { const renderableDataToken = getRenderableTokenData( { ...usersTokensAddressMap[token.address], ...token }, tokenConversionRates, conversionRate, currentCurrency, ) if ( usersTokensAddressMap[token.address] && (renderableDataToken.symbol === 'ETH' || Number(renderableDataToken.balance ?? 0) !== 0) ) { tokensToSearchBuckets.owned.push(renderableDataToken) } else if (memoizedTopTokens[token.address]) { tokensToSearchBuckets.top[ memoizedTopTokens[token.address].index ] = renderableDataToken } else { tokensToSearchBuckets.others.push(renderableDataToken) } }) tokensToSearchBuckets.owned = tokensToSearchBuckets.owned.sort( ({ rawFiat }, { rawFiat: secondRawFiat }) => { return new BigNumber(rawFiat || 0).gt(secondRawFiat || 0) ? -1 : 1 }, ) tokensToSearchBuckets.top = tokensToSearchBuckets.top.filter( (token) => token, ) return [ ...tokensToSearchBuckets.owned, ...tokensToSearchBuckets.top, ...tokensToSearchBuckets.others, ] }, [ memoizedTokensToSearch, memoizedUsersToken, tokenConversionRates, conversionRate, currentCurrency, memoizedTopTokens, memoizedEthToken, singleToken, ]) }