import { useMemo } from 'react'; import { shallowEqual, useSelector } from 'react-redux'; import BigNumber from 'bignumber.js'; import { isEqual, uniqBy } from 'lodash'; import { getTokenFiatAmount } from '../helpers/utils/token-util'; import { getTokenExchangeRates, getCurrentCurrency, getSwapsDefaultToken, getCurrentChainId, getTokenList, } from '../selectors'; import { getConversionRate } from '../ducks/metamask/metamask'; import { getSwapsTokens } from '../ducks/swaps/swaps'; import { isSwapsDefaultTokenSymbol } from '../../shared/modules/swaps.utils'; import { toChecksumHexAddress } from '../../shared/modules/hexstring-utils'; import { TOKEN_BUCKET_PRIORITY } from '../../shared/constants/swaps'; import { useEqualityCheck } from './useEqualityCheck'; export function getRenderableTokenData( token, contractExchangeRates, conversionRate, currentCurrency, chainId, tokenList, ) { const { symbol, name, address, iconUrl, string, balance, decimals } = token; let contractExchangeRate; if (isSwapsDefaultTokenSymbol(symbol, chainId)) { contractExchangeRate = 1; } else if (string && conversionRate > 0) { // This condition improves performance significantly, because it only gets a contract exchange rate // if a token amount is truthy and conversion rate is higher than 0. contractExchangeRate = contractExchangeRates[toChecksumHexAddress(address)]; } const formattedFiat = getTokenFiatAmount( contractExchangeRate, conversionRate, currentCurrency, string, symbol, true, ) || ''; const rawFiat = formattedFiat ? getTokenFiatAmount( contractExchangeRate, conversionRate, currentCurrency, string, symbol, false, ) : ''; const usedIconUrl = iconUrl || tokenList[address?.toLowerCase()]?.iconUrl || token?.image; return { ...token, primaryLabel: symbol, secondaryLabel: name || tokenList[address?.toLowerCase()]?.name, rightPrimaryLabel: string && `${new BigNumber(string).round(6).toString()} ${symbol}`, rightSecondaryLabel: formattedFiat, iconUrl: usedIconUrl, identiconAddress: usedIconUrl ? null : address, balance, decimals, name: name || tokenList[address?.toLowerCase()]?.name, rawFiat, }; } export function useTokensToSearch({ usersTokens = [], topTokens = {}, shuffledTokensList, tokenBucketPriority = TOKEN_BUCKET_PRIORITY.OWNED, }) { const chainId = useSelector(getCurrentChainId); const tokenConversionRates = useSelector(getTokenExchangeRates, isEqual); const conversionRate = useSelector(getConversionRate); const currentCurrency = useSelector(getCurrentCurrency); const defaultSwapsToken = useSelector(getSwapsDefaultToken, shallowEqual); const tokenList = useSelector(getTokenList, isEqual); const memoizedTopTokens = useEqualityCheck(topTokens); const memoizedUsersToken = useEqualityCheck(usersTokens); const defaultToken = getRenderableTokenData( defaultSwapsToken, tokenConversionRates, conversionRate, currentCurrency, chainId, tokenList, ); const memoizedDefaultToken = useEqualityCheck(defaultToken); const swapsTokens = useSelector(getSwapsTokens, isEqual) || []; const tokensToSearch = swapsTokens.length ? swapsTokens : [ memoizedDefaultToken, ...shuffledTokensList.filter( (token) => token.symbol !== memoizedDefaultToken.symbol, ), ]; const memoizedTokensToSearch = useEqualityCheck(tokensToSearch); return useMemo(() => { const usersTokensAddressMap = memoizedUsersToken.reduce( (acc, token) => ({ ...acc, [token.address.toLowerCase()]: token }), {}, ); const tokensToSearchBuckets = { owned: [], top: [], others: [], }; const memoizedSwapsAndUserTokensWithoutDuplicities = uniqBy( [memoizedDefaultToken, ...memoizedTokensToSearch, ...memoizedUsersToken], (token) => token.address.toLowerCase(), ); memoizedSwapsAndUserTokensWithoutDuplicities.forEach((token) => { const renderableDataToken = getRenderableTokenData( { ...usersTokensAddressMap[token.address.toLowerCase()], ...token }, tokenConversionRates, conversionRate, currentCurrency, chainId, tokenList, ); if (tokenBucketPriority === TOKEN_BUCKET_PRIORITY.OWNED) { if ( isSwapsDefaultTokenSymbol(renderableDataToken.symbol, chainId) || usersTokensAddressMap[token.address.toLowerCase()] ) { tokensToSearchBuckets.owned.push(renderableDataToken); } else if (memoizedTopTokens[token.address.toLowerCase()]) { tokensToSearchBuckets.top[ memoizedTopTokens[token.address.toLowerCase()].index ] = renderableDataToken; } else { tokensToSearchBuckets.others.push(renderableDataToken); } } else if (memoizedTopTokens[token.address.toLowerCase()]) { tokensToSearchBuckets.top[ memoizedTopTokens[token.address.toLowerCase()].index ] = renderableDataToken; } else if ( isSwapsDefaultTokenSymbol(renderableDataToken.symbol, chainId) || usersTokensAddressMap[token.address.toLowerCase()] ) { tokensToSearchBuckets.owned.push(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(Boolean); if (tokenBucketPriority === TOKEN_BUCKET_PRIORITY.OWNED) { return [ ...tokensToSearchBuckets.owned, ...tokensToSearchBuckets.top, ...tokensToSearchBuckets.others, ]; } return [ ...tokensToSearchBuckets.top, ...tokensToSearchBuckets.owned, ...tokensToSearchBuckets.others, ]; }, [ memoizedTokensToSearch, memoizedUsersToken, memoizedTopTokens, tokenConversionRates, conversionRate, currentCurrency, memoizedDefaultToken, chainId, tokenList, tokenBucketPriority, ]); }