mirror of
https://github.com/kremalicious/metamask-extension.git
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694 lines
18 KiB
JavaScript
694 lines
18 KiB
JavaScript
import BigNumber from 'bignumber.js';
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import abi from 'human-standard-token-abi';
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import {
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SWAPS_CHAINID_DEFAULT_TOKEN_MAP,
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ALLOWED_CONTRACT_ADDRESSES,
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ETHEREUM,
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POLYGON,
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BSC,
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GOERLI,
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AVALANCHE,
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SWAPS_API_V2_BASE_URL,
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SWAPS_DEV_API_V2_BASE_URL,
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SWAPS_CLIENT_ID,
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SWAPS_WRAPPED_TOKENS_ADDRESSES,
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} from '../../../shared/constants/swaps';
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import {
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isSwapsDefaultTokenAddress,
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isSwapsDefaultTokenSymbol,
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} from '../../../shared/modules/swaps.utils';
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import { CHAIN_IDS, CURRENCY_SYMBOLS } from '../../../shared/constants/network';
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import { getValueFromWeiHex } from '../../helpers/utils/conversions.util';
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import { formatCurrency } from '../../helpers/utils/confirm-tx.util';
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import fetchWithCache from '../../../shared/lib/fetch-with-cache';
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import { isValidHexAddress } from '../../../shared/modules/hexstring-utils';
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import {
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calcGasTotal,
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calcTokenAmount,
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decimalToHex,
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toPrecisionWithoutTrailingZeros,
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} from '../../../shared/lib/transactions-controller-utils';
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import {
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calcTokenValue,
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constructTxParams,
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getBaseApi,
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QUOTE_VALIDATORS,
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truthyString,
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validateData,
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} from '../../../shared/lib/swaps-utils';
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import { SECOND } from '../../../shared/constants/time';
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const CACHE_REFRESH_FIVE_MINUTES = 300000;
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const USD_CURRENCY_CODE = 'usd';
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const clientIdHeader = { 'X-Client-Id': SWAPS_CLIENT_ID };
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const TOKEN_VALIDATORS = [
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{
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property: 'address',
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type: 'string',
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validator: (input) => isValidHexAddress(input, { allowNonPrefixed: false }),
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},
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{
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property: 'symbol',
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type: 'string',
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validator: (string) => truthyString(string) && string.length <= 12,
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},
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{
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property: 'decimals',
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type: 'string|number',
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validator: (string) => Number(string) >= 0 && Number(string) <= 36,
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},
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];
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const TOP_ASSET_VALIDATORS = TOKEN_VALIDATORS.slice(0, 2);
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const AGGREGATOR_METADATA_VALIDATORS = [
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{
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property: 'color',
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type: 'string',
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validator: (string) => Boolean(string.match(/^#[A-Fa-f0-9]+$/u)),
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},
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{
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property: 'title',
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type: 'string',
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validator: truthyString,
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},
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{
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property: 'icon',
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type: 'string',
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validator: (string) => Boolean(string.match(/^data:image/u)),
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},
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];
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const isValidDecimalNumber = (string) =>
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!isNaN(string) && string.match(/^[.0-9]+$/u) && !isNaN(parseFloat(string));
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const SWAP_GAS_PRICE_VALIDATOR = [
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{
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property: 'SafeGasPrice',
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type: 'string',
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validator: isValidDecimalNumber,
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},
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{
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property: 'ProposeGasPrice',
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type: 'string',
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validator: isValidDecimalNumber,
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},
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{
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property: 'FastGasPrice',
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type: 'string',
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validator: isValidDecimalNumber,
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},
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];
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export const shouldEnableDirectWrapping = (
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chainId,
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sourceToken,
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destinationToken,
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) => {
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if (!sourceToken || !destinationToken) {
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return false;
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}
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const wrappedToken = SWAPS_WRAPPED_TOKENS_ADDRESSES[chainId];
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const nativeToken = SWAPS_CHAINID_DEFAULT_TOKEN_MAP[chainId]?.address;
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const sourceTokenLowerCase = sourceToken.toLowerCase();
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const destinationTokenLowerCase = destinationToken.toLowerCase();
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return (
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(sourceTokenLowerCase === wrappedToken &&
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destinationTokenLowerCase === nativeToken) ||
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(sourceTokenLowerCase === nativeToken &&
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destinationTokenLowerCase === wrappedToken)
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);
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};
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export async function fetchTradesInfo(
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{
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slippage,
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sourceToken,
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sourceDecimals,
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destinationToken,
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value,
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fromAddress,
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exchangeList,
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},
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{ chainId },
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) {
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const urlParams = {
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destinationToken,
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sourceToken,
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sourceAmount: calcTokenValue(value, sourceDecimals).toString(10),
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slippage,
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timeout: SECOND * 10,
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walletAddress: fromAddress,
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};
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if (exchangeList) {
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urlParams.exchangeList = exchangeList;
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}
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if (shouldEnableDirectWrapping(chainId, sourceToken, destinationToken)) {
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urlParams.enableDirectWrapping = true;
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}
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const queryString = new URLSearchParams(urlParams).toString();
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const tradeURL = `${getBaseApi('trade', chainId)}${queryString}`;
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const tradesResponse = await fetchWithCache(
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tradeURL,
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{ method: 'GET', headers: clientIdHeader },
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{ cacheRefreshTime: 0, timeout: SECOND * 15 },
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);
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const newQuotes = tradesResponse.reduce((aggIdTradeMap, quote) => {
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if (
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quote.trade &&
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!quote.error &&
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validateData(QUOTE_VALIDATORS, quote, tradeURL)
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) {
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const constructedTrade = constructTxParams({
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to: quote.trade.to,
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from: quote.trade.from,
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data: quote.trade.data,
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amount: decimalToHex(quote.trade.value),
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gas: decimalToHex(quote.maxGas),
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});
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let { approvalNeeded } = quote;
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if (approvalNeeded) {
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approvalNeeded = constructTxParams({
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...approvalNeeded,
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});
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}
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return {
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...aggIdTradeMap,
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[quote.aggregator]: {
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...quote,
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slippage,
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trade: constructedTrade,
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approvalNeeded,
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},
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};
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}
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return aggIdTradeMap;
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}, {});
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return newQuotes;
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}
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export async function fetchToken(contractAddress, chainId) {
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const tokenUrl = getBaseApi('token', chainId);
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const token = await fetchWithCache(
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`${tokenUrl}?address=${contractAddress}`,
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{ method: 'GET', headers: clientIdHeader },
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{ cacheRefreshTime: CACHE_REFRESH_FIVE_MINUTES },
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);
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return token;
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}
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export async function fetchTokens(chainId) {
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const tokensUrl = getBaseApi('tokens', chainId);
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const tokens = await fetchWithCache(
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tokensUrl,
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{ method: 'GET', headers: clientIdHeader },
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{ cacheRefreshTime: CACHE_REFRESH_FIVE_MINUTES },
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);
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const logError = false;
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const filteredTokens = [
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SWAPS_CHAINID_DEFAULT_TOKEN_MAP[chainId],
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...tokens.filter((token) => {
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return (
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validateData(TOKEN_VALIDATORS, token, tokensUrl, logError) &&
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!(
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isSwapsDefaultTokenSymbol(token.symbol, chainId) ||
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isSwapsDefaultTokenAddress(token.address, chainId)
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)
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);
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}),
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];
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return filteredTokens;
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}
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export async function fetchAggregatorMetadata(chainId) {
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const aggregatorMetadataUrl = getBaseApi('aggregatorMetadata', chainId);
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const aggregators = await fetchWithCache(
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aggregatorMetadataUrl,
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{ method: 'GET', headers: clientIdHeader },
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{ cacheRefreshTime: CACHE_REFRESH_FIVE_MINUTES },
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);
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const filteredAggregators = {};
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for (const aggKey in aggregators) {
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if (
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validateData(
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AGGREGATOR_METADATA_VALIDATORS,
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aggregators[aggKey],
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aggregatorMetadataUrl,
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)
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) {
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filteredAggregators[aggKey] = aggregators[aggKey];
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}
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}
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return filteredAggregators;
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}
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export async function fetchTopAssets(chainId) {
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const topAssetsUrl = getBaseApi('topAssets', chainId);
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const response =
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(await fetchWithCache(
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topAssetsUrl,
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{ method: 'GET', headers: clientIdHeader },
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{ cacheRefreshTime: CACHE_REFRESH_FIVE_MINUTES },
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)) || [];
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const topAssetsMap = response.reduce((_topAssetsMap, asset, index) => {
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if (validateData(TOP_ASSET_VALIDATORS, asset, topAssetsUrl)) {
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return { ..._topAssetsMap, [asset.address]: { index: String(index) } };
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}
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return _topAssetsMap;
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}, {});
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return topAssetsMap;
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}
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export async function fetchSwapsFeatureFlags() {
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const v2ApiBaseUrl = process.env.SWAPS_USE_DEV_APIS
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? SWAPS_DEV_API_V2_BASE_URL
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: SWAPS_API_V2_BASE_URL;
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const response = await fetchWithCache(
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`${v2ApiBaseUrl}/featureFlags`,
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{ method: 'GET', headers: clientIdHeader },
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{ cacheRefreshTime: 600000 },
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);
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return response;
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}
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export async function fetchTokenPrice(address) {
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const query = `contract_addresses=${address}&vs_currencies=eth`;
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const prices = await fetchWithCache(
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`https://api.coingecko.com/api/v3/simple/token_price/ethereum?${query}`,
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{ method: 'GET' },
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{ cacheRefreshTime: 60000 },
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);
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return prices && prices[address]?.eth;
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}
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export async function fetchTokenBalance(address, userAddress) {
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const tokenContract = global.eth.contract(abi).at(address);
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const tokenBalancePromise = tokenContract
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? tokenContract.balanceOf(userAddress)
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: Promise.resolve();
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const usersToken = await tokenBalancePromise;
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return usersToken;
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}
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export async function fetchSwapsGasPrices(chainId) {
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const gasPricesUrl = getBaseApi('gasPrices', chainId);
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const response = await fetchWithCache(
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gasPricesUrl,
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{ method: 'GET', headers: clientIdHeader },
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{ cacheRefreshTime: 30000 },
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);
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const responseIsValid = validateData(
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SWAP_GAS_PRICE_VALIDATOR,
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response,
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gasPricesUrl,
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);
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if (!responseIsValid) {
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throw new Error(`${gasPricesUrl} response is invalid`);
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}
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const {
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SafeGasPrice: safeLow,
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ProposeGasPrice: average,
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FastGasPrice: fast,
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} = response;
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return {
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safeLow,
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average,
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fast,
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};
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}
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export const getFeeForSmartTransaction = ({
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chainId,
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currentCurrency,
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conversionRate,
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USDConversionRate,
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nativeCurrencySymbol,
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feeInWeiDec,
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}) => {
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const feeInWeiHex = decimalToHex(feeInWeiDec);
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const ethFee = getValueFromWeiHex({
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value: feeInWeiHex,
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toDenomination: CURRENCY_SYMBOLS.ETH,
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numberOfDecimals: 5,
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});
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const rawNetworkFees = getValueFromWeiHex({
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value: feeInWeiHex,
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toCurrency: currentCurrency,
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conversionRate,
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numberOfDecimals: 2,
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});
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let feeInUsd;
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if (currentCurrency === USD_CURRENCY_CODE) {
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feeInUsd = rawNetworkFees;
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} else {
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feeInUsd = getValueFromWeiHex({
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value: feeInWeiHex,
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toCurrency: USD_CURRENCY_CODE,
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conversionRate: USDConversionRate,
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numberOfDecimals: 2,
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});
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}
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const formattedNetworkFee = formatCurrency(rawNetworkFees, currentCurrency);
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const chainCurrencySymbolToUse =
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nativeCurrencySymbol || SWAPS_CHAINID_DEFAULT_TOKEN_MAP[chainId].symbol;
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return {
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feeInUsd,
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feeInFiat: formattedNetworkFee,
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feeInEth: `${ethFee} ${chainCurrencySymbolToUse}`,
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rawEthFee: ethFee,
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};
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};
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export function getRenderableNetworkFeesForQuote({
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tradeGas,
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approveGas,
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gasPrice,
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currentCurrency,
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conversionRate,
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USDConversionRate,
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tradeValue,
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sourceSymbol,
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sourceAmount,
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chainId,
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nativeCurrencySymbol,
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}) {
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const totalGasLimitForCalculation = new BigNumber(tradeGas || '0x0', 16)
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.plus(approveGas || '0x0', 16)
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.toString(16);
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const gasTotalInWeiHex = calcGasTotal(totalGasLimitForCalculation, gasPrice);
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const nonGasFee = new BigNumber(tradeValue, 16)
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.minus(
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isSwapsDefaultTokenSymbol(sourceSymbol, chainId) ? sourceAmount : 0,
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10,
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)
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.toString(16);
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const totalWeiCost = new BigNumber(gasTotalInWeiHex, 16)
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.plus(nonGasFee, 16)
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.toString(16);
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const ethFee = getValueFromWeiHex({
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value: totalWeiCost,
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toDenomination: 'ETH',
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numberOfDecimals: 5,
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});
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const rawNetworkFees = getValueFromWeiHex({
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value: totalWeiCost,
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toCurrency: currentCurrency,
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conversionRate,
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numberOfDecimals: 2,
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});
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const formattedNetworkFee = formatCurrency(rawNetworkFees, currentCurrency);
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let feeInUsd;
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if (currentCurrency === USD_CURRENCY_CODE) {
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feeInUsd = rawNetworkFees;
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} else {
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feeInUsd = getValueFromWeiHex({
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value: totalWeiCost,
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toCurrency: USD_CURRENCY_CODE,
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conversionRate: USDConversionRate,
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numberOfDecimals: 2,
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});
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}
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const chainCurrencySymbolToUse =
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nativeCurrencySymbol || SWAPS_CHAINID_DEFAULT_TOKEN_MAP[chainId].symbol;
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return {
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rawNetworkFees,
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feeInUsd,
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rawEthFee: ethFee,
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feeInFiat: formattedNetworkFee,
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feeInEth: `${ethFee} ${chainCurrencySymbolToUse}`,
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nonGasFee,
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};
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}
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export function quotesToRenderableData(
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quotes,
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gasPrice,
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conversionRate,
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currentCurrency,
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approveGas,
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tokenConversionRates,
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chainId,
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smartTransactionEstimatedGas,
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nativeCurrencySymbol,
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) {
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return Object.values(quotes).map((quote) => {
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const {
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destinationAmount = 0,
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sourceAmount = 0,
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sourceTokenInfo,
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destinationTokenInfo,
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slippage,
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aggType,
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aggregator,
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gasEstimateWithRefund,
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averageGas,
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fee,
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trade,
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} = quote;
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const sourceValue = calcTokenAmount(
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sourceAmount,
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sourceTokenInfo.decimals,
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).toString(10);
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const destinationValue = calcTokenAmount(
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destinationAmount,
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destinationTokenInfo.decimals,
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).toPrecision(8);
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let feeInFiat = null;
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let feeInEth = null;
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let rawNetworkFees = null;
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let rawEthFee = null;
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({ feeInFiat, feeInEth, rawNetworkFees, rawEthFee } =
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getRenderableNetworkFeesForQuote({
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tradeGas: gasEstimateWithRefund || decimalToHex(averageGas || 800000),
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approveGas,
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gasPrice,
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currentCurrency,
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conversionRate,
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tradeValue: trade.value,
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sourceSymbol: sourceTokenInfo.symbol,
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sourceAmount,
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chainId,
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}));
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if (smartTransactionEstimatedGas) {
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({ feeInFiat, feeInEth } = getFeeForSmartTransaction({
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chainId,
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currentCurrency,
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conversionRate,
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nativeCurrencySymbol,
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estimatedFeeInWeiDec: smartTransactionEstimatedGas.feeEstimate,
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}));
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}
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const slippageMultiplier = new BigNumber(100 - slippage).div(100);
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const minimumAmountReceived = new BigNumber(destinationValue)
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.times(slippageMultiplier)
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.toFixed(6);
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const tokenConversionRate =
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tokenConversionRates[destinationTokenInfo.address];
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const ethValueOfTrade = isSwapsDefaultTokenSymbol(
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destinationTokenInfo.symbol,
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chainId,
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)
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? calcTokenAmount(destinationAmount, destinationTokenInfo.decimals).minus(
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rawEthFee,
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10,
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)
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: new BigNumber(tokenConversionRate || 0, 10)
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.times(
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calcTokenAmount(destinationAmount, destinationTokenInfo.decimals),
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10,
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)
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.minus(rawEthFee, 10);
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let liquiditySourceKey;
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let renderedSlippage = slippage;
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if (aggType === 'AGG') {
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liquiditySourceKey = 'swapAggregator';
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} else if (aggType === 'RFQ') {
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liquiditySourceKey = 'swapRequestForQuotation';
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renderedSlippage = 0;
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} else if (aggType === 'DEX') {
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liquiditySourceKey = 'swapDecentralizedExchange';
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} else if (aggType === 'CONTRACT') {
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liquiditySourceKey = 'swapDirectContract';
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} else {
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liquiditySourceKey = 'swapUnknown';
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}
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return {
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aggId: aggregator,
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amountReceiving: `${destinationValue} ${destinationTokenInfo.symbol}`,
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destinationTokenDecimals: destinationTokenInfo.decimals,
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destinationTokenSymbol: destinationTokenInfo.symbol,
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destinationTokenValue: formatSwapsValueForDisplay(destinationValue),
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destinationIconUrl: destinationTokenInfo.iconUrl,
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isBestQuote: quote.isBestQuote,
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liquiditySourceKey,
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feeInEth,
|
|
detailedNetworkFees: `${feeInEth} (${feeInFiat})`,
|
|
networkFees: feeInFiat,
|
|
quoteSource: aggType,
|
|
rawNetworkFees,
|
|
slippage: renderedSlippage,
|
|
sourceTokenDecimals: sourceTokenInfo.decimals,
|
|
sourceTokenSymbol: sourceTokenInfo.symbol,
|
|
sourceTokenValue: sourceValue,
|
|
sourceTokenIconUrl: sourceTokenInfo.iconUrl,
|
|
ethValueOfTrade,
|
|
minimumAmountReceived,
|
|
metaMaskFee: fee,
|
|
};
|
|
});
|
|
}
|
|
|
|
export function formatSwapsValueForDisplay(destinationAmount) {
|
|
let amountToDisplay = toPrecisionWithoutTrailingZeros(destinationAmount, 12);
|
|
if (amountToDisplay.match(/e[+-]/u)) {
|
|
amountToDisplay = new BigNumber(amountToDisplay).toFixed();
|
|
}
|
|
return amountToDisplay;
|
|
}
|
|
|
|
/**
|
|
* Checks whether a contract address is valid before swapping tokens.
|
|
*
|
|
* @param {string} contractAddress - E.g. "0x881d40237659c251811cec9c364ef91dc08d300c" for mainnet
|
|
* @param {string} chainId - The hex encoded chain ID to check
|
|
* @returns {boolean} Whether a contract address is valid or not
|
|
*/
|
|
export const isContractAddressValid = (
|
|
contractAddress,
|
|
chainId = CHAIN_IDS.MAINNET,
|
|
) => {
|
|
if (!contractAddress || !ALLOWED_CONTRACT_ADDRESSES[chainId]) {
|
|
return false;
|
|
}
|
|
return ALLOWED_CONTRACT_ADDRESSES[chainId].some(
|
|
// Sometimes we get a contract address with a few upper-case chars and since addresses are
|
|
// case-insensitive, we compare lowercase versions for validity.
|
|
(allowedContractAddress) =>
|
|
contractAddress.toLowerCase() === allowedContractAddress.toLowerCase(),
|
|
);
|
|
};
|
|
|
|
/**
|
|
* @param {string} chainId
|
|
* @returns string e.g. ethereum, bsc or polygon
|
|
*/
|
|
export const getNetworkNameByChainId = (chainId) => {
|
|
switch (chainId) {
|
|
case CHAIN_IDS.MAINNET:
|
|
return ETHEREUM;
|
|
case CHAIN_IDS.BSC:
|
|
return BSC;
|
|
case CHAIN_IDS.POLYGON:
|
|
return POLYGON;
|
|
case CHAIN_IDS.GOERLI:
|
|
return GOERLI;
|
|
case CHAIN_IDS.AVALANCHE:
|
|
return AVALANCHE;
|
|
default:
|
|
return '';
|
|
}
|
|
};
|
|
|
|
/**
|
|
* It returns info about if Swaps are enabled and if we should use our new APIs for it.
|
|
*
|
|
* @param {object} swapsFeatureFlags
|
|
* @param {string} chainId
|
|
* @returns object with 2 items: "swapsFeatureIsLive"
|
|
*/
|
|
export const getSwapsLivenessForNetwork = (swapsFeatureFlags = {}, chainId) => {
|
|
const networkName = getNetworkNameByChainId(chainId);
|
|
// Use old APIs for testnet and Goerli.
|
|
if ([CHAIN_IDS.LOCALHOST, CHAIN_IDS.GOERLI].includes(chainId)) {
|
|
return {
|
|
swapsFeatureIsLive: true,
|
|
};
|
|
}
|
|
// If a network name is not found in the list of feature flags, disable Swaps.
|
|
if (!swapsFeatureFlags[networkName]) {
|
|
return {
|
|
swapsFeatureIsLive: false,
|
|
};
|
|
}
|
|
const isNetworkEnabledForNewApi =
|
|
swapsFeatureFlags[networkName].extensionActive;
|
|
if (isNetworkEnabledForNewApi) {
|
|
return {
|
|
swapsFeatureIsLive: true,
|
|
};
|
|
}
|
|
return {
|
|
swapsFeatureIsLive: swapsFeatureFlags[networkName].fallbackToV1,
|
|
};
|
|
};
|
|
|
|
/**
|
|
* @param {number} value
|
|
* @returns number
|
|
*/
|
|
export const countDecimals = (value) => {
|
|
if (!value || Math.floor(value) === value) {
|
|
return 0;
|
|
}
|
|
return value.toString().split('.')[1]?.length || 0;
|
|
};
|
|
|
|
export const showRemainingTimeInMinAndSec = (remainingTimeInSec) => {
|
|
if (!Number.isInteger(remainingTimeInSec)) {
|
|
return '0:00';
|
|
}
|
|
const minutes = Math.floor(remainingTimeInSec / 60);
|
|
const seconds = remainingTimeInSec % 60;
|
|
return `${minutes}:${seconds.toString().padStart(2, '0')}`;
|
|
};
|
|
|
|
export const stxErrorTypes = {
|
|
UNAVAILABLE: 'unavailable',
|
|
NOT_ENOUGH_FUNDS: 'not_enough_funds',
|
|
REGULAR_TX_IN_PROGRESS: 'regular_tx_pending',
|
|
};
|
|
|
|
export const getTranslatedStxErrorMessage = (errorType, t) => {
|
|
switch (errorType) {
|
|
case stxErrorTypes.UNAVAILABLE:
|
|
case stxErrorTypes.REGULAR_TX_IN_PROGRESS:
|
|
return t('stxErrorUnavailable');
|
|
case stxErrorTypes.NOT_ENOUGH_FUNDS:
|
|
return t('stxErrorNotEnoughFunds');
|
|
default:
|
|
return t('stxErrorUnavailable');
|
|
}
|
|
};
|
|
|
|
export const parseSmartTransactionsError = (errorMessage) => {
|
|
const errorJson = errorMessage.slice(12);
|
|
return JSON.parse(errorJson.trim());
|
|
};
|