mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-11-27 21:00:13 +01:00
791 lines
23 KiB
JavaScript
791 lines
23 KiB
JavaScript
import { createSlice } from '@reduxjs/toolkit'
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import BigNumber from 'bignumber.js'
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import log from 'loglevel'
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import { getStorageItem, setStorageItem } from '../../../lib/storage-helpers'
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import {
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addToken,
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addUnapprovedTransaction,
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fetchAndSetQuotes,
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forceUpdateMetamaskState,
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resetSwapsPostFetchState,
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setBackgroundSwapRouteState,
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setInitialGasEstimate,
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setSwapsErrorKey,
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setSwapsTxGasPrice,
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setApproveTxId,
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setTradeTxId,
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stopPollingForQuotes,
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updateAndApproveTx,
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updateTransaction,
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resetBackgroundSwapsState,
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setSwapsLiveness,
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setSelectedQuoteAggId,
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setSwapsTxGasLimit,
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} from '../../store/actions'
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import {
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AWAITING_SWAP_ROUTE,
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BUILD_QUOTE_ROUTE,
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LOADING_QUOTES_ROUTE,
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SWAPS_ERROR_ROUTE,
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SWAPS_MAINTENANCE_ROUTE,
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} from '../../helpers/constants/routes'
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import {
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fetchSwapsFeatureLiveness,
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fetchSwapsGasPrices,
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} from '../../pages/swaps/swaps.util'
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import { calcGasTotal } from '../../pages/send/send.utils'
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import {
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decimalToHex,
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getValueFromWeiHex,
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hexMax,
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decGWEIToHexWEI,
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hexToDecimal,
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hexWEIToDecGWEI,
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} from '../../helpers/utils/conversions.util'
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import { conversionLessThan } from '../../helpers/utils/conversion-util'
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import { calcTokenAmount } from '../../helpers/utils/token-util'
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import {
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getSelectedAccount,
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getTokenExchangeRates,
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getUSDConversionRate,
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} from '../../selectors'
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import {
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ERROR_FETCHING_QUOTES,
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QUOTES_NOT_AVAILABLE_ERROR,
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ETH_SWAPS_TOKEN_OBJECT,
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SWAP_FAILED_ERROR,
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SWAPS_FETCH_ORDER_CONFLICT,
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} from '../../helpers/constants/swaps'
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import { TRANSACTION_CATEGORIES } from '../../../../shared/constants/transaction'
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const GAS_PRICES_LOADING_STATES = {
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INITIAL: 'INITIAL',
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LOADING: 'LOADING',
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FAILED: 'FAILED',
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COMPLETED: 'COMPLETED',
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}
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const initialState = {
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aggregatorMetadata: null,
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approveTxId: null,
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balanceError: false,
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fetchingQuotes: false,
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fromToken: null,
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quotesFetchStartTime: null,
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topAssets: {},
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toToken: null,
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customGas: {
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price: null,
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limit: null,
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loading: GAS_PRICES_LOADING_STATES.INITIAL,
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priceEstimates: {},
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priceEstimatesLastRetrieved: 0,
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fallBackPrice: null,
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},
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}
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const slice = createSlice({
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name: 'swaps',
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initialState,
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reducers: {
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clearSwapsState: () => initialState,
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navigatedBackToBuildQuote: (state) => {
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state.approveTxId = null
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state.balanceError = false
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state.fetchingQuotes = false
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state.customGas.limit = null
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state.customGas.price = null
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},
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retriedGetQuotes: (state) => {
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state.approveTxId = null
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state.balanceError = false
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state.fetchingQuotes = false
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},
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setAggregatorMetadata: (state, action) => {
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state.aggregatorMetadata = action.payload
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},
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setBalanceError: (state, action) => {
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state.balanceError = action.payload
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},
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setFetchingQuotes: (state, action) => {
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state.fetchingQuotes = action.payload
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},
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setFromToken: (state, action) => {
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state.fromToken = action.payload
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},
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setQuotesFetchStartTime: (state, action) => {
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state.quotesFetchStartTime = action.payload
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},
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setTopAssets: (state, action) => {
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state.topAssets = action.payload
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},
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setToToken: (state, action) => {
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state.toToken = action.payload
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},
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swapCustomGasModalClosed: (state) => {
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state.customGas.price = null
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state.customGas.limit = null
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},
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swapCustomGasModalPriceEdited: (state, action) => {
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state.customGas.price = action.payload
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},
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swapCustomGasModalLimitEdited: (state, action) => {
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state.customGas.limit = action.payload
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},
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swapGasPriceEstimatesFetchStarted: (state) => {
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state.customGas.loading = GAS_PRICES_LOADING_STATES.LOADING
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},
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swapGasPriceEstimatesFetchFailed: (state) => {
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state.customGas.loading = GAS_PRICES_LOADING_STATES.FAILED
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},
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swapGasPriceEstimatesFetchCompleted: (state, action) => {
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state.customGas.priceEstimates = action.payload.priceEstimates
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state.customGas.loading = GAS_PRICES_LOADING_STATES.COMPLETED
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state.customGas.priceEstimatesLastRetrieved =
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action.payload.priceEstimatesLastRetrieved
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},
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retrievedFallbackSwapsGasPrice: (state, action) => {
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state.customGas.fallBackPrice = action.payload
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},
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},
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})
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const { actions, reducer } = slice
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export default reducer
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// Selectors
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export const getAggregatorMetadata = (state) => state.swaps.aggregatorMetadata
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export const getBalanceError = (state) => state.swaps.balanceError
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export const getFromToken = (state) => state.swaps.fromToken
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export const getTopAssets = (state) => state.swaps.topAssets
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export const getToToken = (state) => state.swaps.toToken
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export const getFetchingQuotes = (state) => state.swaps.fetchingQuotes
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export const getQuotesFetchStartTime = (state) =>
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state.swaps.quotesFetchStartTime
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export const getSwapsCustomizationModalPrice = (state) =>
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state.swaps.customGas.price
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export const getSwapsCustomizationModalLimit = (state) =>
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state.swaps.customGas.limit
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export const swapGasPriceEstimateIsLoading = (state) =>
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state.swaps.customGas.loading === GAS_PRICES_LOADING_STATES.LOADING
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export const swapGasEstimateLoadingHasFailed = (state) =>
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state.swaps.customGas.loading === GAS_PRICES_LOADING_STATES.INITIAL
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export const getSwapGasPriceEstimateData = (state) =>
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state.swaps.customGas.priceEstimates
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export const getSwapsPriceEstimatesLastRetrieved = (state) =>
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state.swaps.customGas.priceEstimatesLastRetrieved
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export const getSwapsFallbackGasPrice = (state) =>
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state.swaps.customGas.fallBackPrice
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export function shouldShowCustomPriceTooLowWarning(state) {
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const { average } = getSwapGasPriceEstimateData(state)
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const customGasPrice = getSwapsCustomizationModalPrice(state)
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if (!customGasPrice || average === undefined) {
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return false
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}
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const customPriceRisksSwapFailure = conversionLessThan(
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{
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value: customGasPrice,
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fromNumericBase: 'hex',
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fromDenomination: 'WEI',
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toDenomination: 'GWEI',
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},
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{ value: average, fromNumericBase: 'dec' },
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)
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return customPriceRisksSwapFailure
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}
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// Background selectors
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const getSwapsState = (state) => state.metamask.swapsState
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export const getSwapsFeatureLiveness = (state) =>
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state.metamask.swapsState.swapsFeatureIsLive
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export const getBackgroundSwapRouteState = (state) =>
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state.metamask.swapsState.routeState
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export const getCustomSwapsGas = (state) =>
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state.metamask.swapsState.customMaxGas
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export const getCustomSwapsGasPrice = (state) =>
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state.metamask.swapsState.customGasPrice
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export const getFetchParams = (state) => state.metamask.swapsState.fetchParams
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export const getQuotes = (state) => state.metamask.swapsState.quotes
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export const getQuotesLastFetched = (state) =>
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state.metamask.swapsState.quotesLastFetched
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export const getSelectedQuote = (state) => {
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const { selectedAggId, quotes } = getSwapsState(state)
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return quotes[selectedAggId]
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}
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export const getSwapsErrorKey = (state) => getSwapsState(state)?.errorKey
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export const getShowQuoteLoadingScreen = (state) =>
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state.swaps.showQuoteLoadingScreen
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export const getSwapsTokens = (state) => state.metamask.swapsState.tokens
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export const getSwapsWelcomeMessageSeenStatus = (state) =>
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state.metamask.swapsWelcomeMessageHasBeenShown
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export const getTopQuote = (state) => {
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const { topAggId, quotes } = getSwapsState(state)
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return quotes[topAggId]
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}
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export const getApproveTxId = (state) => state.metamask.swapsState.approveTxId
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export const getTradeTxId = (state) => state.metamask.swapsState.tradeTxId
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export const getUsedQuote = (state) =>
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getSelectedQuote(state) || getTopQuote(state)
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// Compound selectors
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export const getDestinationTokenInfo = (state) =>
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getFetchParams(state)?.metaData?.destinationTokenInfo
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export const getUsedSwapsGasPrice = (state) =>
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getCustomSwapsGasPrice(state) || getSwapsFallbackGasPrice(state)
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export const getApproveTxParams = (state) => {
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const { approvalNeeded } = getSelectedQuote(state) || getTopQuote(state) || {}
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if (!approvalNeeded) {
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return null
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}
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const data = getSwapsState(state)?.customApproveTxData || approvalNeeded.data
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const gasPrice = getCustomSwapsGasPrice(state) || approvalNeeded.gasPrice
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return { ...approvalNeeded, gasPrice, data }
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}
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// Actions / action-creators
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const {
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clearSwapsState,
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navigatedBackToBuildQuote,
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retriedGetQuotes,
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swapGasPriceEstimatesFetchCompleted,
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swapGasPriceEstimatesFetchStarted,
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swapGasPriceEstimatesFetchFailed,
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setAggregatorMetadata,
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setBalanceError,
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setFetchingQuotes,
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setFromToken,
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setQuotesFetchStartTime,
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setTopAssets,
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setToToken,
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swapCustomGasModalPriceEdited,
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swapCustomGasModalLimitEdited,
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retrievedFallbackSwapsGasPrice,
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swapCustomGasModalClosed,
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} = actions
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export {
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clearSwapsState,
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setAggregatorMetadata,
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setBalanceError,
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setFetchingQuotes,
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setFromToken as setSwapsFromToken,
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setQuotesFetchStartTime as setSwapQuotesFetchStartTime,
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setTopAssets,
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setToToken as setSwapToToken,
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swapCustomGasModalPriceEdited,
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swapCustomGasModalLimitEdited,
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swapCustomGasModalClosed,
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}
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export const navigateBackToBuildQuote = (history) => {
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return async (dispatch) => {
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// TODO: Ensure any fetch in progress is cancelled
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dispatch(navigatedBackToBuildQuote())
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history.push(BUILD_QUOTE_ROUTE)
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}
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}
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export const prepareForRetryGetQuotes = () => {
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return async (dispatch) => {
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// TODO: Ensure any fetch in progress is cancelled
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await dispatch(resetSwapsPostFetchState())
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dispatch(retriedGetQuotes())
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}
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}
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export const prepareToLeaveSwaps = () => {
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return async (dispatch) => {
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dispatch(clearSwapsState())
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await dispatch(resetBackgroundSwapsState())
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}
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}
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export const swapsQuoteSelected = (aggId) => {
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return (dispatch) => {
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dispatch(swapCustomGasModalLimitEdited(null))
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dispatch(setSelectedQuoteAggId(aggId))
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dispatch(setSwapsTxGasLimit(''))
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}
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}
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export const fetchAndSetSwapsGasPriceInfo = () => {
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return async (dispatch) => {
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const basicEstimates = await dispatch(fetchMetaSwapsGasPriceEstimates())
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if (basicEstimates?.fast) {
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dispatch(setSwapsTxGasPrice(decGWEIToHexWEI(basicEstimates.fast)))
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}
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}
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}
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export const fetchQuotesAndSetQuoteState = (
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history,
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inputValue,
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maxSlippage,
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metaMetricsEvent,
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) => {
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return async (dispatch, getState) => {
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let swapsFeatureIsLive = false
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try {
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swapsFeatureIsLive = await fetchSwapsFeatureLiveness()
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} catch (error) {
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log.error('Failed to fetch Swaps liveness, defaulting to false.', error)
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}
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await dispatch(setSwapsLiveness(swapsFeatureIsLive))
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if (!swapsFeatureIsLive) {
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await history.push(SWAPS_MAINTENANCE_ROUTE)
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return
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}
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const state = getState()
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const fetchParams = getFetchParams(state)
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const selectedAccount = getSelectedAccount(state)
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const balanceError = getBalanceError(state)
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const fetchParamsFromToken =
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fetchParams?.metaData?.sourceTokenInfo?.symbol === 'ETH'
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? {
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...ETH_SWAPS_TOKEN_OBJECT,
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string: getValueFromWeiHex({
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value: selectedAccount.balance,
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numberOfDecimals: 4,
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toDenomination: 'ETH',
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}),
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balance: hexToDecimal(selectedAccount.balance),
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}
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: fetchParams?.metaData?.sourceTokenInfo
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const selectedFromToken = getFromToken(state) || fetchParamsFromToken || {}
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const selectedToToken =
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getToToken(state) || fetchParams?.metaData?.destinationTokenInfo || {}
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const {
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address: fromTokenAddress,
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symbol: fromTokenSymbol,
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decimals: fromTokenDecimals,
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iconUrl: fromTokenIconUrl,
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balance: fromTokenBalance,
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} = selectedFromToken
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const {
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address: toTokenAddress,
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symbol: toTokenSymbol,
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decimals: toTokenDecimals,
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iconUrl: toTokenIconUrl,
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} = selectedToToken
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await dispatch(setBackgroundSwapRouteState('loading'))
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history.push(LOADING_QUOTES_ROUTE)
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dispatch(setFetchingQuotes(true))
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const contractExchangeRates = getTokenExchangeRates(state)
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let destinationTokenAddedForSwap = false
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if (toTokenSymbol !== 'ETH' && !contractExchangeRates[toTokenAddress]) {
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destinationTokenAddedForSwap = true
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await dispatch(
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addToken(
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toTokenAddress,
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toTokenSymbol,
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toTokenDecimals,
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toTokenIconUrl,
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true,
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),
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)
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}
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if (
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fromTokenSymbol !== 'ETH' &&
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!contractExchangeRates[fromTokenAddress] &&
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fromTokenBalance &&
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new BigNumber(fromTokenBalance, 16).gt(0)
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) {
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dispatch(
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addToken(
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fromTokenAddress,
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fromTokenSymbol,
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fromTokenDecimals,
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fromTokenIconUrl,
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true,
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),
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)
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}
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const swapsTokens = getSwapsTokens(state)
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const sourceTokenInfo =
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swapsTokens?.find(({ address }) => address === fromTokenAddress) ||
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selectedFromToken
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const destinationTokenInfo =
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swapsTokens?.find(({ address }) => address === toTokenAddress) ||
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selectedToToken
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dispatch(setFromToken(selectedFromToken))
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metaMetricsEvent({
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event: 'Quotes Requested',
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category: 'swaps',
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sensitiveProperties: {
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token_from: fromTokenSymbol,
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token_from_amount: String(inputValue),
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token_to: toTokenSymbol,
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request_type: balanceError ? 'Quote' : 'Order',
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slippage: maxSlippage,
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custom_slippage: maxSlippage !== 2,
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anonymizedData: true,
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},
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})
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try {
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const fetchStartTime = Date.now()
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dispatch(setQuotesFetchStartTime(fetchStartTime))
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const fetchAndSetQuotesPromise = dispatch(
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fetchAndSetQuotes(
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{
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slippage: maxSlippage,
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sourceToken: fromTokenAddress,
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destinationToken: toTokenAddress,
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value: inputValue,
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fromAddress: selectedAccount.address,
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destinationTokenAddedForSwap,
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balanceError,
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sourceDecimals: fromTokenDecimals,
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},
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{
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sourceTokenInfo,
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destinationTokenInfo,
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accountBalance: selectedAccount.balance,
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},
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),
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)
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const gasPriceFetchPromise = dispatch(fetchAndSetSwapsGasPriceInfo())
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const [[fetchedQuotes, selectedAggId]] = await Promise.all([
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fetchAndSetQuotesPromise,
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gasPriceFetchPromise,
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])
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if (Object.values(fetchedQuotes)?.length === 0) {
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metaMetricsEvent({
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event: 'No Quotes Available',
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category: 'swaps',
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sensitiveProperties: {
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token_from: fromTokenSymbol,
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token_from_amount: String(inputValue),
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token_to: toTokenSymbol,
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request_type: balanceError ? 'Quote' : 'Order',
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slippage: maxSlippage,
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custom_slippage: maxSlippage !== 2,
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},
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})
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dispatch(setSwapsErrorKey(QUOTES_NOT_AVAILABLE_ERROR))
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} else {
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const newSelectedQuote = fetchedQuotes[selectedAggId]
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metaMetricsEvent({
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event: 'Quotes Received',
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category: 'swaps',
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sensitiveProperties: {
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token_from: fromTokenSymbol,
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token_from_amount: String(inputValue),
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token_to: toTokenSymbol,
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token_to_amount: calcTokenAmount(
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newSelectedQuote.destinationAmount,
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newSelectedQuote.decimals || 18,
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),
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request_type: balanceError ? 'Quote' : 'Order',
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slippage: maxSlippage,
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custom_slippage: maxSlippage !== 2,
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response_time: Date.now() - fetchStartTime,
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|
best_quote_source: newSelectedQuote.aggregator,
|
|
available_quotes: Object.values(fetchedQuotes)?.length,
|
|
anonymizedData: true,
|
|
},
|
|
})
|
|
|
|
dispatch(setInitialGasEstimate(selectedAggId))
|
|
}
|
|
} catch (e) {
|
|
// A newer swap request is running, so simply bail and let the newer request respond
|
|
if (e.message === SWAPS_FETCH_ORDER_CONFLICT) {
|
|
log.debug(`Swap fetch order conflict detected; ignoring older request`)
|
|
return
|
|
}
|
|
// TODO: Check for any errors we should expect to occur in production, and report others to Sentry
|
|
log.error(`Error fetching quotes: `, e)
|
|
|
|
dispatch(setSwapsErrorKey(ERROR_FETCHING_QUOTES))
|
|
}
|
|
|
|
dispatch(setFetchingQuotes(false))
|
|
}
|
|
}
|
|
|
|
export const signAndSendTransactions = (history, metaMetricsEvent) => {
|
|
return async (dispatch, getState) => {
|
|
let swapsFeatureIsLive = false
|
|
try {
|
|
swapsFeatureIsLive = await fetchSwapsFeatureLiveness()
|
|
} catch (error) {
|
|
log.error('Failed to fetch Swaps liveness, defaulting to false.', error)
|
|
}
|
|
await dispatch(setSwapsLiveness(swapsFeatureIsLive))
|
|
|
|
if (!swapsFeatureIsLive) {
|
|
await history.push(SWAPS_MAINTENANCE_ROUTE)
|
|
return
|
|
}
|
|
|
|
const state = getState()
|
|
const customSwapsGas = getCustomSwapsGas(state)
|
|
const fetchParams = getFetchParams(state)
|
|
const { metaData, value: swapTokenValue, slippage } = fetchParams
|
|
const { sourceTokenInfo = {}, destinationTokenInfo = {} } = metaData
|
|
await dispatch(setBackgroundSwapRouteState('awaiting'))
|
|
await dispatch(stopPollingForQuotes())
|
|
history.push(AWAITING_SWAP_ROUTE)
|
|
|
|
const { fast: fastGasEstimate } = getSwapGasPriceEstimateData(state)
|
|
|
|
const usedQuote = getUsedQuote(state)
|
|
const usedTradeTxParams = usedQuote.trade
|
|
|
|
const estimatedGasLimit = new BigNumber(
|
|
usedQuote?.gasEstimate || decimalToHex(usedQuote?.averageGas || 0),
|
|
16,
|
|
)
|
|
const estimatedGasLimitWithMultiplier = estimatedGasLimit
|
|
.times(1.4, 10)
|
|
.round(0)
|
|
.toString(16)
|
|
const maxGasLimit =
|
|
customSwapsGas ||
|
|
hexMax(
|
|
`0x${decimalToHex(usedQuote?.maxGas || 0)}`,
|
|
estimatedGasLimitWithMultiplier,
|
|
)
|
|
|
|
const usedGasPrice = getUsedSwapsGasPrice(state)
|
|
usedTradeTxParams.gas = maxGasLimit
|
|
usedTradeTxParams.gasPrice = usedGasPrice
|
|
|
|
const usdConversionRate = getUSDConversionRate(state)
|
|
const destinationValue = calcTokenAmount(
|
|
usedQuote.destinationAmount,
|
|
destinationTokenInfo.decimals || 18,
|
|
).toPrecision(8)
|
|
const usedGasLimitEstimate =
|
|
usedQuote?.gasEstimateWithRefund ||
|
|
`0x${decimalToHex(usedQuote?.averageGas || 0)}`
|
|
const totalGasLimitEstimate = new BigNumber(usedGasLimitEstimate, 16)
|
|
.plus(usedQuote.approvalNeeded?.gas || '0x0', 16)
|
|
.toString(16)
|
|
const gasEstimateTotalInUSD = getValueFromWeiHex({
|
|
value: calcGasTotal(totalGasLimitEstimate, usedGasPrice),
|
|
toCurrency: 'usd',
|
|
conversionRate: usdConversionRate,
|
|
numberOfDecimals: 6,
|
|
})
|
|
|
|
const swapMetaData = {
|
|
token_from: sourceTokenInfo.symbol,
|
|
token_from_amount: String(swapTokenValue),
|
|
token_to: destinationTokenInfo.symbol,
|
|
token_to_amount: destinationValue,
|
|
slippage,
|
|
custom_slippage: slippage !== 2,
|
|
best_quote_source: getTopQuote(state)?.aggregator,
|
|
available_quotes: getQuotes(state)?.length,
|
|
other_quote_selected:
|
|
usedQuote.aggregator !== getTopQuote(state)?.aggregator,
|
|
other_quote_selected_source:
|
|
usedQuote.aggregator === getTopQuote(state)?.aggregator
|
|
? ''
|
|
: usedQuote.aggregator,
|
|
gas_fees: gasEstimateTotalInUSD,
|
|
estimated_gas: estimatedGasLimit.toString(10),
|
|
suggested_gas_price: fastGasEstimate,
|
|
used_gas_price: hexWEIToDecGWEI(usedGasPrice),
|
|
average_savings: usedQuote.savings?.total,
|
|
performance_savings: usedQuote.savings?.performance,
|
|
fee_savings: usedQuote.savings?.fee,
|
|
median_metamask_fee: usedQuote.savings?.medianMetaMaskFee,
|
|
}
|
|
|
|
metaMetricsEvent({
|
|
event: 'Swap Started',
|
|
category: 'swaps',
|
|
sensitiveProperties: swapMetaData,
|
|
})
|
|
|
|
let finalApproveTxMeta
|
|
const approveTxParams = getApproveTxParams(state)
|
|
if (approveTxParams) {
|
|
const approveTxMeta = await dispatch(
|
|
addUnapprovedTransaction(
|
|
{ ...approveTxParams, amount: '0x0' },
|
|
'metamask',
|
|
),
|
|
)
|
|
await dispatch(setApproveTxId(approveTxMeta.id))
|
|
finalApproveTxMeta = await dispatch(
|
|
updateTransaction(
|
|
{
|
|
...approveTxMeta,
|
|
transactionCategory: TRANSACTION_CATEGORIES.SWAP_APPROVAL,
|
|
sourceTokenSymbol: sourceTokenInfo.symbol,
|
|
},
|
|
true,
|
|
),
|
|
)
|
|
try {
|
|
await dispatch(updateAndApproveTx(finalApproveTxMeta, true))
|
|
} catch (e) {
|
|
await dispatch(setSwapsErrorKey(SWAP_FAILED_ERROR))
|
|
history.push(SWAPS_ERROR_ROUTE)
|
|
return
|
|
}
|
|
}
|
|
|
|
const tradeTxMeta = await dispatch(
|
|
addUnapprovedTransaction(usedTradeTxParams, 'metamask'),
|
|
)
|
|
dispatch(setTradeTxId(tradeTxMeta.id))
|
|
const finalTradeTxMeta = await dispatch(
|
|
updateTransaction(
|
|
{
|
|
...tradeTxMeta,
|
|
sourceTokenSymbol: sourceTokenInfo.symbol,
|
|
destinationTokenSymbol: destinationTokenInfo.symbol,
|
|
transactionCategory: TRANSACTION_CATEGORIES.SWAP,
|
|
destinationTokenDecimals: destinationTokenInfo.decimals,
|
|
destinationTokenAddress: destinationTokenInfo.address,
|
|
swapMetaData,
|
|
swapTokenValue,
|
|
approvalTxId: finalApproveTxMeta?.id,
|
|
},
|
|
true,
|
|
),
|
|
)
|
|
try {
|
|
await dispatch(updateAndApproveTx(finalTradeTxMeta, true))
|
|
} catch (e) {
|
|
await dispatch(setSwapsErrorKey(SWAP_FAILED_ERROR))
|
|
history.push(SWAPS_ERROR_ROUTE)
|
|
return
|
|
}
|
|
|
|
await forceUpdateMetamaskState(dispatch)
|
|
}
|
|
}
|
|
|
|
export function fetchMetaSwapsGasPriceEstimates() {
|
|
return async (dispatch, getState) => {
|
|
const state = getState()
|
|
const priceEstimatesLastRetrieved = getSwapsPriceEstimatesLastRetrieved(
|
|
state,
|
|
)
|
|
const timeLastRetrieved =
|
|
priceEstimatesLastRetrieved ||
|
|
(await getStorageItem('METASWAP_GAS_PRICE_ESTIMATES_LAST_RETRIEVED')) ||
|
|
0
|
|
|
|
dispatch(swapGasPriceEstimatesFetchStarted())
|
|
|
|
let priceEstimates
|
|
try {
|
|
if (Date.now() - timeLastRetrieved > 30000) {
|
|
priceEstimates = await fetchSwapsGasPrices()
|
|
} else {
|
|
const cachedPriceEstimates = await getStorageItem(
|
|
'METASWAP_GAS_PRICE_ESTIMATES',
|
|
)
|
|
priceEstimates = cachedPriceEstimates || (await fetchSwapsGasPrices())
|
|
}
|
|
} catch (e) {
|
|
log.warn('Fetching swaps gas prices failed:', e)
|
|
|
|
if (!e.message?.match(/NetworkError|Fetch failed with status:/u)) {
|
|
throw e
|
|
}
|
|
|
|
dispatch(swapGasPriceEstimatesFetchFailed())
|
|
|
|
try {
|
|
const gasPrice = await global.ethQuery.gasPrice()
|
|
const gasPriceInDecGWEI = hexWEIToDecGWEI(gasPrice.toString(10))
|
|
|
|
dispatch(retrievedFallbackSwapsGasPrice(gasPriceInDecGWEI))
|
|
return null
|
|
} catch (networkGasPriceError) {
|
|
console.error(
|
|
`Failed to retrieve fallback gas price: `,
|
|
networkGasPriceError,
|
|
)
|
|
return null
|
|
}
|
|
}
|
|
|
|
const timeRetrieved = Date.now()
|
|
|
|
await Promise.all([
|
|
setStorageItem('METASWAP_GAS_PRICE_ESTIMATES', priceEstimates),
|
|
setStorageItem(
|
|
'METASWAP_GAS_PRICE_ESTIMATES_LAST_RETRIEVED',
|
|
timeRetrieved,
|
|
),
|
|
])
|
|
|
|
dispatch(
|
|
swapGasPriceEstimatesFetchCompleted({
|
|
priceEstimates,
|
|
priceEstimatesLastRetrieved: timeRetrieved,
|
|
}),
|
|
)
|
|
return priceEstimates
|
|
}
|
|
}
|