import { conversionRateSelector, currentCurrencySelector, unconfirmedTransactionsHashSelector, } from '../selectors/confirm-transaction' import { getTokenData, getValueFromWeiHex, getTransactionFee, getHexGasTotal, addFiat, addEth, increaseLastGasPrice, hexGreaterThan, isSmartContractAddress, } from '../helpers/confirm-transaction/util' import { getMethodData } from '../helpers/transactions.util' import { getSymbolAndDecimals } from '../token-util' import { conversionUtil } from '../conversion-util' // Actions const createActionType = action => `metamask/confirm-transaction/${action}` const UPDATE_TX_DATA = createActionType('UPDATE_TX_DATA') const CLEAR_TX_DATA = createActionType('CLEAR_TX_DATA') const UPDATE_TOKEN_DATA = createActionType('UPDATE_TOKEN_DATA') const CLEAR_TOKEN_DATA = createActionType('CLEAR_TOKEN_DATA') const UPDATE_METHOD_DATA = createActionType('UPDATE_METHOD_DATA') const CLEAR_METHOD_DATA = createActionType('CLEAR_METHOD_DATA') const CLEAR_CONFIRM_TRANSACTION = createActionType('CLEAR_CONFIRM_TRANSACTION') const UPDATE_TRANSACTION_AMOUNTS = createActionType('UPDATE_TRANSACTION_AMOUNTS') const UPDATE_TRANSACTION_FEES = createActionType('UPDATE_TRANSACTION_FEES') const UPDATE_TRANSACTION_TOTALS = createActionType('UPDATE_TRANSACTION_TOTALS') const UPDATE_HEX_GAS_TOTAL = createActionType('UPDATE_HEX_GAS_TOTAL') const UPDATE_TOKEN_PROPS = createActionType('UPDATE_TOKEN_PROPS') const UPDATE_NONCE = createActionType('UPDATE_NONCE') const UPDATE_TO_SMART_CONTRACT = createActionType('UPDATE_TO_SMART_CONTRACT') const FETCH_DATA_START = createActionType('FETCH_DATA_START') const FETCH_DATA_END = createActionType('FETCH_DATA_END') // Initial state const initState = { txData: {}, tokenData: {}, methodData: {}, tokenProps: { tokenDecimals: '', tokenSymbol: '', }, fiatTransactionAmount: '', fiatTransactionFee: '', fiatTransactionTotal: '', ethTransactionAmount: '', ethTransactionFee: '', ethTransactionTotal: '', hexGasTotal: '', nonce: '', toSmartContract: false, fetchingData: false, } // Reducer export default function reducer ({ confirmTransaction: confirmState = initState }, action = {}) { switch (action.type) { case UPDATE_TX_DATA: return { ...confirmState, txData: { ...action.payload, }, } case CLEAR_TX_DATA: return { ...confirmState, txData: {}, } case UPDATE_TOKEN_DATA: return { ...confirmState, tokenData: { ...action.payload, }, } case CLEAR_TOKEN_DATA: return { ...confirmState, tokenData: {}, } case UPDATE_METHOD_DATA: return { ...confirmState, methodData: { ...action.payload, }, } case CLEAR_METHOD_DATA: return { ...confirmState, methodData: {}, } case UPDATE_TRANSACTION_AMOUNTS: const { fiatTransactionAmount, ethTransactionAmount } = action.payload return { ...confirmState, fiatTransactionAmount: fiatTransactionAmount || confirmState.fiatTransactionAmount, ethTransactionAmount: ethTransactionAmount || confirmState.ethTransactionAmount, } case UPDATE_TRANSACTION_FEES: const { fiatTransactionFee, ethTransactionFee } = action.payload return { ...confirmState, fiatTransactionFee: fiatTransactionFee || confirmState.fiatTransactionFee, ethTransactionFee: ethTransactionFee || confirmState.ethTransactionFee, } case UPDATE_TRANSACTION_TOTALS: const { fiatTransactionTotal, ethTransactionTotal } = action.payload return { ...confirmState, fiatTransactionTotal: fiatTransactionTotal || confirmState.fiatTransactionTotal, ethTransactionTotal: ethTransactionTotal || confirmState.ethTransactionTotal, } case UPDATE_HEX_GAS_TOTAL: return { ...confirmState, hexGasTotal: action.payload, } case UPDATE_TOKEN_PROPS: const { tokenSymbol = '', tokenDecimals = '' } = action.payload return { ...confirmState, tokenProps: { ...confirmState.tokenProps, tokenSymbol, tokenDecimals, }, } case UPDATE_NONCE: return { ...confirmState, nonce: action.payload, } case UPDATE_TO_SMART_CONTRACT: return { ...confirmState, toSmartContract: action.payload, } case FETCH_DATA_START: return { ...confirmState, fetchingData: true, } case FETCH_DATA_END: return { ...confirmState, fetchingData: false, } case CLEAR_CONFIRM_TRANSACTION: return initState default: return confirmState } } // Action Creators export function updateTxData (txData) { return { type: UPDATE_TX_DATA, payload: txData, } } export function clearTxData () { return { type: CLEAR_TX_DATA, } } export function updateTokenData (tokenData) { return { type: UPDATE_TOKEN_DATA, payload: tokenData, } } export function clearTokenData () { return { type: CLEAR_TOKEN_DATA, } } export function updateMethodData (methodData) { return { type: UPDATE_METHOD_DATA, payload: methodData, } } export function clearMethodData () { return { type: CLEAR_METHOD_DATA, } } export function updateTransactionAmounts (amounts) { return { type: UPDATE_TRANSACTION_AMOUNTS, payload: amounts, } } export function updateTransactionFees (fees) { return { type: UPDATE_TRANSACTION_FEES, payload: fees, } } export function updateTransactionTotals (totals) { return { type: UPDATE_TRANSACTION_TOTALS, payload: totals, } } export function updateHexGasTotal (hexGasTotal) { return { type: UPDATE_HEX_GAS_TOTAL, payload: hexGasTotal, } } export function updateTokenProps (tokenProps) { return { type: UPDATE_TOKEN_PROPS, payload: tokenProps, } } export function updateNonce (nonce) { return { type: UPDATE_NONCE, payload: nonce, } } export function updateToSmartContract (toSmartContract) { return { type: UPDATE_TO_SMART_CONTRACT, payload: toSmartContract, } } export function setFetchingData (isFetching) { return { type: isFetching ? FETCH_DATA_START : FETCH_DATA_END, } } export function updateGasAndCalculate ({ gasLimit, gasPrice }) { return (dispatch, getState) => { const { confirmTransaction: { txData } } = getState() const newTxData = { ...txData, txParams: { ...txData.txParams, gas: gasLimit, gasPrice, }, } dispatch(updateTxDataAndCalculate(newTxData)) } } function increaseFromLastGasPrice (txData) { const { lastGasPrice, txParams: { gasPrice: previousGasPrice } = {} } = txData // Set the minimum to a 10% increase from the lastGasPrice. const minimumGasPrice = increaseLastGasPrice(lastGasPrice) const gasPriceBelowMinimum = hexGreaterThan(minimumGasPrice, previousGasPrice) const gasPrice = (!previousGasPrice || gasPriceBelowMinimum) ? minimumGasPrice : previousGasPrice return { ...txData, txParams: { ...txData.txParams, gasPrice, }, } } export function updateTxDataAndCalculate (txData) { return (dispatch, getState) => { const state = getState() const currentCurrency = currentCurrencySelector(state) const conversionRate = conversionRateSelector(state) dispatch(updateTxData(txData)) const { txParams: { value, gas: gasLimit = '0x0', gasPrice = '0x0' } = {} } = txData const fiatTransactionAmount = getValueFromWeiHex({ value, toCurrency: currentCurrency, conversionRate, numberOfDecimals: 2, }) const ethTransactionAmount = getValueFromWeiHex({ value, toCurrency: 'ETH', conversionRate, numberOfDecimals: 6, }) dispatch(updateTransactionAmounts({ fiatTransactionAmount, ethTransactionAmount })) const hexGasTotal = getHexGasTotal({ gasLimit, gasPrice }) dispatch(updateHexGasTotal(hexGasTotal)) const fiatTransactionFee = getTransactionFee({ value: hexGasTotal, toCurrency: currentCurrency, numberOfDecimals: 2, conversionRate, }) const ethTransactionFee = getTransactionFee({ value: hexGasTotal, toCurrency: 'ETH', numberOfDecimals: 6, conversionRate, }) dispatch(updateTransactionFees({ fiatTransactionFee, ethTransactionFee })) const fiatTransactionTotal = addFiat(fiatTransactionFee, fiatTransactionAmount) const ethTransactionTotal = addEth(ethTransactionFee, ethTransactionAmount) dispatch(updateTransactionTotals({ fiatTransactionTotal, ethTransactionTotal })) } } export function setTransactionToConfirm (transactionId) { return async (dispatch, getState) => { const state = getState() const unconfirmedTransactionsHash = unconfirmedTransactionsHashSelector(state) const transaction = unconfirmedTransactionsHash[transactionId] if (!transaction) { console.error(`Transaction with id ${transactionId} not found`) return } if (transaction.txParams) { const { lastGasPrice } = transaction const txData = lastGasPrice ? increaseFromLastGasPrice(transaction) : transaction dispatch(updateTxDataAndCalculate(txData)) const { txParams } = transaction const { to } = txParams if (txParams.data) { const { tokens: existingTokens } = state const { data, to: tokenAddress } = txParams try { dispatch(setFetchingData(true)) const methodData = await getMethodData(data) dispatch(updateMethodData(methodData)) const toSmartContract = await isSmartContractAddress(to) dispatch(updateToSmartContract(toSmartContract)) dispatch(setFetchingData(false)) } catch (error) { dispatch(updateMethodData({})) dispatch(setFetchingData(false)) } const tokenData = getTokenData(data) dispatch(updateTokenData(tokenData)) try { const tokenSymbolData = await getSymbolAndDecimals(tokenAddress, existingTokens) || {} const { symbol: tokenSymbol = '', decimals: tokenDecimals = '' } = tokenSymbolData dispatch(updateTokenProps({ tokenSymbol, tokenDecimals })) } catch (error) { dispatch(updateTokenProps({ tokenSymbol: '', tokenDecimals: '' })) } } if (txParams.nonce) { const nonce = conversionUtil(txParams.nonce, { fromNumericBase: 'hex', toNumericBase: 'dec', }) dispatch(updateNonce(nonce)) } } else { dispatch(updateTxData(transaction)) } } } export function clearConfirmTransaction () { return { type: CLEAR_CONFIRM_TRANSACTION, } }