import { addHexPrefix } from 'ethereumjs-util' import { conversionRateSelector, currentCurrencySelector, unconfirmedTransactionsHashSelector, getNativeCurrency, } from '../../selectors' import { getValueFromWeiHex, getTransactionFee, getHexGasTotal, addFiat, addEth, increaseLastGasPrice, hexGreaterThan, } from '../../helpers/utils/confirm-tx.util' import { getTokenData, sumHexes, } from '../../helpers/utils/transactions.util' import { conversionUtil } from '../../helpers/utils/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_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: '', hexTransactionAmount: '', hexTransactionFee: '', hexTransactionTotal: '', nonce: '', toSmartContract: false, fetchingData: false, } // Reducer export default function reducer (state = initState, action = {}) { switch (action.type) { case UPDATE_TX_DATA: return { ...state, txData: { ...action.payload, }, } case CLEAR_TX_DATA: return { ...state, txData: {}, } case UPDATE_TOKEN_DATA: return { ...state, tokenData: { ...action.payload, }, } case CLEAR_TOKEN_DATA: return { ...state, tokenData: {}, } case UPDATE_METHOD_DATA: return { ...state, methodData: { ...action.payload, }, } case CLEAR_METHOD_DATA: return { ...state, methodData: {}, } case UPDATE_TRANSACTION_AMOUNTS: { const { fiatTransactionAmount, ethTransactionAmount, hexTransactionAmount } = action.payload return { ...state, fiatTransactionAmount: fiatTransactionAmount || state.fiatTransactionAmount, ethTransactionAmount: ethTransactionAmount || state.ethTransactionAmount, hexTransactionAmount: hexTransactionAmount || state.hexTransactionAmount, } } case UPDATE_TRANSACTION_FEES: { const { fiatTransactionFee, ethTransactionFee, hexTransactionFee } = action.payload return { ...state, fiatTransactionFee: fiatTransactionFee || state.fiatTransactionFee, ethTransactionFee: ethTransactionFee || state.ethTransactionFee, hexTransactionFee: hexTransactionFee || state.hexTransactionFee, } } case UPDATE_TRANSACTION_TOTALS: { const { fiatTransactionTotal, ethTransactionTotal, hexTransactionTotal } = action.payload return { ...state, fiatTransactionTotal: fiatTransactionTotal || state.fiatTransactionTotal, ethTransactionTotal: ethTransactionTotal || state.ethTransactionTotal, hexTransactionTotal: hexTransactionTotal || state.hexTransactionTotal, } } case UPDATE_TOKEN_PROPS: { const { tokenSymbol = '', tokenDecimals = '' } = action.payload return { ...state, tokenProps: { ...state.tokenProps, tokenSymbol, tokenDecimals, }, } } case UPDATE_NONCE: return { ...state, nonce: action.payload, } case UPDATE_TO_SMART_CONTRACT: return { ...state, toSmartContract: action.payload, } case FETCH_DATA_START: return { ...state, fetchingData: true, } case FETCH_DATA_END: return { ...state, fetchingData: false, } case CLEAR_CONFIRM_TRANSACTION: return initState default: return state } } // 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 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: addHexPrefix(gasLimit), gasPrice: addHexPrefix(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) const nativeCurrency = getNativeCurrency(state) dispatch(updateTxData(txData)) const { txParams: { value = '0x0', gas: gasLimit = '0x0', gasPrice = '0x0' } = {} } = txData const fiatTransactionAmount = getValueFromWeiHex({ value, fromCurrency: nativeCurrency, toCurrency: currentCurrency, conversionRate, numberOfDecimals: 2, }) const ethTransactionAmount = getValueFromWeiHex({ value, fromCurrency: nativeCurrency, toCurrency: nativeCurrency, conversionRate, numberOfDecimals: 6, }) dispatch(updateTransactionAmounts({ fiatTransactionAmount, ethTransactionAmount, hexTransactionAmount: value, })) const hexTransactionFee = getHexGasTotal({ gasLimit, gasPrice }) const fiatTransactionFee = getTransactionFee({ value: hexTransactionFee, fromCurrency: nativeCurrency, toCurrency: currentCurrency, numberOfDecimals: 2, conversionRate, }) const ethTransactionFee = getTransactionFee({ value: hexTransactionFee, fromCurrency: nativeCurrency, toCurrency: nativeCurrency, numberOfDecimals: 6, conversionRate, }) dispatch(updateTransactionFees({ fiatTransactionFee, ethTransactionFee, hexTransactionFee })) const fiatTransactionTotal = addFiat(fiatTransactionFee, fiatTransactionAmount) const ethTransactionTotal = addEth(ethTransactionFee, ethTransactionAmount) const hexTransactionTotal = sumHexes(value, hexTransactionFee) dispatch(updateTransactionTotals({ fiatTransactionTotal, ethTransactionTotal, hexTransactionTotal, })) } } export function setTransactionToConfirm (transactionId) { return (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 if (txParams.data) { const { data } = txParams const tokenData = getTokenData(data) dispatch(updateTokenData(tokenData)) } 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, } }