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import {
conversionRateSelector,
currentCurrencySelector,
unconfirmedTransactionsHashSelector,
} from '../selectors/confirm-transaction'
import {
getTokenData,
getTransactionAmount,
getTransactionFee,
getHexGasTotal,
addFiat,
addEth,
increaseLastGasPrice,
hexGreaterThan,
} from '../helpers/confirm-transaction/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 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')
// Initial state
const initState = {
txData: {},
tokenData: {},
tokenProps: {
tokenDecimals: '',
tokenSymbol: '',
},
fiatTransactionAmount: '',
fiatTransactionFee: '',
fiatTransactionTotal: '',
ethTransactionAmount: '',
ethTransactionFee: '',
ethTransactionTotal: '',
hexGasTotal: '',
nonce: '',
}
// 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_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 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 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 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, gasPrice } = {} } = txData
const fiatTransactionAmount = getTransactionAmount({
value, toCurrency: currentCurrency, conversionRate, numberOfDecimals: 2,
})
const ethTransactionAmount = getTransactionAmount({
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
}
const { lastGasPrice } = transaction
const txData = lastGasPrice ? increaseFromLastGasPrice(transaction) : transaction
dispatch(updateTxDataAndCalculate(txData))
const { txParams } = transaction
if (txParams.data) {
const { tokens: existingTokens } = state
const { data, to: tokenAddress } = txParams
const tokenData = getTokenData(data)
dispatch(updateTokenData(tokenData))
const tokenSymbolData = await getSymbolAndDecimals(tokenAddress, existingTokens) || {}
const { symbol: tokenSymbol = '', decimals: tokenDecimals = '' } = tokenSymbolData
dispatch(updateTokenProps({ tokenSymbol, tokenDecimals }))
}
if (txParams.nonce) {
const nonce = conversionUtil(txParams.nonce, {
fromNumericBase: 'hex',
toNumericBase: 'dec',
})
dispatch(updateNonce(nonce))
}
}
}
export function clearConfirmTransaction () {
return {
type: CLEAR_CONFIRM_TRANSACTION,
}
}
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