metamask-extension/ui/app/pages/confirm-token-transaction-base/confirm-token-transaction-base.container.js

import { connect } from 'react-redux'
import { compose } from 'redux'
import { withRouter } from 'react-router-dom'
import {
  contractExchangeRateSelector,
  transactionFeeSelector,
} from '../../selectors'
import { getTokens } from '../../ducks/metamask/metamask'
import { getTokenData } from '../../helpers/utils/transactions.util'
import {
  calcTokenAmount,
  getTokenAddressParam,
  getTokenValueParam,
} from '../../helpers/utils/token-util'
import ConfirmTokenTransactionBase from './confirm-token-transaction-base.component'

const mapStateToProps = (state, ownProps) => {
  const {
    match: { params = {} },
  } = ownProps
  const { id: paramsTransactionId } = params
  const {
    confirmTransaction,
    metamask: { currentCurrency, conversionRate, currentNetworkTxList },
  } = state

  const {
    txData: {
      id: transactionId,
      txParams: { to: tokenAddress, data } = {},
    } = {},
  } = confirmTransaction

  const transaction =
    currentNetworkTxList.find(
      ({ id }) => id === (Number(paramsTransactionId) || transactionId),
    ) || {}

  const { ethTransactionTotal, fiatTransactionTotal } = transactionFeeSelector(
    state,
    transaction,
  )
  const tokens = getTokens(state)
  const currentToken =
    tokens && tokens.find(({ address }) => tokenAddress === address)
  const { decimals, symbol: tokenSymbol } = currentToken || {}

  const tokenData = getTokenData(data)
  const tokenValue = getTokenValueParam(tokenData)
  const toAddress = getTokenAddressParam(tokenData)
  const tokenAmount =
    tokenData && calcTokenAmount(tokenValue, decimals).toFixed()
  const contractExchangeRate = contractExchangeRateSelector(state)

  return {
    toAddress,
    tokenAddress,
    tokenAmount,
    tokenSymbol,
    currentCurrency,
    conversionRate,
    contractExchangeRate,
    fiatTransactionTotal,
    ethTransactionTotal,
  }
}

export default compose(
  withRouter,
  connect(mapStateToProps),
)(ConfirmTokenTransactionBase)