metamask-extension/ui/app/pages/confirm-transaction-switch/confirm-transaction-switch.component.js

import React, { Component } from 'react'
import PropTypes from 'prop-types'
import { Redirect } from 'react-router-dom'
import Loading from '../../components/ui/loading-screen'
import {
  CONFIRM_TRANSACTION_ROUTE,
  CONFIRM_DEPLOY_CONTRACT_PATH,
  CONFIRM_SEND_ETHER_PATH,
  CONFIRM_SEND_TOKEN_PATH,
  CONFIRM_APPROVE_PATH,
  CONFIRM_TRANSFER_FROM_PATH,
  CONFIRM_TOKEN_METHOD_PATH,
  SIGNATURE_REQUEST_PATH,
  DECRYPT_MESSAGE_REQUEST_PATH,
  ENCRYPTION_PUBLIC_KEY_REQUEST_PATH,
} from '../../helpers/constants/routes'
import { MESSAGE_TYPE } from '../../../../app/scripts/lib/enums'
import { TRANSACTION_CATEGORIES } from '../../../../shared/constants/transaction'

export default class ConfirmTransactionSwitch extends Component {
  static propTypes = {
    txData: PropTypes.object,
  }

  redirectToTransaction() {
    const { txData } = this.props
    const { id, txParams: { data } = {}, transactionCategory } = txData

    if (transactionCategory === TRANSACTION_CATEGORIES.DEPLOY_CONTRACT) {
      const pathname = `${CONFIRM_TRANSACTION_ROUTE}/${id}${CONFIRM_DEPLOY_CONTRACT_PATH}`
      return <Redirect to={{ pathname }} />
    }

    if (transactionCategory === TRANSACTION_CATEGORIES.SENT_ETHER) {
      const pathname = `${CONFIRM_TRANSACTION_ROUTE}/${id}${CONFIRM_SEND_ETHER_PATH}`
      return <Redirect to={{ pathname }} />
    }

    if (data) {
      switch (transactionCategory) {
        case TRANSACTION_CATEGORIES.TOKEN_METHOD_TRANSFER: {
          const pathname = `${CONFIRM_TRANSACTION_ROUTE}/${id}${CONFIRM_SEND_TOKEN_PATH}`
          return <Redirect to={{ pathname }} />
        }
        case TRANSACTION_CATEGORIES.TOKEN_METHOD_APPROVE: {
          const pathname = `${CONFIRM_TRANSACTION_ROUTE}/${id}${CONFIRM_APPROVE_PATH}`
          return <Redirect to={{ pathname }} />
        }
        case TRANSACTION_CATEGORIES.TOKEN_METHOD_TRANSFER_FROM: {
          const pathname = `${CONFIRM_TRANSACTION_ROUTE}/${id}${CONFIRM_TRANSFER_FROM_PATH}`
          return <Redirect to={{ pathname }} />
        }
        default: {
          const pathname = `${CONFIRM_TRANSACTION_ROUTE}/${id}${CONFIRM_TOKEN_METHOD_PATH}`
          return <Redirect to={{ pathname }} />
        }
      }
    }

    const pathname = `${CONFIRM_TRANSACTION_ROUTE}/${id}${CONFIRM_SEND_ETHER_PATH}`
    return <Redirect to={{ pathname }} />
  }

  render() {
    const { txData } = this.props
    if (txData.txParams) {
      return this.redirectToTransaction()
    } else if (txData.msgParams) {
      let pathname = `${CONFIRM_TRANSACTION_ROUTE}/${txData.id}${SIGNATURE_REQUEST_PATH}`
      if (txData.type === MESSAGE_TYPE.ETH_DECRYPT) {
        pathname = `${CONFIRM_TRANSACTION_ROUTE}/${txData.id}${DECRYPT_MESSAGE_REQUEST_PATH}`
      } else if (txData.type === MESSAGE_TYPE.ETH_GET_ENCRYPTION_PUBLIC_KEY) {
        pathname = `${CONFIRM_TRANSACTION_ROUTE}/${txData.id}${ENCRYPTION_PUBLIC_KEY_REQUEST_PATH}`
      }
      return <Redirect to={{ pathname }} />
    }

    return <Loading />
  }
}