metamask-extension/ui/app/pages/permissions-connect/permissions-connect.component.js

import PropTypes from 'prop-types'
import React, { Component } from 'react'
import { Switch, Route } from 'react-router-dom'
import { getEnvironmentType } from '../../../../app/scripts/lib/util'
import { ENVIRONMENT_TYPE_NOTIFICATION } from '../../../../shared/constants/app'
import { DEFAULT_ROUTE } from '../../helpers/constants/routes'
import PermissionPageContainer from '../../components/app/permission-page-container'
import ChooseAccount from './choose-account'
import PermissionsRedirect from './redirect'

const APPROVE_TIMEOUT = 1200

export default class PermissionConnect extends Component {
  static propTypes = {
    approvePermissionsRequest: PropTypes.func.isRequired,
    rejectPermissionsRequest: PropTypes.func.isRequired,
    getRequestAccountTabIds: PropTypes.func.isRequired,
    getCurrentWindowTab: PropTypes.func.isRequired,
    accounts: PropTypes.array.isRequired,
    currentAddress: PropTypes.string.isRequired,
    origin: PropTypes.string,
    showNewAccountModal: PropTypes.func.isRequired,
    newAccountNumber: PropTypes.number.isRequired,
    nativeCurrency: PropTypes.string,
    permissionsRequest: PropTypes.object,
    addressLastConnectedMap: PropTypes.object.isRequired,
    lastConnectedInfo: PropTypes.object.isRequired,
    permissionsRequestId: PropTypes.string,
    history: PropTypes.object.isRequired,
    connectPath: PropTypes.string.isRequired,
    confirmPermissionPath: PropTypes.string.isRequired,
    page: PropTypes.string.isRequired,
    targetDomainMetadata: PropTypes.shape({
      extensionId: PropTypes.string,
      icon: PropTypes.string,
      host: PropTypes.string.isRequired,
      name: PropTypes.string.isRequired,
      origin: PropTypes.string.isRequired,
    }),
  }

  static defaultProps = {
    origin: '',
    nativeCurrency: '',
    permissionsRequest: undefined,
    permissionsRequestId: '',
  }

  static contextTypes = {
    t: PropTypes.func,
  }

  state = {
    redirecting: false,
    selectedAccountAddresses: new Set([this.props.currentAddress]),
    permissionsApproved: null,
    origin: this.props.origin,
    targetDomainMetadata: this.props.targetDomainMetadata || {},
  }

  beforeUnload = () => {
    const { permissionsRequestId, rejectPermissionsRequest } = this.props
    const { permissionsApproved } = this.state

    if (permissionsApproved === null && permissionsRequestId) {
      rejectPermissionsRequest(permissionsRequestId)
    }
  }

  removeBeforeUnload = () => {
    const environmentType = getEnvironmentType()
    if (environmentType === ENVIRONMENT_TYPE_NOTIFICATION) {
      window.removeEventListener('beforeunload', this.beforeUnload)
    }
  }

  componentDidMount() {
    const {
      getCurrentWindowTab,
      getRequestAccountTabIds,
      permissionsRequest,
      history,
    } = this.props
    getCurrentWindowTab()
    getRequestAccountTabIds()

    if (!permissionsRequest) {
      history.push(DEFAULT_ROUTE)
      return
    }

    const environmentType = getEnvironmentType()
    if (environmentType === ENVIRONMENT_TYPE_NOTIFICATION) {
      window.addEventListener('beforeunload', this.beforeUnload)
    }
  }

  static getDerivedStateFromProps(props, state) {
    const { permissionsRequest, targetDomainMetadata } = props
    const { targetDomainMetadata: savedMetadata } = state

    if (
      permissionsRequest &&
      savedMetadata.origin !== targetDomainMetadata?.origin
    ) {
      return { targetDomainMetadata }
    }
    return null
  }

  componentDidUpdate(prevProps) {
    const { permissionsRequest, lastConnectedInfo } = this.props
    const { redirecting, origin } = this.state

    if (!permissionsRequest && prevProps.permissionsRequest && !redirecting) {
      const accountsLastApprovedTime =
        lastConnectedInfo[origin]?.lastApproved || 0
      const initialAccountsLastApprovedTime =
        prevProps.lastConnectedInfo[origin]?.lastApproved || 0

      const approved =
        accountsLastApprovedTime > initialAccountsLastApprovedTime
      this.redirect(approved)
    }
  }

  selectAccounts = (addresses) => {
    this.setState(
      {
        selectedAccountAddresses: addresses,
      },
      () => this.props.history.push(this.props.confirmPermissionPath),
    )
  }

  redirect(approved) {
    const { history } = this.props
    this.setState({
      redirecting: true,
      permissionsApproved: approved,
    })
    this.removeBeforeUnload()

    if (approved) {
      setTimeout(() => history.push(DEFAULT_ROUTE), APPROVE_TIMEOUT)
    } else {
      history.push(DEFAULT_ROUTE)
    }
  }

  cancelPermissionsRequest = async (requestId) => {
    const { rejectPermissionsRequest } = this.props

    if (requestId) {
      await rejectPermissionsRequest(requestId)
      this.redirect(false)
    }
  }

  goBack() {
    const { history, connectPath } = this.props
    history.push(connectPath)
  }

  renderTopBar() {
    const { redirecting } = this.state
    const { page } = this.props
    const { t } = this.context
    return redirecting ? null : (
      <div className="permissions-connect__top-bar">
        {page === '2' ? (
          <div
            className="permissions-connect__back"
            onClick={() => this.goBack()}
          >
            <i className="fas fa-chevron-left" />
            {t('back')}
          </div>
        ) : null}
        <div className="permissions-connect__page-count">
          {t('xOfY', [page, '2'])}
        </div>
      </div>
    )
  }

  render() {
    const {
      approvePermissionsRequest,
      accounts,
      showNewAccountModal,
      newAccountNumber,
      nativeCurrency,
      permissionsRequest,
      addressLastConnectedMap,
      permissionsRequestId,
      connectPath,
      confirmPermissionPath,
    } = this.props
    const {
      selectedAccountAddresses,
      permissionsApproved,
      redirecting,
      targetDomainMetadata,
    } = this.state

    return (
      <div className="permissions-connect">
        {this.renderTopBar()}
        {redirecting && permissionsApproved ? (
          <PermissionsRedirect domainMetadata={targetDomainMetadata} />
        ) : (
          <Switch>
            <Route
              path={connectPath}
              exact
              render={() => (
                <ChooseAccount
                  accounts={accounts}
                  nativeCurrency={nativeCurrency}
                  selectAccounts={(addresses) => this.selectAccounts(addresses)}
                  selectNewAccountViaModal={(handleAccountClick) => {
                    showNewAccountModal({
                      onCreateNewAccount: (address) =>
                        handleAccountClick(address),
                      newAccountNumber,
                    })
                  }}
                  addressLastConnectedMap={addressLastConnectedMap}
                  cancelPermissionsRequest={(requestId) =>
                    this.cancelPermissionsRequest(requestId)
                  }
                  permissionsRequestId={permissionsRequestId}
                  selectedAccountAddresses={selectedAccountAddresses}
                  targetDomainMetadata={targetDomainMetadata}
                />
              )}
            />
            <Route
              path={confirmPermissionPath}
              exact
              render={() => (
                <PermissionPageContainer
                  request={permissionsRequest || {}}
                  approvePermissionsRequest={(...args) => {
                    approvePermissionsRequest(...args)
                    this.redirect(true)
                  }}
                  rejectPermissionsRequest={(requestId) =>
                    this.cancelPermissionsRequest(requestId)
                  }
                  selectedIdentities={accounts.filter((account) =>
                    selectedAccountAddresses.has(account.address),
                  )}
                  targetDomainMetadata={targetDomainMetadata}
                />
              )}
            />
          </Switch>
        )}
      </div>
    )
  }
}