drip/components/settings/shared/confirm-with-password.js

import React, { Component } from 'react'
import { View, Alert } from 'react-native'

import nodejs from 'nodejs-mobile-react-native'
import { requestHash, openDb } from '../../../db'

import PasswordField from './password-field'
import SettingsButton from '../shared/settings-button'

import settings from '../../../i18n/en/settings'
import { shared } from '../../../i18n/en/labels'

export default class ConfirmWithPassword extends Component {
  constructor() {
    super()
    this.state = {
      password: null
    }
    nodejs.channel.addListener(
      'password-check',
      this.checkPassword,
      this
    )
  }

  componentWillUnmount() {
    nodejs.channel.removeListener('password-check', this.checkPassword)
  }

  resetPasswordInput = () => {
    this.setState({ password: null })
  }


  onIncorrectPassword = () => {
    Alert.alert(
      shared.incorrectPassword,
      shared.incorrectPasswordMessage,
      [{
        text: shared.cancel,
        onPress: this.props.onCancel
      }, {
        text: shared.tryAgain,
        onPress: this.resetPasswordInput
      }]
    )
  }

  checkPassword = async hash => {
    try {
      await openDb(hash)
      this.props.onSuccess()
    } catch (err) {
      this.onIncorrectPassword()
    }
  }

  handlePasswordInput = (password) => {
    this.setState({ password })
  }

  initPasswordCheck = () => {
    requestHash('password-check', this.state.password)
  }

  render() {

    const { password } = this.state
    const labels = settings.passwordSettings

    return (
      <View>
        <PasswordField
          placeholder={labels.enterCurrent}
          value={password}
          onChangeText={this.handlePasswordInput}
        />
        <SettingsButton
          onPress={this.initPasswordCheck}
          disabled={!password}
        >
          {shared.confirmToProceed}
        </SettingsButton>
      </View>
    )

  }
}