temp-reminder-picker.js

import React, { Component } from 'react'
import {
  View,
  TouchableOpacity,
  Switch
} from 'react-native'
import DateTimePicker from 'react-native-modal-datetime-picker-nevo'
import AppText from '../app-text'
import {
  tempReminderObservable,
  saveTempReminder
} from '../../local-storage'
import styles from '../../styles/index'
import { settings as labels } from '../labels'
import padWithZeros from '../helpers/pad-time-with-zeros'

export default class TempReminderPicker extends Component {
  constructor(props) {
    super(props)
    this.state = Object.assign({}, tempReminderObservable.value)
  }

  render() {
    return (
      <TouchableOpacity
        style={styles.settingsSegment}
        onPress={() => this.setState({ isTimePickerVisible: true })}
      >
        <AppText style={styles.settingsSegmentTitle}>
          {labels.tempReminder.title}
        </AppText>
        <View style={{ flexDirection: 'row', alignItems: 'center' }}>
          <View style={{ flex: 1 }}>
            {this.state.time && this.state.enabled ?
              <AppText>{labels.tempReminder.timeSet(this.state.time)}</AppText>
              :
              <AppText>{labels.tempReminder.noTimeSet}</AppText>
            }
          </View>
          <Switch
            value={this.state.enabled}
            onValueChange={switchOn => {
              this.setState({ enabled: switchOn })
              if (switchOn && !this.state.time) {
                this.setState({ isTimePickerVisible: true })
              }
              if (!switchOn) saveTempReminder({ enabled: false })
            }}
          />
          <DateTimePicker
            mode="time"
            isVisible={this.state.isTimePickerVisible}
            onConfirm={jsDate => {
              const time = padWithZeros(jsDate)
              this.setState({
                time,
                isTimePickerVisible: false,
                enabled: true
              })
              saveTempReminder({
                time,
                enabled: true
              })
            }}
            onCancel={() => {
              this.setState({ isTimePickerVisible: false })
              if (!this.state.time) this.setState({enabled: false})
            }}
          />
        </View>
      </TouchableOpacity>
    )
  }
}