/**
 * @flow
 */

import React from 'react';
import { ScrollView, StatusBar } from 'react-native';
import {
  SafeAreaView,
  createStackNavigator,
  createBottomTabNavigator,
  getActiveChildNavigationOptions,
} from 'react-navigation';

import Ionicons from 'react-native-vector-icons/Ionicons';
import SampleText from './SampleText';
import { Button } from './commonComponents/ButtonWithMargin';

const MyNavScreen = ({ navigation, banner }) => (
  <ScrollView>
    <SafeAreaView forceInset={{ horizontal: 'always', vertical: 'never' }}>
      <SampleText>{banner}</SampleText>
      <Button
        onPress={() => navigation.navigate('Profile', { name: 'Jordan' })}
        title="Open profile screen"
      />
      <Button
        onPress={() => navigation.navigate('NotifSettings')}
        title="Open notifications screen"
      />
      <Button
        onPress={() => navigation.navigate('SettingsTab')}
        title="Go to settings tab"
      />
      <Button onPress={() => navigation.goBack(null)} title="Go back" />
    </SafeAreaView>
    <StatusBar barStyle="default" />
  </ScrollView>
);

const MyHomeScreen = ({ navigation }) => (
  <MyNavScreen banner="Home Screen" navigation={navigation} />
);

const MyProfileScreen = ({ navigation }) => (
  <MyNavScreen
    banner={`${navigation.state.params.name}s Profile`}
    navigation={navigation}
  />
);

const MyNotificationsSettingsScreen = ({ navigation }) => (
  <MyNavScreen banner="Notifications Screen" navigation={navigation} />
);

const MySettingsScreen = ({ navigation }) => (
  <MyNavScreen banner="Settings Screen" navigation={navigation} />
);

const TabNav = createBottomTabNavigator(
  {
    MainTab: {
      screen: MyHomeScreen,
      path: '/',
      navigationOptions: {
        title: 'Welcome',
        tabBarLabel: 'Home',
        tabBarIcon: ({ tintColor, focused }) => (
          <Ionicons
            name={focused ? 'ios-home' : 'ios-home-outline'}
            size={26}
            style={{ color: tintColor }}
          />
        ),
      },
    },
    SettingsTab: {
      screen: MySettingsScreen,
      path: '/settings',
      navigationOptions: {
        title: 'Settings',
        tabBarIcon: ({ tintColor, focused }) => (
          <Ionicons
            name={focused ? 'ios-settings' : 'ios-settings-outline'}
            size={26}
            style={{ color: tintColor }}
          />
        ),
      },
    },
  },
  {
    tabBarPosition: 'bottom',
    animationEnabled: false,
    swipeEnabled: false,
  }
);

TabNav.navigationOptions = ({ navigation, screenProps }) => {
  const childOptions = getActiveChildNavigationOptions(navigation, screenProps);
  return {
    title: childOptions.title,
  };
};

const StacksOverTabs = createStackNavigator({
  Root: {
    screen: TabNav,
  },
  NotifSettings: {
    screen: MyNotificationsSettingsScreen,
    navigationOptions: {
      title: 'Notifications',
    },
  },
  Profile: {
    screen: MyProfileScreen,
    path: '/people/:name',
    navigationOptions: ({ navigation }) => ({
      title: `${navigation.state.params.name}'s Profile!`,
    }),
  },
});

export default StacksOverTabs;