import 'dart:async';
import 'package:flutter/material.dart';
import 'package:device_apps/device_apps.dart';
import 'package:android_intent/android_intent.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'pages/Home.dart';
import 'pages/Apps.dart';

import 'data/config.dart';
import 'data/favorites.dart';
import 'helpers/StreamState.dart';

void main() {
  runApp(MyApp());
}

class MyAppState extends StreamState<MyApp> {
  // State
  final config = StreamStateValue<Config>(
      stream$: getConfig$(),
      value: Config(),
  );
  final favoriteApps = StreamStateValue<List<Application>>(
      stream$: getFavorites$(),
      value: [],
  );
  final dateTime = StreamStateValue<DateTime>(
      stream$: Stream.periodic(Duration(seconds: 1), (_x) => DateTime.now()).asBroadcastStream(),
      value: DateTime.now(),
  );
  void initState() {
    super.initState();
    initStateValue(config);
    initConfig();
    initStateValue(favoriteApps);
    initFavorites();
    initStateValue(dateTime);
  }

  Widget buildOptionsMenu(BuildContext ctx, Application app) {
    ThemeData theme = Theme.of(ctx);

    var isFavorite = -1 != favoriteApps.value.indexWhere((a) => a.packageName == app.packageName);

    return Dialog(
      child: Container(
        decoration: BoxDecoration(
          color: theme.backgroundColor,
        ),
        height: 170.0,
        child: ListView(
          children: [
            Option(child: Text(isFavorite ? 'Remove from favorites' : 'Add to favorites'), onTap: () async {
              await isFavorite ? removeFromFavorites(app) : addToFavorites(app);
            }),
            Option(child: Text('App Settings'), onTap: () async {
              await AndroidIntent(
                  action: 'action_application_details_settings',
                  data: 'package:${app.packageName}',
              ).launch();
            }),
            Option(child: Text('Uninstall'),  onTap: () async {
              // FIXME: Doesn't work
              await AndroidIntent(
                  action: 'action_delete',
                  data: 'package:${app.packageName}',
              ).launch();
            }),
          ],
        ),
      ),
    );
  }

  void openApp(Application app) {
    DeviceApps.openApp(app.packageName);
  }

  void openOptionsMenu(BuildContext ctx, Application app) {
    showDialog(context: ctx, builder: (BuildContext ctx) => buildOptionsMenu(ctx, app));
  }

  ThemeData getLightTheme() {
    return ThemeData(brightness: Brightness.light);
  }

  ThemeData getDarkTheme() {
    Color fg = Color(0xFFD8DEE9);
    return ThemeData(
          backgroundColor: Color(0xFF1F2225),
          scaffoldBackgroundColor: Color(0xFF0F1215),
          accentColor: fg,
          primaryColor: Color(0xFF5E81AC),
          textTheme: TextTheme(
              headline1: TextStyle(color: fg),
              headline2: TextStyle(color: fg),
              headline3: TextStyle(color: fg),
              headline4: TextStyle(color: fg),
              headline5: TextStyle(color: fg),
              headline6: TextStyle(color: fg),
              subtitle1: TextStyle(color: fg),
              subtitle2: TextStyle(color: fg),
              bodyText1: TextStyle(color: fg),
              bodyText2: TextStyle(color: fg),
              button: TextStyle(color: fg),
              caption: TextStyle(color: fg),
              overline: TextStyle(color: fg),
          ),
      );
  }

  // This widget is the root of your application.
  @override
  Widget build(BuildContext ctx) {
    return MaterialApp(
      title: 'owyn launcher',
      theme: getLightTheme(),
      darkTheme: getDarkTheme(),
      themeMode: config.value.isDarkMode() ? ThemeMode.dark : ThemeMode.light,
      home: Scaffold(
          body: PageView(
              controller: PageController(keepPage: true),
              children: [
                HomeView(
                    dateTime: dateTime.value,
                    favoriteApps: favoriteApps.value,
                    openApp: openApp,
                    openOptionsMenu: openOptionsMenu,
                ),
                AppsView(
                    openApp: openApp,
                    openOptionsMenu: openOptionsMenu,
                ),
              ],
          ),
      ),
    );
  }
}

class MyApp extends StatefulWidget {
  MyAppState createState() => MyAppState();
}