///////////////flutter template 1
////////////////////////////////////
///////////////pubspec.yaml////////////////
name: template1
description: A new Flutter project.
version: 1.0.0+1

environment:
  sdk: ">=2.2.2 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  provider: ^4.0.5
  shared_preferences: ^0.5.6+3
  page_transition: ^1.1.5
  flutter_icons: ^1.0.0+1
  cupertino_icons: ^0.1.2

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true

///////////////main.dart////////////////////////////
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'providers/app_provider.dart';
import 'screen/splash.dart';
import 'util/global.dart';

void main(){
  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => AppProvider()),
      ],
      child: MyApp(),
    ),);}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Consumer(
      builder: (BuildContext context, AppProvider appProvider, Widget child) {
        return MaterialApp(
          key: appProvider.key,
          debugShowCheckedModeBanner: false,
          navigatorKey: appProvider.navigatorKey,
          title: G.appName,
          theme: appProvider.theme,
          home: Splash(),
        );});}}

///////////////////////////////global.dart//////////////////////////
import 'package:flutter/material.dart';

class G{
  static String appName = 'Template 1';

  //Colors for theme
  static Color lightPrimary = Colors.white;
  static Color darkPrimary = Colors.black;
  static Color lightAccent = Color(0xff06d6a7);
  static Color darkAccent = Color(0xff06d6a7);
  static Color lightBG = Colors.white;
  static Color darkBG = Colors.black;

  static double width;
  static double height;

  static ThemeData lightTheme = ThemeData(
    fontFamily: "TimesNewRoman",
    backgroundColor: lightBG,
    primaryColor: lightPrimary,
    accentColor:  lightAccent,
    cursorColor: lightAccent,
    scaffoldBackgroundColor: lightBG,
    appBarTheme: AppBarTheme(
      elevation: 0,
      textTheme: TextTheme(
        title: TextStyle(
          fontFamily: "TimesNewRoman",
          color: Colors.black,
          fontSize: 20,
          fontWeight: FontWeight.w800,
        ),
      ),
    ),
  );

  static ThemeData darkTheme = ThemeData(
    fontFamily: "TimesNewRoman",
    brightness: Brightness.dark,
    backgroundColor: darkBG,
    primaryColor: darkPrimary,
    accentColor: darkAccent,
    scaffoldBackgroundColor: darkBG,
    cursorColor: darkAccent,
    appBarTheme: AppBarTheme(
      elevation: 0,
      textTheme: TextTheme(
        title: TextStyle(
          fontFamily: "TimesNewRoman",
          color: lightBG,
          fontSize: 20,
          fontWeight: FontWeight.w800,
        ),),),);

  static List map(List list, Function handler) {
    List result = [];
    for (var i = 0; i < list.length; i++) {
      result.add(handler(i, list[i]));
    }
    return result;
  } }
/////////////////////////app_provider.dart//////////////////////
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:shared_preferences/shared_preferences.dart';

import '../util/global.dart';

class AppProvider extends ChangeNotifier{
  AppProvider(){
    checkTheme();
  }

  ThemeData theme = G.lightTheme;
  Key key = UniqueKey();
  GlobalKey navigatorKey = GlobalKey();

  void setKey(value) {
    key = value;
    notifyListeners();
  }

  void setNavigatorKey(value) {
    navigatorKey = value;
    notifyListeners();
  }

  void setTheme(value, c) {
    theme = value;
    SharedPreferences.getInstance().then((prefs){
      prefs.setString("theme", c).then((val){
        SystemChrome.setEnabledSystemUIOverlays(SystemUiOverlay.values);
        SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
          statusBarColor: c == "dark" ? G.darkPrimary : G.lightPrimary,
          statusBarIconBrightness: c == "dark" ? Brightness.light:Brightness.dark,
        ));});});
    notifyListeners();}

  ThemeData getTheme(value) {
    return theme;
  }

  Future checkTheme() async{
    SharedPreferences prefs = await SharedPreferences.getInstance();
    ThemeData t;
    String r = prefs.getString("theme") == null ? "light" : prefs.getString(
        "theme");

    if(r == "light"){
      t = G.lightTheme;
      setTheme(G.lightTheme, "light");
    }else{
      t = G.darkTheme;
      setTheme(G.darkTheme, "dark");
    }
    return t;
  }}

//////////////////////////////////bottom_nav_bar.dart/////////////////////////
import 'package:flutter/material.dart';
import 'package:flutter_icons/flutter_icons.dart';

BottomNavigationBar bottomNavBar(BuildContext context, Function navigationTapped, int _page) {    
  return BottomNavigationBar(
    backgroundColor: Theme.of(context).primaryColor,
    selectedItemColor: Theme.of(context).accentColor,
    unselectedItemColor: Colors.grey[500],
    elevation: 20,
    type: BottomNavigationBarType.fixed,
    items: [
      BottomNavigationBarItem(
        icon: Icon(
          Feather.home,
        ),
        title: SizedBox(),
      ),

      BottomNavigationBarItem(
        icon: Icon(
          Feather.compass,
        ),
        title: SizedBox(),
        ),

      BottomNavigationBarItem(
        icon: Icon(
          Feather.settings,
        ),
        title: SizedBox(),
      ),
    ],
    onTap: navigationTapped,
    currentIndex: _page,
  );
}
///////////////////////////////////////splash.dart////////////////////////////
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:page_transition/page_transition.dart';

import './main_screen.dart';
import '../util/global.dart';

class Splash extends StatefulWidget {
  @override
  _SplashState createState() => _SplashState();
}

class _SplashState extends State {

  startTimeout() {
    return new Timer(Duration(seconds: 2), handleTimeout);
  }

  void handleTimeout() {
    changeScreen();
  }

  changeScreen() async {
    Navigator.pushReplacement(
      context,
      PageTransition(
        type: PageTransitionType.rightToLeft,
        child: MainScreen(),
      ),);}

  @override
  void initState() {
    super.initState();
    startTimeout();
  }

  @override
  Widget build(BuildContext context) {
    G.height = MediaQuery.of(context).size.height;
    G.width = MediaQuery.of(context).size.width; 
    return Scaffold(
      body: Center(
        child: Column(
//        mainAxisSize: MainAxisSize.max,
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            //Icon(
            //  Feather.book_open,
            //  color: Theme.of(context).accentColor,
            //  size: 70,
            //),
            SizedBox(height: 20,),
            Text(
              "${G.appName}",
              style: TextStyle(
                color: Theme.of(context).accentColor,
                fontSize: 25,
                fontWeight: FontWeight.bold,
              ),),],),),);}}
//////////////////////////////////main_screen.dart//////////////////
import 'package:flutter/material.dart';

import '../widgets/bottom_nav_bar.dart';
import './home.dart';
import './settings.dart';
import './dummy.dart';

class MainScreen extends StatefulWidget{
  @override
  _MainScreenState createState() => _MainScreenState();
}

class _MainScreenState extends State{
  PageController _pageController;
  int _page = 0;

  @override
  void initState(){
    super.initState();
    _pageController = PageController(initialPage: 0);
  }

  @override
  void dispose(){
    super.dispose();
    _pageController.dispose();
  }

  void onPageChanged(int page){
    setState((){ this._page = page;});
  }
  void navigationTapped(int page){
    _pageController.jumpToPage(page);
  }

  @override
  Widget build(BuildContext context) {
   // return WillPopScope(
    //  onWillPop:() => ExitDialog(context),
      return Scaffold(
        body: PageView(
          physics: NeverScrollableScrollPhysics(),
          controller: _pageController,
          onPageChanged: onPageChanged,
          children: [
            Home(),
            Dummy(),
            Setting(),
          ],
        ),
        bottomNavigationBar: bottomNavBar(context, navigationTapped, _page),

   //   ),
     );}}
////////////////////////////////////home.dart////////////////////////////
import 'package:flutter/material.dart';

class Home extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(child:Text('home page',style:TextStyle(fontSize: 40))),
    );
  }
}
/////////////////////////////////settings.dart/////////////////////////
import 'package:flutter/material.dart';
import 'package:flutter_icons/flutter_icons.dart';
import 'package:page_transition/page_transition.dart';
import 'package:provider/provider.dart';

import '../providers/app_provider.dart';
import '../util/global.dart';
import './downloads.dart';
import './favorites.dart';

class Setting extends StatefulWidget {
  @override
  _SettingState createState() => _SettingState();
}

class _SettingState extends State {
  List items = [
    {
      "icon": Feather.heart,
      "title": "Favorites",
      "page": Favorites(),
    },
    {
      "icon": Feather.download,
      "title": "Downloads",
      "page": Downloads(),
    },
    {
      "icon": Feather.moon,
      "title": "Dark Mode"
    },
//    {
//      "icon": Feather.info,
//      "title": "About",
//      "page": Container(),
//    },
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        title: Text(
          "Settings",
        ),),

      body:  ListView.separated(
        padding: EdgeInsets.symmetric(horizontal: 10),
        shrinkWrap: true,
        physics: NeverScrollableScrollPhysics(),
        itemCount: items.length,
        itemBuilder: (BuildContext context, int index) {
          if(items[index]['title'] =="Dark Mode"){
            return SwitchListTile(
              secondary: Icon(
                items[index]['icon'],
              ),
              title: Text(
                items[index]['title'],
              ),
              value: Provider.of(context).theme == G.lightTheme
                  ? false
                  : true,
              onChanged: (v){
                if (v) {
                  Provider.of(context, listen: false)
                      .setTheme(G.darkTheme, "dark");
                } else {
                  Provider.of(context, listen: false)
                      .setTheme(G.lightTheme, "light");
                }},);}

          return ListTile(
            onTap: (){
              if(items[index]['title'] == "About"){

              }else{
               // Provider.of(context, listen: false)
               //     .getFeed();
                Navigator.push(
                  context,
                  PageTransition(
                    type: PageTransitionType.rightToLeft,
                    child: items[index]['page'],
                  ),);}},

            leading: Icon(
              items[index]['icon'],
            ),

            title: Text(
              items[index]['title'],
            ),);},

        separatorBuilder: (BuildContext context, int index) {
          return Divider();
        },),);}}