import 'dart:async';
import 'dart:convert';
import 'dart:developer';

import 'package:assessment/services/database_helper.dart';
import 'package:assessment/services/weather_api_client.dart';
import 'package:assessment/views/additional_information.dart';
import 'package:assessment/views/current_weather.dart';
import 'package:assessment/views/current_weather_daily.dart';
import 'package:assessment/widgets/nav_drawer.dart';
import 'package:assessment/widgets/search_place.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:geolocator/geolocator.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'model/weather_forecast_model.dart';
import 'model/weather_model.dart';
import 'package:intl/intl.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}

class Test {
  String tempUnit = "Celsius";
  String tempSymbol = 'C';
  bool tempBool = true;

  double? locLat;
  double? locLng;

  String? locationQuery;
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static final ValueNotifier<ThemeMode> themeNotifier =
      ValueNotifier(ThemeMode.light);

  @override
  Widget build(BuildContext context) {
    SystemChrome.setPreferredOrientations([
      DeviceOrientation.portraitUp,
      DeviceOrientation.portraitDown,
    ]);
    return Provider(
      create: (_) => Test(),
      child: ValueListenableBuilder<ThemeMode>(
        valueListenable: themeNotifier,
        builder: (_, ThemeMode currentMode, __) {
          return MaterialApp(
            // Remove the debug banner
            debugShowCheckedModeBanner: false,
            title: 'WeatherApp',
            theme: ThemeData(primarySwatch: Colors.amber),
            darkTheme: ThemeData.dark(),
            themeMode: currentMode,
            home: HomePage(),
          );
        },
      ),
    );
  }
}

class HomePage extends StatefulWidget {
  const HomePage({Key? key, String? locationName}) : super(key: key);

  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  late WeatherApiClient client = WeatherApiClient();
  late WeatherForecast? data = WeatherForecast();
  late WeatherForecast? searchedData = WeatherForecast();
  late SharedPreferences sharedPreferences;
  var currentLat;
  var currentLng;

  Future<WeatherForecast?> getCurrentLocation(BuildContext context) async {
    sharedPreferences = await SharedPreferences.getInstance();
    //Permission
    LocationPermission permission = await Geolocator.checkPermission();

    if (permission == LocationPermission.denied ||
        permission == LocationPermission.deniedForever) {
      Geolocator.requestPermission();
    } else {
      Position currentPosition = await Geolocator.getCurrentPosition(
          desiredAccuracy: LocationAccuracy.best);

      currentLat = currentPosition.latitude;
      currentLng = currentPosition.longitude;

      String? locationQuery = sharedPreferences.getString("test");
      bool? isRefreshCurrentLoc = sharedPreferences.getBool("isRefreshUserLoc");

      if (locationQuery != null && isRefreshCurrentLoc == false) {
        searchedData = await client.getCurrentWeather(locationQuery);

        return searchedData;
      } else {
        sharedPreferences.setBool("isRefreshCurrentLoc", false);
        sharedPreferences.setDouble("currentLat", currentLat);
        sharedPreferences.setDouble("currentLng", currentLng);
        data = await client.getCurrentWeatherLocation(currentLat, currentLng);
        return data;
      }
    }
  }

  Future<WeatherForecast?> getUserLocation(BuildContext context) async {
    sharedPreferences = await SharedPreferences.getInstance();
    //Permission
    LocationPermission permission = await Geolocator.checkPermission();

    if (permission == LocationPermission.denied ||
        permission == LocationPermission.deniedForever) {
      Geolocator.requestPermission();
    } else {
      Position currentPosition = await Geolocator.getCurrentPosition(
          desiredAccuracy: LocationAccuracy.best);

      currentLat = currentPosition.latitude;
      currentLng = currentPosition.longitude;

      sharedPreferences.setDouble("currentLat", currentLat);
      sharedPreferences.setDouble("currentLng", currentLng);
      data = await client.getCurrentWeatherLocation(currentLat, currentLng);
      return data;
    }
  }

  Future<WeatherForecast?> getSearchedPlaceData(String locationName) async {
    searchedData = await client.getCurrentWeather(locationName);
    return searchedData;
  }

  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    var status = false;

    final test = Provider.of<Test>(context);
    final test2 = context.watch<Test>();
    return Scaffold(
      appBar: AppBar(
        elevation: 0.0,
        title: Text(
          "Weather App",
        ),
        centerTitle: true,
        // leading: IconButton(
        //   onPressed: () {},
        //   icon: Icon(Icons.menu),
        //   color: Colors.yellow,
        // ),
        actions: [
          IconButton(
            icon: Icon(Icons.search),
            onPressed: () {
              Navigator.push(
                context,
                MaterialPageRoute(builder: (context) => SearchPlace()),
              );
            },
          ),
          IconButton(
            icon: Icon(MyApp.themeNotifier.value == ThemeMode.light
                ? Icons.dark_mode
                : Icons.light_mode),
            onPressed: () {
              MyApp.themeNotifier.value =
                  MyApp.themeNotifier.value == ThemeMode.light
                      ? ThemeMode.dark
                      : ThemeMode.light;
            },
          ),
        ],
      ),
      drawer: NavDrawer(),
      body: FutureBuilder(
        future: getCurrentLocation(context),
        builder: (context, AsyncSnapshot<WeatherForecast?> snapshot) {
          if (snapshot.connectionState == ConnectionState.done) {
            if (snapshot.data == null) {
              return const Center(
                child: Text('no data'),
              );
            } else {
              return Container(
                height: MediaQuery.of(context).size.height,
                width: MediaQuery.of(context).size.width,
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.center,
                  children: [
                    currentWeather(
                      snapshot.data!.list![0].weather![0].icon as String,
                      snapshot.data!.list![0].main!.temp as double,
                      snapshot.data!.city!.name as String,
                      test2.tempSymbol,
                    ),
                    SizedBox(height: 20.0),
                    FloatingActionButton(
                      onPressed: () {
                        setState(() {
                          DatabaseHelper.instance.createItem(
                              snapshot.data!.list![0].dt,
                              snapshot.data!.list![0].main!.temp,
                              snapshot.data!.list![0].wind!.speed,
                              snapshot.data!.list![0].main!.humidity as int,
                              snapshot.data!.list![0].main!.pressure as int,
                              snapshot.data!.list![0].main!.feelsLike,
                              snapshot.data!.city!.name.toString(),
                              snapshot.data!.list![0].weather![0].icon
                                  as String,
                              test2.tempSymbol);
                        });
                      },
                      child: const Icon(Icons.favorite),
                      backgroundColor: Colors.green,
                    ),
                    SizedBox(
                      height: 60.0,
                    ),
                    Expanded(
                      child: ListView.builder(
                        shrinkWrap: true,
                        itemCount: 5,
                        itemBuilder: (context, index) {
                          if (snapshot.data!.list!.isNotEmpty) {
                            return ListTile(
                              title:
                                  // Text(convertUnixToReadable(data!.list![index].dt)),
                                  currentWeatherDaily(
                                      snapshot.data!.list![index *= 8].dt
                                          as int,
                                      snapshot.data!.list![index].weather![0]
                                          .icon as String,
                                      snapshot.data!.list![index].main!.temp
                                          as double,
                                      test.tempSymbol),
                              subtitle: additionalInformation(
                                  snapshot.data!.list![index].wind!.speed
                                      as double,
                                  snapshot.data!.list![index].main!.humidity
                                      as int,
                                  snapshot.data!.list![index].main!.pressure
                                      as int,
                                  snapshot.data!.list![index].main!.feelsLike
                                      as double),
                            );
                          } else {
                            return CircularProgressIndicator();
                          }
                        },
                      ),
                    ),
                    FloatingActionButton(
                      onPressed: () {
                        setState(() {
                          sharedPreferences.setBool("isRefreshUserLoc", true);
                          getUserLocation(context);
                        });
                      },
                      child: const Icon(Icons.refresh),
                      backgroundColor: Colors.green,
                    ),
                  ],
                ),
              );
            }

            // }
          } else if (snapshot.connectionState == ConnectionState.waiting) {
            return const Center(child: CircularProgressIndicator());
          }
          return Container();
        },
      ),
    );
  }

  String convertUnixToReadable(timestamp) {
    var converted_timestamp = timestamp * 1000;
    var date = new DateTime.fromMillisecondsSinceEpoch(converted_timestamp);
    String dateFormat = 'MM/dd/yy mm:hh:ss';
    final DateTime docDateTime = DateTime.parse(date.toString());
    var formatted_date = DateFormat(dateFormat).format(docDateTime);
    var formmated_date_day = DateFormat('EEEE').format(docDateTime);

    return formmated_date_day + "\n " + formatted_date;
  }
}