import 'package:audio_service/audio_service.dart';
import 'package:flutter/scheduler.dart';
import 'package:freezer/api/download.dart';
import 'package:freezer/main.dart';
import 'package:freezer/ui/cached_image.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:json_annotation/json_annotation.dart';
import 'package:path_provider/path_provider.dart';
import 'package:ext_storage/ext_storage.dart';
import 'package:path/path.dart' as p;
import 'package:flutter/material.dart';

import 'dart:io';
import 'dart:convert';
import 'dart:async';

part 'settings.g.dart';

Settings settings;

@JsonSerializable()
class Settings {
  //Language
  @JsonKey(defaultValue: null)
  String language;

  //Main
  @JsonKey(defaultValue: false)
  bool ignoreInterruptions;
  @JsonKey(defaultValue: false)
  bool enableEqualizer;

  //Account
  String arl;
  @JsonKey(ignore: true)
  bool offlineMode = false;

  //Quality
  @JsonKey(defaultValue: AudioQuality.MP3_320)
  AudioQuality wifiQuality;
  @JsonKey(defaultValue: AudioQuality.MP3_128)
  AudioQuality mobileQuality;
  @JsonKey(defaultValue: AudioQuality.FLAC)
  AudioQuality offlineQuality;
  @JsonKey(defaultValue: AudioQuality.FLAC)
  AudioQuality downloadQuality;

  //Download options
  String downloadPath;

  @JsonKey(defaultValue: "%artist% - %title%")
  String downloadFilename;
  @JsonKey(defaultValue: true)
  bool albumFolder;
  @JsonKey(defaultValue: true)
  bool artistFolder;
  @JsonKey(defaultValue: false)
  bool albumDiscFolder;
  @JsonKey(defaultValue: false)
  bool overwriteDownload;
  @JsonKey(defaultValue: 2)
  int downloadThreads;
  @JsonKey(defaultValue: false)
  bool playlistFolder;
  @JsonKey(defaultValue: true)
  bool downloadLyrics;
  @JsonKey(defaultValue: false)
  bool trackCover;
  @JsonKey(defaultValue: true)
  bool albumCover;
  @JsonKey(defaultValue: false)
  bool nomediaFiles;
  @JsonKey(defaultValue: ", ")
  String artistSeparator;
  @JsonKey(defaultValue: "%artist% - %title%")
  String singletonFilename;
  @JsonKey(defaultValue: 1400)
  int albumArtResolution;
  @JsonKey(defaultValue: [
    "title",
    "album",
    "artist",
    "track",
    "disc",
    "albumArtist",
    "date",
    "label",
    "isrc",
    "upc",
    "trackTotal",
    "bpm",
    "lyrics",
    "genre",
    "contributors",
    "art"
  ])
  List<String> tags;

  //Appearance
  @JsonKey(defaultValue: Themes.Dark)
  Themes theme;
  @JsonKey(defaultValue: false)
  bool useSystemTheme;
  @JsonKey(defaultValue: true)
  bool colorGradientBackground;
  @JsonKey(defaultValue: false)
  bool blurPlayerBackground;
  @JsonKey(defaultValue: "Deezer")
  String font;
  @JsonKey(defaultValue: false)
  bool lyricsVisualizer;
  @JsonKey(defaultValue: null)
  int displayMode;

  //Colors
  @JsonKey(toJson: _colorToJson, fromJson: _colorFromJson)
  Color primaryColor = Colors.blue;

  static _colorToJson(Color c) => c.value;
  static _colorFromJson(int v) => Color(v ?? Colors.blue.value);

  @JsonKey(defaultValue: false)
  bool useArtColor = false;
  StreamSubscription _useArtColorSub;

  //Deezer
  @JsonKey(defaultValue: 'en')
  String deezerLanguage;
  @JsonKey(defaultValue: 'US')
  String deezerCountry;
  @JsonKey(defaultValue: false)
  bool logListen;
  @JsonKey(defaultValue: null)
  String proxyAddress;

  //LastFM
  @JsonKey(defaultValue: null)
  String lastFMUsername;
  @JsonKey(defaultValue: null)
  String lastFMPassword;

  Settings({this.downloadPath, this.arl});

  ThemeData get themeData {
    //System theme
    if (useSystemTheme) {
      if (SchedulerBinding.instance.window.platformBrightness ==
          Brightness.light) {
        return _themeData[Themes.Light];
      } else {
        if (theme == Themes.Light) return _themeData[Themes.Dark];
        return _themeData[theme];
      }
    }
    //Theme
    return _themeData[theme] ?? ThemeData();
  }

  //Get all available fonts
  List<String> get fonts {
    return ['Deezer', ...GoogleFonts.asMap().keys];
  }

  //JSON to forward into download service
  Map getServiceSettings() {
    return {"json": jsonEncode(this.toJson())};
  }

  void updateUseArtColor(bool v) {
    useArtColor = v;
    if (v) {
      //On media item change set color
      _useArtColorSub =
          AudioService.currentMediaItemStream.listen((event) async {
        if (event == null || event.artUri == null) return;
        this.primaryColor = await imagesDatabase.getPrimaryColor(event.artUri);
        updateTheme();
      });
    } else {
      //Cancel stream subscription
      if (_useArtColorSub != null) {
        _useArtColorSub.cancel();
        _useArtColorSub = null;
      }
    }
  }

  SliderThemeData get _sliderTheme => SliderThemeData(
      thumbColor: primaryColor,
      activeTrackColor: primaryColor,
      inactiveTrackColor: primaryColor.withOpacity(0.2));

  //Load settings/init
  Future<Settings> loadSettings() async {
    String path = await getPath();
    File f = File(path);
    if (await f.exists()) {
      String data = await f.readAsString();
      return Settings.fromJson(jsonDecode(data));
    }
    Settings s = Settings.fromJson({});
    //Set default path, because async
    s.downloadPath = (await ExtStorage.getExternalStoragePublicDirectory(
        ExtStorage.DIRECTORY_MUSIC));
    s.save();
    return s;
  }

  Future save() async {
    File f = File(await getPath());
    await f.writeAsString(jsonEncode(this.toJson()));
    downloadManager.updateServiceSettings();
  }

  Future updateAudioServiceQuality() async {
    //Send wifi & mobile quality to audio service isolate
    await AudioService.customAction('updateQuality', {
      'mobileQuality': getQualityInt(mobileQuality),
      'wifiQuality': getQualityInt(wifiQuality)
    });
  }

  //AudioQuality to deezer int
  int getQualityInt(AudioQuality q) {
    switch (q) {
      case AudioQuality.MP3_128:
        return 1;
      case AudioQuality.MP3_320:
        return 3;
      case AudioQuality.FLAC:
        return 9;
      default:
        return 8;
    }
  }

  //Check if is dark, can't use theme directly, because of system themes, and Theme.of(context).brightness broke
  bool get isDark {
    if (useSystemTheme) {
      if (SchedulerBinding.instance.window.platformBrightness ==
          Brightness.light) return false;
      return true;
    }
    if (theme == Themes.Light) return false;
    return true;
  }

  static const deezerBg = Color(0xFF1F1A16);
  static const deezerBottom = Color(0xFF1b1714);
  TextTheme get _textTheme =>
      (font == 'Deezer') ? null : GoogleFonts.getTextTheme(font);
  String get _fontFamily => (font == 'Deezer') ? 'MabryPro' : null;

  MaterialColor get _primarySwatch =>
      MaterialColor(primaryColor.value, <int, Color>{
        50: primaryColor.withOpacity(.1),
        100: primaryColor.withOpacity(.2),
        200: primaryColor.withOpacity(.3),
        300: primaryColor.withOpacity(.4),
        400: primaryColor.withOpacity(.5),
        500: primaryColor.withOpacity(.6),
        600: primaryColor.withOpacity(.7),
        700: primaryColor.withOpacity(.8),
        800: primaryColor.withOpacity(.9),
        900: primaryColor.withOpacity(1),
      });

  Map<Themes, ThemeData> get _themeData => {
        Themes.Light: ThemeData(
          textTheme: _textTheme,
          fontFamily: _fontFamily,
          brightness: Brightness.light,
          primaryColor: primaryColor,
          primarySwatch: _primarySwatch,
          accentColor: primaryColor,
          sliderTheme: _sliderTheme,
          toggleableActiveColor: primaryColor,
          bottomAppBarColor: Color(0xfff5f5f5),
          appBarTheme: AppBarTheme(brightness: Brightness.light),
        ),
        Themes.Dark: ThemeData(
          textTheme: _textTheme,
          fontFamily: _fontFamily,
          brightness: Brightness.dark,
          primaryColor: primaryColor,
          primarySwatch: _primarySwatch,
          accentColor: primaryColor,
          sliderTheme: _sliderTheme,
          toggleableActiveColor: primaryColor,
          appBarTheme: AppBarTheme(brightness: Brightness.dark),
        ),
        Themes.Deezer: ThemeData(
            textTheme: _textTheme,
            fontFamily: _fontFamily,
            brightness: Brightness.dark,
            primaryColor: primaryColor,
            primarySwatch: _primarySwatch,
            accentColor: primaryColor,
            sliderTheme: _sliderTheme,
            toggleableActiveColor: primaryColor,
            backgroundColor: deezerBg,
            scaffoldBackgroundColor: deezerBg,
            bottomAppBarColor: deezerBottom,
            dialogBackgroundColor: deezerBottom,
            bottomSheetTheme:
                BottomSheetThemeData(backgroundColor: deezerBottom),
            appBarTheme: AppBarTheme(brightness: Brightness.dark),
            cardColor: deezerBg),
        Themes.Black: ThemeData(
          textTheme: _textTheme,
          fontFamily: _fontFamily,
          brightness: Brightness.dark,
          primaryColor: primaryColor,
          primarySwatch: _primarySwatch,
          accentColor: primaryColor,
          backgroundColor: Colors.black,
          scaffoldBackgroundColor: Colors.black,
          bottomAppBarColor: Colors.black,
          dialogBackgroundColor: Colors.black,
          sliderTheme: _sliderTheme,
          toggleableActiveColor: primaryColor,
          bottomSheetTheme: BottomSheetThemeData(
            backgroundColor: Colors.black,
          ),
          appBarTheme: AppBarTheme(brightness: Brightness.dark),
        )
      };

  Future<String> getPath() async =>
      p.join((await getApplicationDocumentsDirectory()).path, 'settings.json');

  //JSON
  factory Settings.fromJson(Map<String, dynamic> json) =>
      _$SettingsFromJson(json);
  Map<String, dynamic> toJson() => _$SettingsToJson(this);
}

enum AudioQuality { MP3_128, MP3_320, FLAC, ASK }

enum Themes { Light, Dark, Deezer, Black }