import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:simplecloudnotifier/state/globals.dart';

enum ThemeColor {
  Pink(displayStr: 'Pink', key: 'PINK', value: Colors.pink),
  Red(displayStr: 'Red', key: 'RED', value: Colors.red),
  DeepOrange(displayStr: 'Deep-Orange', key: 'DEEPORANGE', value: Colors.deepOrange),
  Orange(displayStr: 'Orange', key: 'ORANGE', value: Colors.orange),
  Amber(displayStr: 'Amber', key: 'AMBER', value: Colors.amber),
  Yellow(displayStr: 'Yellow', key: 'YELLOW', value: Colors.yellow),
  Lime(displayStr: 'Lime', key: 'LIME', value: Colors.lime),
  LightGreen(displayStr: 'Light-Green', key: 'LIGHTGREEN', value: Colors.lightGreen),
  Green(displayStr: 'Green', key: 'GREEN', value: Colors.green),
  Teal(displayStr: 'Teal', key: 'TEAL', value: Colors.teal),
  Cyan(displayStr: 'Cyan', key: 'CYAN', value: Colors.cyan),
  LightBlue(displayStr: 'Light-Blue', key: 'LIGHTBLUE', value: Colors.lightBlue),
  Blue(displayStr: 'Blue', key: 'BLUE', value: Colors.blue),
  Indigo(displayStr: 'Indigo', key: 'INDIGO', value: Colors.indigo),
  Purple(displayStr: 'Purple', key: 'PURPLE', value: Colors.purple),
  DeepPurple(displayStr: 'Deep-Purple', key: 'DEEPPURPLE', value: Colors.deepPurple),
  BlueGrey(displayStr: 'Blue-Grey', key: 'BLUEGREY', value: Colors.blueGrey),
  Brown(displayStr: 'Brown', key: 'BROWN', value: Colors.brown),
  Grey(displayStr: 'Grey', key: 'GREY', value: Colors.grey);

  const ThemeColor({required this.displayStr, required this.key, required this.value});

  final String displayStr;
  final String key;
  final Color value;

  @override
  toString() => displayStr;

  static ThemeColor? parse(String? string) {
    if (string == null) return null;
    return values.firstWhere((e) => e.key == string, orElse: null);
  }
}

class AppTheme extends ChangeNotifier {
  static AppTheme? _singleton = AppTheme._internal();

  factory AppTheme() {
    return _singleton ?? (_singleton = AppTheme._internal());
  }

  AppTheme._internal() {}

  // --------------------------------------------------------------------------

  bool _darkmode = false;
  bool get darkMode => _darkmode;

  ThemeColor _color = ThemeColor.Blue;
  ThemeColor get color => _color;

  void setDarkMode(bool v) {
    _darkmode = v;
    notifyListeners();
    save();
  }

  void switchDarkMode() {
    _darkmode = !_darkmode;
    notifyListeners();
    save();
  }

  void setColor(ThemeColor v) {
    _color = v;
    notifyListeners();
    save();
  }

  // --------------------------------------------------------------------------

  void load() {
    _darkmode = Globals().sharedPrefs.getBool('theme.dark') ?? _darkmode;
    _color = ThemeColor.parse(Globals().sharedPrefs.getString('theme.color')) ?? _color;
  }

  Future<void> save() async {
    await Globals().sharedPrefs.setBool('theme.dark', _darkmode);
    await Globals().sharedPrefs.setString('theme.color', _color.key);
  }
}