import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:shared_preferences/shared_preferences.dart';

class AppTheme {
  ThemeMode mode;

  AppTheme(this.mode);

  String name(BuildContext context) {
    final trans = AppLocalizations.of(context);

    if (mode == ThemeMode.light) {
      return trans!.themeLight;
    }
    if (mode == ThemeMode.dark) {
      return trans!.themeDark;
    }

    return trans!.themeSystem;
  }

  IconData get icon {
    if (mode == ThemeMode.light) {
      return Icons.light_mode;
    }
    if (mode == ThemeMode.dark) {
      return Icons.dark_mode;
    }

    return Icons.brightness_auto;
  }

  static get auto {
    return AppTheme(ThemeMode.system);
  }

  static get light {
    return AppTheme(ThemeMode.light);
  }

  static get dark {
    return AppTheme(ThemeMode.dark);
  }

  static List<AppTheme> list() {
    return [AppTheme.auto, AppTheme.light, AppTheme.dark];
  }

  Future<void> toDisk() async {
    final SharedPreferences prefs = await SharedPreferences.getInstance();
    await prefs.setInt('theme', mode.index);
  }

  static Future<AppTheme> fromDisk() async {
    final SharedPreferences prefs = await SharedPreferences.getInstance();
    return AppTheme(ThemeMode.values[(prefs.getInt('theme')) ?? 0]);
  }

  @override
  bool operator ==(other) {
    if (other.runtimeType == runtimeType) {
      if (other.hashCode == hashCode) {
        return true;
      }
    }

    return false;
  }

  @override
  int get hashCode => mode.index;
}