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

class AppTheme {
  ThemeMode mode;

  AppTheme(this.mode);

  String get name {
 if (mode == ThemeMode.light) {
      return 'Light';
    }
    if (mode == ThemeMode.dark) {
      return 'Dark';
    }

    return 'System';
  }

  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];
  }

  static listen(Function(Map<String, dynamic>) cb) {
    final db = Localstore.instance;
    final stream = db.collection('settings').stream;
    stream.listen(cb);
  }

  Future<void> toDisk() async {
    final db = Localstore.instance;
    await db.collection('settings').doc('ui').set({'theme': mode.index});
  }

  static Future<AppTheme> fromDisk() async {
    final db = Localstore.instance;
    final doc = await db.collection('settings').doc('ui').get();
    try {
      final index = doc?['theme'];
      final mode = ThemeMode.values[index];
      return AppTheme(mode);
    } catch (_) {
      return AppTheme(ThemeMode.system);
    }
  }

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

    return false;
  }

  @override
  int get hashCode => mode.index;

}