import 'package:drift/drift.dart';

import '../database/app_database.dart';
import '../models/settings.dart';

abstract class SettingsService {
  Future<AppSettings> getSettings();

  Future<void> saveSettings(AppSettings settings);
}

class DriftSettingsService implements SettingsService {
  final AppDatabase database;
  static const _settingsId = 'app_settings';

  DriftSettingsService({required this.database});

  AppSettings _mapRowToSettings(AppSettingsRow row) {
    return AppSettings(
      pinRequired: row.pinRequired,
      autoLockEnabled: row.autoLockEnabled,
      themeMode: AppThemeMode.values.firstWhere(
        (mode) => mode.name == row.themeMode,
        orElse: () => AppThemeMode.system,
      ),
      language: AppLanguage.values.firstWhere(
        (language) => language.name == row.language,
        orElse: () => AppLanguage.system,
      ),
      barGridRows: row.barGridRows.clamp(2, 6).toInt(),
    );
  }

  @override
  Future<AppSettings> getSettings() async {
    final query = database.select(database.appSettingsTable)
      ..where((s) => s.id.equals(_settingsId));

    final row = await query.getSingleOrNull();

    if (row == null) return AppSettings.defaults;

    return _mapRowToSettings(row);
  }

  @override
  Future<void> saveSettings(AppSettings settings) async {
    await database
        .into(database.appSettingsTable)
        .insertOnConflictUpdate(
          AppSettingsTableCompanion.insert(
            id: _settingsId,
            pinRequired: Value(settings.pinRequired),
            autoLockEnabled: Value(settings.autoLockEnabled),
            themeMode: Value(settings.themeMode.name),
            language: Value(settings.language.name),
            barGridRows: Value(settings.barGridRows),
          ),
        );
  }
}