import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'database_provider.dart';

// ── Key constants ─────────────────────────────────────────────────────────────

abstract class SettingsKeys {
  static const reminderEnabled = 'reminder_enabled';
  static const reminderTime = 'reminder_time'; // stored as 'HH:mm'
  static const biometricEnabled = 'biometric_enabled';
  static const themMode = 'theme_mode'; // 'system' | 'light' | 'dark'
  static const modelDownloaded = 'model_downloaded';
  static const onboardingComplete = 'onboarding_complete';
}

// ── Generic setting reader ────────────────────────────────────────────────────

final settingProvider =
    FutureProvider.autoDispose.family<String?, String>((ref, key) {
  return ref.watch(settingsDaoProvider).get(key);
});

// ── Settings notifier ─────────────────────────────────────────────────────────

class SettingsNotifier extends Notifier<AsyncValue<void>> {
  @override
  AsyncValue<void> build() => const AsyncData(null);

  Future<void> set(String key, String value) async {
    await ref.read(settingsDaoProvider).set(key, value);
    if (!ref.mounted) return;
    ref.invalidate(settingProvider(key));
  }

  Future<void> setReminderEnabled(bool enabled) =>
      set(SettingsKeys.reminderEnabled, enabled.toString());

  Future<void> setReminderTime(int hour, int minute) => set(
      SettingsKeys.reminderTime,
      '${hour.toString().padLeft(2, '0')}:${minute.toString().padLeft(2, '0')}');

  Future<void> setBiometricEnabled(bool enabled) =>
      set(SettingsKeys.biometricEnabled, enabled.toString());

  Future<void> setThemeMode(String mode) => set(SettingsKeys.themMode, mode);

  Future<void> markModelDownloaded() =>
      set(SettingsKeys.modelDownloaded, 'true');

  Future<void> markOnboardingComplete() =>
      set(SettingsKeys.onboardingComplete, 'true');
}

final settingsNotifierProvider =
    NotifierProvider.autoDispose<SettingsNotifier, AsyncValue<void>>(
        SettingsNotifier.new);

// ── Convenience bool readers ──────────────────────────────────────────────────

final isOnboardingCompleteProvider =
    FutureProvider.autoDispose<bool>((ref) async {
  final val =
      await ref.watch(settingProvider(SettingsKeys.onboardingComplete).future);
  return val == 'true';
});

final isModelDownloadedProvider = FutureProvider.autoDispose<bool>((ref) async {
  final val =
      await ref.watch(settingProvider(SettingsKeys.modelDownloaded).future);
  return val == 'true';
});