import 'dart:async';

import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:immich_mobile/domain/models/user.model.dart';
import 'package:immich_mobile/domain/services/user.service.dart';
import 'package:immich_mobile/providers/infrastructure/user.provider.dart';

class CurrentUserProvider extends StateNotifier<UserDto?> {
  CurrentUserProvider(this._userService) : super(null) {
    unawaited(_userService.tryGetMyUser().then((user) => state = user ?? state));
    streamSub = _userService.watchMyUser().listen((user) => state = user ?? state);
  }

  final UserService _userService;
  late final StreamSubscription<UserDto?> streamSub;

  Future<void> refresh() async {
    try {
      await _userService.refreshMyUser();
    } catch (_) {}
  }

  @override
  void dispose() {
    unawaited(streamSub.cancel());
    super.dispose();
  }
}

final currentUserProvider = StateNotifierProvider<CurrentUserProvider, UserDto?>((ref) {
  return CurrentUserProvider(ref.watch(userServiceProvider));
});

final authUserProvider = Provider<UserDto>((ref) {
  final user = ref.watch(currentUserProvider);
  if (user == null) {
    throw Exception('User must be logged in to access this provider');
  }
  return user;
});