import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:ontime_user_flutter/data/api/api_client.dart';
import 'package:ontime_user_flutter/features/auth/data/auth_api.dart';
import 'package:ontime_user_flutter/features/auth/data/models/user_model.dart';
import 'package:shared_preferences/shared_preferences.dart';

class AuthState {
  const AuthState({
    this.user,
    this.isLoading = false,
    this.errorMessage,
  });

  final UserModel? user;
  final bool isLoading;
  final String? errorMessage;

  AuthState copyWith({
    UserModel? user,
    bool? isLoading,
    String? errorMessage,
  }) {
    return AuthState(
      user: user ?? this.user,
      isLoading: isLoading ?? this.isLoading,
      errorMessage: errorMessage,
    );
  }
}

final authControllerProvider =
    StateNotifierProvider<AuthController, AuthState>((ref) {
  return AuthController();
});

class AuthController extends StateNotifier<AuthState> {
  AuthController() : super(const AuthState());

  late final AuthApi _api =
      AuthApi(ApiClient(basicAuthUser: null, basicAuthPassword: null));

  Future<void> login({
    String? phone,
    String? email,
    required String password,
    String? fcmToken,
  }) async {
    state = state.copyWith(isLoading: true, errorMessage: null);
    try {
      final user = await _api.login(
        phone: phone,
        email: email,
        password: password,
        fcmToken: fcmToken,
      );
      state = state.copyWith(user: user, isLoading: false);

      final prefs = await SharedPreferences.getInstance();
      await prefs.setString('user_id', user.id);
      await prefs.setString('user_token', user.token);
      await prefs.setString('user_phone', user.phone);
      await prefs.setString('user_email', user.email);
    } catch (e) {
      state = state.copyWith(
        isLoading: false,
        errorMessage: e.toString(),
      );
    }
  }
}