import 'dart:convert';

import 'package:equatable/equatable.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:shared_preferences/shared_preferences.dart';

import '../../app/constant.dart';
import '../../models/auth_model.dart';
import '../../provider/current_user_provider.dart';
import '../../provider/dio_provider.dart';
import '../../repository/auth_repository.dart';
import '../../repository/base_repository.dart';

// 3. state provider
final loginProvider = StateNotifierProvider<LoginNotifier, LoginState>(
    (ref) => LoginNotifier(ref: ref));

// 2. notifier
class LoginNotifier extends StateNotifier<LoginState> {
  final Ref ref;
  LoginNotifier({required this.ref}) : super(LoginStateInit());
  void login(
      {required String username,
      required String password,
      bool isRememberMe = false}) async {
    try {
      state = LoginStateLoading();
      final resp = await AuthRepository(dio: ref.read(dioProvider))
          .login(username: username, password: password);

      state = LoginStateDone(model: resp);
      //Simpan ke token jk remember me
      if (isRememberMe == true) {
        final shared = await SharedPreferences.getInstance();
        final token = {"date": DateTime.now().toString(), "model": resp.model};
        final tokenEncode = jsonEncode(token);
        await shared.setString(Constant.tokenName, tokenEncode);
        await shared.setString("usernameX", username);
        await shared.setString("passwordX", password);
        await shared.setBool("isRememberMeX", isRememberMe);
      } 
      else {
        // share pref di remove karena remember me tidak di centang
        final shared = await SharedPreferences.getInstance();
        await shared.remove("usernameX");
        await shared.remove("passwordX");
        await shared.remove("isRememberMeX");
      }

      ref.read(currentUserProvider.notifier).state = AuthModel(
        token: resp.token,
        model: resp.model,
      );

      // print(shared.getString(Constant.bearerName));
    } catch (e) {
      if (e is BaseRepositoryException) {
        state = LoginStateError(message: e.message ?? "");
      } else {
        state = LoginStateError(message: e.toString());
      }
    }
  }
}

// 1. state
abstract class LoginState extends Equatable {
  final DateTime date;
  const LoginState(this.date);
  @override
  List<Object?> get props => [date];
}

class LoginStateInit extends LoginState {
  LoginStateInit() : super(DateTime.now());
}

class LoginStateLoading extends LoginState {
  LoginStateLoading() : super(DateTime.now());
}

class LoginStateError extends LoginState {
  final String? message;
  LoginStateError({
    required this.message,
  }) : super(DateTime.now());
}

class LoginStateDone extends LoginState {
  final AuthModel model;
  LoginStateDone({
    required this.model,
  }) : super(DateTime.now());
}