import 'package:flutter/material.dart';
import 'package:initial_folder/models/wishlist_model.dart';
import 'package:initial_folder/services/wishlist_service.dart';

enum ResultState { Loading, NoData, HasData, Error }

class WishlistProvider with ChangeNotifier {
  WishlistProvider() {
    getWishlist();
  }
  WishlistModel? _wishlistModel;
  ResultState? _state;

  String _message = '';
  List _data = [];
  List get data => _data;
  set dataWishlist(List value) {
    _data = value;
    notifyListeners();
  }

  WishlistModel? get result => _wishlistModel;

  ResultState? get state => _state;

  String get message => _message;

  set wishlistModel(WishlistModel wishlist) {
    _wishlistModel = wishlist;
    notifyListeners();
  }

  Future<dynamic> getWishlist() async {
  try {
    _state = ResultState.Loading;
    notifyListeners();

    WishlistModel wishlist = await WishlistService().getWishlist();
    if (wishlist.data.isEmpty) {
      _data = [];
      _state = ResultState.NoData;
      notifyListeners();
      return _message = 'Empty Data';
    } else {
      List<DataWihslistModel> wishlistItems = wishlist.data[0];

      bool allCourseIdNull = wishlistItems.every((item) => item.courseId == null);

      if (allCourseIdNull) {
        _data = [];
        _state = ResultState.NoData;
        notifyListeners();
        return _message = 'course_id nya null';
      } else {
        _data = wishlistItems.map((e) => e.courseId).toList();
        _state = ResultState.HasData; 
        print('wishlist punya data');
        notifyListeners();
        return _wishlistModel = wishlist;
      }
    }
  } catch (e) {
    _state = ResultState.Error;
    notifyListeners();
    return _message = 'Error --> $e';
  }
}
}