using System.Collections.Generic;
using UnityEngine;

namespace DDD
{
    public class TodayMenuView : MonoBehaviour, IEventHandler<TodayMenuAddedEvent>, IEventHandler<TodayMenuRemovedEvent>
    {
        [SerializeField] private GameObject _slotPrefab;

        [SerializeField] private Transform _todayFoodContent;
        [SerializeField] private Transform _todayDrinkContent;

        private List<IInventorySlotUi> _foodSlots;
        private List<IInventorySlotUi> _drinkSlots;

        private RestaurantManagementSo _restaurantManagementSo;

        private async void Start()
        {
            EventBus.Register<TodayMenuAddedEvent>(this);
            EventBus.Register<TodayMenuRemovedEvent>(this);

            _restaurantManagementSo = await AssetManager.LoadAsset<RestaurantManagementSo>(DataConstants.RestaurantManagementSo);

            foreach (Transform child in _todayFoodContent)
            {
                Destroy(child.gameObject);
            }

            int maxFoodCount = _restaurantManagementSo.MaxFoodCount;
            _foodSlots = new List<IInventorySlotUi>(maxFoodCount);
            for (int i = 0; i < _restaurantManagementSo.MaxFoodCount; i++)
            {
                var go = Instantiate(_slotPrefab, _todayFoodContent);
                var slot = go.GetComponent<IInventorySlotUi>();
                slot.Initialize(null, RecipeType.FoodRecipe);
                var todayMenuInteractor = go.GetComponent<TodayMenuInteractor>();
                todayMenuInteractor.Initialize(TodayMenuEventType.Remove);

                _foodSlots.Add(slot);
            }

            foreach (Transform child in _todayDrinkContent)
            {
                Destroy(child.gameObject);
            }

            int maxDrinkCount = _restaurantManagementSo.MaxDrinkCount;
            _drinkSlots = new List<IInventorySlotUi>(maxDrinkCount);
            for (int i = 0; i < _restaurantManagementSo.MaxDrinkCount; i++)
            {
                var go = Instantiate(_slotPrefab, _todayDrinkContent);
                var slot = go.GetComponent<IInventorySlotUi>();
                slot.Initialize(null, RecipeType.DrinkRecipe);
                var todayMenuInteractor = go.GetComponent<TodayMenuInteractor>();
                todayMenuInteractor.Initialize(TodayMenuEventType.Remove);

                _drinkSlots.Add(slot);
            }

            UpdateView();
        }

        private void OnDestroy()
        {
            EventBus.Unregister<TodayMenuAddedEvent>(this);
            EventBus.Unregister<TodayMenuRemovedEvent>(this);
        }

        public void Invoke(TodayMenuAddedEvent evt)
        {
            UpdateView();
        }

        public void Invoke(TodayMenuRemovedEvent evt)
        {
            UpdateView();
        }

        private void UpdateView()
        {
            for (int i = 0; i < _foodSlots.Count; i++)
            {
                if (i < _restaurantManagementSo.FoodRecipeIds.Count)
                {
                    string recipeId = _restaurantManagementSo.FoodRecipeIds[i];
                    var model = ItemViewModelFactory.CreateByRecipeId(recipeId);

                    _foodSlots[i].Initialize(model);
                    _foodSlots[i].SetActive(true);
                }
                else
                {
                    _foodSlots[i].Initialize(null, RecipeType.FoodRecipe);
                }
            }
            
            for (int i = 0; i < _drinkSlots.Count; i++)
            {
                if (i < _restaurantManagementSo.DrinkRecipeIds.Count)
                {
                    string recipeId = _restaurantManagementSo.DrinkRecipeIds[i];
                    var model = ItemViewModelFactory.CreateByRecipeId(recipeId);

                    _drinkSlots[i].Initialize(model);
                    _drinkSlots[i].SetActive(true);
                }
                else
                {
                    _drinkSlots[i].Initialize(null, RecipeType.DrinkRecipe);
                }
            }
        }
    }
}