using System.Collections.Generic;
using System.Linq;

namespace DDD
{
    public static class ItemViewModelFactory
    {
        public static List<ItemViewModel> CreateRestaurantManagementInventoryItem()
        {
            var result = new List<ItemViewModel>();
            var recipeDataMap = DataManager.Instance.RecipeDataSo.GetDataList().ToDictionary(r => r.Id, r => r);
            var foodDataMap = DataManager.Instance.FoodDataSo.GetDataList().ToDictionary(f => f.Id, f => f);
            var drinkDataMap = DataManager.Instance.DrinkDataSo.GetDataList().ToDictionary(d => d.Id, d => d);
            var ingredientDataMap = DataManager.Instance.IngredientDataSo.GetDataList().ToDictionary(i => i.Id, i => i);

            foreach (var kvp in InventoryManager.Instance.InventoryItems)
            {
                var id = kvp.Key;
                var item = InventoryManager.Instance.GetItemDataByIdOrNull(id);
                if (item == null) continue;

                var model = new ItemViewModel
                {
                    Id = item.Id,
                    ItemType = item.ItemType,
                    Count = item.ItemType switch
                    {
                        ItemType.Recipe => CalculateCraftableCount(item.Id),
                        ItemType.Ingredient => InventoryManager.Instance.GetItemCount(id),
                        _ => 0
                    }
                };

                result.Add(model);
            }

            return result;
        }

        private static int CalculateCraftableCount(string recipeId)
        {
            if (!DataManager.Instance.RecipeDataSo.TryGetDataById(recipeId, out var recipe)) return 0;

            string recipeResult = recipe.RecipeResult;

            return recipe.RecipeType switch
            {
                RecipeType.FoodRecipe => DataManager.Instance.FoodDataSo.TryGetDataById(recipeResult, out var food)
                    ? food.GetCraftableCount()
                    : 0,
                RecipeType.DrinkRecipe => DataManager.Instance.DrinkDataSo.TryGetDataById(recipeResult, out var drink)
                    ? drink.GetCraftableCount()
                    : 0,
                _ => 0
            };
        }

        public static ItemViewModel CreateByRecipeId(string recipeId)
        {
            var recipeSo = DataManager.Instance.RecipeDataSo;
            if (!recipeSo.TryGetDataById(recipeId, out var recipe)) return null;

            var item = InventoryManager.Instance.GetItemDataByIdOrNull(recipeId);
            if (item == null) return null;

            var model = new ItemViewModel
            {
                Id = recipeId,
                ItemType = item.ItemType,
            };

            return model;
        }
    }
}