using ElectronicsShopContracts.BindingModels;
using ElectronicsShopContracts.ViewModels;
using ElectronicsShopDataModels.Enums;
using ElectronicsShopDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ElectronicsShopDataBaseImplement.Models
{
    public class Order : IOrderModel
    {
        public int ID { get; set; }
        [Required]
        public double Sum { get; set; }
        [ForeignKey("ClientID")]
        public int ClientID { get; set; }
        [ForeignKey("EmployeeID")]
        public int? EmployeeID { get; set; }
        [Required]
        public DateTime DateCreate {  get; set; } = DateTime.Now;
        [Required]
        public Dictionary<int, (IProductModel, int)> ProductList { get; set; } = new();

        [NotMapped]
        public Dictionary<int, (IProductModel, int)> _productList
        {
            get { 
                if (ProductList == null) {
                    ProductList = Products.ToDictionary(recPC => recPC.ProductID, recPC => (recPC._product as IProductModel, recPC.Count));
                }
                return _productList;
            }
        }

        public virtual List<OrderProduct> Products { get; set; } = new();

        public static Order? Create(Database context ,OrderBindingModel? model)
        {
            if (model == null)
            {
                return null;
            }
            return new Order()
            {
                ID = model.ID,
                ClientID=model.ClientID,
                Sum = model.Sum,
                EmployeeID=model.EmployeeID,
                DateCreate = model.DateCreate,
                Products = model.ProductList.Select(x => new OrderProduct
                {
                    _product = context.Products.First(y => y.ID == x.Key),
                    Count = x.Value.Item2
                }).ToList()
            };
        }
        public void Update(Database context,OrderBindingModel model)
        {
            if (model == null)
            {
                return;
            }
            ID = model.ID;
            ClientID = model.ClientID;
            Sum = model.Sum;
            EmployeeID = model.EmployeeID;
            DateCreate = model.DateCreate;
            Products = model.ProductList.Select(x => new OrderProduct
            {
                _product = context.Products.First(y => y.ID == x.Key),
                Count = x.Value.Item2
            }).ToList();
            //todo ProductList
        }

        public OrderViewModel GetViewModel => new()
        {
            ID = ID,
            ClientID = ClientID,
            Sum = Sum,
            EmployeeID = EmployeeID,
            DateCreate = DateCreate,
            /*
            ProductList = ProductList.Select(x => new OrderProducts
            {
                /_product = context.Products.First(y => y.ID == x.Key)
                Count = x.Value.Item2
            }).ToList()
            */
        };
    }
}