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("UserID")]
        public int UserID { get; set; }
        [Required]
        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
        [Required]
        public PaymeantOption PaymeantOption { get; set; } = PaymeantOption.Неизвестно;
        [Required]
        public DateTime DateCreate {  get; set; } = DateTime.Now;
        [Required]
        public DateTime? DateImplement { get; set; }
        [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<OrderProducts> Products { get; set; } = new();

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

        public OrderViewModel GetViewModel => new()
        {
            ID = ID,
            UserID = UserID,
            Sum = Sum,
            PaymeantOption = PaymeantOption,
            Status = Status,
            DateCreate = DateCreate,
            DateImplement = DateImplement,
            ProductList = ProductList
        };
    }
}