PIbd-23_Sergunov_M.A._SUBD/BookShop/BookShopDataBaseImplement/Models/Order.cs

using BookShopContracts.BindingModels;
using BookShopContracts.ViewModels;
using BookShopDataModels.Models;
using System.ComponentModel.DataAnnotations;

namespace BookShopDataBaseImplement.Models
{
    public class Order : IOrderModel
    {
        public int Id { get; private set; }

        public int BookId { get; private set; }
        [Required]
        public int ClientId { get; set; }

        [Required]
        public int Count { get; private set; }

        [Required]
        public double Sum { get; private set; }

        [Required]
        public DateTime DateCreate { get; private set; } = DateTime.Now;

        public virtual Book Book { get; set; }
        public Client Client { get; set; }

        public static Order? Create(OrderBindingModel? model)
        {
            if (model == null)
            {
                return null;
            }

            return new Order()
            {
                Id = model.Id,
                ClientId = model.ClientId,
                BookId = model.BookId,
                Count = model.Count,
                Sum = model.Sum,
                DateCreate = model.DateCreate
            };
        }

        public void Update(OrderBindingModel? model)
        {
            if (model == null)
            {
                return;
            }
            Id = model.Id;
            ClientId = model.ClientId;
            BookId = model.BookId;
            Count = model.Count;
            Sum = model.Sum;
            DateCreate = model.DateCreate;
        }

        public OrderViewModel GetViewModel
        {
            get
            {
                using var context = new BookShopDatabase();
                return new OrderViewModel
                {
                    Id = Id,
                    ClientId = ClientId,
                    ClientSurname = context.Clients.FirstOrDefault(x => x.Id == ClientId)?.ClientSurname ?? string.Empty,
                    BookName = context.Books.FirstOrDefault(x => x.Id == BookId)?.BookName ?? string.Empty,
                    BookId = BookId,
                    Count = Count,
                    Sum = Sum,
                    DateCreate = DateCreate
                };
            }
        }
    }
}