ISEbd-21.Fedotov.I.A.Diner/Diner/DinerDataBaseImplement/Models/Order.cs

using DinerContracts.BindingModels;
using DinerContracts.ViewModels;
using DinerDataBaseImplement.Implements;
using DinerDataModels.Enums;
using DinerDataModels.Models;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Net.Http.Headers;
using System.Runtime.Serialization;
using System.Xml.Linq;

namespace DinerDataBaseImplement.Models
{
    [DataContract]
    public class Order : IOrderModel
    {
        [ForeignKey("SnackID")]
        [DataMember]
        public int SnackID { get; set; }

        [Required]
        [DataMember]
        public int ClientID { get; set; }

        [DataMember]
		public int? ImplementerID { get; set; }

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

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

        [Required]
        [DataMember]
        public OrderStatus Status { get; set; }

        [Required]
        [DataMember]
        public DateTime DateCreate { get; private set; }

        [DataMember]
        public DateTime? DateImplement { get; set; }

        [DataMember]
        public int ID { get; private set; }

        public virtual Snack Snack { get; set; } 
        public virtual Client Client { get; set; } 
        public virtual Implementer? Implementer { get; set; }

		public static Order? Create(OrderBindingModel model)
        {
            if (model == null) return null;
            return new Order()
            {
                ID = model.ID,
                SnackID = model.SnackID,
                Count = model.Count,
                Sum = model.Sum,
                Status = model.Status,
                DateCreate = model.DateCreate,
                DateImplement = model.DateImplement,
                ClientID = model.ClientID,
                ImplementerID = model.ImplementerID,
            };
        }
        public void Update(OrderBindingModel? model)
        {
            if (model == null) return;
            if (model.Sum != 0) {
				Sum = model.Sum;
			}		
			Status = model.Status;
            DateImplement = model?.DateImplement;
			ImplementerID = model?.ImplementerID;
		}
        public OrderViewModel GetViewModel => new() {
            ID = ID,
            SnackID = SnackID,
            Count = Count,
            Sum = Sum,
            Status = Status,
            DateCreate = DateCreate,
            DateImplement = DateImplement,
            ClientID = ClientID,
            ImplementerID = ImplementerID,
            ClientFIO = Client.ClientFIO,
            ImplementerFIO = Implementer?.ImplementerFIO,
            ProductName = Snack.ProductName
        };
	};
}