using GiftShopContracts.BindingModels;
using GiftShopContracts.ViewModels;
using GiftShopDataModels.Enums;
using GiftShopDataModels.Models;
using System.Runtime.Serialization;
using System.Xml.Linq;

namespace GiftShopFileImplement.Models
{
	[DataContract]
	public class Order : IOrderModel
    {
		[DataMember]
		public int GiftId { get; private set; }

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

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

		[DataMember]
		public string GiftName { get; private set; } = string.Empty;

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

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

		[DataMember]
		public OrderStatus Status { get; private set; } = OrderStatus.Неизвестен;

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

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

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

        public static Order? Create(OrderBindingModel? model)
        {
            if (model == null)
            {
                return null;
            }
            return new Order()
            {
                Id = model.Id,
                GiftId = model.GiftId,
				GiftName = model.GiftName,
				Count = model.Count,
				ClientId = model.ClientId,
				ImplementerId = model.ImplementerId,
				Sum = model.Sum,
                Status = model.Status,
                DateCreate = model.DateCreate,
                DateImplement = model.DateImplement
            };
        }

        public static Order? Create(XElement element)
        {
            if (element == null)
            {
                return null;
            }
            var order = new Order()
			{
				Id = Convert.ToInt32(element.Attribute("Id")!.Value),
				GiftId = Convert.ToInt32(element.Element("GiftId")!.Value),
				ClientId = Convert.ToInt32(element.Element("ClientId")!.Value),
				Count = Convert.ToInt32(element.Element("Count")!.Value),
				Sum = Convert.ToDouble(element.Element("Sum")!.Value),
				Status = (OrderStatus)Convert.ToInt32(element.Element("Status")!.Value),
				DateCreate = DateTime.ParseExact(element.Element("DateCreate")!.Value, "G", null),
			};

            DateTime.TryParse(element.Element("DateImplement")!.Value, out DateTime dateImpl);
            order.DateImplement = dateImpl;

			if (!Enum.TryParse(element.Element("Status")!.Value, out OrderStatus status))
			{
				return null;
			}
			order.Status = status;

			return order;
        }

        public void Update(OrderBindingModel? model)
        {
            if (model == null)
            {
                return;
			}
			Status = model.Status;
			DateImplement = model.DateImplement;
		}

        public OrderViewModel GetViewModel => new()
		{
			Id = Id,
			GiftId = GiftId,
			ClientId = ClientId,
			ImplementerId = ImplementerId,
			GiftName = GiftName,
			Count = Count,
			Sum = Sum,
			Status = Status,
			DateCreate = DateCreate,
			DateImplement = DateImplement
		};

        public XElement GetXElement => new("Order",
			new XAttribute("Id", Id),
			new XElement("GiftName", GiftName),
			new XElement("GiftId", GiftId.ToString()),
			new XElement("ClientId", ClientId.ToString()),
			new XElement("ImplementerId", ImplementerId.ToString()),
			new XElement("Count", Count.ToString()),
			new XElement("Sum", Sum.ToString()),
			new XElement("Status", Status.ToString()),
			new XElement("DateCreate", DateCreate.ToString()),
			new XElement("DateImplement", DateImplement.ToString()));
	}
}