using LawFirmContracts.BindingModels;
using LawFirmContracts.ViewModels;
using LawFirmDataModels.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace LawFirmFileImplement.Models
{
	public class Shop : IShopModel
	{
		public int Id { get; private set; }
		public string ShopName { get; private set; } = string.Empty;
		public string Address { get; private set; } = string.Empty;
		public DateTime DateOpen { get; private set; }
		public int Capacity { get; private set; }
		public Dictionary<int, int> DocumentsCount = new();
		public Dictionary<int, (IDocumentModel, int)>? _documents = null;
		public Dictionary<int, (IDocumentModel, int)> ShopDocuments
		{
			get
			{
				if (_documents == null)
				{
					var source = DataFileSingleton.GetInstance();
					_documents = DocumentsCount.ToDictionary(
						x => x.Key,
						y => ((source.Documents.FirstOrDefault(z => z.Id == y.Key) as IDocumentModel)!,
							y.Value)
					);
				}
				return _documents;
			}
		}
		public static Shop? Create(ShopBindingModel? model)
		{
			if (model == null)
			{
				return null;
			}
			return new Shop()
			{
				Id = model.Id,
				ShopName = model.ShopName,
				Address = model.Address,
				DateOpen = model.DateOpen,
				Capacity = model.Capacity,
				DocumentsCount = model.ShopDocuments.ToDictionary(x => x.Key, x => x.Value.Item2)
			};
		}
		public static Shop? Create(XElement element)
		{
			if (element == null)
			{
				return null;
			}
			return new Shop()
			{
				Id = Convert.ToInt32(element.Attribute("Id")!.Value),
				ShopName = element.Element("ShopName")!.Value,
				Address = element.Element("Address")!.Value,
				DateOpen = Convert.ToDateTime(element.Element("DateOpening")!.Value),
				Capacity = Convert.ToInt32(element.Element("Capacity")!.Value),
				DocumentsCount = element.Element("Documents")!.Elements("Document")
					.ToDictionary(
						x => Convert.ToInt32(x.Element("Key")?.Value),
						x => Convert.ToInt32(x.Element("Value")?.Value))
			};
		}
		public void Update(ShopBindingModel? model)
		{
			if (model == null)
			{
				return;
			}
			ShopName = model.ShopName;
			Address = model.Address;
			DateOpen = model.DateOpen;
			Capacity = model.Capacity;
			DocumentsCount = model.ShopDocuments.ToDictionary(x => x.Key, x => x.Value.Item2);
			_documents = null;

		}
		public ShopViewModel GetViewModel => new()
		{
			Id = Id,
			ShopName = ShopName,
			Address = Address,
			DateOpen = DateOpen,
			Capacity = Capacity,
			ShopDocuments = ShopDocuments
		};
		public XElement GetXElement => new("Shop",
			new XAttribute("Id", Id),
			new XElement("ShopName", ShopName),
			new XElement("Address", Address),
			new XElement("DateOpening", DateOpen.ToString()),
			new XElement("Capacity", Capacity.ToString()),
			new XElement("Documents", DocumentsCount.Select(x =>
			new XElement("Document",
				new XElement("Key", x.Key),
				new XElement("Value", x.Value)))
				.ToArray()));
	}
}