using ShipyardContracts.BindingModels;
using ShipyardContracts.ViewModels;
using ShipyardDataModels.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace ShipyardFileImplement.Models
{
    public class Ship : IShipModel
    {
        public int Id { get; private set; }
        public string ShipName { get; private set; } = string.Empty;
        public double Price { get; private set; }
        public Dictionary<int, int> Components { get; private set; } = new();
        private Dictionary<int, (IComponentModel, int)>? _ShipComponents = null;
        public Dictionary<int, (IComponentModel, int)> ShipComponents
        {
            get
            {
                if (_ShipComponents == null)
                {
                    var source = DataFileSingleton.GetInstance();
                    _ShipComponents = Components.ToDictionary(x => x.Key, y =>
                    ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!,
                    y.Value));
                }
                return _ShipComponents;
            }
        }
        public static Ship? Create(ShipBindingModel model)
        {
            if (model == null)
            {
                return null;
            }
            return new Ship()
            {
                Id = model.Id,
                ShipName = model.ShipName,
                Price = model.Price,
                Components = model.ShipComponents.ToDictionary(x => x.Key, x
               => x.Value.Item2)
            };
        }
        public static Ship? Create(XElement element)
        {
            if (element == null)
            {
                return null;
            }
            return new Ship()
            {
                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
                ShipName = element.Element("ShipName")!.Value,
                Price = Convert.ToDouble(element.Element("Price")!.Value),
                Components =
           element.Element("ShipComponents")!.Elements("ShipComponent")
            .ToDictionary(x =>
           Convert.ToInt32(x.Element("Key")?.Value), x =>
           Convert.ToInt32(x.Element("Value")?.Value))
            };
        }
        public void Update(ShipBindingModel model)
        {
            if (model == null)
            {
                return;
            }
            ShipName = model.ShipName;
            Price = model.Price;
            Components = model.ShipComponents.ToDictionary(x => x.Key, x =>
           x.Value.Item2);
            _ShipComponents = null;
        }
        public ShipViewModel GetViewModel => new()
        {
            Id = Id,
            ShipName = ShipName,
            Price = Price,
            ShipComponents = ShipComponents
        };
        public XElement GetXElement => new("Ship",
                         new XAttribute("Id", Id),
                         new XElement("ShipName", ShipName),
                         new XElement("Price", Price.ToString()),
                         new XElement("ShipComponents", Components.Select(x =>
                         new XElement("ShipComponent",
                         new XElement("Key", x.Key),
                         new XElement("Value", x.Value))).ToArray()));
    }
}