using SecuritySystemContracts.BindingModels;
using SecuritySystemContracts.ViewModels;
using SecuritySystemDataModels.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace SecuritySystemFileImplement.Models
{
    //класс реализующий интерфейс модели изделия
    public class Secure : ISecureModel
    {
        public int Id { get; private set; }

        public string SecureName { get; private set; } = string.Empty;

        public double Price { get; private set; }

        public Dictionary<int, int> Sensors { get; private set; } = new();


        private Dictionary<int, (ISensorModel, int)>? _secureSensors = null;

        public Dictionary<int, (ISensorModel, int)> SecureSensors
        {
            get
            {
                if (_secureSensors == null)
                {
                    var source = DataFileSingleton.GetInstance();

                    _secureSensors = Sensors.ToDictionary(x => x.Key, 
                        y => ((source.Sensors.FirstOrDefault(z => z.Id == y.Key) as ISensorModel)!, y.Value));
                }

                return _secureSensors;
            }
        }

        public static Secure? Create(SecureBindingModel model)
        {
            if (model == null)
            {
                return null;
            }

            return new Secure()
            {
                Id = model.Id,
                SecureName = model.SecureName,
                Price = model.Price,
                Sensors = model.SecureSensors.ToDictionary(x => x.Key, x => x.Value.Item2)
            };
        }

        public static Secure? Create(XElement element)
        {
            if (element == null)
            {
                return null;
            }

            return new Secure()
            {
                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
                SecureName = element.Element("SecureName")!.Value,
                Price = Convert.ToDouble(element.Element("Price")!.Value),
                Sensors = element.Element("SecureSensors")!.Elements("SecureSensors").ToDictionary(
                    x => Convert.ToInt32(x.Element("Key")?.Value), 
                    x => Convert.ToInt32(x.Element("Value")?.Value))
            };
        }

        public void Update(SecureBindingModel model)
        {
            if (model == null)
            {
                return;
            }

            SecureName = model.SecureName;
            Price = model.Price;
            Sensors = model.SecureSensors.ToDictionary(x => x.Key, x => x.Value.Item2);
            _secureSensors = null;
        }

        public SecureViewModel GetViewModel => new()
        {
            Id = Id,
            SecureName = SecureName,
            Price = Price,
            SecureSensors = SecureSensors
        };

        public XElement GetXElement => new("Secure", 
            new XAttribute("Id", Id), 
            new XElement("SecureName", SecureName), 
            new XElement("Price", Price.ToString()), 
            new XElement("SecureSensors", Sensors.Select(
                x => new XElement("SecureSensors", 
                    new XElement("Key", x.Key), 
                    new XElement("Value", x.Value))
                ).ToArray()));
    }
}