using PlumbingRepairContracts.BindingModels;
using PlumbingRepairContracts.ViewModels;
using PlumbingRepairDataModels.Models;
using System.Xml.Linq;

namespace PlumbingRepairFileImplement.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 DateOpening { get; private set; }

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

        private Dictionary<int, (IWorkModel, int)>? _shopWorks = null;
        public Dictionary<int, (IWorkModel, int)> ShopWorks
        {
            get
            {
                if (_shopWorks == null)
                {
                    var source = DataFileSingleton.GetInstance();
                    _shopWorks = Works.ToDictionary(x => x.Key,
                        y => ((source.Works.FirstOrDefault(z => z.Id == y.Key) as IWorkModel)!, y.Value));
                }
                return _shopWorks;
            }
        }

        public int maxCountWorks { get; private set; }


        public static Shop? Create(ShopBindingModel model)
        {
            if (model == null)
            {
                return null;
            }
            return new Shop()
            {
                Id = model.Id,
                ShopName = model.ShopName,
                Address = model.Address,
                DateOpening = model.DateOpening,
                Works = model.ShopWorks.ToDictionary(x => x.Key, x => x.Value.Item2),
                maxCountWorks= model.maxCountWorks,
            };
        }

        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,
                DateOpening = Convert.ToDateTime(element.Element("DateOpening")!.Value),
                maxCountWorks = Convert.ToInt32(element.Element("maxCountWorks")!.Value),
                Works = element.Element("ShopWorks")!.Elements("ShopWork")
                                .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;
            DateOpening = model.DateOpening;
            Works = model.ShopWorks.ToDictionary(x => x.Key, x => x.Value.Item2);
            maxCountWorks = model.maxCountWorks;
            _shopWorks = null;
        }

        public ShopViewModel GetViewModel => new()
        {
            Id = Id,
            ShopName = ShopName,
            Address = Address,
            DateOpening = DateOpening,
            ShopWorks = ShopWorks,
            maxCountWorks = maxCountWorks,
        };

        public XElement GetXElement => new("Shop",
                        new XAttribute("Id", Id),
                        new XElement("ShopName", ShopName),
                        new XElement("Address", Address),
                        new XElement("DateOpening", DateOpening.ToString()),
                        new XElement("maxCountWorks", maxCountWorks.ToString()),
                        new XElement("ShopWorks",
                            Works.Select(x => new XElement("ShopWork",
                                                                new XElement("Key", x.Key),
                                                                new XElement("Value", x.Value))).ToArray()));
    }
}