using DressAtelierContracts.BindingModels;
using DressAtelierContracts.ViewModels;
using DressAtelierDataModels.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace DressAtelierFileImplement.Models
{
    public class Atelier : IAtelierModel
    {
        public int ID { get; private set; }
        public string Name { get; private set; } = string.Empty;

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

        public DateTime OpeningDate { get; private set; } = DateTime.Now;

        public Dictionary<int, (IDressModel, int)> Dresses {
            get
            {
                if(DressesList.Count == 0)
                {
                    var source = DataFileSingleton.GetInstance();
                    DressesList = CurrentDresses.ToDictionary(x => x.Key, y => ((source.Dresses.FirstOrDefault(z => z.ID == y.Key) as IDressModel)!, y.Value));
                }
                return DressesList;
            }            
        }
        

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

        public int MaxTotalOfDresses { get; private set; }

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

        public static Atelier? Create(AtelierBindingModel? atelier)
        {
            if (atelier == null)
            {
                return null;
            }
            return new Atelier()
            {
                ID = atelier.ID,
                Name = atelier.Name,
                Address = atelier.Address,
                OpeningDate = atelier.OpeningDate,
                CurrentDresses = atelier.DressesList.ToDictionary(x => x.Key,x => x.Value.Item2),
                DressesList = atelier.DressesList,
                CurrentQuantity = atelier.DressesList.Count(),
                MaxTotalOfDresses = atelier.MaxTotalOfDresses
            };
        }

        public static Atelier? Create(XElement element)
        {
            if (element == null)
            {
                return null;
            }
            return new Atelier()
            { 
                ID = Convert.ToInt32(element.Attribute("ID")!.Value),
                Name = element.Element("Name")!.Value,
                Address = element.Element("Address")!.Value,
                OpeningDate = Convert.ToDateTime(element.Element("OpeningDate")!.Value),
                CurrentDresses = element.Element("Dresses")!.Elements("Dress").ToDictionary(x => Convert.ToInt32(x.Element("Key")?.Value), x => Convert.ToInt32(x.Element("Value")?.Value)),
                MaxTotalOfDresses = Convert.ToInt32(element.Element("MaxTotalOfDresses")!.Value),
                CurrentQuantity = Convert.ToInt32(element.Element("CurrentDressesQuantity")!.Value)
            };

        }

        public void Update(AtelierBindingModel? atelier)
        {
            if (atelier == null)
            {
                return;
            }
            Name = atelier.Name;
            Address = atelier.Address;
            CurrentDresses = atelier.DressesList.ToDictionary(x => x.Key, x => x.Value.Item2);
            DressesList = null;
            OpeningDate = atelier.OpeningDate;
            MaxTotalOfDresses = atelier.MaxTotalOfDresses;
        }


        public AtelierViewModel GetViewModel => new()
        {
            ID = ID,
            Name = Name,
            Address = Address,
            OpeningDate = OpeningDate,
            DressesList = DressesList,
            MaxTotalOfDresses = MaxTotalOfDresses
        };

        public XElement GetXElement => new("Atelier", new XAttribute("ID", ID),
                                                      new XElement("Name", Name),
                                                      new XElement("Address", Address),
                                                      new XElement("OpeningDate", OpeningDate.ToString()),
                                                      new XElement("Dresses", DressesList),
                                                      new XElement("MaxTotalOfDresses", MaxTotalOfDresses),
                                                      new XElement("CurrentDressesQuantity", CurrentQuantity));
    }
}