using SoftwareInstallationDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using SoftwareInstallationContracts.BindingModels;
using SoftwareInstallationContracts.ViewModels;

namespace SoftwareInstallationDatabaseImplement.Models
{
    public class Software : IPackageModel
    {
        public int Id { get; set; }
        [Required]
        public string SoftwareName { get; set; } = string.Empty;
        [Required]
        public double Price { get; set; }
        private Dictionary<int, (IComponentModel, int)>? _SoftwareComponents =
       null;
        [NotMapped]
        public Dictionary<int, (IComponentModel, int)> SoftwareComponents
        {
            get
            {
                if (_SoftwareComponents == null)
                {
                    _SoftwareComponents = Components
                    .ToDictionary(recPC => recPC.ComponentId, recPC =>
                   (recPC.Component as IComponentModel, recPC.Count));
                }
                return _SoftwareComponents;
            }
        }
        [ForeignKey("SoftwareId")]
        public virtual List<PackageComponent> Components { get; set; } = new();
        [ForeignKey("SoftwareId")]
        public virtual List<Order> Orders { get; set; } = new();
        public static Software Create(SoftwareInstallationDataBase context,
       PackageBindingModel model)
        {
            return new Software()
            {
                Id = model.Id,
                SoftwareName = model.SoftwareName,
                Price = model.Price,
                Components = model.SoftwareComponents.Select(x => new
               PackageComponent
                {
                    Component = context.Components.First(y => y.Id == x.Key),
                    Count = x.Value.Item2
                }).ToList()
            };
        }
        public void Update(PackageBindingModel model)
        {
            SoftwareName = model.SoftwareName;
            Price = model.Price;
        }
        public PackageViewModel GetViewModel => new()
        {
            Id = Id,
            SoftwareName = SoftwareName,
            Price = Price,
            SoftwareComponents = SoftwareComponents
        };
        public void UpdateComponents(SoftwareInstallationDataBase context,
       PackageBindingModel model)
        {
            var SoftwareComponents = context.SoftwareComponents.Where(rec =>
           rec.SoftwareId == model.Id).ToList();
            if (SoftwareComponents != null && SoftwareComponents.Count > 0)
            {
                context.SoftwareComponents.RemoveRange(SoftwareComponents.Where(rec
=> !model.SoftwareComponents.ContainsKey(rec.ComponentId)));

                context.SaveChanges();
                foreach (var updateComponent in SoftwareComponents)
                {
                    updateComponent.Count =
                   model.SoftwareComponents[updateComponent.ComponentId].Item2;
                    model.SoftwareComponents.Remove(updateComponent.ComponentId);
                }
                context.SaveChanges();
            }
            var Software = context.Softwares.First(x => x.Id == Id);
            foreach (var pc in model.SoftwareComponents)
            {
                context.SoftwareComponents.Add(new PackageComponent
                {
                    Software = Software,
                    Component = context.Components.First(x => x.Id == pc.Key),
                    Count = pc.Value.Item2
                });
                context.SaveChanges();
            }
            _SoftwareComponents = null;
        }
    }
}