using ComputerStoreContracts.BindingModels;
using ComputerStoreContracts.ViewModels;
using ComputerStoreDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ComputerStoreDataModels.Enums;
using System.Runtime.ConstrainedExecution;

namespace ComputerStoreDatabaseImplement.Models
{
    public class Order : IOrderModel
    {
        public int ID { get; private set; }
        [Required]
        public double Price { get; private set; }
        [Required]
        public OrderStatus Status { get; private set; } = OrderStatus.Unknown;
        [Required]
        public int SellerID { get; private set; }
        public virtual Seller Seller { get; set; }
        [Required]
        public DateTime DateCreate { get; private set; } = DateTime.Now;
        public DateTime? DateImplement { get; private set; }

        [ForeignKey("OrderID")]
        public virtual List<Consignment> _consignments { get; private set; } = new();
        [ForeignKey("OrderID")]
        public virtual List<Request> _requests { get; private set; } = new();
        [NotMapped]
        public List<IConsignmentModel> OrderConsignments
        {
            get
            {
                return _consignments.Select(x => (IConsignmentModel)x).ToList();
            }
        }
        [NotMapped]
        public List<IRequestModel> OrderRequests
        {
            get
            {
                return _requests.Select(x => (IRequestModel)x).ToList();
            }
        }

        public static Order? Create(ComputerStoreDatabase context, OrderBindingModel? model)
        {
            if (model == null)
            {
                return null;
            }
            return new Order
            {
                ID = model.ID,
                Price = model.Price,
                Status = model.Status,
                SellerID = model.SellerID,
                DateCreate = model.DateCreate,
                DateImplement = model.DateImplement,
                _consignments = model.OrderConsignments.Select(x => context.Consignments.First(y => y.ID == x.ID)).ToList(),
                _requests = model.OrderRequests.Select(x => context.Requests.First(y => y.ID == x.ID)).ToList(),
            };
        }

        public void Update(OrderBindingModel? model)
        {
            if (model == null)
            {
                return;
            }
            Status = model.Status;
            DateImplement = model.DateImplement;
            Price = model.Price;
        }

        public void UpdateOrderRequests(ComputerStoreDatabase context, OrderBindingModel model)
        {
            if (model.OrderRequests == null)
            {
                return;
            }
            _requests = model.OrderRequests.Select(x => context.Requests.First(y => y.ID == x.ID)).ToList();
        }
        public void UpdateOrderConsignments(ComputerStoreDatabase context, OrderBindingModel model)
        {
            if (model.OrderRequests == null)
            {
                return;
            }
            _consignments = model.OrderConsignments.Select(x => context.Consignments.First(y => y.ID == x.ID)).ToList();
        }

        public OrderViewModel GetViewModel
        {
            get
            {
                var context = new ComputerStoreDatabase();
                return new()
                {

                    ID = ID,
                    Price = Price,
                    DateCreate = DateCreate,
                    DateImplement = DateImplement,
                    Status = Status,
                    SellerID = SellerID,
                    SellerUsername = context.Sellers.First(x => x.ID == SellerID)?.Username ?? string.Empty,
                    OrderConsignments = _consignments.Select(x => (IConsignmentModel)x.GetViewModel).ToList(),
                    OrderRequests = _requests.Select(x => (IRequestModel)x.GetViewModel).ToList()
                };
            }
        }
    }
}