using CarShowroomContracts.AbstractModels;
using CarShowroomDataModels.Views;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CarShowroomDatabaseStorage.Entities
{
    [Table("sale")]
    public class Sale : ISale
    {
        [Column("sale_id")]
        public int Id { get; private set; }
        [Required]
        [Column("sale_time")]
        public DateTime SaleTime { get; private set; }
        [Required]
        [Column("sale_cost")]
        public int Cost { get; private set; }
        [Column("sale_client_id")]
        public int? ClientId { get; private set; }
        public virtual Client? Client { get; set; }
        [Column("sale_employee_id")]
        public int? EmployeeId { get; private set; }
        public virtual Employee? Employee { get; set; }
        public virtual List<SaleCar> SaleCars { get; set; } = new();
        [NotMapped]
        public List<int> CarIds 
        { 
            get
            {
                return SaleCars.Select(c => c.CarId).ToList();
            }
        }
        public virtual List<SaleService> SaleServices { get; set; } = new();
        [NotMapped]
        public List<int> ServiceIds
        {
            get
            {
                return SaleServices.Select(s => s.ServiceId).ToList();
            }
        }

        private Sale() { }

        private Sale(ISale sale)
        {
            Id = sale.Id;
            SaleTime = sale.SaleTime;
            Cost = sale.Cost;
            ClientId = sale.ClientId;
            EmployeeId = sale.EmployeeId;
        }

        public static Sale? Create(ISale sale)
        {
            if (sale == null)
            {
                return null;
            }
            return new Sale(sale);
        }

        public void Update(ISale sale)
        {
            if (sale == null)
            {
                return;
            }
            SaleTime = sale.SaleTime;
            Cost = sale.Cost;
            ClientId = sale.ClientId;
            EmployeeId = sale.EmployeeId;
        }

        public SaleView GetView()
        {
            SaleView sale = new SaleView(this);
            sale.ClientName = Client?.Name ?? string.Empty;
            sale.EmployeeName = Employee?.Name ?? string.Empty;
            sale.Services = SaleServices.Select(s => s.Service.GetView()).ToList();
            sale.Cars = SaleCars.Select(c => c.Car.GetView()).ToList();
            return sale;
        }
    }
}