SUBD_TransportCompany/TransportCompany/TransportCompanyDatabaseImplement/Models/Cargo.cs

using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using TransportCompanyContracts.BindingModels;
using TransportCompanyContracts.ViewModels;
using TransportCompanyDataModels.Models;

namespace TransportCompanyDatabaseImplement.Models
{
    public class Cargo : ICargoModel
    {
        public int Id {  get; private set; }
        [Required]
        public string CargoName {  get; private set; } = string.Empty;
        [Required]
        public int Weight { get; private set; }

        [ForeignKey("CargoId")]
        public virtual List<Transportation> Transportations { get; set; } = new();

        public static Cargo? Create(CargoBindingModel model)
        {
            if (model == null)
            {
                return null;
            }
            return new Cargo()
            {
                Id = model.Id,
                CargoName = model.CargoName,
                Weight = model.Weight
            };
        }

        public static Cargo Create(CargoViewModel model)
        {
            return new Cargo
            {
                Id = model.Id,
                CargoName = model.CargoName,
                Weight = model.Weight
            };
        }

        public void Update(CargoBindingModel model)
        {
            if (model == null)
            {
                return;
            }
            CargoName = model.CargoName;
            Weight = model.Weight;
        }

        public CargoViewModel GetViewModel => new()
        {
            Id = Id,
            CargoName = CargoName,
            Weight = Weight
        };
    }
}