ISEbd-21_Tukaeva_A_A_School/School/SchoolDatabaseImplements/Models/Payment.cs

using SchoolContracts.BindingModel;
using SchoolContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SchoolDatabaseImplement.Models
{
	public class Payment
	{
		public int Id { get; private set; }
		[Required]
		public int LessonId { get; private set; }
		public double Sum { get; private set; }
		public double Remains { get; private set; }
		[Required]
		public DateTime? DateOfPayment { get; private set; } = DateTime.Now;
		public virtual Lesson Lesson { get; private set; } = new();
		public static Payment? Create(SchoolDatabase context, PaymentBindingModel? model)
		{
			if (model == null)
			{
				return null;
			}

			return new Payment()
			{
				Id = model.Id,
				Lesson = context.Lessons.First(x => x.Id == model.LessonId),
				Sum = model.Sum,
				Remains = model.Remains,
				DateOfPayment = model.DateOfPayment
			};
		}
		public void Update(PaymentBindingModel? model)
		{
			if (model == null)
			{
				return;
			}
			Id = model.Id;
			LessonId = model.LessonId;
			Sum = model.Sum;
			Remains = model.Remains;
			DateOfPayment = model.DateOfPayment;
		}


		public PaymentViewModel GetViewModel
		{
			get
			{
				var context = new SchoolDatabase();
				return new()
				{
					Id = Id,
					LessonId = LessonId,
					Sum = Sum,
					Remains = Remains,
					DateOfPayment = DateOfPayment
				};
			}
		}
	}
}