Case_accounting/CaseAccounting/CaseAccountingDataBaseImplement/Models/Deal.cs

using CaseAccountingContracts.BindingModels;
using CaseAccountingContracts.ViewModels;
using CaseAccountingDataModels.Models;
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 CaseAccountingDataBaseImplement.Models
{
    public class Deal : IDealModel
    {
        public int Id { get; set; }

        [Required]
        public string Subject { get; set; } = string.Empty;

        [Required]
        public string Responsibilities { get; set; } = string.Empty;

        [Required]
        public DateTime Date { get; set; }

        [Required]
        public int UserId { get; set; }

        public virtual User User { get; set; } = new();

        [ForeignKey("DealId")]
        public virtual List<CaseDeal> CaseDeals { get; set; } = new();

        [ForeignKey("DealId")]
        public virtual List<DealContract> Contracts { get; set; } = new();

        public static Deal? Create(DealBindingModel? model)
        {
            if (model == null)
            {
                return null;
            }
            return new Deal()
            {
                Id = model.Id,
                Subject = model.Subject,
                Responsibilities = model.Responsibilities,
                Date = model.Date,
                UserId = model.UserId,
            };
        }

        public void Update(DealBindingModel? model)
        {
            if (model == null)
            {
                return;
            }
            Subject = model.Subject;
            Responsibilities = model.Responsibilities;
            Date = model.Date;
        }

        public DealViewModel GetViewModel => new()
        {
            Id = Id,
            Subject = Subject,
            Responsibilities = Responsibilities,
            Date = Date,
            UserId = UserId
        };
    }
}