ISEbd-22_Rozhkov.I.E._Simple/GasStation/Entities/Selling.cs

using System.Collections;
using System.ComponentModel;

namespace GasStation.Entities;

public class Selling
{
    public int Id { get; private set; }

    [Browsable(false)]
    public int GasmanId { get; private set; }

    [DisplayName("Имя заправщика")]
    public string GasmanName { get; private set; } = string.Empty;

    [DisplayName("Товары")]
    public string Product => ProdutcSellings != null ? string.Join(", ", ProdutcSellings.Select(x => $"{x.ProductName} {x.Count}")) : string.Empty;

    [Browsable(false)]
    public IEnumerable<ProductSelling> ProdutcSellings { get; private set; } = [];

    [DisplayName("Дата продажи")]
    public DateTime SellingDateTime { get; private set; }

    public static Selling CreateSelling(int id, int gasmanId, IEnumerable<ProductSelling> produtcSellings)
    {
        return new Selling
        {
            Id = id,
            GasmanId = gasmanId,
            SellingDateTime = DateTime.Now,
            ProdutcSellings = produtcSellings
        };
    }

    public void SetProductSelling(IEnumerable<ProductSelling> produtcSellings)
    {
        if (produtcSellings != null && produtcSellings.Any()) 
        {
            ProdutcSellings = produtcSellings;
        }
    }
}