PIbd-23-Radaev-A.V.-GiftShop/GiftShop/GiftShopView/FormSell.cs

using GiftShopContracts.BusinessLogicsContracts;
using GiftShopContracts.SearchModels;
using GiftShopContracts.ViewModels;
using GiftShopDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GiftShopView
{
    public partial class FormSell : Form
    {
        private readonly List<GiftViewModel>? _GiftList;
        IShopLogic _shopLogic;
        IGiftLogic _GiftLogic;
        public FormSell(IGiftLogic GiftLogic, IShopLogic shopLogic)
        {
            InitializeComponent();
            _shopLogic = shopLogic;
            _GiftLogic = GiftLogic;
            _GiftList = GiftLogic.ReadList(null);
            if (_GiftList != null)
            {
                GiftComboBox.DisplayMember = "GiftName";
                GiftComboBox.ValueMember = "Id";
                GiftComboBox.DataSource = _GiftList;
                GiftComboBox.SelectedItem = null;
            }
        }
        public int GiftId
        {
            get
            {
                return Convert.ToInt32(GiftComboBox.SelectedValue);
            }
            set
            {
                GiftComboBox.SelectedValue = value;
            }
        }

        public IGiftModel? GiftModel
        {
            get
            {
                if (_GiftList == null)
                {
                    return null;
                }
                foreach (var elem in _GiftList)
                {
                    if (elem.Id == GiftId)
                    {
                        return elem;
                    }
                }
                return null;
            }
        }


        public int Count
        {
            get { return Convert.ToInt32(CountTextBox.Text); }
            set
            { CountTextBox.Text = value.ToString(); }
        }

        private void SaveButton_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(CountTextBox.Text))
            {
                MessageBox.Show("Заполните поле Количество", "Ошибка",
               MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            if (GiftComboBox.SelectedValue == null)
            {
                MessageBox.Show("Выберите подарок", "Ошибка",
               MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            try
            {
                int count = Convert.ToInt32(CountTextBox.Text);

                bool res = _shopLogic.MakeSell(
                    _GiftLogic.ReadElement(new() { Id = Convert.ToInt32(GiftComboBox.SelectedValue) }),
                    count
                );

                if (!res)
                {
                    throw new Exception("Ошибка при продаже.");
                }

                MessageBox.Show("Продажа прошла успешно");
                DialogResult = DialogResult.OK;
                Close();

            }
            catch (Exception err)
            {
                MessageBox.Show("Ошибка продажи");
                return;
            }
        }
    }
}