PIbd-23_Mochalov_D.V._LawFirm/LawFirm/LawFirm/FormMails.cs

using LawFirm;
using LawFirmContracts.BusinessLogicContracts;
using LawFirmContracts.DI;
using LawFirmContracts.ViewModels;
using Microsoft.Extensions.Logging;
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 LawFirmView
{
    public partial class FormMails : Form
    {
        private readonly ILogger _logger;
        private readonly IMessageInfoLogic _logic;
        private int currentPage = 1;
        public int pageSize = 2;

        public FormMails(ILogger<FormMails> logger, IMessageInfoLogic logic)
        {
            InitializeComponent();
            _logger = logger;
            _logic = logic;
            buttonPrevPage.Enabled = false;
        }

        private void FormMails_Load(object sender, EventArgs e)
        {
            LoadMail();
        }

        private bool LoadMail()
        {
            try
            {
                dataGridView.FillAndConfigGrid(_logic.ReadList(new()
                {
                    Page = currentPage,
                    PageSize = pageSize,
                }));
                _logger.LogInformation("Загрузка писем");

                _logger.LogInformation("Загрузка писем");
                labelPage.Text = $"Страница: {currentPage}";
                return true;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка загрузки писем");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
                MessageBoxIcon.Error);
                return false;
            }
        }

        private void buttonPrevPage_Click(object sender, EventArgs e)
        {
            if (currentPage == 1)
            {
                return;
            }
            currentPage--;
            if (LoadMail())
            {
                buttonNextPage.Enabled = true;
                if (currentPage == 1)
                {
                    buttonPrevPage.Enabled = false;
                }
            }
        }

        private void buttonNextPage_Click(object sender, EventArgs e)
        {
            currentPage++;
            if (!LoadMail() || ((List<MessageInfoViewModel>)dataGridView.DataSource).Count == 0)
            {
                currentPage--;
                LoadMail();
                buttonNextPage.Enabled = false;
            }
            else
            {
                buttonPrevPage.Enabled = true;
            }
        }

        private void buttonReply_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count == 1)
            {
                var form = DependencyManager.Instance.Resolve<FormMail>();
                form.MessageId = (string)(dataGridView.SelectedRows[0].Cells["MessageId"].Value);
                form.ShowDialog();
                LoadMail();
            }
        }
    }
}