first attempt

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/ClientLogic.cs

@@ -8,6 +8,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 
 namespace ComputersShopBusinessLogic.BusinessLogics
@@ -106,6 +107,14 @@ namespace ComputersShopBusinessLogic.BusinessLogics
             {
                 throw new ArgumentNullException("У клиента отсутствует пароль", nameof(model.Email));
             }
+            if (!Regex.IsMatch(model.Email, @"^[^@\s]+@[^@\s]+\.[^@\s]+$", RegexOptions.IgnoreCase))
+            {
+                throw new ArgumentException("Неправильно введенный email", nameof(model.Email));
+            }
+            if (!Regex.IsMatch(model.Password, @"^^((\w+\d+\W+)|(\w+\W+\d+)|(\d+\w+\W+)|(\d+\W+\w+)|(\W+\w+\d+)|(\W+\d+\w+))[\w\d\W]*$", RegexOptions.IgnoreCase))
+            {
+                throw new ArgumentException("Неправильно введенный пароль", nameof(model.Password));
+            }
             _logger.LogInformation("Client. ClientID:{Id}. ClientFIO: {ClientFIO}. Email:{ Email}. Password: { Password}", model.Id, model.ClientFIO, model.Email, model.Password);
             var element = _clientStorage.GetElement(new ClientSearchModel
             {

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/MessageInfoLogic.cs

@@ -0,0 +1,49 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+    public class MessageInfoLogic : IMessageInfoLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IMessageInfoStorage _messageInfoStorage;
+
+        public MessageInfoLogic(ILogger<OrderLogic> logger, IMessageInfoStorage messageInfoStorage)
+        {
+            _logger = logger;
+            _messageInfoStorage = messageInfoStorage;
+        }
+
+        public bool Create(MessageInfoBindingModel model)
+        {
+            if (_messageInfoStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public List<MessageInfoViewModel>? ReadList(MessageInfoSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ClientId:{ClientId}. MessageId:{MessageId}", model?.ClientId, model?.MessageId);
+            var list = model == null ? _messageInfoStorage.GetFullList() : _messageInfoStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+    }
+}

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -1,4 +1,5 @@
-using ComputersShopContracts.BindingModels;
+using ComputersShopBusinessLogic.MailWorker;
+using ComputersShopContracts.BindingModels;
 using ComputersShopContracts.BusinessLogicContracts;
 using ComputersShopContracts.SearchModels;
 using ComputersShopContracts.StoragesContracts;
@@ -17,10 +18,14 @@ namespace ComputersShopBusinessLogic.BusinessLogics
     {
         private readonly ILogger _logger;
         private readonly IOrderStorage _orderStorage;
-        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+        private readonly AbstractMailWorker _mailWorker;
+        private readonly IClientLogic _clientLogic;
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage, AbstractMailWorker mailWorker, IClientLogic clientLogic)
         {
             _logger = logger;
             _orderStorage = orderStorage;
+            _mailWorker = mailWorker;
+            _clientLogic = clientLogic;
         }
         public bool CreateOrder(OrderBindingModel model)
         {
@@ -31,12 +36,14 @@ namespace ComputersShopBusinessLogic.BusinessLogics
                 return false;
             }
             model.Status = OrderStatus.Принят;
-            if (_orderStorage.Insert(model) == null)
+            var result = _orderStorage.Insert(model);
+            if (result == null)
             {
                 model.Status = OrderStatus.Неизвестен;
                 _logger.LogWarning("Insert operation failed");
                 return false;
             }
+            SendOrderMessage(result.ClientId, $"DNS, Заказ №{result.Id}", $"Заказ №{result.Id} от {result.DateCreate} на сумму {result.Sum:0.00} принят");
             return true;
         }
         public bool StatusUpdate(OrderBindingModel model, OrderStatus newStatus)
@@ -67,12 +74,14 @@ namespace ComputersShopBusinessLogic.BusinessLogics
                 model.DateImplement = viewModel.DateImplement;
             }
             CheckModel(model);
-            if (_orderStorage.Update(model) == null)
+            var result = _orderStorage.Update(model);
+            if (result == null)
             {
                 model.Status--;
                 _logger.LogWarning("Update operation failed");
                 return false;
             }
+            SendOrderMessage(result.ClientId, $"DNS, Заказ №{result.Id}", $"Заказ №{model.Id} изменен статус на {result.Status}");
             return true;
         }
         public bool DeliveryOrder(OrderBindingModel model)
@@ -143,5 +152,20 @@ namespace ComputersShopBusinessLogic.BusinessLogics
             _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
             return element;
         }
+        private bool SendOrderMessage(int clientId, string subject, string text)
+        {
+            var client = _clientLogic.ReadElement(new() { Id = clientId });
+            if (client == null)
+            {
+                return false;
+            }
+            _mailWorker.MailSendAsync(new()
+            {
+                MailAddress = client.Email,
+                Subject = subject,
+                Text = text
+            });
+            return true;
+        }
     }
 }

ComputersShop/ComputersShopBusinessLogic/ComputersShopBusinessLogic.csproj

@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="DocumentFormat.OpenXml" Version="2.19.0" />
+    <PackageReference Include="MailKit" Version="4.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
     <PackageReference Include="PdfSharp.MigraDoc.Standard" Version="1.51.15" />
   </ItemGroup>

ComputersShop/ComputersShopBusinessLogic/MailWorker/AbstractMailWorker.cs

@@ -0,0 +1,100 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.MailWorker
+{
+    public abstract class AbstractMailWorker
+    {
+        protected string _mailLogin = string.Empty;
+
+        protected string _mailPassword = string.Empty;
+
+        protected string _smtpClientHost = string.Empty;
+
+        protected int _smtpClientPort;
+
+        protected string _popHost = string.Empty;
+
+        protected int _popPort;
+
+        private readonly IMessageInfoLogic _messageInfoLogic;
+        private readonly IClientLogic _clientLogic;
+
+        private readonly ILogger _logger;
+
+        public AbstractMailWorker(ILogger<AbstractMailWorker> logger, IMessageInfoLogic messageInfoLogic, IClientLogic clientLogic)
+        {
+            _logger = logger;
+            _messageInfoLogic = messageInfoLogic;
+            _clientLogic = clientLogic;
+        }
+
+        public void MailConfig(MailConfigBindingModel config)
+        {
+            _mailLogin = config.MailLogin;
+            _mailPassword = config.MailPassword;
+            _smtpClientHost = config.SmtpClientHost;
+            _smtpClientPort = config.SmtpClientPort;
+            _popHost = config.PopHost;
+            _popPort = config.PopPort;
+            _logger.LogDebug("Config: {login}, {password}, {clientHost}, {clientPOrt}, {popHost}, {popPort}", _mailLogin, _mailPassword, _smtpClientHost, _smtpClientPort, _popHost, _popPort);
+        }
+
+        public async void MailSendAsync(MailSendInfoBindingModel info)
+        {
+            if (string.IsNullOrEmpty(_mailLogin) || string.IsNullOrEmpty(_mailPassword))
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(_smtpClientHost) || _smtpClientPort == 0)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(info.MailAddress) || string.IsNullOrEmpty(info.Subject) || string.IsNullOrEmpty(info.Text))
+            {
+                return;
+            }
+
+            _logger.LogDebug("Send Mail: {To}, {Subject}", info.MailAddress, info.Subject);
+            await SendMailAsync(info);
+        }
+
+        public async void MailCheck()
+        {
+            if (string.IsNullOrEmpty(_mailLogin) || string.IsNullOrEmpty(_mailPassword))
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(_popHost) || _popPort == 0)
+            {
+                return;
+            }
+
+            if (_messageInfoLogic == null)
+            {
+                return;
+            }
+
+            var list = await ReceiveMailAsync();
+            _logger.LogDebug("Check Mail: {Count} new mails", list.Count);
+            foreach (var mail in list)
+            {
+                mail.ClientId = _clientLogic.ReadElement(new() { Email = mail.SenderName })?.Id;
+                _messageInfoLogic.Create(mail);
+            }
+        }
+
+        protected abstract Task SendMailAsync(MailSendInfoBindingModel info);
+
+        protected abstract Task<List<MessageInfoBindingModel>> ReceiveMailAsync();
+    }
+}

ComputersShop/ComputersShopBusinessLogic/MailWorker/MailKitWorker.cs

@@ -0,0 +1,78 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using MailKit.Net.Pop3;
+using MailKit.Security;
+using Microsoft.Extensions.Logging;
+using System.Net;
+using System.Net.Mail;
+using System.Text;
+
+namespace ComputersShopBusinessLogic.MailWorker
+{
+    public class MailKitWorker : AbstractMailWorker
+    {
+        public MailKitWorker(ILogger<MailKitWorker> logger, IMessageInfoLogic messageInfoLogic, IClientLogic clientLogic) : base(logger, messageInfoLogic, clientLogic) { }
+
+        protected override async Task SendMailAsync(MailSendInfoBindingModel info)
+        {
+            using var objMailMessage = new MailMessage();
+            using var objSmtpClient = new SmtpClient(_smtpClientHost, _smtpClientPort);
+            try
+            {
+                objMailMessage.From = new MailAddress(_mailLogin);
+                objMailMessage.To.Add(new MailAddress(info.MailAddress));
+                objMailMessage.Subject = info.Subject;
+                objMailMessage.Body = info.Text;
+                objMailMessage.SubjectEncoding = Encoding.UTF8;
+                objMailMessage.BodyEncoding = Encoding.UTF8;
+
+                objSmtpClient.UseDefaultCredentials = false;
+                objSmtpClient.EnableSsl = true;
+                objSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
+                objSmtpClient.Credentials = new NetworkCredential(_mailLogin, _mailPassword);
+
+                await Task.Run(() => objSmtpClient.Send(objMailMessage));
+            }
+            catch (Exception)
+            {
+                throw;
+            }
+        }
+
+        protected override async Task<List<MessageInfoBindingModel>> ReceiveMailAsync()
+        {
+            var list = new List<MessageInfoBindingModel>();
+            using var client = new Pop3Client();
+            await Task.Run(() =>
+            {
+                try
+                {
+                    client.Connect(_popHost, _popPort, SecureSocketOptions.SslOnConnect);
+                    client.Authenticate(_mailLogin, _mailPassword);
+                    for (int i = 0; i < client.Count; i++)
+                    {
+                        var message = client.GetMessage(i);
+                        foreach (var mail in message.From.Mailboxes)
+                        {
+                            list.Add(new MessageInfoBindingModel
+                            {
+                                DateDelivery = message.Date.DateTime,
+                                MessageId = message.MessageId,
+                                SenderName = mail.Address,
+                                Subject = message.Subject,
+                                Body = message.TextBody,
+                            });
+                        }
+                    }
+                }
+                catch (AuthenticationException)
+                { }
+                finally
+                {
+                    client.Disconnect(true);
+                }
+            });
+            return list;
+        }
+    }
+}

ComputersShop/ComputersShopClientApp/APIClient.cs

@@ -9,6 +9,8 @@ namespace ComputersShopClientApp
 	{
 		private static readonly HttpClient _client = new();
 
+        public static int MailPage { get; set; } = 1;
+
         public static ClientViewModel? Client { get; set; } = null;
 
 		public static void Connect(IConfiguration configuration)

ComputersShop/ComputersShopClientApp/Controllers/HomeController.cs

@@ -39,7 +39,7 @@ namespace ComputersShopClientApp.Controllers
         {
             if (APIClient.Client == null)
             {
-                throw new Exception("ЭЭЭЭ ЖИ ЕСТЬ! ТЫ КАК СУДА ПОПАЛ? ВХОД ТОЛЬКО НАШИНСКИМ!");
+                throw new Exception("Вы как суда попали? Суда вход только авторизованным");
             }
             if (string.IsNullOrEmpty(login) || string.IsNullOrEmpty(password) || string.IsNullOrEmpty(fio))
             {
@@ -121,7 +121,7 @@ namespace ComputersShopClientApp.Controllers
         {
             if (APIClient.Client == null)
             {
-                throw new Exception("ЭЭЭЭ ЖИ ЕСТЬ! ТЫ КАК СУДА ПОПАЛ? ВХОД ТОЛЬКО НАШИНСКИМ!!!!");
+                throw new Exception("Вы как суда попали? Суда вход только авторизованным");
             }
             if (count <= 0)
             {
@@ -143,5 +143,15 @@ namespace ComputersShopClientApp.Controllers
             var prod = APIClient.GetRequest<ComputerViewModel>($"api/main/getcomputer?computerId={computer}");
             return count * (prod?.Price ?? 1);
         }
+
+        [HttpGet]
+        public IActionResult Mails()
+        {
+            if (APIClient.Client == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.GetRequest<List<MessageInfoViewModel>>($"api/client/getmessages?clientId={APIClient.Client.Id}"));
+        }
     }
 }

ComputersShop/ComputersShopClientApp/Views/Home/Mails.cshtml

@@ -0,0 +1,53 @@
+@using ComputersShopContracts.ViewModels;
+@model List<MessageInfoViewModel>
+
+@{
+	ViewData["Title"] = "Mails";
+}
+
+<div class="text-center">
+	<h1 class="display-4">Письма</h1>
+</div>
+
+
+<div class="text-center">
+	@{
+		if (Model == null)
+		{
+					<h3 class="display-4">Авторизируйтесь</h3>
+			return;
+		}
+
+			<table class="table">
+				<thead>
+					<tr>
+						<th>
+							Дата письма
+						</th>
+						<th>
+							Заголовок
+						</th>
+						<th>
+							Текст
+						</th>
+					</tr>
+				</thead>
+				<tbody>
+				@foreach (var item in Model)
+				{
+							<tr>
+								<td>
+							@Html.DisplayFor(modelItem => item.DateDelivery)
+								</td>
+								<td>
+							@Html.DisplayFor(modelItem => item.Subject)
+								</td>
+								<td>
+							@Html.DisplayFor(modelItem => item.Body)
+								</td>
+							</tr>
+				}
+				</tbody>
+			</table>
+	}
+</div>

ComputersShop/ComputersShopClientApp/Views/Shared/_Layout.cshtml

@@ -20,16 +20,19 @@
                 <div class="navbar-collapse collapse d-sm-inline-flex flex-smrow-reverse">
                     <ul class="navbar-nav flex-grow-1">
                         <li class="nav-item">
-                            <a class="nav-link text-dark" asparea="" asp-controller="Home" asp-action="Index">Заказы</a>
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Заказы</a>
                         </li>
                         <li class="nav-item">
-                            <a class="nav-link text-dark" asparea="" asp-controller="Home" asp-action="Privacy">Личные данные</a>
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Личные данные</a>
                         </li>
                         <li class="nav-item">
-                            <a class="nav-link text-dark" asparea="" asp-controller="Home" asp-action="Enter">Вход</a>
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Mails">Письма</a>
                         </li>
                         <li class="nav-item">
-                            <a class="nav-link text-dark" asparea="" asp-controller="Home" asp-action="Register">Регистрация</a>
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Enter">Вход</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Register">Регистрация</a>
                         </li>
                     </ul>
                 </div>

ComputersShop/ComputersShopContracts/BindingModels/MailConfigBindingModel.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+    public class MailConfigBindingModel
+    {
+        public string MailLogin { get; set; } = string.Empty;
+
+        public string MailPassword { get; set; } = string.Empty;
+
+        public string SmtpClientHost { get; set; } = string.Empty;
+
+        public int SmtpClientPort { get; set; }
+
+        public string PopHost { get; set; } = string.Empty;
+
+        public int PopPort { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/BindingModels/MailSendInfoBindingModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+    public class MailSendInfoBindingModel
+    {
+        public string MailAddress { get; set; } = string.Empty;
+
+        public string Subject { get; set; } = string.Empty;
+
+        public string Text { get; set; } = string.Empty;
+    }
+}

ComputersShop/ComputersShopContracts/BindingModels/MessageInfoBindingModel.cs

@@ -0,0 +1,24 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+    public class MessageInfoBindingModel : IMessageInfoModel
+    {
+        public string MessageId { get; set; } = string.Empty;
+
+        public int? ClientId { get; set; }
+
+        public string SenderName { get; set; } = string.Empty;
+
+        public string Subject { get; set; } = string.Empty;
+
+        public string Body { get; set; } = string.Empty;
+
+        public DateTime DateDelivery { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IMessageInfoLogic.cs

@@ -0,0 +1,18 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+    public interface IMessageInfoLogic
+    {
+        List<MessageInfoViewModel>? ReadList(MessageInfoSearchModel? model);
+
+        bool Create(MessageInfoBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/SearchModels/MessageInfoSearchModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+    public class MessageInfoSearchModel
+    {
+        public int? ClientId { get; set; }
+
+        public string? MessageId { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/StorageContracts/IMessageInfoStorage.cs

@@ -0,0 +1,22 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+    public interface IMessageInfoStorage
+    {
+        List<MessageInfoViewModel> GetFullList();
+
+        List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model);
+
+        MessageInfoViewModel? GetElement(MessageInfoSearchModel model);
+
+        MessageInfoViewModel? Insert(MessageInfoBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/ViewModels/MessageInfoViewModel.cs

@@ -0,0 +1,29 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+    public class MessageInfoViewModel : IMessageInfoModel
+    {
+        public string MessageId { get; set; } = string.Empty;
+
+        public int? ClientId { get; set; }
+
+        [DisplayName("Отправитель")]
+        public string SenderName { get; set; } = string.Empty;
+
+        [DisplayName("Дата письма")]
+        public DateTime DateDelivery { get; set; }
+
+        [DisplayName("Заголовок")]
+        public string Subject { get; set; } = string.Empty;
+
+        [DisplayName("Текст")]
+        public string Body { get; set; } = string.Empty;
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/ComputersShopDataBase.cs

@@ -24,6 +24,7 @@ namespace ComputersShopDataBaseImplement
         public virtual DbSet<Order> Orders { set; get; }
         public virtual DbSet<Client> Clients { set; get; }
         public virtual DbSet<Implementer> Implementers { set; get; }
+        public virtual DbSet<Message> Messages { set; get; }
     }
 }
 

ComputersShop/ComputersShopDataBaseImplement/Implements/MessageInfoStorage.cs

@@ -0,0 +1,60 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+    public class MessageInfoStorage : IMessageInfoStorage
+    {
+        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.MessageId))
+            {
+                return null;
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Messages
+             .FirstOrDefault(x => x.MessageId == model.MessageId)?
+            .GetViewModel;
+        }
+
+        public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
+        {
+            if (!model.ClientId.HasValue)
+                return new();
+            using var context = new ComputersShopDataBase();
+            return context.Messages
+                .Where(x => x.ClientId == model.ClientId)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<MessageInfoViewModel> GetFullList()
+        {
+            using var context = new ComputersShopDataBase();
+            return context.Messages
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+
+        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var newMessage = Message.Create(model);
+            if (newMessage == null)
+            {
+                return null;
+            }
+            context.Messages.Add(newMessage);
+            context.SaveChanges();
+            return newMessage.GetViewModel;
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Implements/OrderStorage.cs

@@ -42,14 +42,30 @@ namespace ComputersShopDataBaseImplement.Implements
             }
 
             using var context = new ComputersShopDataBase();
+            if (model.ImplementerId.HasValue && model.Status.HasValue)
+            {
+                return context.Orders
+                              .Include(x => x.Computer)
+                              .Include(x => x.Client)
+                              .Include(x => x.Implementer)
+                              .FirstOrDefault(x => x.ImplementerId == model.ImplementerId && x.Status == model.Status)
+                              ?.GetViewModel;
+            }
+            if (model.ImplementerId.HasValue)
+            {
+                return context.Orders
+                              .Include(x => x.Computer)
+                              .Include(x => x.Client)
+                              .Include(x => x.Implementer)
+                              .FirstOrDefault(x => x.ImplementerId == model.ImplementerId)
+                              ?.GetViewModel;
+            }
 
             return context.Orders
                 .Include(x => x.Computer)
                 .Include(x => x.Client)
                 .Include(x => x.Implementer)
-                .FirstOrDefault(x => (model.Status == null || model.Status != null && model.Status == x.Status) &&
+                .FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id)
-                        model.ImplementerId.HasValue && x.ImplementerId == model.ImplementerId ||
-                        model.Id.HasValue && x.Id == model.Id)
                 ?.GetViewModel;
         }
 

ComputersShop/ComputersShopDataBaseImplement/Models/Message.cs

@@ -0,0 +1,55 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class Message : IMessageInfoModel
+    {
+        [Key]
+        public string MessageId { get; private set; } = string.Empty;
+
+        public int? ClientId { get; private set; }
+
+        public string SenderName { get; private set; } = string.Empty;
+
+        public DateTime DateDelivery { get; private set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+
+        public string Subject { get; private set; } = string.Empty;
+
+        public string Body { get; private set; } = string.Empty;
+
+        public static Message? Create(MessageInfoBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Body = model.Body,
+                Subject = model.Subject,
+                ClientId = model.ClientId,
+                MessageId = model.MessageId,
+                SenderName = model.SenderName,
+                DateDelivery = DateTime.SpecifyKind(model.DateDelivery, DateTimeKind.Utc)
+			};
+        }
+
+        public MessageInfoViewModel GetViewModel => new()
+        {
+            Body = Body,
+            Subject = Subject,
+            ClientId = ClientId,
+            MessageId = MessageId,
+            SenderName = SenderName,
+            DateDelivery = DateDelivery,
+        };
+    }
+}

ComputersShop/ComputersShopFileImplement/DataFileSingleton.cs

@@ -16,12 +16,14 @@ namespace ComputersShopFileImplement
         private readonly string ComputerFileName = "Computer.xml";
         private readonly string ClientFileName = "Client.xml";
         private readonly string ImplementerFileName = "Implementer.xml";
+        private readonly string MessageFileName = "Message.xml";
 
         public List<Component> Components { get; private set; }
         public List<Order> Orders { get; private set; }
         public List<Computer> Computers { get; private set; }
         public List<Client> Clients { get; private set; }
         public List<Implementer> Implementers { get; private set; }
+        public List<Message> Messages { get; private set; }
 
         public static DataFileSingleton GetInstance()
         {
@@ -36,6 +38,7 @@ namespace ComputersShopFileImplement
         public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
         public void SaveClients() => SaveData(Clients, OrderFileName, "Clients", x => x.GetXElement);
         public void SaveImplementers() => SaveData(Implementers, ImplementerFileName, "Implementers", x => x.GetXElement);
+        public void SaveMessages() => SaveData(Messages, MessageFileName, "Messages", x => x.GetXElement);
 
         private DataFileSingleton()
         {
@@ -44,6 +47,7 @@ namespace ComputersShopFileImplement
             Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
             Clients = LoadData(ClientFileName, "Client", x => Client.Create(x)!)!;
             Implementers = LoadData(ImplementerFileName, "Implementer", x => Implementer.Create(x)!)!;
+            Messages = LoadData(MessageFileName, "Message", x => Message.Create(x));
         }
         private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
         {

ComputersShop/ComputersShopFileImplement/Implements/MessageInfoStorage.cs

@@ -0,0 +1,58 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+	public class MessageInfoStorage : IMessageInfoStorage
+	{
+		private readonly DataFileSingleton _source;
+		public MessageInfoStorage()
+		{
+			_source = DataFileSingleton.GetInstance();
+		}
+
+		public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
+		{
+			if (model.MessageId != null)
+			{
+				return _source.Messages.FirstOrDefault(x => x.MessageId == model.MessageId)?.GetViewModel;
+			}
+			return null;
+		}
+
+		public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
+		{
+			return _source.Messages
+				.Where(x => x.ClientId == model.ClientId)
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public List<MessageInfoViewModel> GetFullList()
+		{
+			return _source.Messages
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
+		{
+			var newMessage = Message.Create(model);
+			if (newMessage == null)
+			{
+				return null;
+			}
+			_source.Messages.Add(newMessage);
+			_source.SaveMessages();
+			return newMessage.GetViewModel;
+		}
+	}
+}

ComputersShop/ComputersShopFileImplement/Models/Message.cs

@@ -0,0 +1,80 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+	public class Message : IMessageInfoModel
+	{
+		public string MessageId { get; private set; } = string.Empty;
+
+		public int? ClientId { get; private set; }
+
+		public string SenderName { get; private set; } = string.Empty;
+
+		public DateTime DateDelivery { get; private set; } = DateTime.Now;
+
+		public string Subject { get; private set; } = string.Empty;
+
+		public string Body { get; private set; } = string.Empty;
+
+		public static Message? Create(MessageInfoBindingModel model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new()
+			{
+				Body = model.Body,
+				Subject = model.Subject,
+				ClientId = model.ClientId,
+				MessageId = model.MessageId,
+				SenderName = model.SenderName,
+				DateDelivery = model.DateDelivery,
+			};
+		}
+
+		public static Message? Create(XElement element)
+		{
+			if (element == null)
+			{
+				return null;
+			}
+			return new()
+			{
+				Body = element.Attribute("Body")!.Value,
+				Subject = element.Attribute("Subject")!.Value,
+				ClientId = Convert.ToInt32(element.Attribute("ClientId")!.Value),
+				MessageId = element.Attribute("MessageId")!.Value,
+				SenderName = element.Attribute("SenderName")!.Value,
+				DateDelivery = Convert.ToDateTime(element.Attribute("DateDelivery")!.Value),
+			};
+		}
+
+		public MessageInfoViewModel GetViewModel => new()
+		{
+			Body = Body,
+			Subject = Subject,
+			ClientId = ClientId,
+			MessageId = MessageId,
+			SenderName = SenderName,
+			DateDelivery = DateDelivery,
+		};
+
+		public XElement GetXElement => new("MessageInfo",
+			new XAttribute("Body", Body),
+			new XAttribute("Subject", Subject),
+			new XAttribute("ClientId", ClientId),
+			new XAttribute("MessageId", MessageId),
+			new XAttribute("SenderName", SenderName),
+			new XAttribute("DateDelivery", DateDelivery)
+			);
+	}
+}

ComputersShop/ComputersShopListImplement/DataListSingleton.cs

@@ -15,6 +15,7 @@ namespace ComputersShopListImplement
         public List<Computer> Computers { get; set; }
         public List<Client> Clients { get; set; }
         public List<Implementer> Implementers { get; set; }
+        public List<Message> Messages { get; set; }
         private DataListSingleton()
         {
             Components = new List<Component>();
@@ -22,6 +23,7 @@ namespace ComputersShopListImplement
             Computers = new List<Computer>();
             Clients = new List<Client>();
             Implementers = new List<Implementer>();
+            Messages = new List<Message>();
         }
         public static DataListSingleton GetInstance()
         {

ComputersShop/ComputersShopListImplement/Implements/MessageInfoStorage.cs

@@ -0,0 +1,66 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Implements
+{
+	public class MessageInfoStorage : IMessageInfoStorage
+	{
+		private readonly DataListSingleton _source;
+		public MessageInfoStorage()
+		{
+			_source = DataListSingleton.GetInstance();
+		}
+
+		public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
+		{
+			foreach (var message in _source.Messages)
+			{
+				if (model.MessageId != null && model.MessageId.Equals(message.MessageId))
+					return message.GetViewModel;
+			}
+			return null;
+		}
+
+		public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
+		{
+			List<MessageInfoViewModel> result = new();
+			foreach (var item in _source.Messages)
+			{
+				if (item.ClientId.HasValue && item.ClientId == model.ClientId)
+				{
+					result.Add(item.GetViewModel);
+				}
+			}
+			return result;
+		}
+
+		public List<MessageInfoViewModel> GetFullList()
+		{
+			List<MessageInfoViewModel> result = new();
+			foreach (var item in _source.Messages)
+			{
+				result.Add(item.GetViewModel);
+			}
+			return result;
+		}
+
+		public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
+		{
+			var newMessage = Message.Create(model);
+			if (newMessage == null)
+			{
+				return null;
+			}
+			_source.Messages.Add(newMessage);
+			return newMessage.GetViewModel;
+		}
+	}
+}

ComputersShop/ComputersShopListImplement/Models/Message.cs

@@ -0,0 +1,53 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+	public class Message : IMessageInfoModel
+	{
+		public string MessageId { get; private set; } = string.Empty;
+
+		public int? ClientId { get; private set; }
+
+		public string SenderName { get; private set; } = string.Empty;
+
+		public DateTime DateDelivery { get; private set; } = DateTime.Now;
+
+		public string Subject { get; private set; } = string.Empty;
+
+		public string Body { get; private set; } = string.Empty;
+
+		public static Message? Create(MessageInfoBindingModel model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new()
+			{
+				Body = model.Body,
+				Subject = model.Subject,
+				ClientId = model.ClientId,
+				MessageId = model.MessageId,
+				SenderName = model.SenderName,
+				DateDelivery = model.DateDelivery,
+			};
+		}
+
+		public MessageInfoViewModel GetViewModel => new()
+		{
+			Body = Body,
+			Subject = Subject,
+			ClientId = ClientId,
+			MessageId = MessageId,
+			SenderName = SenderName,
+			DateDelivery = DateDelivery,
+		};
+	}
+}

ComputersShop/ComputersShopRestAPI/appsettings.json

@@ -5,5 +5,12 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+
+  "SmtpClientHost": "smtp.gmail.com",
+  "SmtpClientPort": "587",
+  "PopHost": "pop.gmail.com",
+  "PopPort": "995",
+  "MailLogin": "rpplabs24@gmail.com",
+  "MailPassword": "qqwezxc2024"
 }

ComputersShop/ComputersShopView/App.config

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <appSettings>
+    <add key="SmtpClientHost" value="smtp.gmail.com" />
+    <add key="SmtpClientPort" value="587" />
+    <add key="PopHost" value="pop.gmail.com" />
+    <add key="PopPort" value="995" />
+    <add key="MailLogin" value="rpplabs24@gmail.com" />
+    <add key="MailPassword" value="qqwezxc2024" />
+  </appSettings>
+</configuration>

ComputersShop/ComputersShopView/FormMails.Designer.cs

@@ -0,0 +1,65 @@
+namespace ComputersShopView
+{
+	partial class FormMails
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			dataGridView = new DataGridView();
+			((System.ComponentModel.ISupportInitialize)dataGridView).BeginInit();
+			SuspendLayout();
+			// 
+			// dataGridView
+			// 
+			dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+			dataGridView.Dock = DockStyle.Fill;
+			dataGridView.Location = new Point(0, 0);
+			dataGridView.Margin = new Padding(3, 2, 3, 2);
+			dataGridView.Name = "dataGridView";
+			dataGridView.RowHeadersWidth = 51;
+			dataGridView.RowTemplate.Height = 29;
+			dataGridView.Size = new Size(947, 576);
+			dataGridView.TabIndex = 0;
+			// 
+			// FormMails
+			// 
+			AutoScaleDimensions = new SizeF(7F, 15F);
+			AutoScaleMode = AutoScaleMode.Font;
+			ClientSize = new Size(947, 576);
+			Controls.Add(dataGridView);
+			Margin = new Padding(3, 2, 3, 2);
+			Name = "FormMails";
+			Text = "Письма";
+			Load += FormMails_Load;
+			((System.ComponentModel.ISupportInitialize)dataGridView).EndInit();
+			ResumeLayout(false);
+		}
+
+		#endregion
+
+		private DataGridView dataGridView;
+	}
+}

ComputersShop/ComputersShopView/FormMails.cs

@@ -0,0 +1,49 @@
+using ComputersShopContracts.BusinessLogicContracts;
+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 ComputersShopView
+{
+	public partial class FormMails : Form
+	{
+		private readonly ILogger _logger;
+		private readonly IMessageInfoLogic _logic;
+
+		public FormMails(ILogger<FormMails> logger, IMessageInfoLogic logic)
+		{
+			InitializeComponent();
+			_logger = logger;
+			_logic = logic;
+		}
+
+		private void FormMails_Load(object sender, EventArgs e)
+		{
+			try
+			{
+				var list = _logic.ReadList(null);
+				if (list != null)
+				{
+					dataGridView.DataSource = list;
+					dataGridView.Columns["ClientId"].Visible = false;
+					dataGridView.Columns["MessageId"].Visible = false;
+					dataGridView.Columns["Body"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+				}
+				_logger.LogInformation("Загрузка писем");
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка загрузки писем");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+				MessageBoxIcon.Error);
+			}
+		}
+	}
+}

ComputersShop/ComputersShopView/FormMails.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ComputersShop/ComputersShopView/Program.cs

@@ -7,6 +7,8 @@ using ComputersShopDataBaseImplement.Implements;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using NLog.Extensions.Logging;
+using ComputersShopBusinessLogic.MailWorker;
+using ComputersShopContracts.BindingModels;
 
 namespace ComputersShopView
 {
@@ -26,6 +28,26 @@ namespace ComputersShopView
             var services = new ServiceCollection();
             ConfigureServices(services);
             _serviceProvider = services.BuildServiceProvider();
+            try
+            {
+                var mailSender = _serviceProvider.GetService<AbstractMailWorker>();
+                mailSender?.MailConfig(new MailConfigBindingModel
+                {
+                    MailLogin = System.Configuration.ConfigurationManager.AppSettings["MailLogin"] ?? string.Empty,
+                    MailPassword = System.Configuration.ConfigurationManager.AppSettings["MailPassword"] ?? string.Empty,
+                    SmtpClientHost = System.Configuration.ConfigurationManager.AppSettings["SmtpClientHost"] ?? string.Empty,
+                    SmtpClientPort = Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["SmtpClientPort"]),
+                    PopHost = System.Configuration.ConfigurationManager.AppSettings["PopHost"] ?? string.Empty,
+                    PopPort = Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["PopPort"])
+                });
+
+                var timer = new System.Threading.Timer(new TimerCallback(MailCheck!), null, 0, 100000);
+            }
+            catch (Exception ex)
+            {
+                var logger = _serviceProvider.GetService<ILogger>();
+                logger?.LogError(ex, "Error");
+            }
             Application.Run(_serviceProvider.GetRequiredService<FormMain>());
         }
 
@@ -41,6 +63,7 @@ namespace ComputersShopView
             services.AddTransient<IOrderStorage, OrderStorage>();
             services.AddTransient<IClientStorage, ClientStorage>();
             services.AddTransient<IImplementerStorage, ImplementerStorage>();
+            services.AddTransient<IMessageInfoStorage, MessageInfoStorage>();
 
             services.AddTransient<IComponentLogic, ComponentLogic>();
             services.AddTransient<IComputerLogic, ComputerLogic>();
@@ -49,10 +72,12 @@ namespace ComputersShopView
             services.AddTransient<IClientLogic, ClientLogic>();
             services.AddTransient<IImplementerLogic, ImplementerLogic>();
             services.AddTransient<IWorkProcess, WorkModeling>();
+            services.AddTransient<IMessageInfoLogic, MessageInfoLogic>();
 
             services.AddTransient<AbstractSaveToWord, SaveToWord>();
             services.AddTransient<AbstractSaveToExcel, SaveToExcel>();
             services.AddTransient<AbstractSaveToPdf, SaveToPdf>();
+            services.AddSingleton<AbstractMailWorker, MailKitWorker>();
 
             services.AddTransient<FormMain>();
             services.AddTransient<FormClients>();
@@ -66,6 +91,8 @@ namespace ComputersShopView
             services.AddTransient<FormReportOrders>();
             services.AddTransient<FormImplementer>();
             services.AddTransient<FormImplementers>();
+            services.AddTransient<FormMails>();
         }
+        private static void MailCheck(object obj) => ServiceProvider?.GetService<AbstractMailWorker>()?.MailCheck();
     }
 }

ComputersShop/СomputersShopDataModels/Models/IMessageInfoModel.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+    public interface IMessageInfoModel
+    {
+        string MessageId { get; }
+
+        int? ClientId { get; }
+
+        string SenderName { get; }
+
+        DateTime DateDelivery { get; }
+
+        string Subject { get; }
+
+        string Body { get; }
+    }
+}