Stage 7: BussinessLogic (AbstractMailWorker, MailKitWorker реализована логика работы с эл. почтой), Contracts(MailSend, MailConfig, MessageIngo BindingModels модели для работы с отправкой пиьем на электронную почту), DataModels(IMessageInfoModel)

P.S. Начинаем работать немного с электронной почтой :)

Bank/BankBusinessLogic/BankBusinessLogic.csproj

@@ -8,6 +8,7 @@
 
   <ItemGroup>
 	<PackageReference Include="DocumentFormat.OpenXml" Version="2.19.0" />
+	<PackageReference Include="MailKit" Version="4.5.0" />
 	<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.18">
 	  <PrivateAssets>all</PrivateAssets>
 	  <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

Bank/BankBusinessLogic/MailWorker/AbstractMailWorker.cs

@@ -0,0 +1,70 @@
+using BankContracts.BindingModels.Messages;
+using BankContracts.BusinessLogicsContracts.Client;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BankBusinessLogic.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 IClientLogic _clientLogic;
+        private readonly ILogger _logger;
+
+        // Конструктор
+        public AbstractMailWorker(ILogger<AbstractMailWorker> logger, IClientLogic clientLogic)
+        {
+            _logger = logger;
+            _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);
+        }
+
+        protected abstract Task SendMailAsync(MailSendInfoBindingModel info);
+    }
+}

Bank/BankBusinessLogic/MailWorker/MailKitWorker.cs

@@ -0,0 +1,106 @@
+using BankContracts.BindingModels.Messages;
+using BankDataModels.Enums;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Mail;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BankBusinessLogic.MailWorker
+{
+    // Класс, отвечающий за отправку письма на почту
+    public class MailKitWorker
+    {
+        private string _mailLogin = string.Empty;
+
+        private string _mailPassword = string.Empty;
+
+        private string _smtpClientHost = string.Empty;
+
+        private int _smtpClientPort;
+
+        private readonly ILogger logger;
+
+        // Конструктор
+        public MailKitWorker(ILogger<MailKitWorker> logger)
+        {
+            this.logger = logger;
+        }
+
+        public void MailConfig(MailConfigBindingModel model)
+        {
+            _mailLogin = model.MailLogin;
+            _mailPassword = model.MailPassword;
+            _smtpClientHost= model.SmtpClientHost;
+            _smtpClientPort = model.SmtpClientPort;
+        }
+
+        public async void 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;
+
+                MemoryStream memory = new(info.File);
+
+                if (info.Role == MailsEnum.Клиент)
+                {
+                    if (info.TypeDoc == TypeDocEnum.PDF)
+                    {
+                        objMailMessage.Attachments.Add(new Attachment(memory, "Отчёт_для_клиента.pdf", "application/pdf"));
+                    }
+
+                    if (info.TypeDoc == TypeDocEnum.EXCEL)
+                    {
+                        objMailMessage.Attachments.Add(new Attachment(memory, "Отчёт_для_клиента.xlsx", "application/xlsx"));
+                    }
+
+                    if (info.TypeDoc == TypeDocEnum.WORD)
+                    {
+                        objMailMessage.Attachments.Add(new Attachment(memory, "Отчёт_для_клиента.docx", "application/docx"));
+                    }
+                }
+                else
+                {
+                    if (info.TypeDoc == TypeDocEnum.PDF)
+                    {
+                        objMailMessage.Attachments.Add(new Attachment(memory, "Отчёт_для_кассира.pdf", "application/pdf"));
+                    }
+
+                    if (info.TypeDoc == TypeDocEnum.EXCEL)
+                    {
+                        objMailMessage.Attachments.Add(new Attachment(memory, "Отчёт_для_кассира.xlsx", "application/xlsx"));
+                    }
+
+                    if (info.TypeDoc == TypeDocEnum.WORD)
+                    {
+                        objMailMessage.Attachments.Add(new Attachment(memory, "Отчёт_для_кассира.docx", "application/docx"));
+                    }
+                }
+
+                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;
+            }
+        }
+
+    }
+}

Bank/BankContracts/BindingModels/Messages/MailConfigBindingModel.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BankContracts.BindingModels.Messages
+{
+    // Класс для передачи данных по почте
+    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; }
+    }
+}

Bank/BankContracts/BindingModels/Messages/MailSendInfoBindingModel.cs

@@ -0,0 +1,26 @@
+using BankDataModels.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BankContracts.BindingModels.Messages
+{
+    // Класс для обмена информацией по почте
+    public class MailSendInfoBindingModel
+    {
+        public string MailAddress { get; set; } = string.Empty;
+
+        public string Subject { get; set; } = string.Empty;
+
+        public string Text { get; set; } = string.Empty;
+
+        // Для отправки pdf
+        public byte[] File { get; set; } = Array.Empty<byte>();
+
+        public MailsEnum Role { get; set; }
+
+        public TypeDocEnum TypeDoc { get; set; }
+    }
+}

Bank/BankContracts/BindingModels/Messages/MessageInfoBindingModel.cs

@@ -0,0 +1,32 @@
+using BankDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BankContracts.BindingModels.Messages
+{
+    // Реализация сущности "Сообщение"
+    public class MessageInfoBindingModel : IMessageInfoModel
+    {
+        public int Id { get; set; }
+
+        public string MessageId { get; set; } = string.Empty;
+
+        public int? ClientId { get; set; }
+
+        public string SenderName { get; set; } = string.Empty;
+
+        public DateTime DateDelivery { get; set; } = DateTime.Now;
+
+        public string Subject { get; set; } = string.Empty;
+
+        public string Body { get; set; } = string.Empty;
+
+        // Для ответа
+        public bool IsRead { get; set; } = false;
+
+        public string? Answer { get; set; } = string.Empty;
+    }
+}

Bank/BankDataModels/Models/IMessageInfoModel.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BankDataModels.Models
+{
+    // Интерфейс, отвечающий за сообщения (на почту)
+    public interface IMessageInfoModel : IId
+    {
+        string MessageId { get; }
+
+        int? ClientId { get; }
+
+        string SenderName { get; }
+
+        DateTime DateDelivery { get; }
+
+        string Subject { get; }
+
+        string Body { get; }
+
+        public bool IsRead { get; }
+
+        public string Answer { get; }
+    }
+}