BusinessLogic/BusinessLogic/UserLogic.cs

@@ -1,4 +1,6 @@
 using BusinessLogic.Tools;
+using BusinessLogic.Tools.Mail;
+using BusinessLogic.Tools.Mail.MailTemplates;
 using Contracts.BindingModels;
 using Contracts.BusinessLogicContracts;
 using Contracts.Converters;
@@ -39,6 +41,8 @@ namespace BusinessLogic.BusinessLogic
 				throw new Exception("Insert operation failed.");
 			}
 
+			MailSender.Send(new MailRegistration(user));
+
 			return UserConverter.ToView(user);
 		}
 
@@ -52,6 +56,7 @@ namespace BusinessLogic.BusinessLogic
 			{
 				throw new ElementNotFoundException();
 			}
+			MailSender.Send(new MailDeleteUser(user));
 
 			return UserConverter.ToView(user);
 		}
@@ -99,6 +104,9 @@ namespace BusinessLogic.BusinessLogic
 			{
 				throw new Exception("Update operation failed.");
 			}
+
+			MailSender.Send(new MailUpdateUserData(user));
+
 			return UserConverter.ToView(user);
 		}
 

BusinessLogic/Tools/Mail/Mail.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools.Mail
+{
+	public class Mail
+	{
+		public IEnumerable<string> To { get; set; } = null!;
+		public string Title { get; set; } = null!;
+		public string Body { get; set; } = null!;
+	}
+}

BusinessLogic/Tools/Mail/MailOptions.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools.Mail
+{
+	public class MailOptions
+	{
+		public string Email { get; set; } = null!;
+		public string Password { get; set; } = null!;
+		public string SmtpClientHost { get; set; } = null!;
+		public short SmtpClientPort { get; set; }
+	}
+}

BusinessLogic/Tools/Mail/MailSender.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Mail;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools.Mail
+{
+	public class MailSender
+	{
+		private static string _email;
+		private static string _password;
+		private static string _smtpClientHost;
+		private static short _smtpClientPort;
+
+		public void SetupMailOptions(MailOptions options)
+		{
+			_email = options.Email;
+			_password = options.Password;
+			_smtpClientHost = options.SmtpClientHost;
+			_smtpClientPort = options.SmtpClientPort;
+		}
+
+		public static void Send(Mail mail)
+		{
+			using SmtpClient client = new SmtpClient(_smtpClientHost, _smtpClientPort);
+			client.Credentials = new NetworkCredential(_email, _password);
+			client.EnableSsl = true;
+
+			using MailMessage message = new MailMessage();
+
+			message.From = new MailAddress(_email);
+			foreach (string to in mail.To)
+			{
+				message.To.Add(to);
+			}
+
+			message.Subject = mail.Title;
+			message.Body = mail.Body;
+
+			client.Send(message);
+		}
+	}
+}

BusinessLogic/Tools/Mail/MailTemplates/MailDeleteUser.cs

@@ -0,0 +1,20 @@
+using Contracts.BindingModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools.Mail.MailTemplates
+{
+	public class MailDeleteUser : Mail
+	{
+		public MailDeleteUser(UserBindingModel user)
+		{
+			To = [user.Email];
+			Title = "Ваш аккаунт был удален!";
+			Body = $"Уважаемый {user.SecondName} {user.FirstName}, Ваш аккаунт был удален навсегда насовсем.\n" +
+				$"Если это были не Вы... Тут уже ничего не поможет, приносим наши извинения.";
+		}
+	}
+}

BusinessLogic/Tools/Mail/MailTemplates/MailRegistration.cs

@@ -0,0 +1,21 @@
+using Contracts.BindingModels;
+using Contracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools.Mail.MailTemplates
+{
+	public class MailRegistration : Mail
+	{
+		public MailRegistration(UserBindingModel user)
+		{
+			To = [user.Email];
+			Title = "Приветствуем Вас на нашем сайте!";
+			Body = $"Спасибо, {user.SecondName} {user.FirstName}, что выбрали НАС.\n" +
+				$"Надеемся, что Вам что-то уже приглянулось!";
+		}
+	}
+}

BusinessLogic/Tools/Mail/MailTemplates/MailUpdateUserData.cs

@@ -0,0 +1,20 @@
+using Contracts.BindingModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools.Mail.MailTemplates
+{
+	public class MailUpdateUserData : Mail
+	{
+		public MailUpdateUserData(UserBindingModel user)
+		{
+			To = [user.Email];
+			Title = "Данные пользователя были обновлены!";
+			Body = $"Уважаемый {user.SecondName} {user.FirstName}, Ваши данные были обвновлены.\n" +
+				$"Если это были не Вы, то что поделать, Вам придется менять пароль.";
+		}
+	}
+}

RestAPI/Controllers/UserController.cs

@@ -56,13 +56,11 @@ namespace RestAPI.Controllers
 			catch (AccountException ex)
 			{
 				_logger.LogWarning(ex, "Wrong registration data");
-				throw;
 				return Results.BadRequest(ex.Message);
 			}
 			catch (Exception ex)
 			{
 				_logger.LogError(ex, "Error create user");
-				throw;
 				return Results.Problem(ex.Message);
 			}
 		}

RestAPI/Program.cs

@@ -49,6 +49,13 @@ jwtProvider?.SetupJwtOptions(new()
 	SecretKey = getSection("JwtOptions:SecretKey") ?? string.Empty,
 	ExpiresHours = Convert.ToInt16(getSection("JwtOptions:ExpiresHours"))
 });
+mailSender?.SetupMailOptions(new()
+{
+	Email = getSection("MailOptions:Email") ?? string.Empty,
+	Password = getSection("MailOptions:Password") ?? string.Empty,
+	SmtpClientHost = getSection("MailOptions:SmtpClientHost") ?? string.Empty,
+	SmtpClientPort = Convert.ToInt16(getSection("MailOptions:SmtpClientPort"))
+});
 
 #endregion Setup config
 

RestAPI/appsettings.json

@@ -9,5 +9,11 @@
     "SecretKey": "secretkey_secretkey_secretkey_secretkey",
     "ExpiresHours": 24
   },
+  "MailOptions": {
+    "Email": "21.guns.site@gmail.com",
+    "Password": "tiss lpgf nhap qnfc",
+    "SmtpClientHost": "smtp.gmail.com",
+    "SmtpClientPort": "587"
+  },
   "AllowedHosts": "*"
 }