BusinessLogic/BusinessLogic.csproj

@@ -7,12 +7,13 @@
   </PropertyGroup>
 
 	<ItemGroup>
-		<Using Include="BCrypt.Net.BCrypt" Static="True"/>
+		<Using Include="BCrypt.Net.BCrypt" Static="True" />
 	</ItemGroup>
 
   <ItemGroup>
     <PackageReference Include="BCrypt.Net-Next" Version="4.0.3" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.1" />
+    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="7.6.0" />
   </ItemGroup>
 
   <ItemGroup>

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);
 		}
@@ -99,10 +104,13 @@ namespace BusinessLogic.BusinessLogic
 			{
 				throw new Exception("Update operation failed.");
 			}
+
+			MailSender.Send(new MailUpdateUserData(user));
+
 			return UserConverter.ToView(user);
 		}
 
-		public UserViewModel Login(string email, string password)
+		public string Login(string email, string password)
 		{
 			if (email is null)
 			{
@@ -120,7 +128,7 @@ namespace BusinessLogic.BusinessLogic
 			{
 				throw new AccountException("The passwords don't match.");
 			}
-			return UserConverter.ToView(user);
+			return JwtProvider.Generate(user);
 		}
 
 		public void _validatePassword(string? password)

BusinessLogic/Tools/JwtOptions.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools
+{
+	public class JwtOptions
+	{
+		public string SecretKey { get; set; } = null!;
+		public short ExpiresHours { get; set; }
+	}
+}

BusinessLogic/Tools/JwtProvider.cs

@@ -0,0 +1,46 @@
+using Contracts.BindingModels;
+using Contracts.ViewModels;
+using Microsoft.IdentityModel.Tokens;
+using System;
+using System.CodeDom.Compiler;
+using System.Collections.Generic;
+using System.IdentityModel.Tokens.Jwt;
+using System.Linq;
+using System.Security.Claims;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic.Tools
+{
+	public class JwtProvider
+	{
+		private static string _key;
+
+		private static int _expiresHours;
+
+		public static string Generate(UserBindingModel user)
+		{
+			var signingCredentials = new SigningCredentials(
+				new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_key)),
+				SecurityAlgorithms.HmacSha256);
+
+			Claim[] claims = [
+				new("userId", user.Id.ToString()),
+				new("role", user.Role.Name)
+				];
+
+			var token = new JwtSecurityToken(signingCredentials: signingCredentials,
+				expires: DateTime.UtcNow.AddHours(_expiresHours),
+				claims: claims);
+
+			var stringToken = new JwtSecurityTokenHandler().WriteToken(token);
+			return stringToken;
+		}
+
+		public void SetupJwtOptions(JwtOptions options)
+		{
+			_key = options.SecretKey;
+			_expiresHours = options.ExpiresHours;
+		}
+	}
+}

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.";
+		}
+	}
+}

Contracts/BusinessLogicContracts/IUserLogic.cs

@@ -12,7 +12,7 @@ namespace Contracts.BusinessLogicContracts
 {
 	public interface IUserLogic
 	{
-		UserViewModel Login(string email, string password);
+		string Login(string email, string password);
 
 		UserViewModel Create(UserBindingModel model);
 

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

@@ -1,9 +1,12 @@
 using BusinessLogic.BusinessLogic;
+using BusinessLogic.Tools;
+using BusinessLogic.Tools.Mail;
 using Contracts.BusinessLogicContracts;
 using Contracts.StorageContracts;
 using DatabaseImplement.Implements;
 using Microsoft.OpenApi.Models;
 using System;
+using System.Net.Mail;
 
 const string VERSION = "v1";
 const string TITLE = "21GunsRestAPI";
@@ -21,6 +24,9 @@ builder.Services.AddTransient<IUserLogic, UserLogic>();
 builder.Services.AddTransient<IRoleStorage, RoleStorage>();
 builder.Services.AddTransient<IUserStorage, UserStorage>();
 
+builder.Services.AddSingleton<JwtProvider>();
+builder.Services.AddSingleton<MailSender>();
+
 #endregion DI
 
 builder.Services.AddControllers();
@@ -32,6 +38,26 @@ builder.Services.AddSwaggerGen(c =>
 });
 
 var app = builder.Build();
+var jwtProvider = app.Services.GetService<JwtProvider>();
+var mailSender = app.Services.GetService<MailSender>();
+
+#region Setup config
+
+string? getSection(string section) => builder.Configuration?.GetSection(section)?.Value?.ToString();
+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
 
 // Configure the HTTP request pipeline.
 if (app.Environment.IsDevelopment())

RestAPI/appsettings.json

@@ -5,5 +5,15 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
+  "JwtOptions": {
+    "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": "*"
-}
+}