Add JwtService

AMessanger.API/Program.cs

@@ -1,3 +1,4 @@
+using AMessanger.Application;
 using AMessanger.Application.Hubs;
 
 var builder = WebApplication.CreateBuilder(args);
@@ -12,6 +13,8 @@ builder.Services.AddSwaggerGen();
 
 builder.Services.AddSignalR();
 
+builder.Services.AddAuth(builder.Configuration);
+
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.

AMessanger.Application/AMessanger.Application.csproj

@@ -11,6 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR" />
   </ItemGroup>
 

AMessanger.Application/ApplicationExtensions.cs

@@ -0,0 +1,38 @@
+using System.Text;
+using AMessanger.Application.Settings;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.IdentityModel.Tokens;
+
+namespace AMessanger.Application;
+
+public static class ApplicationExtensions
+{
+    public static IServiceCollection AddAuth(this IServiceCollection services, IConfiguration configuration)
+    {
+        var jwtConf = configuration.GetSection(JwtSettings.SECTION_NAME);
+        services.Configure<JwtSettings>(jwtConf);
+        var settings = jwtConf.Get<JwtSettings>()!;
+
+        services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
+            .AddJwtBearer(options =>
+            {
+                options.TokenValidationParameters = new TokenValidationParameters
+                {
+                    ValidateIssuer = true,
+                    ValidateAudience = true,
+                    ValidateLifetime = true,
+                    ValidateIssuerSigningKey = true,
+
+                    ValidIssuer = settings.Issuer,
+                    ValidAudience = settings.Audience,
+                    IssuerSigningKey = new SymmetricSecurityKey(
+                        Encoding.UTF8.GetBytes(settings.Key)
+                    )
+                };
+            });
+
+        return services.AddAuthorization();
+    }
+}

AMessanger.Application/Services/JwtService.cs

@@ -0,0 +1,38 @@
+using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Text;
+using AMessanger.Application.Settings;
+using AMessanger.Core.Abstraction;
+using AMessanger.Core.Models;
+using Microsoft.Extensions.Options;
+using Microsoft.IdentityModel.Tokens;
+
+namespace AMessanger.Application.Services;
+
+public class JwtService(IOptions<JwtSettings> options) : IJwtService
+{
+    private readonly JwtSettings _settings = options.Value;
+
+    public string GenerateToken(User user)
+    {
+        var claims = new[]
+        {
+            new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
+            new Claim(ClaimTypes.Name, user.Name)
+        };
+
+        var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_settings.Key));
+
+        var creditnails = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
+
+        var token = new JwtSecurityToken(
+            issuer: _settings.Issuer,
+            audience: _settings.Audience,
+            claims: claims,
+            expires: DateTime.UtcNow.AddMinutes(_settings.ExpiresMinutes),
+            signingCredentials: creditnails
+        );
+
+        return new JwtSecurityTokenHandler().WriteToken(token);
+    }
+}

AMessanger.Application/Settings/JwtSettings.cs

@@ -0,0 +1,11 @@
+namespace AMessanger.Application.Settings;
+
+public class JwtSettings
+{
+    public const string SECTION_NAME = "Jwt";
+
+    public string Issuer { get; set; } = null!;
+    public string Audience { get; set; } = null!;
+    public int ExpiresMinutes { get; set; }
+    public string Key { get; set; } = null!;
+}

AMessanger.Core/Abstraction/IJwtService.cs

@@ -0,0 +1,8 @@
+using AMessanger.Core.Models;
+
+namespace AMessanger.Core.Abstraction;
+
+public interface IJwtService
+{
+    public string GenerateToken(User user);
+}

AMessanger.Core/Models/User.cs

@@ -0,0 +1,8 @@
+namespace AMessanger.Core.Models;
+
+public class User(Guid id, string name, string hashedPassword)
+{
+    public Guid Id { get; private set; } = id;
+    public string Name { get; set; } = name;
+    public string HashedPassword { get; set; } = hashedPassword;
+}

Directory.Packages.props

@@ -3,6 +3,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
+    <PackageVersion Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.11" />
     <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="10.0.11" />
     <PackageVersion Include="Microsoft.AspNetCore.SignalR" Version="1.2.12" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.4" />