Add JWT authentication with AuthController and services

backend/Program.cs

@@ -1,5 +1,9 @@
+using System.Text;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.IdentityModel.Tokens;
 using RacePlannerApi.Data;
+using RacePlannerApi.Services;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -8,6 +12,29 @@ builder.Services.AddControllers();
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddOpenApi();
 
+// Configure JWT Authentication
+var jwtKey = builder.Configuration["Jwt:Key"] ?? "your-secret-key-here-minimum-32-characters-long";
+var jwtIssuer = builder.Configuration["Jwt:Issuer"] ?? "RacePlannerApi";
+var jwtAudience = builder.Configuration["Jwt:Audience"] ?? "RacePlannerClient";
+
+builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
+    .AddJwtBearer(options =>
+    {
+        options.TokenValidationParameters = new TokenValidationParameters
+        {
+            ValidateIssuer = true,
+            ValidateAudience = true,
+            ValidateLifetime = true,
+            ValidateIssuerSigningKey = true,
+            ValidIssuer = jwtIssuer,
+            ValidAudience = jwtAudience,
+            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtKey))
+        };
+    });
+
+// Register services
+builder.Services.AddScoped<JwtTokenService>();
+
 // Configure Entity Framework Core with PostgreSQL
 var connectionString = builder.Configuration.GetConnectionString("DefaultConnection")
     ?? "Host=localhost;Database=RacePlanner;Username=postgres;Password=postgres";
@@ -40,6 +67,8 @@ app.UseHttpsRedirection();
 // Apply CORS
 app.UseCors("AllowFrontend");
 
+// Authentication & Authorization
+app.UseAuthentication();
 app.UseAuthorization();
 
 app.MapControllers();