first commit

MyNewProjectName.WebAPI/Program.cs

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+using Microsoft.Extensions.Hosting;
+using MyNewProjectName.Application;
+using MyNewProjectName.Infrastructure;
+using MyNewProjectName.Infrastructure.Extensions;
+using MyNewProjectName.WebAPI.Middleware;
+using Serilog;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Configure Serilog
+builder.Host.UseSerilogLogging(builder.Configuration);
+
+// Add OpenTelemetry distributed tracing
+builder.Services.AddOpenTelemetryTracing("MyNewProjectName.WebAPI");
+
+// Add services to the container.
+builder.Services.AddControllers();
+
+// Add Application Layer
+builder.Services.AddApplication();
+
+// Add Infrastructure Layer
+builder.Services.AddInfrastructure(builder.Configuration);
+
+// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddOpenApi();
+
+// Add Swagger
+builder.Services.AddEndpointsApiExplorer();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.MapOpenApi();
+}
+
+// Middleware pipeline order is critical:
+// 1. CorrelationIdMiddleware - Must be first to track all requests
+app.UseMiddleware<CorrelationIdMiddleware>();
+
+// 2. RequestResponseLoggingMiddleware - Optional, enable only when needed
+// WARNING: This can generate large log files. Enable only for specific environments.
+// Configure in appsettings.json: "Logging:EnableRequestLogging" and "Logging:EnableResponseLogging"
+app.UseMiddleware<RequestResponseLoggingMiddleware>();
+
+app.UseHttpsRedirection();
+
+// 3. Authentication (built-in)
+app.UseAuthentication();
+
+// 4. Authorization (built-in)
+app.UseAuthorization();
+
+// 6. ExceptionHandlingMiddleware - Must be last to catch all exceptions
+app.UseMiddleware<ExceptionHandlingMiddleware>();
+
+app.MapControllers();
+
+try
+{
+    Log.Information("Starting MyNewProjectName.WebAPI");
+    app.Run();
+}
+catch (Exception ex)
+{
+    Log.Fatal(ex, "Application terminated unexpectedly");
+    throw;
+}
+finally
+{
+    Log.CloseAndFlush();
+}
+