🧹refactor: modularize application startup configuration

- Refactored Program.cs to act as a thin orchestrator by moving complex startup logic into dedicated extension methods in AppConfiguration.
- Centralized configuration for OpenTelemetry, JWT authentication, Redis cache and database migrations, improving readability, maintainability and adherence to SRP.
- Database migration failures are now logged as fatal errors.

Author: alysonsz

EventFlow.Presentation/Config/AppConfiguration.cs

@@ -12,6 +12,13 @@
 using Microsoft.OpenApi.Models;
 using System.IO.Compression;
 using System.Text.Json.Serialization;
+using Microsoft.EntityFrameworkCore; 
+using Microsoft.IdentityModel.Tokens; 
+using System.Text;
+using Serilog; 
+using OpenTelemetry.Resources; 
+using OpenTelemetry.Trace;
+using OpenTelemetry.Exporter;
 
 namespace EventFlow.Presentation.Config;
 
@@ -109,9 +116,9 @@ public static IServiceCollection ConfigureSwagger(this IServiceCollection servic
 
             options.AddSecurityDefinition(securityScheme.Reference.Id, securityScheme);
             options.AddSecurityRequirement(new OpenApiSecurityRequirement
-        {
+            {
             { securityScheme, Array.Empty<string>() }
-        });
+            });
         });
 
         return services;
@@ -127,4 +134,65 @@ public static IServiceCollection AddRedisCacheConfig(this IServiceCollection ser
 
         return services;
     }
+
+    public static IServiceCollection AddOpenTelemetryConfig(this IServiceCollection services)
+    {
+        services.AddOpenTelemetry()
+            .ConfigureResource(resource => resource
+                .AddService("EventFlow.API"))
+            .WithTracing(tracing => tracing
+                .AddAspNetCoreInstrumentation()
+                .AddHttpClientInstrumentation()
+                .AddEntityFrameworkCoreInstrumentation()
+                .AddOtlpExporter(options =>
+                {
+                    options.Endpoint = new Uri("http://eventflow-jaeger:4317");
+                    options.Protocol = OtlpExportProtocol.Grpc;
+                }));
+
+        return services;
+    }
+
+    public static IServiceCollection AddJwtAuthentication(this IServiceCollection services, IConfiguration configuration)
+    {
+        services
+            .AddAuthentication("Bearer")
+            .AddJwtBearer("Bearer", options =>
+            {
+                options.TokenValidationParameters = new TokenValidationParameters
+                {
+                    ValidateIssuer = true,
+                    ValidateAudience = true,
+                    ValidateLifetime = true,
+                    ValidateIssuerSigningKey = true,
+                    ValidIssuer = configuration["Jwt:Issuer"],
+                    ValidAudience = configuration["Jwt:Audience"],
+                    IssuerSigningKey = new SymmetricSecurityKey(
+                        Encoding.UTF8.GetBytes(configuration["Jwt:Key"]!))
+                };
+            });
+
+        return services;
+    }
+
+    public static void ApplyDatabaseMigrations(this IApplicationBuilder app)
+    {
+        using (var scope = app.ApplicationServices.CreateScope())
+        {
+            var services = scope.ServiceProvider;
+            try
+            {
+                var context = services.GetRequiredService<EventFlowContext>();
+
+                if (context.Database.GetPendingMigrations().Any())
+                {
+                    context.Database.Migrate();
+                }
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Ocorreu um erro ao aplicar as migrações automáticas.");
+            }
+        }
+    }
 }

EventFlow.Presentation/Program.cs

@@ -1,10 +1,5 @@
 using EventFlow.Presentation.Config;
-using EventFlow.Infrastructure.Data;
-using Microsoft.IdentityModel.Tokens;
 using Serilog;
-using OpenTelemetry.Resources;
-using OpenTelemetry.Trace;
-using OpenTelemetry.Exporter;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -13,64 +8,19 @@
 
 AppConfiguration.ConfigureMvc(builder);
 
-builder.Services.ConfigureSwagger();
-builder.Services.AddEndpointsApiExplorer();
-builder.Services.AddSwaggerGen();
-builder.Services.AddDbContextConfig(builder.Configuration, builder.Environment.IsDevelopment());
-builder.Services.AddRedisCacheConfig();
-
-builder.Services.AddOpenTelemetry()
-    .ConfigureResource(resource => resource
-        .AddService("EventFlow.API"))
-    .WithTracing(tracing => tracing
-        .AddAspNetCoreInstrumentation()
-        .AddHttpClientInstrumentation()
-        .AddEntityFrameworkCoreInstrumentation()
-        .AddOtlpExporter(options =>
-        {
-            options.Endpoint = new Uri("http://eventflow-jaeger:4317");
-            options.Protocol = OtlpExportProtocol.Grpc;
-        }));
-
-builder.Services.AddDependencyInjectionConfig();
-
 builder.Services
-    .AddAuthentication("Bearer")
-    .AddJwtBearer("Bearer", options =>
-    {
-        options.TokenValidationParameters = new TokenValidationParameters
-        {
-            ValidateIssuer = true,
-            ValidateAudience = true,
-            ValidateLifetime = true,
-            ValidateIssuerSigningKey = true,
-            ValidIssuer = builder.Configuration["Jwt:Issuer"],
-            ValidAudience = builder.Configuration["Jwt:Audience"],
-            IssuerSigningKey = new SymmetricSecurityKey(
-                System.Text.Encoding.UTF8.GetBytes(builder.Configuration["Jwt:Key"]!))
-        };
-    });
+    .ConfigureSwagger()
+    .AddEndpointsApiExplorer()
+    .AddSwaggerGen()
+    .AddDbContextConfig(builder.Configuration, builder.Environment.IsDevelopment())
+    .AddRedisCacheConfig()
+    .AddOpenTelemetryConfig()
+    .AddDependencyInjectionConfig()
+    .AddJwtAuthentication(builder.Configuration);
 
 var app = builder.Build();
 
-using (var scope = app.Services.CreateScope())
-{
-    var services = scope.ServiceProvider;
-    try
-    {
-        var context = services.GetRequiredService<EventFlowContext>();
-
-        if (context.Database.GetPendingMigrations().Any())
-        {
-            context.Database.Migrate();
-        }
-    }
-    catch (Exception ex)
-    {
-        Log.Fatal(ex, "Ocorreu um erro ao aplicar as migrações automáticas.");
-    }
-}
-
+app.ApplyDatabaseMigrations();
 app.UseSerilogRequestLogging();
 
 if (app.Environment.IsDevelopment())
@@ -79,7 +29,6 @@
     app.UseSwaggerUI();
 }
 
-
 app.UseAuthentication();
 app.UseAuthorization();