Program.cs

using bom.API.AppSetup;
using NLog;
using NLog.Web;

var logger = NLog.LogManager.Setup().LoadConfigurationFromAppSettings().GetCurrentClassLogger();
logger.Debug("init main");

try
{
    var builder = WebApplication.CreateBuilder(args);

    // NLog: Setup NLog for Dependency injection
    builder.Logging.ClearProviders();
    builder.Logging.SetMinimumLevel(Microsoft.Extensions.Logging.LogLevel.Trace);
    builder.Host.UseNLog();

    // Add services to the container.
    builder.Services.AddControllers();
    builder.Services.AddEndpointsApiExplorer();
    builder.Services.AddSwaggerGen();

    // Inject Dependency classes (Managers, Repositories, etc.)
    AppSetup.RegisterDependency(builder.Services, builder.Configuration["ConnectionStrings:DefaultConnection"] ?? "");

    // CORS policy
    builder.Services.AddCors(options => options.AddPolicy("MyPolicy",
        builder =>
        {
            builder.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader();
        }
    ));

    var app = builder.Build();
    app.UseCors("MyPolicy");

    // Configure the HTTP request pipeline.
    if (app.Environment.IsDevelopment())
    {
        app.UseSwagger();
        app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "BOM API"));
    }

    app.UseHttpsRedirection();

    app.UseAuthorization();

    app.MapControllers();

    app.Run();
}
catch (Exception exception)
{
    // NLog: catch setup errors
    logger.Error(exception, "Stopped program because of exception");
    throw;
}
finally
{
    // Ensure to flush and stop internal timers/threads before application-exit
    NLog.LogManager.Shutdown();
}