DbFirst/DbFirst.API/Program.cs

using DbFirst.API.Dashboards;
using DbFirst.API.Hubs;
using DbFirst.API.Middleware;
using DbFirst.Application;
using DbFirst.Infrastructure;
using DevExpress.AspNetCore;
using DevExpress.DashboardAspNetCore;
using DevExpress.DashboardWeb;

var builder = WebApplication.CreateBuilder(args);

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

// TODO: allow listed origins configured in appsettings.json
// In any case, dont let them to free to use without cors. if there is no origin specified, block all.
// In development you can keep it easy.
builder.Services.AddCors(options =>
{
    options.AddDefaultPolicy(policy =>
    {
        if (builder.Environment.IsDevelopment())
        {
            policy.AllowAnyOrigin()
                  .AllowAnyHeader()
                  .AllowAnyMethod();
        }
        else
        {
            var origins = builder.Configuration.GetSection("Cors:AllowedOrigins").Get<string[]>() ?? Array.Empty<string>();
            if (origins.Length > 0)
            {
                policy.WithOrigins(origins)
                      .AllowAnyHeader()
                      .AllowAnyMethod();
            }
            // if no origins configured, deny all by leaving policy without allowances
        }
    });
});

builder.Services.AddInfrastructure(builder.Configuration);
builder.Services.AddApplication();

builder.Services.AddDevExpressControls();
builder.Services.AddSignalR();
builder.Services.AddSingleton<IDashboardChangeNotifier, DashboardChangeNotifier>();
builder.Services.AddScoped<DashboardConfigurator>(sp =>
    DashboardConfiguratorFactory.Create(sp, builder.Configuration, builder.Environment));

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseMiddleware<ExceptionHandlingMiddleware>();

app.UseDevExpressControls();
app.UseHttpsRedirection();
app.UseCors();
app.UseAuthorization();

app.MapDashboardRoute("api/dashboard", "DefaultDashboard");
app.MapHub<DashboardsHub>("/hubs/dashboards");
app.MapControllers();

app.Run();