Program.cs

using Microsoft.AspNetCore.DataProtection;
using TXTextControl.Web;
using TXTextControl.Web.Collaboration;
using TXTextControl.Web.Collaboration.TestApp.Services;
using TXTextControl.Web.DocumentEditor.Backend;

var builder = WebApplication.CreateBuilder(args);

builder.Logging.ClearProviders();
builder.Logging.AddConsole();
builder.Services.AddControllersWithViews();
builder.Services.AddSingleton<SampleDocumentService>();
builder.Services.AddDataProtection()
    .SetApplicationName("TXTextControl.Web.Collaboration.TestApp")
    .PersistKeysToFileSystem(new DirectoryInfo(Path.Combine(
        builder.Environment.ContentRootPath,
        "App_Data",
        "DataProtectionKeys")));
builder.Services.AddTXTextControlCollaboration(
    builder.Configuration.GetSection(TxTextControlCollaborationOptions.DefaultSectionName));
if (builder.Configuration.GetValue("TextControl:StartEditorBackend", true))
{
    builder.Services.AddHostedService<DocumentEditorWorkerManager>();
}

var app = builder.Build();

app.UseStaticFiles();
app.UseRouting();
app.UseWebSockets();
app.UseTXWebSocketMiddleware();

app.MapStaticAssets();
app.MapControllerRoute(
        name: "default",
        pattern: "{controller=Home}/{action=Index}/{id?}")
    .WithStaticAssets();
app.MapTxTextControlCollaboration();
app.MapGet("/_test/services", (IEnumerable<IHostedService> hostedServices) =>
    Results.Ok(hostedServices.Select(service => service.GetType().FullName).ToArray()));
app.MapGet("/_test/resolve", (IServiceProvider services) =>
{
    var collaboration = services.GetService<ITxTextControlCollaboration>();
    return Results.Ok(new
    {
        collaboration = collaboration?.GetType().FullName
    });
});
app.MapGet("/_test/collaboration/{roomId}", async (
    string roomId,
    ITxTextControlCollaboration collaboration,
    CancellationToken cancellationToken) =>
{
    try
    {
        var data = await collaboration.ExportDocumentAsync(roomId, cancellationToken);
        return Results.Ok(new { exists = data is not null, length = data?.Length ?? 0 });
    }
    catch (Exception exception)
    {
        return Results.Problem(exception.ToString());
    }
});

app.Run();