VRChat Fluent API

This is a fluent library wrapping the VRChat.API library. Designed around Microsoft's Fluent standard, providing a similar experience towards Azure SDKs.

I am writing basic documentation right now, but will update this in the future (especially if community help provided).

API reference is available at https://vrc-fluent-docs.netlify.app/

This library provides Fluent APIs around the VRChat.API clients, specifically exposing an IVRChat interface, a VRChatClientBuilder, and a VRCGuid near-primitive for verifying VRChat Guids; as well as implementations for .NET services with DI.

View samples in the VRChat.API.UnitSample and VRChat.API.UnitSample.AspNetCore folders

NuGet Packages

Fluent API for .NET, base library

• VRChat.API.Client

Dependency Injection for ASP.NET / .NET Services

• VRChat.API.Extensions.Hosting

Usage

Make sure to have the VRChat.API.Client package installed from NuGet.

using VRChat.API.Client;

IVRChat vrchat = new VRChatClientBuilder() // You can store this builder and use it to re-create new clients whenever
    .WithUsername("username") // .WithCredentials(username, password) can also work
    .WithPassword("password")
    .Build();

if(!vrchat.TryLoginAsync()) // This method calls GetCurrentUserAsync and checks to see if login was successful.
    Console.WriteLine("There was a problem logging in!");

var user = await vrchat.Authentication.GetCurrentUserAsync(); // This method will log you in by default
Console.WriteLine("Logged in as {0}", user.Username);

// The property IVRChat.IsLoggedIn can be used to check, only when using the LoginAsync and TryLoginAsync methods to login.

using VRChat; // VRCGuid is located in the VRChat namespace

// VRCGuid usage
string input = Console.ReadLine(); // usr_c1644b5b-3ca4-45b4-97c6-a2a0de70d469

if(!VRCGuid.TryParse(input, out VRCGuid id))
{
    Console.WriteLine("That ID wasn't a valid VRC ID!");
    return;
}

if(id.Kind != VRCKind.Avatar)
    Console.WriteLine("That isn't an avatar ID! You gave me a '{0}' ID", id.Kind.AsVRChatDescriptor());

// ToString doesn't work on the .Kind enum, you'll need to call .AsVRChatDescriptor() to get the VRChat API-compatible formatted string
// This behaviour may change in the future (looking for a workaround to implement strings)

Console.WriteLine(id.Guid.ToString());
Console.WriteLine(id.ToString());
// The VRCGuid type can be used for strong and fast ID validation when building fluent web services or user-input related services.

Microsoft DI / ASP.NET Core

This library provides Fluent APIs for DI in your .NET services, here's some example usage to get you started.

A detailed sample application is available in the VRChat.API.UnitSample.AspNetCore folder.

Make sure to have the VRChat.API.Extensions.Hosting package installed from NuGet.

using VRChat.API.Extensions.Hosting;

public void ConfigureService(IServiceCollection services)
{
    services.AddVRChat(); // by default, it uses the VRCHAT_USERNAME and VRCHAT_PASSWORD environment variable
    services.AddVRChat("Other"); // Named clients are also available, to be consumed via an IVRChatClientFactory similar to IHttpClientFactory
    services.AddVRChat(Configuration.GetSection("VRChat")); // Configure with IConfiguration, or..
    services.AddVRChat(builder => builder.WithCredentials("username", "password"))); // Use the fluent builder to do whatever you'd like.
    services.AddVRChat("WorldsClient", builder => builder.WithCredentials("username", "password"))); // Use the fluent builder to do whatever you'd like.
}

public void Configure(IVRChatClientFactory factory)
{
    // ... setup app middleware

    factory.LoginAllClients().Wait(); // Login all the clients to give them valid authcookies (unless you explicitly gave a custom Configuration or auth cookie)
}

using VRChat.API.Extensions.Hosting;

// Consume like so
public class UsersController : ControllerBase
{
   [Route("/{id}")] 
   public async Task<IActionResult> GetUserAsync(string id, [FromServices] IVRChat vrchat)
   {
       var user = await vrchat.Users.GetUserAsync(id);
       return Ok(new { user.Username });
   }
}

Working with Named Clients

using VRChat.API.Extensions.Hosting;

// When using named clients, you'll need to use IVRChatClientFactory
// This is always available regardless if you use named clients or not
// Calling CreateClient without any arguments gives you the default IVRChat
// & the implementation is extremely similar to IHttpClientFactory
public class UsersController : ControllerBase
{
    private readonly IVRChat _vrchat;

    public UsersController(IVRChatClientFactory factory) =>
        _vrchat = factory.CreateClient("WorldsClient");

    [Route("/worlds/{id}")] 
    public async Task<IActionResult> GetWorldAsync(string id)
    {
       var world = await vrchat.Worlds.GetWorldAsync(id);
       return Ok(new { world.Name }); // {"name": "world_name"}
    }
}

How is this similar to the Azure SDK?

In the Azure SDK, once an IAzure is configured, you can access Azure resources via the properties.

For example, to list Container Groups: _azure.ContainerGroups.ListByResourceGroupAsync("eus-rg")

In this library, similar fluent properties exist, e.g. _vrchat.Users.GetUserAsync("userId")

Resources are referred to with a strong property type, ContainerGroups vs Users or, NetworkInterfaces vs Moderations

Where is the API reference for talking with VRChat?

That library is a fluent wrapper around the VRChat.API library, which is a C# library maintained by @vrchatapi

Refer to their repository for the API reference.

Contribution

Please help contribute to the API reference and documentation for this library! There is a lot of undocumented behavior.