Unity script example for YouTube Live Streaming API

YouTubeLiveController.cs

using System.Collections;
using System.Collections.Generic;
using System.Threading;
using System;
using System.Net;
using System.Text.RegularExpressions;
using UnityEngine;
using UnityEngine.Networking;
using SimpleJSON;

public class YouTubeLiveController : MonoBehaviour { 
  
  IEnumerator Start() {
    var clientId = "client_id";
    var clientSecret = "client_secret";

    var code = "";
    LocalServer (c => code = c);

    var authUrl = "https://accounts.google.com/o/oauth2/v2/auth?response_type=code"
      + "&client_id=" + clientId
      + "&redirect_uri=" + "http://localhost:8080"
      + "&scope=" + "https://www.googleapis.com/auth/youtube.readonly"
      + "&access_type=" + "offline";
    Application.OpenURL (authUrl);
    yield return new WaitUntil (() => code != "");

    Debug.Log (code);

    var tokenUrl = "https://www.googleapis.com/oauth2/v4/token";
    var content = new Dictionary<string,string> () {
      { "code", code },
      { "client_id", clientId },
      { "client_secret", clientSecret },
      { "redirect_uri",  "http://localhost:8080" },
      { "grant_type", "authorization_code" },
      { "access_type", "offline" },
    };
    var request = UnityWebRequest.Post (tokenUrl, content);
    yield return request.SendWebRequest();

    var json = JSON.Parse (request.downloadHandler.text);
    var token = json["access_token"].RawString();

    Debug.Log (token);

    var url = "https://www.googleapis.com/youtube/v3/liveBroadcasts?part=snippet";
    url += "&id=" + "xxxxxxxxxxx";

    var req = UnityWebRequest.Get (url);
    req.SetRequestHeader ("Authorization", "Bearer " + token);
    yield return req.SendWebRequest();

    json = JSON.Parse (req.downloadHandler.text);
    var chatId = json["items"][0]["snippet"]["liveChatId"].RawString();

    Debug.Log (chatId);

    url = "https://www.googleapis.com/youtube/v3/liveChat/messages?part=snippet,authorDetails";
    url += "&liveChatId=" + chatId;

    req = UnityWebRequest.Get (url);
    req.SetRequestHeader ("Authorization", "Bearer " + token);
    yield return req.SendWebRequest();

    json = JSON.Parse (req.downloadHandler.text);
    var items = json["items"];

    foreach (var item in items) {
      var snip = item.Value ["snippet"];
      var author = item.Value["authorDetails"];
      Debug.Log (author ["displayName"].RawString () + ": "
        + snip ["displayMessage"].RawString());
    }
    Debug.Log (json["nextPageToken"]);
  }

  void LocalServer(Action<string> onReceive) {
    ThreadStart start = () => {
      try {
        var listener = new HttpListener();
        listener.Prefixes.Add("http://*:8080/");
        listener.Start();

        var context = listener.GetContext();
        var req = context.Request;
        var res = context.Response;

        var re = new Regex (@"/\?code=(?<c>.*)");
        var code = re.Match (req.RawUrl).Groups ["c"].ToString();
        onReceive(code);

        res.StatusCode = 200;
        res.Close();
      } catch (Exception e) {
        Debug.LogError(e);
      }
    };
    new Thread (start).Start ();
  }

}

public static class SimpleJsonUtility {
  public static string RawString(this JSONNode node) {
    var len = node.ToString ().Length - 2;
    return node.ToString ().Substring (1, len);
  }
}

Hey,

I was looking for a CS script that Can link my youtube stream to Unity (i'll use or as an overlay) i wanted to know if i Can trigger some animation, or other things, with your script? If yes, how it work? I've no knowledge with API.