Add function to call websocket request from JavaScript

Author: exeldro

README.md

@@ -315,6 +315,31 @@ Permissions required: ALL
 window.obsstudio.stopVirtualcam()
 ```
 
+#### Call Websocket request
+Permissions required: ALL
+```js
+/**
+ * @typedef {Object} WebsocketResponse
+ * @property {number} code - RequestStatus code
+ * @property {bool} result - is true if the request resulted in Success. False if otherwise.
+ * @property {string} responseData - JSON string containing response data
+ * @property {string} comment - may be provided by the server on errors to offer further details on why a request failed.
+ */
+
+/**
+ * @callback WebsocketRequestCallback
+ * @param {WebsocketResponse} response
+ */
+
+/**
+ * @param {WebsocketRequestCallback} cb
+ * @param {string} request_type - The request type to call
+ * @param {string} request_data - JSON string containing appropriate request data
+ */
+window.obsstudio.websocketRequest(function (response_data) {
+    console.log(JSON.stringify(response))
+}, request_type, request_data)
+```
 
 ### Register for visibility callbacks
 

browser-app.cpp

@@ -105,7 +105,7 @@ std::vector<std::string> exposedFunctions = {"getControlLevel",     "getCurrentS
 					     "startReplayBuffer",   "stopReplayBuffer", "saveReplayBuffer",
 					     "startVirtualcam",     "stopVirtualcam",   "getScenes",
 					     "setCurrentScene",     "getTransitions",   "getCurrentTransition",
-					     "setCurrentTransition"};
+					     "setCurrentTransition", "websocketRequest"};
 
 void BrowserApp::OnContextCreated(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame>, CefRefPtr<CefV8Context> context)
 {

browser-client.cpp

@@ -19,6 +19,7 @@
 #include "browser-client.hpp"
 #include "obs-browser-source.hpp"
 #include "base64/base64.hpp"
+#include "..\obs-websocket\lib\obs-websocket-api.h"
 #include <nlohmann/json.hpp>
 #include <obs-frontend-api.h>
 #include <obs.hpp>
@@ -153,6 +154,20 @@ bool BrowserClient::OnProcessMessageReceived(CefRefPtr<CefBrowser> browser, CefR
 			obs_frontend_start_virtualcam();
 		} else if (name == "stopVirtualcam") {
 			obs_frontend_stop_virtualcam();
+		} else if (name == "websocketRequest") {
+			std::string request_type = input_args->GetString(1).ToString();
+			std::string request_data_string = input_args->GetString(2).ToString();
+			OBSDataAutoRelease request_data = obs_data_create_from_json(request_data_string.c_str());
+			struct obs_websocket_request_response *response =
+				obs_websocket_call_request(request_type.c_str(), request_data);
+			if (response) {
+				json = {{"code", response->status_code}, {"result", response->status_code == 100}};
+				if (response->response_data)
+					json["responseData"] = response->response_data;
+				if (response->comment)
+					json["comment"] = response->comment;
+				obs_websocket_request_response_free(response);
+			}
 		}
 		[[fallthrough]];
 	case ControlLevel::Advanced: