Can cancel the response to a survey

src/controllers/Routes.ts

@@ -225,6 +225,8 @@ export const Routes : Route[] = [
 	// Surveys controller
 	{path: "/surveys/send_response", cb: (h) => SurveyController.SendResponse(h)},
 
+	{path: "/surveys/cancel_response", cb: (h) => SurveyController.CancelResponse(h)},
+
 
 	// Notifications controller
 	{path: "/notifications/count_unread", cb: (h) => NotificationsController.CountUnread(h)},

src/controllers/SurveyController.ts

@@ -29,6 +29,19 @@ export class SurveyController {
 		h.success();
 	}
 
+	/**
+	 * Cancel the repsonse to a request
+	 * 
+	 * @param h Request handler
+	 */
+	public static async CancelResponse(h: RequestHandler) {
+		const surveyID = await this.PostSurveyIDFromPostID(h, "postID");
+		
+		await SurveyHelper.CancelResponse(h.getUserId(), surveyID);
+
+		h.success();
+	}
+
 
 	/**
 	 * Turn a survey into an API entry