diff --git a/ui/src/interfaces.ts b/ui/src/interfaces.ts
index cd3961b..5022d81 100644
--- a/ui/src/interfaces.ts
+++ b/ui/src/interfaces.ts
@@ -41,6 +41,7 @@ export enum UserOperation {
   CreatePrivateMessage,
   EditPrivateMessage,
   GetPrivateMessages,
+  UserJoin,
 }
 
 export enum CommentSortType {
diff --git a/ui/src/services/UserService.ts b/ui/src/services/UserService.ts
index 03380e5..0c3325a 100644
--- a/ui/src/services/UserService.ts
+++ b/ui/src/services/UserService.ts
@@ -49,6 +49,7 @@ export class UserService {
     console.log(this.user);
   }
 
+  // TODO find all refs to this, make sure everything is well typed
   public static get Instance() {
     return this._instance || (this._instance = new this());
   }
diff --git a/ui/src/services/WebSocketService.ts b/ui/src/services/WebSocketService.ts
index e72a287..7b338c6 100644
--- a/ui/src/services/WebSocketService.ts
+++ b/ui/src/services/WebSocketService.ts
@@ -67,12 +67,19 @@ export class WebSocketService {
       .subscribe();
 
     console.log(`Connected to ${wsUri}`);
+
+    if (UserService.Instance.user) {
+    }
   }
 
   public static get Instance() {
     return this._instance || (this._instance = new this());
   }
 
+  public userJoin() {
+    this.wsSendWrapper(UserOperation.ListCategories, undefined);
+  }
+
   public login(loginForm: LoginForm) {
     this.subject.next(this.wsSendWrapper(UserOperation.Login, loginForm));
   }
@@ -125,6 +132,7 @@ export class WebSocketService {
     this.subject.next(this.wsSendWrapper(UserOperation.CreatePost, postForm));
   }
 
+  // TODO strictly type these
   public getPost(postId: number) {
     let data = { id: postId, auth: UserService.Instance.auth };
     this.subject.next(this.wsSendWrapper(UserOperation.GetPost, data));