Updated to account for session switching

src/app/common/services/user-avatar.service.ts

@@ -3,7 +3,7 @@
  * @desc Singleton service used to store the current user avatar as a BehaviorSubject.
  */
 import { Injectable } from '@angular/core';
-import { BehaviorSubject } from 'rxjs';
+import { BehaviorSubject, Subscription } from 'rxjs';
 import { Session } from '../../services/session';
 import { MindsUser } from '../../interfaces/entities';
 
@@ -14,9 +14,17 @@ export class UserAvatarService {
   private minds = window.Minds;
   private user: MindsUser;
   public src$: BehaviorSubject<string>;
+  public loggedIn$: Subscription;
 
   constructor(public session: Session) {
     this.init();
+
+    // Subscribe to loggedIn$ and on login, update src$.
+    this.loggedIn$ = this.session.loggedinEmitter.subscribe(is => {
+      if (is) {
+        this.src$.next(this.getSrc());
+      }
+    });
   }
 
   /**
@@ -24,8 +32,13 @@ export class UserAvatarService {
    */
   public init(): void {
     this.user = this.session.getLoggedInUser();
-    this.src$ = new BehaviorSubject(
-      `${this.minds.cdn_url}icon/${this.user.guid}/large/${this.user.icontime}`
-    );
+    this.src$ = new BehaviorSubject(this.getSrc());
+  }
+
+  /**
+   * Gets the Src string using the global minds object and the held user object.
+   */
+  public getSrc(): string {
+    return `${this.minds.cdn_url}icon/${this.user.guid}/large/${this.user.icontime}`;
   }
 }