Fix AvatarChanged event (#2197)

* Fix AvatarChanged event not being dispatched when changing avatar
Also fix the uploader to trigger the event only once

src/User/AvatarUploader.php

@@ -36,13 +36,18 @@ public function upload(User $user, Image $image)
 
         $avatarPath = Str::random().'.png';
 
-        $this->remove($user);
+        $this->removeFileAfterSave($user);
         $user->changeAvatarPath($avatarPath);
 
         $this->uploadDir->put($avatarPath, $encodedImage);
     }
 
-    public function remove(User $user)
+    /**
+     * Handle the removal of the old avatar file after a successful user save
+     * We don't place this in remove() because otherwise we would call changeAvatarPath 2 times when uploading.
+     * @param User $user
+     */
+    protected function removeFileAfterSave(User $user)
     {
         $avatarPath = $user->getOriginal('avatar_url');
 
@@ -51,6 +56,14 @@ public function remove(User $user)
                 $this->uploadDir->delete($avatarPath);
             }
         });
+    }
+
+    /**
+     * @param User $user
+     */
+    public function remove(User $user)
+    {
+        $this->removeFileAfterSave($user);
 
         $user->changeAvatarPath(null);
     }

src/User/Command/UploadAvatarHandler.php

@@ -80,6 +80,8 @@ public function handle(UploadAvatar $command)
 
         $user->save();
 
+        $this->dispatchEventsFor($user, $actor);
+
         return $user;
     }
 }