When disabling third-party deps, don't use Gravatar.

Fixes #2810

app/Composers/CurrentUserComposer.php

@@ -13,6 +13,7 @@ namespace CachetHQ\Cachet\Composers;
 
 use Illuminate\Contracts\View\View;
 use Illuminate\Support\Facades\Auth;
+use McCool\LaravelAutoPresenter\Facades\AutoPresenter;
 
 /**
  * This is the current user composer class.
@@ -32,6 +33,6 @@ class CurrentUserComposer
      */
     public function compose(View $view)
     {
-        $view->withCurrentUser(Auth::user());
+        $view->withCurrentUser(AutoPresenter::decorate(Auth::user()));
     }
 }

app/Models/User.php

@@ -12,18 +12,20 @@
 namespace CachetHQ\Cachet\Models;
 
 use AltThree\Validator\ValidatingTrait;
+use CachetHQ\Cachet\Presenters\UserPresenter;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
 use Illuminate\Support\Facades\Hash;
+use McCool\LaravelAutoPresenter\HasPresenter;
 
 /**
  * This is the user model.
  *
  * @author James Brooks <james@alt-three.com>
  */
-class User extends Authenticatable
+class User extends Authenticatable implements HasPresenter
 {
     use Notifiable, ValidatingTrait;
 
@@ -162,18 +164,6 @@ class User extends Authenticatable
         return $this;
     }
 
-    /**
-     * Returns a Gravatar URL for the users email address.
-     *
-     * @param int $size
-     *
-     * @return string
-     */
-    public function getGravatarAttribute($size = 200)
-    {
-        return sprintf('https://www.gravatar.com/avatar/%s?size=%d', md5(strtolower($this->email)), $size);
-    }
-
     /**
      * Find by api_key, or throw an exception.
      *
@@ -220,4 +210,14 @@ class User extends Authenticatable
     {
         return trim($this->google_2fa_secret) !== '';
     }
+
+    /**
+     * Get the presenter class.
+     *
+     * @return string
+     */
+    public function getPresenterClass()
+    {
+        return UserPresenter::class;
+    }
 }

app/Presenters/UserPresenter.php

@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Presenters;
+
+use Illuminate\Contracts\Support\Arrayable;
+use Laravolt\Avatar\Facade as Avatar;
+use McCool\LaravelAutoPresenter\BasePresenter;
+
+/**
+ * This is the user presenter class.
+ *
+ * @author James Brooks <james@bluebaytravel.co.uk>
+ */
+class UserPresenter extends BasePresenter implements Arrayable
+{
+    /**
+     * Returns the users avatar.
+     *
+     * @return string
+     */
+    public function avatar()
+    {
+        if (setting('enable_external_dependencies')) {
+            return sprintf('https://www.gravatar.com/avatar/%s?size=%d', md5(strtolower($this->email)), 200);
+        }
+
+        return Avatar::create($this->username)->toBase64();
+    }
+
+    /**
+     * Convert the presenter instance to an array.
+     *
+     * @return string[]
+     */
+    public function toArray()
+    {
+        return array_merge($this->wrappedObject->toArray(), [
+            'avatar' => $this->avatar(),
+        ]);
+    }
+}