More work on the API utilizing Laravel 5.5 exception rendering

Also corrects API format to maintain JSONAPI spec

app/Transformers/Api/ApiTransformer.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Pterodactyl\Transformers\Api;
+
+use Illuminate\Http\Request;
+use League\Fractal\TransformerAbstract;
+use Pterodactyl\Exceptions\PterodactylException;
+
+abstract class ApiTransformer extends TransformerAbstract
+{
+    /**
+     * @var \Illuminate\Http\Request
+     */
+    private $request;
+
+    /**
+     * Setup request object for transformer.
+     *
+     * @param \Illuminate\Http\Request $request
+     */
+    public function __construct(Request $request)
+    {
+        $this->request = $request;
+    }
+
+    /**
+     * Return the request instance being used for this transformer.
+     *
+     * @return \Illuminate\Http\Request
+     */
+    public function getRequest(): Request
+    {
+        return $this->request;
+    }
+
+    /**
+     * Determine if an API key from the request has permission to access
+     * a resource. This is used when loading includes on the transformed
+     * models.
+     *
+     * @param string $permission
+     * @return bool
+     *
+     * @throws \Pterodactyl\Exceptions\PterodactylException
+     */
+    protected function authorize(string $permission): bool
+    {
+        /** @var \Pterodactyl\Models\APIKey $model */
+        $model = $this->request->attributes->get('api_key');
+        if (! $model->relationLoaded('permissions')) {
+            throw new PterodactylException('Permissions must be loaded onto a model before passing to transformer authorize function.');
+        }
+
+        $count = $model->getRelation('permissions')->filter(function ($model) use ($permission) {
+            return $model->permission === $permission;
+        })->count();
+
+        return $count > 0;
+    }
+}