Make server listing and single server view API endpoints work

app/Transformers/Api/Application/PackTransformer.php

@@ -0,0 +1,90 @@
+<?php
+/**
+ * Pterodactyl - Panel
+ * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
+ *
+ * This software is licensed under the terms of the MIT license.
+ * https://opensource.org/licenses/MIT
+ */
+
+namespace Pterodactyl\Transformers\Admin;
+
+use Illuminate\Http\Request;
+use Pterodactyl\Models\Pack;
+use League\Fractal\TransformerAbstract;
+
+class PackTransformer extends TransformerAbstract
+{
+    /**
+     * List of resources that can be included.
+     *
+     * @var array
+     */
+    protected $availableIncludes = [
+        'option',
+        'servers',
+    ];
+
+    /**
+     * The Illuminate Request object if provided.
+     *
+     * @var \Illuminate\Http\Request|bool
+     */
+    protected $request;
+
+    /**
+     * Setup request object for transformer.
+     *
+     * @param \Illuminate\Http\Request|bool $request
+     */
+    public function __construct($request = false)
+    {
+        if (! $request instanceof Request && $request !== false) {
+            throw new DisplayException('Request passed to constructor must be of type Request or false.');
+        }
+
+        $this->request = $request;
+    }
+
+    /**
+     * Return a generic transformed pack array.
+     *
+     * @return array
+     */
+    public function transform($pack)
+    {
+        if (! $pack instanceof Pack) {
+            return ['id' => null];
+        }
+
+        return $pack->toArray();
+    }
+
+    /**
+     * Return the packs associated with this service.
+     *
+     * @return \Leauge\Fractal\Resource\Item
+     */
+    public function includeOption(Pack $pack)
+    {
+        if ($this->request && ! $this->request->apiKeyHasPermission('option-view')) {
+            return;
+        }
+
+        return $this->item($pack->option, new OptionTransformer($this->request), 'option');
+    }
+
+    /**
+     * Return the packs associated with this service.
+     *
+     * @return \Leauge\Fractal\Resource\Collection
+     */
+    public function includeServers(Pack $pack)
+    {
+        if ($this->request && ! $this->request->apiKeyHasPermission('server-list')) {
+            return;
+        }
+
+        return $this->collection($pack->servers, new ServerTransformer($this->request), 'server');
+    }
+}