Update admin location routes and controller to use service

Needs tests written, uses new validation on model.

app/Services/LocationService.php

@@ -0,0 +1,98 @@
+<?php
+/*
+ * Pterodactyl - Panel
+ * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+namespace Pterodactyl\Services;
+
+use Pterodactyl\Models\Location;
+use Pterodactyl\Exceptions\DisplayException;
+
+class LocationService
+{
+    /**
+     * @var \Pterodactyl\Models\Location
+     */
+    protected $model;
+
+    /**
+     * LocationService constructor.
+     *
+     * @param \Pterodactyl\Models\Location $location
+     */
+    public function __construct(Location $location)
+    {
+        $this->model = $location;
+    }
+
+    /**
+     * Create the location in the database and return it.
+     *
+     * @param  array $data
+     * @return \Pterodactyl\Models\Location
+     *
+     * @throws \Throwable
+     * @throws \Watson\Validating\ValidationException
+     */
+    public function create(array $data)
+    {
+        $location = $this->model->fill($data);
+        $location->saveOrFail();
+
+        return $location;
+    }
+
+    /**
+     * Update location model in the DB.
+     *
+     * @param  \Pterodactyl\Models\Location $location
+     * @param  array                        $data
+     * @return \Pterodactyl\Models\Location
+     *
+     * @throws \Throwable
+     * @throws \Watson\Validating\ValidationException
+     */
+    public function update(Location $location, array $data)
+    {
+        $location->fill($data)->saveOrFail();
+
+        return $location;
+    }
+
+    /**
+     * Delete a model from the DB.
+     *
+     * @param \Pterodactyl\Models\Location $location
+     * @return bool
+     *
+     * @throws \Exception
+     * @throws \Pterodactyl\Exceptions\DisplayException
+     */
+    public function delete(Location $location)
+    {
+        if ($location->nodes()->count() > 0) {
+            throw new DisplayException('Cannot delete a location that has nodes assigned to it.');
+        }
+
+        return $location->delete();
+    }
+}