Add function file editing, and move all service file items into database

app/Models/Service.php

@@ -41,9 +41,52 @@ class Service extends Model
      * @var array
      */
     protected $fillable = [
-        'name', 'description', 'folder', 'startup',
+        'name', 'description', 'folder', 'startup', 'index_file',
     ];
 
+    /**
+     * Returns the default contents of the index.js file for a service.
+     *
+     * @return string
+     */
+    public function defaultIndexFile()
+    {
+        return <<<EOF
+'use strict';
+
+/**
+ * Pterodactyl - Daemon
+ * 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.
+ */
+const rfr = require('rfr');
+const _ = require('lodash');
+
+const Core = rfr('src/services/index.js');
+
+class Service extends Core {}
+
+module.exports = Service;
+EOF;
+    }
+
     /**
      * Gets all service options associated with this service.
      *