Rewrite of the authentication and authorization system

app/Core/Group/GroupProviderInterface.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace Kanboard\Core\Group;
+
+/**
+ * Group Provider Interface
+ *
+ * @package  group
+ * @author   Frederic Guillot
+ */
+interface GroupProviderInterface
+{
+    /**
+     * Get internal id
+     *
+     * You must return 0 if the group come from an external backend
+     *
+     * @access public
+     * @return integer
+     */
+    public function getInternalId();
+
+    /**
+     * Get external id
+     *
+     * You must return a unique id if the group come from an external provider
+     *
+     * @access public
+     * @return string
+     */
+    public function getExternalId();
+
+    /**
+     * Get group name
+     *
+     * @access public
+     * @return string
+     */
+    public function getName();
+}