DirectoryPlugin - Hijack router mapping for normal groups page to substitute a directory page

EVENTS.txt

@@ -1351,3 +1351,18 @@ EndValidateEmailInvite: after validating an email address for invitations
 - $user: user doing the invite
 - $email: email address
 - &$valid: flag for if it's valid; can be modified
+
+StartLocalURL: before resolving a local url for an action
+- &$action: action to find a path for
+- &$paramsi: parameters to pass to the action
+- &$fragment: any url fragement
+- &$addSession: whether to add session variable
+- &$url: resulting URL to local resource
+
+EndLocalURL: before resolving a local url for an action
+- &$action: action to find a path for
+- &$paramsi: parameters to pass to the action
+- &$fragment: any url fragement
+- &$addSession: whether to add session variable
+- &$url: resulting URL to local resource
+

lib/util.php

@@ -1221,6 +1221,7 @@ function common_relative_profile($sender, $nickname, $dt=null)
 
 function common_local_url($action, $args=null, $params=null, $fragment=null, $addSession=true)
 {
+    if (Event::handle('StartLocalURL', array(&$action, &$params, &$fragment, &$addSession, &$url))) {
         $r = Router::get();
         $path = $r->build($action, $args, $params, $fragment);
 
@@ -1235,6 +1236,8 @@ function common_local_url($action, $args=null, $params=null, $fragment=null, $ad
                 $url = common_path('index.php'.$path, $ssl, $addSession);
             }
         }
+        Event::handle('EndLocalURL', array(&$action, &$params, &$fragment, &$addSession, &$url));
+    }
     return $url;
 }
 

plugins/Directory/DirectoryPlugin.php

@@ -85,6 +85,7 @@ class DirectoryPlugin extends Plugin
         switch ($cls)
         {
         case 'UserdirectoryAction':
+        case 'GroupdirectoryAction':
             include_once $dir
                 . '/actions/' . strtolower(mb_substr($cls, 0, -6)) . '.php';
             return false;
@@ -111,6 +112,7 @@ class DirectoryPlugin extends Plugin
      */
     function onRouterInitialized($m)
     {
+
         $m->connect(
             'directory/users',
             array('action' => 'userdirectory'),
@@ -123,6 +125,52 @@ class DirectoryPlugin extends Plugin
             array('filter' => '([0-9a-zA-Z_]{1,64}|0-9)')
         );
 
+        $m->connect(
+            'groups/:filter',
+            array('action' => 'groupdirectory'),
+            array('filter' => '([0-9a-zA-Z_]{1,64}|0-9)')
+        );
+
+        return true;
+    }
+
+    /**
+     * Hijack the routing (URL -> Action) for the normal directory page
+     * and substitute our group directory action
+     *
+     * @param string $path     path to connect
+     * @param array  $defaults path defaults
+     * @param array  $rules    path rules
+     * @param array  $result   unused
+     *
+     * @return boolean hook return
+     */
+    function onStartConnectPath(&$path, &$defaults, &$rules, &$result)
+    {
+        if (in_array($path, array('group', 'group/', 'groups', 'groups/'))) {
+            $defaults['action'] = 'groupdirectory';
+            $rules              = array('filter' => 'all');
+            return true;
+        }
+        return true;
+    }
+
+    /**
+     * Hijack the mapping (Action -> URL) and return the URL to our
+     * group directory page instead of the normal groups page
+     *
+     * @param Action    $action     action to find a path for
+     * @param array     $params     parameters to pass to the action
+     * @param string    $fragment   any url fragement
+     * @param boolean   $addSession whether to add session variable
+     * @param string    $url        resulting URL to local resource
+     *
+     * @return string the local URL
+     */
+    function onEndLocalURL(&$action, &$params, &$fragment, &$addSession, &$url) {
+        if (in_array($action, array('group', 'group/', 'groups', 'groups/'))) {
+                $url = common_local_url('groupdirectory');
+        }
         return true;
     }