OStatus: fix remote groups to work with new user_groups/local_groups split.

- fix <activity:subject> generation so we get the profile info (what's available so far)
- use id instead of nickname for group join/leave forms so we can join/leave remote groups
  while the rest of the groups UI remains limited to local groups
  (plugins are responsible for making sure remote notifications and permission checks are done)
- fix remote notification when joining group through OStatus's remote subscribe form

1 files changed, 21 insertions, 18 deletions

diff --git a/actions/joingroup.php b/actions/joingroup.php
index ba642f712..f87e5dae2 100644
--- a/actions/joingroup.php
+++ b/actions/joingroup.php
@@ -62,30 +62,33 @@ class JoingroupAction extends Action
         }
 
         $nickname_arg = $this->trimmed('nickname');
-        $nickname = common_canonical_nickname($nickname_arg);
-
-        // Permanent redirect on non-canonical nickname
+        $id = intval($this->arg('id'));
+        if ($id) {
+            $this->group = User_group::staticGet('id', $id);
+        } else if ($nickname_arg) {
+            $nickname = common_canonical_nickname($nickname_arg);
+
+            // Permanent redirect on non-canonical nickname
+
+            if ($nickname_arg != $nickname) {
+                $args = array('nickname' => $nickname);
+                common_redirect(common_local_url('leavegroup', $args), 301);
+                return false;
+            }
 
-        if ($nickname_arg != $nickname) {
-            $args = array('nickname' => $nickname);
-            common_redirect(common_local_url('joingroup', $args), 301);
-            return false;
-        }
+            $local = Local_group::staticGet('nickname', $nickname);
 
-        if (!$nickname) {
-            $this->clientError(_('No nickname.'), 404);
-            return false;
-        }
-
-        $local = Local_group::staticGet('nickname', $nickname);
+            if (!$local) {
+                $this->clientError(_('No such group.'), 404);
+                return false;
+            }
 
-        if (!$local) {
-            $this->clientError(_('No such group.'), 404);
+            $this->group = User_group::staticGet('id', $local->group_id);
+        } else {
+            $this->clientError(_('No nickname or ID.'), 404);
             return false;
         }
 
-        $this->group = User_group::staticGet('id', $local->group_id);
-
         if (!$this->group) {
             $this->clientError(_('No such group.'), 404);
             return false;