From 79c0d52daa92b60e8eed80fa9459367c26f97122 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 25 Feb 2010 11:26:33 -0800
Subject: [PATCH 1/7] OStatus: save categories from the Atom entry as hashtags.

---
 classes/Notice.php                          | 37 +++++++++++--
 lib/activity.php                            | 61 ++++++++++++++++++++-
 lib/distribqueuehandler.php                 | 12 ----
 plugins/OStatus/classes/Ostatus_profile.php | 14 ++++-
 4 files changed, 106 insertions(+), 18 deletions(-)

diff --git a/classes/Notice.php b/classes/Notice.php
index e8d5c45cb2..46c5ebb37c 100644
--- a/classes/Notice.php
+++ b/classes/Notice.php
@@ -121,6 +121,9 @@ class Notice extends Memcached_DataObject
         $result = parent::delete();
     }
 
+    /**
+     * Extract #hashtags from this notice's content and save them to the database.
+     */
     function saveTags()
     {
         /* extract all #hastags */
@@ -129,14 +132,22 @@ class Notice extends Memcached_DataObject
             return true;
         }
 
+        /* Add them to the database */
+        return $this->saveKnownTags($match[1]);
+    }
+
+    /**
+     * Record the given set of hash tags in the db for this notice.
+     * Given tag strings will be normalized and checked for dupes.
+     */
+    function saveKnownTags($hashtags)
+    {
         //turn each into their canonical tag
         //this is needed to remove dupes before saving e.g. #hash.tag = #hashtag
-        $hashtags = array();
-        for($i=0; $i<count($match[1]); $i++) {
-            $hashtags[] = common_canonical_tag($match[1][$i]);
+        for($i=0; $i<count($hashtags); $i++) {
+            $hashtags[$i] = common_canonical_tag($hashtags[$i]);
         }
 
-        /* Add them to the database */
         foreach(array_unique($hashtags) as $hashtag) {
             /* elide characters we don't want in the tag */
             $this->saveTag($hashtag);
@@ -145,6 +156,10 @@ class Notice extends Memcached_DataObject
         return true;
     }
 
+    /**
+     * Record a single hash tag as associated with this notice.
+     * Tag format and uniqueness must be validated by caller.
+     */
     function saveTag($hashtag)
     {
         $tag = new Notice_tag();
@@ -194,6 +209,8 @@ class Notice extends Memcached_DataObject
      *                              place of extracting @-replies from content.
      *              array 'groups' list of group IDs to deliver to, in place of
      *                              extracting ! tags from content
+     *              array 'tags' list of hashtag strings to save with the notice
+     *                           in place of extracting # tags from content
      * @fixme tag override
      *
      * @return Notice
@@ -343,6 +360,8 @@ class Notice extends Memcached_DataObject
 
         $notice->blowOnInsert();
 
+        // Save per-notice metadata...
+
         if (isset($replies)) {
             $notice->saveKnownReplies($replies);
         } else {
@@ -355,6 +374,16 @@ class Notice extends Memcached_DataObject
             $notice->saveGroups();
         }
 
+        if (isset($tags)) {
+            $notice->saveKnownTags($tags);
+        } else {
+            $notice->saveTags();
+        }
+
+        // @fixme pass in data for URLs too?
+        $notice->saveUrls();
+
+        // Prepare inbox delivery, may be queued to background.
         $notice->distribute();
 
         return $notice;
diff --git a/lib/activity.php b/lib/activity.php
index 3de5f62c7c..e592aad6ff 100644
--- a/lib/activity.php
+++ b/lib/activity.php
@@ -859,6 +859,7 @@ class Activity
     public $content; // HTML content of activity
     public $id;      // ID of the activity
     public $title;   // title of the activity
+    public $categories = array(); // list of AtomCategory objects
 
     /**
      * Turns a regular old Atom <entry> into a magical activity
@@ -947,6 +948,14 @@ class Activity
         $this->summary = ActivityUtils::childContent($entry, 'summary');
         $this->id      = ActivityUtils::childContent($entry, 'id');
         $this->content = ActivityUtils::getContent($entry);
+
+        $catEls = $entry->getElementsByTagNameNS(self::ATOM, 'category');
+        if ($catEls) {
+            for ($i = 0; $i < $catEls->length; $i++) {
+                $catEl = $catEls->item($i);
+                $this->categories[] = new AtomCategory($catEl);
+            }
+        }
     }
 
     /**
@@ -1011,6 +1020,10 @@ class Activity
             $xs->raw($this->target->asString('activity:target'));
         }
 
+        foreach ($this->categories as $cat) {
+            $xs->raw($cat->asString());
+        }
+
         $xs->elementEnd('entry');
 
         return $xs->getString();
@@ -1020,4 +1033,50 @@ class Activity
     {
         return ActivityUtils::child($element, $tag, $namespace);
     }
-}
\ No newline at end of file
+}
+
+class AtomCategory
+{
+    public $term;
+    public $scheme;
+    public $label;
+
+    function __construct($element=null)
+    {
+        if ($element && $element->attributes) {
+            $this->term = $this->extract($element, 'term');
+            $this->scheme = $this->extract($element, 'scheme');
+            $this->label = $this->extract($element, 'label');
+        }
+    }
+
+    protected function extract($element, $attrib)
+    {
+        $node = $element->attributes->getNamedItemNS(Activity::ATOM, $attrib);
+        if ($node) {
+            return trim($node->textContent);
+        }
+        $node = $element->attributes->getNamedItem($attrib);
+        if ($node) {
+            return trim($node->textContent);
+        }
+        return null;
+    }
+
+    function asString()
+    {
+        $attribs = array();
+        if ($this->term !== null) {
+            $attribs['term'] = $this->term;
+        }
+        if ($this->scheme !== null) {
+            $attribs['scheme'] = $this->scheme;
+        }
+        if ($this->label !== null) {
+            $attribs['label'] = $this->label;
+        }
+        $xs = new XMLStringer();
+        $xs->element('category', $attribs);
+        return $xs->asString();
+    }
+}
diff --git a/lib/distribqueuehandler.php b/lib/distribqueuehandler.php
index dc183fb36a..d2be7a92c7 100644
--- a/lib/distribqueuehandler.php
+++ b/lib/distribqueuehandler.php
@@ -62,24 +62,12 @@ class DistribQueueHandler
     {
         // XXX: do we need to change this for remote users?
 
-        try {
-            $notice->saveTags();
-        } catch (Exception $e) {
-            $this->logit($notice, $e);
-        }
-
         try {
             $notice->addToInboxes();
         } catch (Exception $e) {
             $this->logit($notice, $e);
         }
 
-        try {
-            $notice->saveUrls();
-        } catch (Exception $e) {
-            $this->logit($notice, $e);
-        }
-
         try {
             Event::handle('EndNoticeSave', array($notice));
             // Enqueue for other handlers
diff --git a/plugins/OStatus/classes/Ostatus_profile.php b/plugins/OStatus/classes/Ostatus_profile.php
index 300e38c05d..d66939399a 100644
--- a/plugins/OStatus/classes/Ostatus_profile.php
+++ b/plugins/OStatus/classes/Ostatus_profile.php
@@ -638,7 +638,9 @@ class Ostatus_profile extends Memcached_DataObject
                         'uri' => $sourceUri,
                         'rendered' => $rendered,
                         'replies' => array(),
-                        'groups' => array());
+                        'groups' => array(),
+                        'tags' => array());
+
 
         // Check for optional attributes...
 
@@ -673,6 +675,16 @@ class Ostatus_profile extends Memcached_DataObject
             }
         }
 
+        // Atom categories <-> hashtags
+        foreach ($activity->categories as $cat) {
+            if ($cat->term) {
+                $term = common_canonical_tag($cat->term);
+                if ($term) {
+                    $options['tags'][] = $term;
+                }
+            }
+        }
+
         try {
             $saved = Notice::saveNew($oprofile->profile_id,
                                      $content,

From a8d0c8d8efca2f0ecd4203184c44c73ff11309fb Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 25 Feb 2010 11:53:39 -0800
Subject: [PATCH 2/7] Normalize nickname case on login; fixes failed logins
 where people were typing MixedCase nicknames (if browser saved this form, it
 would never work again until clearing the saved form data; very icky.)

---
 lib/util.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/util.php b/lib/util.php
index dd8189a582..84928ec484 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -134,7 +134,7 @@ function common_check_user($nickname, $password)
     $authenticatedUser = false;
 
     if (Event::handle('StartCheckPassword', array($nickname, $password, &$authenticatedUser))) {
-        $user = User::staticGet('nickname', $nickname);
+        $user = User::staticGet('nickname', common_canonical_nickname($nickname));
         if (!empty($user)) {
             if (!empty($password)) { // never allow login with blank password
                 if (0 == strcmp(common_munge_password($password, $user->id),

From 7e0872c7ca9827220ad9859abaeea268c9d4fee6 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 25 Feb 2010 12:08:23 -0800
Subject: [PATCH 3/7] Add local_group.sql with DB changes to user_group, setup
 and populate local_group.

---
 DB/local_group.sql | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 DB/local_group.sql

diff --git a/DB/local_group.sql b/DB/local_group.sql
new file mode 100644
index 0000000000..14973e7559
--- /dev/null
+++ b/DB/local_group.sql
@@ -0,0 +1,17 @@
+alter table user_group
+    add uri varchar(255) unique key comment 'universal identifier',
+    add mainpage varchar(255) comment 'page for group info to link to',
+    drop index nickname;
+
+create table local_group (
+
+   group_id integer primary key comment 'group represented' references user_group (id),
+   nickname varchar(64) unique key comment 'group represented',
+
+   created datetime not null comment 'date this record was created',
+   modified timestamp comment 'date this record was modified'
+
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
+
+insert into local_group (group_id, nickname, created, modified)
+    select id, nickname, created, modified from user_group;

From b5b5184c885e74d9532409a5962f851c4baf41c4 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 25 Feb 2010 13:02:08 -0800
Subject: [PATCH 4/7] 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

---
 actions/joingroup.php                       | 41 +++++++++++----------
 actions/leavegroup.php                      | 41 +++++++++++----------
 classes/User_group.php                      |  2 +-
 lib/activity.php                            |  7 +++-
 lib/joinform.php                            |  2 +-
 lib/leaveform.php                           |  2 +-
 lib/router.php                              |  3 ++
 plugins/OStatus/actions/ostatussub.php      | 14 +++++--
 plugins/OStatus/classes/Ostatus_profile.php | 26 +++++++------
 9 files changed, 81 insertions(+), 57 deletions(-)

diff --git a/actions/joingroup.php b/actions/joingroup.php
index ba642f7129..f87e5dae29 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);
+        $id = intval($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
+            // Permanent redirect on non-canonical nickname
 
-        if ($nickname_arg != $nickname) {
-            $args = array('nickname' => $nickname);
-            common_redirect(common_local_url('joingroup', $args), 301);
+            if ($nickname_arg != $nickname) {
+                $args = array('nickname' => $nickname);
+                common_redirect(common_local_url('leavegroup', $args), 301);
+                return false;
+            }
+
+            $local = Local_group::staticGet('nickname', $nickname);
+
+            if (!$local) {
+                $this->clientError(_('No such group.'), 404);
+                return false;
+            }
+
+            $this->group = User_group::staticGet('id', $local->group_id);
+        } else {
+            $this->clientError(_('No nickname or ID.'), 404);
             return false;
         }
 
-        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;
-        }
-
-        $this->group = User_group::staticGet('id', $local->group_id);
-
         if (!$this->group) {
             $this->clientError(_('No such group.'), 404);
             return false;
diff --git a/actions/leavegroup.php b/actions/leavegroup.php
index 222d4c1b43..329b5aafe1 100644
--- a/actions/leavegroup.php
+++ b/actions/leavegroup.php
@@ -62,30 +62,33 @@ class LeavegroupAction extends Action
         }
 
         $nickname_arg = $this->trimmed('nickname');
-        $nickname = common_canonical_nickname($nickname_arg);
+        $id = intval($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
+            // Permanent redirect on non-canonical nickname
 
-        if ($nickname_arg != $nickname) {
-            $args = array('nickname' => $nickname);
-            common_redirect(common_local_url('leavegroup', $args), 301);
+            if ($nickname_arg != $nickname) {
+                $args = array('nickname' => $nickname);
+                common_redirect(common_local_url('leavegroup', $args), 301);
+                return false;
+            }
+
+            $local = Local_group::staticGet('nickname', $nickname);
+
+            if (!$local) {
+                $this->clientError(_('No such group.'), 404);
+                return false;
+            }
+
+            $this->group = User_group::staticGet('id', $local->group_id);
+        } else {
+            $this->clientError(_('No nickname or ID.'), 404);
             return false;
         }
 
-        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;
-        }
-
-        $this->group = User_group::staticGet('id', $local->group_id);
-
         if (!$this->group) {
             $this->clientError(_('No such group.'), 404);
             return false;
diff --git a/classes/User_group.php b/classes/User_group.php
index f24bef7647..2a58d88959 100644
--- a/classes/User_group.php
+++ b/classes/User_group.php
@@ -404,7 +404,7 @@ class User_group extends Memcached_DataObject
         $xs = new XMLStringer(true);
 
         $xs->elementStart('activity:subject');
-        $xs->element('activity:object', null, 'http://activitystrea.ms/schema/1.0/group');
+        $xs->element('activity:object-type', null, 'http://activitystrea.ms/schema/1.0/group');
         $xs->element('id', null, $this->permalink());
         $xs->element('title', null, $this->getBestName());
         $xs->element(
diff --git a/lib/activity.php b/lib/activity.php
index e592aad6ff..4e7ff5336e 100644
--- a/lib/activity.php
+++ b/lib/activity.php
@@ -610,7 +610,10 @@ class ActivityObject
         $object->id     = $profile->getUri();
         $object->title  = $profile->getBestName();
         $object->link   = $profile->profileurl;
-        $object->avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
+        $avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
+        if ($avatar) {
+            $object->avatar = $avatar->displayUrl();
+        }
 
         if (isset($profile->lat) && isset($profile->lon)) {
             $object->geopoint = (float)$profile->lat . ' ' . (float)$profile->lon;
@@ -664,7 +667,7 @@ class ActivityObject
                     'rel'  => 'avatar',
                     'href' => empty($this->avatar)
                     ? Avatar::defaultImage(AVATAR_PROFILE_SIZE)
-                    : $this->avatar->displayUrl()
+                    : $this->avatar
                 ),
                 null
             );
diff --git a/lib/joinform.php b/lib/joinform.php
index aefb553aac..aa8bc20e24 100644
--- a/lib/joinform.php
+++ b/lib/joinform.php
@@ -100,7 +100,7 @@ class JoinForm extends Form
     function action()
     {
         return common_local_url('joingroup',
-                                array('nickname' => $this->group->nickname));
+                                array('id' => $this->group->id));
     }
 
     /**
diff --git a/lib/leaveform.php b/lib/leaveform.php
index e63d96ee80..5469b5704c 100644
--- a/lib/leaveform.php
+++ b/lib/leaveform.php
@@ -100,7 +100,7 @@ class LeaveForm extends Form
     function action()
     {
         return common_local_url('leavegroup',
-                                array('nickname' => $this->group->nickname));
+                                array('id' => $this->group->id));
     }
 
     /**
diff --git a/lib/router.php b/lib/router.php
index 987d0152e4..0e15d83b9a 100644
--- a/lib/router.php
+++ b/lib/router.php
@@ -247,6 +247,9 @@ class Router
                 $m->connect('group/:nickname/'.$v,
                             array('action' => $v.'group'),
                             array('nickname' => '[a-zA-Z0-9]+'));
+                $m->connect('group/:id/id/'.$v,
+                            array('action' => $v.'group'),
+                            array('id' => '[0-9]+'));
             }
 
             foreach (array('members', 'logo', 'rss', 'designsettings') as $n) {
diff --git a/plugins/OStatus/actions/ostatussub.php b/plugins/OStatus/actions/ostatussub.php
index 12832cdcfb..aae22f868a 100644
--- a/plugins/OStatus/actions/ostatussub.php
+++ b/plugins/OStatus/actions/ostatussub.php
@@ -333,10 +333,18 @@ class OStatusSubAction extends Action
             $group = $this->oprofile->localGroup();
             if ($user->isMember($group)) {
                 $this->showForm(_m('Already a member!'));
-            } elseif (Group_member::join($this->oprofile->group_id, $user->id)) {
-                $this->successGroup();
+                return;
+            }
+            if (Event::handle('StartJoinGroup', array($group, $user))) {
+                $ok = Group_member::join($this->oprofile->group_id, $user->id);
+                if ($ok) {
+                    Event::handle('EndJoinGroup', array($group, $user));
+                    $this->successGroup();
+                } else {
+                    $this->showForm(_m('Remote group join failed!'));
+                }
             } else {
-                $this->showForm(_m('Remote group join failed!'));
+                $this->showForm(_m('Remote group join aborted!'));
             }
         } else {
             $local = $this->oprofile->localProfile();
diff --git a/plugins/OStatus/classes/Ostatus_profile.php b/plugins/OStatus/classes/Ostatus_profile.php
index d66939399a..f230170776 100644
--- a/plugins/OStatus/classes/Ostatus_profile.php
+++ b/plugins/OStatus/classes/Ostatus_profile.php
@@ -162,7 +162,7 @@ class Ostatus_profile extends Memcached_DataObject
                              'jpg' => 'image/jpeg',
                              'jpeg' => 'image/jpeg',
                              'gif' => 'image/gif');
-                $extension = pathinfo(parse_url($avatarHref, PHP_URL_PATH), PATHINFO_EXTENSION);
+                $extension = pathinfo(parse_url($object->avatar, PHP_URL_PATH), PATHINFO_EXTENSION);
                 if (isset($map[$extension])) {
                     // @fixme this ain't used/saved yet
                     $object->avatarType = $map[$extension];
@@ -332,6 +332,9 @@ class Ostatus_profile extends Memcached_DataObject
      */
     public function unsubscribe() {
         $feedsub = FeedSub::staticGet('uri', $this->feeduri);
+        if (!$feedsub) {
+            return true;
+        }
         if ($feedsub->sub_state == 'active') {
             return $feedsub->unsubscribe();
         } else if ($feedsub->sub_state == '' || $feedsub->sub_state == 'inactive' || $feedsub->sub_state == 'unsubscribe') {
@@ -356,7 +359,7 @@ class Ostatus_profile extends Memcached_DataObject
             $count = $this->localProfile()->subscriberCount();
         }
         if ($count == 0) {
-            common_log(LOG_INFO, "Unsubscribing from now-unused remote feed $oprofile->feeduri");
+            common_log(LOG_INFO, "Unsubscribing from now-unused remote feed $this->feeduri");
             $this->unsubscribe();
             return true;
         } else {
@@ -1095,8 +1098,8 @@ class Ostatus_profile extends Memcached_DataObject
 
         if ($object->type == ActivityObject::PERSON) {
             $profile = new Profile();
+            $profile->created = common_sql_now();
             self::updateProfile($profile, $object, $hints);
-            $profile->created  = common_sql_now();
 
             $oprofile->profile_id = $profile->insert();
             if (!$oprofile->profile_id) {
@@ -1104,6 +1107,7 @@ class Ostatus_profile extends Memcached_DataObject
             }
         } else {
             $group = new User_group();
+            $group->uri = $homeuri;
             $group->created = common_sql_now();
             self::updateGroup($group, $object, $hints);
 
@@ -1183,19 +1187,19 @@ class Ostatus_profile extends Memcached_DataObject
     {
         $orig = clone($group);
 
-        // @fixme need to make nick unique etc *hack hack*
         $group->nickname = self::getActivityObjectNickname($object, $hints);
         $group->fullname = $object->title;
 
-        // @fixme no canonical profileurl; using homepage instead for now
-        $group->homepage = $object->id;
+        if (!empty($object->link)) {
+            $group->mainpage = $object->link;
+        } else if (array_key_exists('profileurl', $hints)) {
+            $group->mainpage = $hints['profileurl'];
+        }
 
-        // @fixme homepage
-        // @fixme bio
-        // @fixme tags/categories
-        // @fixme location?
         // @todo tags from categories
-        // @todo lat/lon/location?
+        $group->description = self::getActivityObjectBio($object, $hints);
+        $group->location = self::getActivityObjectLocation($object, $hints);
+        $group->homepage = self::getActivityObjectHomepage($object, $hints);
 
         if ($group->id) {
             common_log(LOG_DEBUG, "Updating OStatus group $group->id from remote info $object->id: " . var_export($object, true) . var_export($hints, true));

From 8278eca7ffe5d8c3e05fead042754640b8169411 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 25 Feb 2010 21:15:20 +0000
Subject: [PATCH 5/7] Not sure how this ended up in wrong-cased dir...

---
 {DB => db}/local_group.sql | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename {DB => db}/local_group.sql (100%)

diff --git a/DB/local_group.sql b/db/local_group.sql
similarity index 100%
rename from DB/local_group.sql
rename to db/local_group.sql

From e61edb55d9c92c0c93de3a591928f4760b6cea16 Mon Sep 17 00:00:00 2001
From: Zach Copley <zach@status.net>
Date: Thu, 25 Feb 2010 13:34:43 -0800
Subject: [PATCH 6/7] Rationalize group activity stuff

---
 classes/User_group.php | 46 ++++++++++++++++++++-----------
 lib/activity.php       | 61 ++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 90 insertions(+), 17 deletions(-)

diff --git a/classes/User_group.php b/classes/User_group.php
index f24bef7647..7240e27037 100644
--- a/classes/User_group.php
+++ b/classes/User_group.php
@@ -399,25 +399,41 @@ class User_group extends Memcached_DataObject
         return $xs->getString();
     }
 
+    /**
+     * Returns an XML string fragment with group information as an
+     * Activity Streams <activity:subject> element.
+     *
+     * Assumes that 'activity' namespace has been previously defined.
+     *
+     * @return string
+     */
     function asActivitySubject()
     {
-        $xs = new XMLStringer(true);
+        return $this->asActivityNoun('subject');
+    }
 
-        $xs->elementStart('activity:subject');
-        $xs->element('activity:object', null, 'http://activitystrea.ms/schema/1.0/group');
-        $xs->element('id', null, $this->permalink());
-        $xs->element('title', null, $this->getBestName());
-        $xs->element(
-            'link', array(
-                'rel'  => 'avatar',
-                'href' =>  empty($this->homepage_logo)
-                    ? User_group::defaultLogo(AVATAR_PROFILE_SIZE)
-                    : $this->homepage_logo
-            )
-        );
-        $xs->elementEnd('activity:subject');
+    /**
+     * Returns an XML string fragment with group information as an
+     * Activity Streams noun object with the given element type.
+     *
+     * Assumes that 'activity', 'georss', and 'poco' namespace has been
+     * previously defined.
+     *
+     * @param string $element one of 'actor', 'subject', 'object', 'target'
+     *
+     * @return string
+     */
+    function asActivityNoun($element)
+    {
+        $noun = ActivityObject::fromGroup($this);
+        return $noun->asString('activity:' . $element);
+    }
 
-        return $xs->getString();
+    function getAvatar()
+    {
+        return empty($this->homepage_logo)
+            ? User_group::defaultLogo(AVATAR_PROFILE_SIZE)
+            : $this->homepage_logo;
     }
 
     static function register($fields) {
diff --git a/lib/activity.php b/lib/activity.php
index e592aad6ff..0863cf8fa7 100644
--- a/lib/activity.php
+++ b/lib/activity.php
@@ -223,6 +223,37 @@ class PoCo
         return $poco;
     }
 
+    function fromGroup($group)
+    {
+        if (empty($group)) {
+            return null;
+        }
+
+        $poco = new PoCo();
+
+        $poco->preferredUsername = $group->nickname;
+        $poco->displayName       = $group->getBestName();
+
+        $poco->note = $group->description;
+
+        $paddy = new PoCoAddress();
+        $paddy->formatted = $group->location;
+        $poco->address = $paddy;
+
+        if (!empty($group->homepage)) {
+            array_push(
+                $poco->urls,
+                new PoCoURL(
+                    'homepage',
+                    $group->homepage,
+                    true
+                )
+            );
+        }
+
+        return $poco;
+    }
+
     function getPrimaryURL()
     {
         foreach ($this->urls as $url) {
@@ -621,6 +652,21 @@ class ActivityObject
         return $object;
     }
 
+    static function fromGroup($group)
+    {
+        $object = new ActivityObject();
+
+        $object->type   = ActivityObject::GROUP;
+        $object->id     = $group->getUri();
+        $object->title  = $group->getBestName();
+        $object->link   = $group->getUri();
+        $object->avatar = $group->getAvatar();
+
+        $object->poco = PoCo::fromGroup($group);
+
+        return $object;
+    }
+
     function asString($tag='activity:object')
     {
         $xs = new XMLStringer(true);
@@ -656,8 +702,7 @@ class ActivityObject
             );
         }
 
-        if ($this->type == ActivityObject::PERSON
-            || $this->type == ActivityObject::GROUP) {
+        if ($this->type == ActivityObject::PERSON) {
             $xs->element(
                 'link', array(
                     'type' => empty($this->avatar) ? 'image/png' : $this->avatar->mediatype,
@@ -670,6 +715,18 @@ class ActivityObject
             );
         }
 
+        // XXX: Gotta figure out mime-type! Gar.
+
+        if ($this->type == ActivityObject::GROUP) {
+            $xs->element(
+                'link', array(
+                    'rel'  => 'avatar',
+                    'href' => $this->avatar
+                ),
+                null
+            );
+        }
+
         if (!empty($this->geopoint)) {
             $xs->element(
                 'georss:point',

From e254c660f66e1a04ac18220c95ef47aa88117e3c Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 25 Feb 2010 15:22:23 -0800
Subject: [PATCH 7/7] Fix bug on subscribe/unsubscribe in profile lists. Bogus
 call to nonexisting profile->getProfile() was masked by DB_DataObject

---
 actions/subscribe.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/actions/subscribe.php b/actions/subscribe.php
index 3745311b66..b1243f3933 100644
--- a/actions/subscribe.php
+++ b/actions/subscribe.php
@@ -145,7 +145,7 @@ class SubscribeAction extends Action
             $this->element('title', null, _('Subscribed'));
             $this->elementEnd('head');
             $this->elementStart('body');
-            $unsubscribe = new UnsubscribeForm($this, $this->other->getProfile());
+            $unsubscribe = new UnsubscribeForm($this, $this->other);
             $unsubscribe->show();
             $this->elementEnd('body');
             $this->elementEnd('html');