+
+ /**
+ * @brief Returns the activity verb
+ *
+ * @param array $item Item array
+ *
+ * @return string activity verb
+ */
+ private static function constructVerb(array $item)
+ {
+ if ($item['verb']) {
+ return $item['verb'];
+ }
+ return ACTIVITY_POST;
+ }
+
+ private static function tgroupCheck($uid, $item)
+ {
+ $mention = false;
+
+ // check that the message originated elsewhere and is a top-level post
+
+ if ($item['wall'] || $item['origin'] || ($item['uri'] != $item['parent-uri'])) {
+ return false;
+ }
+
+ $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
+ intval($uid)
+ );
+ if (!DBM::is_result($u)) {
+ return false;
+ }
+
+ $community_page = ($u[0]['page-flags'] == PAGE_COMMUNITY);
+ $prvgroup = ($u[0]['page-flags'] == PAGE_PRVGROUP);
+
+ $link = normalise_link(System::baseUrl() . '/profile/' . $u[0]['nickname']);
+
+ /*
+ * Diaspora uses their own hardwired link URL in @-tags
+ * instead of the one we supply with webfinger
+ */
+ $dlink = normalise_link(System::baseUrl() . '/u/' . $u[0]['nickname']);
+
+ $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism', $item['body'], $matches, PREG_SET_ORDER);
+ if ($cnt) {
+ foreach ($matches as $mtch) {
+ if (link_compare($link, $mtch[1]) || link_compare($dlink, $mtch[1])) {
+ $mention = true;
+ logger('mention found: ' . $mtch[2]);
+ }
+ }
+ }
+
+ if (!$mention) {
+ return false;
+ }
+
+ return $community_page || $prvgroup;
+ }
+
+ /**
+ * This function returns true if $update has an edited timestamp newer
+ * than $existing, i.e. $update contains new data which should override
+ * what's already there. If there is no timestamp yet, the update is
+ * assumed to be newer. If the update has no timestamp, the existing
+ * item is assumed to be up-to-date. If the timestamps are equal it
+ * assumes the update has been seen before and should be ignored.
+ *
+ */
+ private static function isEditedTimestampNewer($existing, $update)
+ {
+ if (!x($existing, 'edited') || !$existing['edited']) {
+ return true;
+ }
+ if (!x($update, 'edited') || !$update['edited']) {
+ return false;
+ }
+
+ $existing_edited = DateTimeFormat::utc($existing['edited']);
+ $update_edited = DateTimeFormat::utc($update['edited']);
+
+ return (strcmp($existing_edited, $update_edited) < 0);
+ }