+
+/**
+ * @brief Get alphabetical sorted array of used tags/terms of an user including
+ * a weighting by frequency of use.
+ *
+ * @param int $uid The user ID.
+ * @param int $count Max number of displayed tags/terms.
+ * @param int $owner_id The contact id of the owner of the tagged items.
+ * @param string $flags Special item flags.
+ * @param int $type The tag/term type.
+ *
+ * @return arr Alphabetical sorted array of used tags of an user.
+ */
+function tagadelic($uid, $count = 0, $owner_id = 0, $flags = '', $type = TERM_HASHTAG) {
+ require_once('include/security.php');
+
+ $item_condition = item_condition();
+ $sql_options = item_permissions_sql($uid);
+ $count = intval($count);
+ if ($flags) {
+ if ($flags === 'wall') {
+ $sql_options .= " AND `item`.`wall` ";
+ }
+ }
+
+ if ($owner_id) {
+ $sql_options .= " AND `item`.`owner-id` = ".intval($owner_id)." ";
+ }
+
+ // Fetch tags
+ $r = q("SELECT `term`, COUNT(`term`) AS `total` FROM `term`
+ LEFT JOIN `item` ON `term`.`oid` = `item`.`id`
+ WHERE `term`.`uid` = %d AND `term`.`type` = %d
+ AND `term`.`otype` = %d
+ AND $item_condition $sql_options
+ GROUP BY `term` ORDER BY `total` DESC %s",
+ intval($uid),
+ intval($type),
+ intval(TERM_OBJ_POST),
+ ((intval($count)) ? "LIMIT $count" : '')
+ );
+ if(!DBM::is_result($r)) {
+ return array();
+ }
+
+ return tag_calc($r);
+}
+
+/**
+ * @brief Construct a tag/term cloud block for an user.
+ *
+ * @param int $uid The user ID.
+ * @param int $count Max number of displayed tags/terms.
+ * @param int $owner_id The contact ID of the owner of the tagged items.
+ * @param string $flags Special item flags.
+ * @param int $type The tag/term type.
+ *
+ * @return string HTML formatted output.
+ */
+function wtagblock($uid, $count = 0,$owner_id = 0, $flags = '', $type = TERM_HASHTAG) {
+ $o = '';
+ $r = tagadelic($uid, $count, $owner_id, $flags, $type);
+ if (count($r)) {
+ $contact = dba::select(
+ "contact",
+ array("url"),
+ array("id" => $uid),
+ array("limit" => 1)
+ );
+ $url = System::removedBaseUrl($contact['url']);
+
+ foreach ($r as $rr) {
+ $tag['level'] = $rr[2];
+ $tag['url'] = $url."?tag=".urlencode($rr[0]);
+ $tag['name'] = $rr[0];
+
+ $tags[] = $tag;
+ }
+
+ $tpl = get_markup_template("tagblock_widget.tpl");
+ $o = replace_macros($tpl, array(
+ '$title' => t('Tags'),
+ '$tags' => $tags
+ ));
+
+ }
+ return $o;
+}
+
+/**
+ * @brief Calculate weighting of tags according to the frequency of use.
+ *
+ * @param array $arr Array of tags/terms with tag/term name and total count of use.
+ * @return array Alphabetical sorted array of used tags/terms of an user.
+ */
+function tag_calc($arr) {
+ $tags = array();
+ $min = 1e9;
+ $max = -1e9;
+ $x = 0;
+
+ if (!$arr) {
+ return array();
+ }
+
+ foreach ($arr as $rr) {
+ $tags[$x][0] = $rr['term'];
+ $tags[$x][1] = log($rr['total']);
+ $tags[$x][2] = 0;
+ $min = min($min, $tags[$x][1]);
+ $max = max($max, $tags[$x][1]);
+ $x ++;
+ }
+
+ usort($tags, 'tags_sort');
+ $range = max(.01, $max - $min) * 1.0001;
+
+ for ($x = 0; $x < count($tags); $x ++) {
+ $tags[$x][2] = 1 + floor(9 * ($tags[$x][1] - $min) / $range);
+ }
+
+ return $tags;
+}
+
+/**
+ * @brief Compare function to sort tags/terms alphabetically.
+ *
+ * @param type $a
+ * @param type $b
+ *
+ * @return int
+ */
+function tags_sort($a, $b) {
+ if (strtolower($a[0]) == strtolower($b[0])) {
+ return 0;
+ }
+ return ((strtolower($a[0]) < strtolower($b[0])) ? -1 : 1);
+}
+
+/**
+ * @brief Insert a tag cloud widget for the present profile.
+ *
+ * @param int $limit Max number of displayed tags.
+ * @return string HTML formattat output.
+ */
+function tagcloud_wall_widget($limit = 50) {
+ $a = get_app();
+
+ if(!$a->profile['profile_uid'] || !$a->profile['url']) {
+ return "";
+ }
+
+ if(feature_enabled($a->profile['profile_uid'], 'tagadelic')) {
+ $owner_id = Contact::getIdForURL($a->profile['url']);
+
+ if(!$owner_id) {
+ return "";
+ }
+ return wtagblock($a->profile['profile_uid'], $limit, $owner_id, 'wall');
+ }
+
+ return "";
+}