]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/Item.php
Update does work now
[friendica.git] / src / Model / Item.php
index 12046d4ffca40d634771c8cc5d84151d2e2575ee..1f0d496ab870b72a59fb73f644cb13066c6d0584 100644 (file)
@@ -37,11 +37,11 @@ class Item extends BaseObject
        // Field list that is used to display the items
        const DISPLAY_FIELDLIST = ['uid', 'id', 'parent', 'uri', 'thr-parent', 'parent-uri', 'guid', 'network',
                        'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink',
-                       'wall', 'private', 'starred', 'origin', 'title', 'body', 'file', 'attach',
+                       'wall', 'private', 'starred', 'origin', 'title', 'body', 'file', 'attach', 'language',
                        'content-warning', 'location', 'coord', 'app', 'rendered-hash', 'rendered-html', 'object',
                        'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'item_id',
-                       'author-id', 'author-link', 'author-name', 'author-avatar',
-                       'owner-id', 'owner-link', 'owner-name', 'owner-avatar',
+                       'author-id', 'author-link', 'author-name', 'author-avatar', 'author-network',
+                       'owner-id', 'owner-link', 'owner-name', 'owner-avatar', 'owner-network',
                        'contact-id', 'contact-link', 'contact-name', 'contact-avatar',
                        'writable', 'self', 'cid', 'alias',
                        'event-id', 'event-created', 'event-edited', 'event-start', 'event-finish',
@@ -58,13 +58,16 @@ class Item extends BaseObject
                        'signed_text', 'signature', 'signer'];
 
        // Field list for "item-content" table that is mixed with the item table
-       const CONTENT_FIELDLIST = ['title', 'content-warning', 'body', 'location',
+       const MIXED_CONTENT_FIELDLIST = ['title', 'content-warning', 'body', 'location',
                        'coord', 'app', 'rendered-hash', 'rendered-html', 'verb',
                        'object-type', 'object', 'target-type', 'target', 'plink'];
 
+       // Field list for "item-content" table that is not present in the "item" table
+       const CONTENT_FIELDLIST = ['language'];
+
        // All fields in the item table
        const ITEM_FIELDLIST = ['id', 'uid', 'parent', 'uri', 'parent-uri', 'thr-parent', 'guid',
-                       'contact-id', 'type', 'wall', 'gravity', 'extid', 'icid',
+                       'contact-id', 'type', 'wall', 'gravity', 'extid', 'icid', 'iaid',
                        'created', 'edited', 'commented', 'received', 'changed', 'verb',
                        'postopts', 'plink', 'resource-id', 'event-id', 'tag', 'attach', 'inform',
                        'file', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
@@ -75,6 +78,40 @@ class Item extends BaseObject
                        'author-id', 'author-link', 'author-name', 'author-avatar',
                        'owner-id', 'owner-link', 'owner-name', 'owner-avatar'];
 
+       const ACTIVITIES = [ACTIVITY_LIKE, ACTIVITY_DISLIKE, ACTIVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE];
+
+       /**
+        * @brief returns an activity index from an activity string
+        *
+        * @param string $activity activity string
+        * @return integer Activity index
+        */
+       private static function activityToIndex($activity)
+       {
+               $index = array_search($activity, self::ACTIVITIES);
+
+               if (is_bool($index)) {
+                       $index = -1;
+               }
+
+               return $index;
+       }
+
+       /**
+        * @brief returns an activity string from an activity index
+        *
+        * @param integer $index activity index
+        * @return string Activity string
+        */
+       private static function indexToActivity($index)
+       {
+               if (!isset(self::ACTIVITIES[$index])) {
+                       return '';
+               }
+
+               return self::ACTIVITIES[$index];
+       }
+
        /**
         * @brief Fetch a single item row
         *
@@ -85,14 +122,12 @@ class Item extends BaseObject
        {
                $row = dba::fetch($stmt);
 
-               // Fetch data from the item-content table whenever there is content there
-               foreach (self::CONTENT_FIELDLIST as $field) {
-                       if (empty($row[$field]) && !empty($row['item-' . $field])) {
-                               $row[$field] = $row['item-' . $field];
-                       }
-                       unset($row['item-' . $field]);
+               if (is_bool($row)) {
+                       return $row;
                }
 
+               // ---------------------- Transform item structure data ----------------------
+
                // We prefer the data from the user's contact over the public one
                if (!empty($row['author-link']) && !empty($row['contact-link']) &&
                        ($row['author-link'] == $row['contact-link'])) {
@@ -115,11 +150,63 @@ class Item extends BaseObject
                }
 
                // We can always comment on posts from these networks
-               if (isset($row['writable']) && !empty($row['network']) &&
-                       in_array($row['network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
+               if (array_key_exists('writable', $row) &&
+                       in_array($row['internal-network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
                        $row['writable'] = true;
                }
 
+               // ---------------------- Transform item content data ----------------------
+
+               // Fetch data from the item-content table whenever there is content there
+               foreach (self::MIXED_CONTENT_FIELDLIST as $field) {
+                       if (empty($row[$field]) && !empty($row['internal-item-' . $field])) {
+                               $row[$field] = $row['internal-item-' . $field];
+                       }
+                       unset($row['internal-item-' . $field]);
+               }
+
+               if (!empty($row['internal-iaid']) && array_key_exists('verb', $row)) {
+                       $row['verb'] = self::indexToActivity($row['internal-activity']);
+                       if (array_key_exists('title', $row)) {
+                               $row['title'] = '';
+                       }
+                       if (array_key_exists('body', $row)) {
+                               $row['body'] = $row['verb'];
+                       }
+                       if (array_key_exists('object', $row)) {
+                               $row['object'] = '';
+                       }
+                       if (array_key_exists('object-type', $row)) {
+                               $row['object-type'] = ACTIVITY_OBJ_NOTE;
+                       }
+               } elseif (in_array($row['verb'], ['', ACTIVITY_POST, ACTIVITY_SHARE])) {
+                       // Posts don't have an object or target - but having tags or files.
+                       // We safe some performance by building tag and file strings only here.
+                       // We remove object and target since they aren't used for this type.
+                       if (array_key_exists('object', $row)) {
+                               $row['object'] = '';
+                       }
+                       if (array_key_exists('target', $row)) {
+                               $row['target'] = '';
+                       }
+                       // Build the tag string out of the term entries
+                       if (array_key_exists('tag', $row)) {
+                               $row['tag'] = Term::tagTextFromItemId($row['internal-iid']);
+                       }
+
+                       // Build the file string out of the term entries
+                       if (array_key_exists('file', $row)) {
+                               $row['file'] = Term::fileTextFromItemId($row['internal-iid']);
+                       }
+               }
+
+               // Remove internal fields
+               unset($row['internal-activity']);
+               unset($row['internal-network']);
+               unset($row['internal-iid']);
+               unset($row['internal-iaid']);
+               unset($row['internal-icid']);
+
                return $row;
        }
 
@@ -266,7 +353,7 @@ class Item extends BaseObject
 
                $param_string = self::addTablesToFields(dba::buildParameter($params), $fields);
 
-               $table = "`item` " . self::constructJoins($uid, $select_fields . $condition_string . $param_string, false);
+               $table = "`item` " . self::constructJoins($uid, $select_fields . $condition_string . $param_string, false, $usermode);
 
                $sql = "SELECT " . $select_fields . " FROM " . $table . $condition_string . $param_string;
 
@@ -381,7 +468,7 @@ class Item extends BaseObject
                $param_string = self::addTablesToFields($param_string, $threadfields);
                $param_string = self::addTablesToFields($param_string, $fields);
 
-               $table = "`thread` " . self::constructJoins($uid, $select_fields . $condition_string . $param_string, true);
+               $table = "`thread` " . self::constructJoins($uid, $select_fields . $condition_string . $param_string, true, $usermode);
 
                $sql = "SELECT " . $select_fields . " FROM " . $table . $condition_string . $param_string;
 
@@ -404,15 +491,19 @@ class Item extends BaseObject
                        'file', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
                        'private', 'pubmail', 'moderated', 'visible', 'starred', 'bookmark',
                        'unseen', 'deleted', 'origin', 'forum_mode', 'mention', 'global',
-                       'id' => 'item_id', 'network', 'icid'];
+                       'id' => 'item_id', 'network', 'icid', 'iaid', 'id' => 'internal-iid',
+                       'network' => 'internal-network', 'icid' => 'internal-icid',
+                       'iaid' => 'internal-iaid'];
+
+               $fields['item-activity'] = ['activity' => 'internal-activity'];
 
-               $fields['item-content'] = self::CONTENT_FIELDLIST;
+               $fields['item-content'] = array_merge(self::CONTENT_FIELDLIST, self::MIXED_CONTENT_FIELDLIST);
 
                $fields['author'] = ['url' => 'author-link', 'name' => 'author-name',
-                       'thumb' => 'author-avatar', 'nick' => 'author-nick'];
+                       'thumb' => 'author-avatar', 'nick' => 'author-nick', 'network' => 'author-network'];
 
                $fields['owner'] = ['url' => 'owner-link', 'name' => 'owner-name',
-                       'thumb' => 'owner-avatar', 'nick' => 'owner-nick'];
+                       'thumb' => 'owner-avatar', 'nick' => 'owner-nick', 'network' => 'owner-network'];
 
                $fields['contact'] = ['url' => 'contact-link', 'name' => 'contact-name', 'thumb' => 'contact-avatar',
                        'writable', 'self', 'id' => 'cid', 'alias', 'uid' => 'contact-uid',
@@ -460,7 +551,7 @@ class Item extends BaseObject
         *
         * @return string The SQL joins for the "select" functions
         */
-       private static function constructJoins($uid, $sql_commands, $thread_mode)
+       private static function constructJoins($uid, $sql_commands, $thread_mode, $user_mode)
        {
                if ($thread_mode) {
                        $master_table = "`thread`";
@@ -472,14 +563,26 @@ class Item extends BaseObject
                        $joins = '';
                }
 
-               $joins .= sprintf("STRAIGHT_JOIN `contact` ON `contact`.`id` = $master_table.`contact-id`
-                       AND NOT `contact`.`blocked`
-                       AND ((NOT `contact`.`readonly` AND NOT `contact`.`pending` AND (`contact`.`rel` IN (%s, %s)))
-                       OR `contact`.`self` OR (`item`.`id` != `item`.`parent`) OR `contact`.`uid` = 0)
-                       STRAIGHT_JOIN `contact` AS `author` ON `author`.`id` = $master_table.`author-id` AND NOT `author`.`blocked`
-                       STRAIGHT_JOIN `contact` AS `owner` ON `owner`.`id` = $master_table.`owner-id` AND NOT `owner`.`blocked`
-                       LEFT JOIN `user-item` ON `user-item`.`iid` = $master_table_key AND `user-item`.`uid` = %d",
-                       CONTACT_IS_SHARING, CONTACT_IS_FRIEND, intval($uid));
+               if ($user_mode) {
+                       $joins .= sprintf("STRAIGHT_JOIN `contact` ON `contact`.`id` = $master_table.`contact-id`
+                               AND NOT `contact`.`blocked`
+                               AND ((NOT `contact`.`readonly` AND NOT `contact`.`pending` AND (`contact`.`rel` IN (%s, %s)))
+                               OR `contact`.`self` OR (`item`.`id` != `item`.`parent`) OR `contact`.`uid` = 0)
+                               STRAIGHT_JOIN `contact` AS `author` ON `author`.`id` = $master_table.`author-id` AND NOT `author`.`blocked`
+                               STRAIGHT_JOIN `contact` AS `owner` ON `owner`.`id` = $master_table.`owner-id` AND NOT `owner`.`blocked`
+                               LEFT JOIN `user-item` ON `user-item`.`iid` = $master_table_key AND `user-item`.`uid` = %d",
+                               CONTACT_IS_SHARING, CONTACT_IS_FRIEND, intval($uid));
+               } else {
+                       if (strpos($sql_commands, "`contact`.") !== false) {
+                               $joins .= "STRAIGHT_JOIN `contact` ON `contact`.`id` = $master_table.`contact-id`";
+                       }
+                       if (strpos($sql_commands, "`author`.") !== false) {
+                               $joins .= " STRAIGHT_JOIN `contact` AS `author` ON `author`.`id` = $master_table.`author-id`";
+                       }
+                       if (strpos($sql_commands, "`owner`.") !== false) {
+                               $joins .= " STRAIGHT_JOIN `contact` AS `owner` ON `owner`.`id` = $master_table.`owner-id`";
+                       }
+               }
 
                if (strpos($sql_commands, "`group_member`.") !== false) {
                        $joins .= " STRAIGHT_JOIN `group_member` ON `group_member`.`contact-id` = $master_table.`contact-id`";
@@ -497,6 +600,10 @@ class Item extends BaseObject
                        $joins .= " LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`";
                }
 
+               if (strpos($sql_commands, "`item-activity`.") !== false) {
+                       $joins .= " LEFT JOIN `item-activity` ON `item-activity`.`id` = `item`.`iaid`";
+               }
+
                if (strpos($sql_commands, "`item-content`.") !== false) {
                        $joins .= " LEFT JOIN `item-content` ON `item-content`.`id` = `item`.`icid`";
                }
@@ -522,12 +629,23 @@ class Item extends BaseObject
         */
        private static function constructSelectFields($fields, $selected)
        {
+               if (!empty($selected)) {
+                       $selected[] = 'internal-iid';
+                       $selected[] = 'internal-iaid';
+                       $selected[] = 'internal-icid';
+                       $selected[] = 'internal-network';
+               }
+
+               if (in_array('verb', $selected)) {
+                       $selected[] = 'internal-activity';
+               }
+
                $selection = [];
                foreach ($fields as $table => $table_fields) {
                        foreach ($table_fields as $field => $select) {
                                if (empty($selected) || in_array($select, $selected)) {
-                                       if (in_array($select, self::CONTENT_FIELDLIST)) {
-                                               $selection[] = "`item`.`".$select."` AS `item-" . $select . "`";
+                                       if (in_array($select, self::MIXED_CONTENT_FIELDLIST)) {
+                                               $selection[] = "`item`.`".$select."` AS `internal-item-" . $select . "`";
                                        }
                                        if (is_int($field)) {
                                                $selection[] = "`" . $table . "`.`" . $select . "`";
@@ -591,16 +709,30 @@ class Item extends BaseObject
                // We cannot simply expand the condition to check for origin entries
                // The condition needn't to be a simple array but could be a complex condition.
                // And we have to execute this query before the update to ensure to fetch the same data.
-               $items = dba::select('item', ['id', 'origin', 'uri', 'plink'], $condition);
+               $items = dba::select('item', ['id', 'origin', 'uri', 'plink', 'iaid', 'icid'], $condition);
 
                $content_fields = [];
-               foreach (self::CONTENT_FIELDLIST as $field) {
+               foreach (array_merge(self::CONTENT_FIELDLIST, self::MIXED_CONTENT_FIELDLIST) as $field) {
                        if (isset($fields[$field])) {
                                $content_fields[$field] = $fields[$field];
                                unset($fields[$field]);
                        }
                }
 
+               if (array_key_exists('tag', $fields)) {
+                       $tags = $fields['tag'];
+                       unset($fields['tag']);
+               } else {
+                       $tags = '';
+               }
+
+               if (array_key_exists('file', $fields)) {
+                       $files = $fields['file'];
+                       unset($fields['file']);
+               } else {
+                       $files = '';
+               }
+
                if (!empty($fields)) {
                        $success = dba::update('item', $fields, $condition);
 
@@ -616,11 +748,49 @@ class Item extends BaseObject
 
                while ($item = dba::fetch($items)) {
                        if (!empty($item['plink'])) {
-                               $content_fields['plink'] =  $item['plink'];
+                               $content_fields['plink'] = $item['plink'];
+                       }
+                       if (self::updateActivity($content_fields, ['uri' => $item['uri']])) {
+                               if (empty($item['iaid'])) {
+                                       $item_activity = dba::selectFirst('item-activity', ['id'], ['uri' => $item['uri']]);
+                                       if (DBM::is_result($item_activity)) {
+                                               $item_fields = ['iaid' => $item_activity['id'], 'icid' => null];
+                                               foreach (self::MIXED_CONTENT_FIELDLIST as $field) {
+                                                       $item_fields[$field] = '';
+                                               }
+                                               dba::update('item', $item_fields, ['id' => $item['id']]);
+
+                                               if (!empty($item['icid']) && !dba::exists('item', ['icid' => $item['icid']])) {
+                                                       dba::delete('item-content', ['id' => $item['icid']]);
+                                               }
+                                       }
+                               }
+                       } else {
+                               self::updateContent($content_fields, ['uri' => $item['uri']]);
+
+                               if (empty($item['icid'])) {
+                                       $item_content = dba::selectFirst('item-content', [], ['uri' => $item['uri']]);
+                                       if (DBM::is_result($item_content)) {
+                                               $item_fields = ['icid' => $item_content['id']];
+                                               // Clear all fields in the item table that have a content in the item-content table
+                                               foreach ($item_content as $field => $content) {
+                                                       if (in_array($field, self::MIXED_CONTENT_FIELDLIST) && !empty($item_content[$field])) {
+                                                               $item_fields[$field] = '';
+                                                       }
+                                               }
+                                               dba::update('item', $item_fields, ['id' => $item['id']]);
+                                       }
+                               }
                        }
-                       self::updateContent($content_fields, ['uri' => $item['uri']]);
-                       Term::insertFromTagFieldByItemId($item['id']);
-                       Term::insertFromFileFieldByItemId($item['id']);
+
+                       if (!empty($tags)) {
+                               Term::insertFromTagFieldByItemId($item['id'], $tags);
+                       }
+
+                       if (!empty($files)) {
+                               Term::insertFromFileFieldByItemId($item['id'], $files);
+                       }
+
                        self::updateThread($item['id']);
 
                        // We only need to notfiy others when it is an original entry from us.
@@ -690,7 +860,7 @@ class Item extends BaseObject
                $fields = ['id', 'uri', 'uid', 'parent', 'parent-uri', 'origin',
                        'deleted', 'file', 'resource-id', 'event-id', 'attach',
                        'verb', 'object-type', 'object', 'target', 'contact-id'];
-               $item = dba::selectFirst('item', $fields, ['id' => $item_id]);
+               $item = self::selectFirst($fields, ['id' => $item_id]);
                if (!DBM::is_result($item)) {
                        logger('Item with ID ' . $item_id . " hasn't been found.", LOGGER_DEBUG);
                        return false;
@@ -701,7 +871,7 @@ class Item extends BaseObject
                        return false;
                }
 
-               $parent = dba::selectFirst('item', ['origin'], ['id' => $item['parent']]);
+               $parent = self::selectFirst(['origin'], ['id' => $item['parent']]);
                if (!DBM::is_result($parent)) {
                        $parent = ['origin' => false];
                }
@@ -757,8 +927,8 @@ class Item extends BaseObject
                        'object' => '', 'target' => '', 'tag' => '', 'postopts' => '', 'attach' => '', 'file' => ''];
                dba::update('item', $item_fields, ['id' => $item['id']]);
 
-               Term::insertFromTagFieldByItemId($item['id']);
-               Term::insertFromFileFieldByItemId($item['id']);
+               Term::insertFromTagFieldByItemId($item['id'], '');
+               Term::insertFromFileFieldByItemId($item['id'], '');
                self::deleteThread($item['id'], $item['parent-uri']);
 
                if (!self::exists(["`uri` = ? AND `uid` != 0 AND NOT `deleted`", $item['uri']])) {
@@ -781,7 +951,7 @@ class Item extends BaseObject
                } elseif ($item['uid'] != 0) {
 
                        // When we delete just our local user copy of an item, we have to set a marker to hide it
-                       $global_item = dba::selectFirst('item', ['id'], ['uri' => $item['uri'], 'uid' => 0, 'deleted' => false]);
+                       $global_item = self::selectFirst(['id'], ['uri' => $item['uri'], 'uid' => 0, 'deleted' => false]);
                        if (DBM::is_result($global_item)) {
                                dba::update('user-item', ['hidden' => true], ['iid' => $global_item['id'], 'uid' => $item['uid']], true);
                        }
@@ -805,7 +975,7 @@ class Item extends BaseObject
                        return;
                }
 
-               $i = dba::selectFirst('item', ['id', 'contact-id', 'tag'], ['uri' => $xt->id, 'uid' => $item['uid']]);
+               $i = self::selectFirst(['id', 'contact-id', 'tag'], ['uri' => $xt->id, 'uid' => $item['uid']]);
                if (!DBM::is_result($i)) {
                        return;
                }
@@ -1021,7 +1191,7 @@ class Item extends BaseObject
                        $condition = ["`uri` = ? AND `uid` = ? AND `network` IN (?, ?, ?)",
                                trim($item['uri']), $item['uid'],
                                NETWORK_DIASPORA, NETWORK_DFRN, NETWORK_OSTATUS];
-                       $existing = dba::selectFirst('item', ['id', 'network'], $condition);
+                       $existing = self::selectFirst(['id', 'network'], $condition);
                        if (DBM::is_result($existing)) {
                                // We only log the entries with a different user id than 0. Otherwise we would have too many false positives
                                if ($uid != 0) {
@@ -1032,7 +1202,7 @@ class Item extends BaseObject
                        }
                }
 
-               self::addLanguageInPostopts($item);
+               self::addLanguageToItemArray($item);
 
                $item['wall']          = intval(defaults($item, 'wall', 0));
                $item['extid']         = trim(defaults($item, 'extid', ''));
@@ -1178,7 +1348,7 @@ class Item extends BaseObject
                                'wall', 'private', 'forum_mode', 'origin'];
                        $condition = ['uri' => $item['parent-uri'], 'uid' => $item['uid']];
                        $params = ['order' => ['id' => false]];
-                       $parent = dba::selectFirst('item', $fields, $condition, $params);
+                       $parent = self::selectFirst($fields, $condition, $params);
 
                        if (DBM::is_result($parent)) {
                                // is the new message multi-level threaded?
@@ -1192,7 +1362,7 @@ class Item extends BaseObject
                                                'parent-uri' => $item['parent-uri'],
                                                'uid' => $item['uid']];
                                        $params = ['order' => ['id' => false]];
-                                       $toplevel_parent = dba::selectFirst('item', $fields, $condition, $params);
+                                       $toplevel_parent = self::selectFirst($fields, $condition, $params);
 
                                        if (DBM::is_result($toplevel_parent)) {
                                                $parent = $toplevel_parent;
@@ -1337,8 +1507,24 @@ class Item extends BaseObject
 
                logger('' . print_r($item,true), LOGGER_DATA);
 
+               if (array_key_exists('tag', $item)) {
+                       $tags = $item['tag'];
+                       unset($item['tag']);
+               } else {
+                       $tags = '';
+               }
+
+               if (array_key_exists('file', $item)) {
+                       $files = $item['file'];
+                       unset($item['file']);
+               } else {
+                       $files = '';
+               }
+
                // We are doing this outside of the transaction to avoid timing problems
-               self::insertContent($item);
+               if (!self::insertActivity($item)) {
+                       self::insertContent($item);
+               }
 
                dba::transaction();
                $ret = dba::insert('item', $item);
@@ -1444,7 +1630,7 @@ class Item extends BaseObject
                 * in it.
                 */
                if (!$deleted && !$dontcache) {
-                       $posted_item = dba::selectFirst('item', [], ['id' => $current_post]);
+                       $posted_item = self::selectFirst(self::ITEM_FIELDLIST, ['id' => $current_post]);
                        if (DBM::is_result($posted_item)) {
                                if ($notify) {
                                        Addon::callHooks('post_local_end', $posted_item);
@@ -1468,8 +1654,13 @@ class Item extends BaseObject
                 * Due to deadlock issues with the "term" table we are doing these steps after the commit.
                 * This is not perfect - but a workable solution until we found the reason for the problem.
                 */
-               Term::insertFromTagFieldByItemId($current_post);
-               Term::insertFromFileFieldByItemId($current_post);
+               if (!empty($tags)) {
+                       Term::insertFromTagFieldByItemId($current_post, $tags);
+               }
+
+               if (!empty($files)) {
+                       Term::insertFromFileFieldByItemId($current_post, $files);
+               }
 
                if ($item['parent-uri'] === $item['uri']) {
                        self::addShadow($current_post);
@@ -1488,6 +1679,55 @@ class Item extends BaseObject
                return $current_post;
        }
 
+       /**
+        * @brief Insert a new item content entry
+        *
+        * @param array $item The item fields that are to be inserted
+        */
+       private static function insertActivity(&$item)
+       {
+               $activity_index = self::activityToIndex($item['verb']);
+
+               if ($activity_index < 0) {
+                       return false;
+               }
+
+               $fields = ['uri' => $item['uri'], 'activity' => $activity_index,
+                       'uri-hash' => hash('sha1', $item['uri']) . hash('ripemd160', $item['uri'])];
+
+               $saved_item = $item;
+
+               // We just remove everything that is content
+               foreach (array_merge(self::CONTENT_FIELDLIST, self::MIXED_CONTENT_FIELDLIST) as $field) {
+                       unset($item[$field]);
+               }
+
+               // To avoid timing problems, we are using locks.
+               $locked = Lock::set('item_insert_activity');
+               if (!$locked) {
+                       logger("Couldn't acquire lock for URI " . $item['uri'] . " - proceeding anyway.");
+               }
+
+               // Do we already have this content?
+               $item_activity = dba::selectFirst('item-activity', ['id'], ['uri' => $item['uri']]);
+               if (DBM::is_result($item_activity)) {
+                       $item['iaid'] = $item_activity['id'];
+                       logger('Fetched activity for URI ' . $item['uri'] . ' (' . $item['iaid'] . ')');
+               } elseif (dba::insert('item-activity', $fields)) {
+                       $item['iaid'] = dba::lastInsertId();
+                       logger('Inserted activity for URI ' . $item['uri'] . ' (' . $item['iaid'] . ')');
+               } else {
+                       // This shouldn't happen. But if it does, we simply store it in the item-content table
+                       logger('Could not insert activity for URI ' . $item['uri'] . ' - should not happen');
+                       $item = $saved_item;
+                       return false;
+               }
+               if ($locked) {
+                       Lock::remove('item_insert_activity');
+               }
+               return true;
+       }
+
        /**
         * @brief Insert a new item content entry
         *
@@ -1498,7 +1738,7 @@ class Item extends BaseObject
                $fields = ['uri' => $item['uri'], 'plink' => $item['plink'],
                        'uri-plink-hash' => hash('sha1', $item['plink']).hash('sha1', $item['uri'])];
 
-               foreach (self::CONTENT_FIELDLIST as $field) {
+               foreach (array_merge(self::CONTENT_FIELDLIST, self::MIXED_CONTENT_FIELDLIST) as $field) {
                        if (isset($item[$field])) {
                                $fields[$field] = $item[$field];
                                unset($item[$field]);
@@ -1546,6 +1786,33 @@ class Item extends BaseObject
                }
        }
 
+       /**
+        * @brief Update existing item content entries
+        *
+        * @param array $item The item fields that are to be changed
+        * @param array $condition The condition for finding the item content entries
+        */
+       private static function updateActivity($item, $condition)
+       {
+               if (empty($item['verb'])) {
+                       return false;
+               }
+               $activity_index = self::activityToIndex($item['verb']);
+
+               if ($activity_index < 0) {
+                       return false;
+               }
+
+               $fields = ['activity' => $activity_index,
+                       'uri-hash' => hash('sha1', $condition['uri']) . hash('ripemd160', $condition['uri'])];
+
+               logger('Update activity for URI ' . $condition['uri']);
+
+               dba::update('item-activity', $fields, $condition, true);
+
+               return true;
+       }
+
        /**
         * @brief Update existing item content entries
         *
@@ -1556,7 +1823,7 @@ class Item extends BaseObject
        {
                // We have to select only the fields from the "item-content" table
                $fields = [];
-               foreach (self::CONTENT_FIELDLIST as $field) {
+               foreach (array_merge(self::CONTENT_FIELDLIST, self::MIXED_CONTENT_FIELDLIST) as $field) {
                        if (isset($item[$field])) {
                                $fields[$field] = $item[$field];
                        }
@@ -1587,7 +1854,7 @@ class Item extends BaseObject
        public static function distribute($itemid, $signed_text = '')
        {
                $condition = ["`id` IN (SELECT `parent` FROM `item` WHERE `id` = ?)", $itemid];
-               $parent = dba::selectFirst('item', ['owner-id'], $condition);
+               $parent = self::selectFirst(['owner-id'], $condition);
                if (!DBM::is_result($parent)) {
                        return;
                }
@@ -1620,7 +1887,7 @@ class Item extends BaseObject
                $origin_uid = 0;
 
                if ($item['uri'] != $item['parent-uri']) {
-                       $parents = dba::select('item', ['uid', 'origin'], ["`uri` = ? AND `uid` != 0", $item['parent-uri']]);
+                       $parents = self::select(['uid', 'origin'], ["`uri` = ? AND `uid` != 0", $item['parent-uri']]);
                        while ($parent = dba::fetch($parents)) {
                                $users[$parent['uid']] = $parent['uid'];
                                if ($parent['origin'] && !$item['origin']) {
@@ -1699,9 +1966,9 @@ class Item extends BaseObject
         */
        public static function addShadow($itemid)
        {
-               $fields = ['uid', 'private', 'moderated', 'visible', 'deleted', 'network'];
+               $fields = ['uid', 'private', 'moderated', 'visible', 'deleted', 'network', 'uri'];
                $condition = ['id' => $itemid, 'parent' => [0, $itemid]];
-               $item = dba::selectFirst('item', $fields, $condition);
+               $item = self::selectFirst($fields, $condition);
 
                if (!DBM::is_result($item)) {
                        return;
@@ -1722,36 +1989,36 @@ class Item extends BaseObject
                        return;
                }
 
+               if (self::exists(['uri' => $item['uri'], 'uid' => 0])) {
+                       return;
+               }
+
                $item = self::selectFirst(self::ITEM_FIELDLIST, ['id' => $itemid]);
 
-               if (DBM::is_result($item) && ($item["allow_cid"] == '') && ($item["allow_gid"] == '') &&
-                       ($item["deny_cid"] == '') && ($item["deny_gid"] == '')) {
-
-                       if (!self::exists(['uri' => $item['uri'], 'uid' => 0])) {
-                               // Preparing public shadow (removing user specific data)
-                               $item['uid'] = 0;
-                               unset($item['id']);
-                               unset($item['parent']);
-                               unset($item['wall']);
-                               unset($item['mention']);
-                               unset($item['origin']);
-                               unset($item['starred']);
-                               if ($item['uri'] == $item['parent-uri']) {
-                                       $item['contact-id'] = $item['owner-id'];
-                               } else {
-                                       $item['contact-id'] = $item['author-id'];
-                               }
+               if (DBM::is_result($item)) {
+                       // Preparing public shadow (removing user specific data)
+                       $item['uid'] = 0;
+                       unset($item['id']);
+                       unset($item['parent']);
+                       unset($item['wall']);
+                       unset($item['mention']);
+                       unset($item['origin']);
+                       unset($item['starred']);
+                       if ($item['uri'] == $item['parent-uri']) {
+                               $item['contact-id'] = $item['owner-id'];
+                       } else {
+                               $item['contact-id'] = $item['author-id'];
+                       }
 
-                               if (in_array($item['type'], ["net-comment", "wall-comment"])) {
-                                       $item['type'] = 'remote-comment';
-                               } elseif ($item['type'] == 'wall') {
-                                       $item['type'] = 'remote';
-                               }
+                       if (in_array($item['type'], ["net-comment", "wall-comment"])) {
+                               $item['type'] = 'remote-comment';
+                       } elseif ($item['type'] == 'wall') {
+                               $item['type'] = 'remote';
+                       }
 
-                               $public_shadow = self::insert($item, false, false, true);
+                       $public_shadow = self::insert($item, false, false, true);
 
-                               logger("Stored public shadow for thread ".$itemid." under id ".$public_shadow, LOGGER_DEBUG);
-                       }
+                       logger("Stored public shadow for thread ".$itemid." under id ".$public_shadow, LOGGER_DEBUG);
                }
        }
 
@@ -1822,39 +2089,19 @@ class Item extends BaseObject
        }
 
         /**
-        * Adds a "lang" specification in a "postopts" element of given $arr,
-        * if possible and not already present.
+        * Adds a language specification in a "language" element of given $arr.
         * Expects "body" element to exist in $arr.
         */
-       private static function addLanguageInPostopts(&$item)
+       private static function addLanguageToItemArray(&$item)
        {
-               $postopts = "";
-
-               if (!empty($item['postopts'])) {
-                       if (strstr($item['postopts'], 'lang=')) {
-                               // do not override
-                               return;
-                       }
-                       $postopts = $item['postopts'];
-               }
-
                $naked_body = Text\BBCode::toPlaintext($item['body'], false);
 
-               $languages = (new Text_LanguageDetect())->detect($naked_body, 3);
+               $ld = new Text_LanguageDetect();
+               $ld->setNameMode(2);
+               $languages = $ld->detect($naked_body, 3);
 
-               if (sizeof($languages) > 0) {
-                       if ($postopts != '') {
-                               $postopts .= '&'; // arbitrary separator, to be reviewed
-                       }
-
-                       $postopts .= 'lang=';
-                       $sep = "";
-
-                       foreach ($languages as $language => $score) {
-                               $postopts .= $sep . $language . ";" . $score;
-                               $sep = ':';
-                       }
-                       $item['postopts'] = $postopts;
+               if (is_array($languages)) {
+                       $item['language'] = json_encode($languages);
                }
        }
 
@@ -2027,7 +2274,7 @@ class Item extends BaseObject
 
        public static function getGuidById($id)
        {
-               $item = dba::selectFirst('item', ['guid'], ['id' => $id]);
+               $item = self::selectFirst(['guid'], ['id' => $id]);
                if (DBM::is_result($item)) {
                        return $item['guid'];
                } else {
@@ -2061,8 +2308,6 @@ class Item extends BaseObject
                        $item = dba::fetch_first("SELECT `item`.`id`, `user`.`nickname` FROM `item`
                                INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
                                WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
-                                       AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
-                                       AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
                                        AND NOT `item`.`private` AND `item`.`wall`
                                        AND `item`.`guid` = ?", $guid);
                        if (DBM::is_result($item)) {
@@ -2091,7 +2336,7 @@ class Item extends BaseObject
                $community_page = (($user['page-flags'] == PAGE_COMMUNITY) ? true : false);
                $prvgroup = (($user['page-flags'] == PAGE_PRVGROUP) ? true : false);
 
-               $item = dba::selectFirst('item', [], ['id' => $item_id]);
+               $item = self::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id]);
                if (!DBM::is_result($item)) {
                        return;
                }
@@ -2364,17 +2609,8 @@ class Item extends BaseObject
 
        private static function hasPermissions($obj)
        {
-               return (
-                       (
-                               x($obj, 'allow_cid')
-                       ) || (
-                               x($obj, 'allow_gid')
-                       ) || (
-                               x($obj, 'deny_cid')
-                       ) || (
-                               x($obj, 'deny_gid')
-                       )
-               );
+               return !empty($obj['allow_cid']) || !empty($obj['allow_gid']) ||
+                       !empty($obj['deny_cid']) || !empty($obj['deny_gid']);
        }
 
        private static function samePermissions($obj1, $obj2)
@@ -2440,74 +2676,79 @@ class Item extends BaseObject
                        return;
                }
 
+               $condition = ["`uid` = ? AND NOT `deleted` AND `id` = `parent` AND `gravity` = ?",
+                       $uid, GRAVITY_PARENT];
+
                /*
                 * $expire_network_only = save your own wall posts
                 * and just expire conversations started by others
                 */
-               $expire_network_only = PConfig::get($uid,'expire', 'network_only');
-               $sql_extra = (intval($expire_network_only) ? " AND wall = 0 " : "");
+               $expire_network_only = PConfig::get($uid, 'expire', 'network_only', false);
+
+               if ($expire_network_only) {
+                       $condition[0] .= " AND NOT `wall`";
+               }
 
                if ($network != "") {
-                       $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
+                       $condition[0] .= " AND `network` = ?";
+                       $condition[] = $network;
 
                        /*
                         * There is an index "uid_network_received" but not "uid_network_created"
                         * This avoids the creation of another index just for one purpose.
                         * And it doesn't really matter wether to look at "received" or "created"
                         */
-                       $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
+                       $condition[0] .= " AND `received` < UTC_TIMESTAMP() - INTERVAL ? DAY";
+                       $condition[] = $days;
                } else {
-                       $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
+                       $condition[0] .= " AND `created` < UTC_TIMESTAMP() - INTERVAL ? DAY";
+                       $condition[] = $days;
                }
 
-               $r = q("SELECT `file`, `resource-id`, `starred`, `type`, `id` FROM `item`
-                       WHERE `uid` = %d $range
-                       AND `id` = `parent`
-                       $sql_extra
-                       AND `deleted` = 0",
-                       intval($uid),
-                       intval($days)
-               );
+               $items = self::select(['file', 'resource-id', 'starred', 'type', 'id'], $condition);
 
-               if (!DBM::is_result($r)) {
+               if (!DBM::is_result($items)) {
                        return;
                }
 
-               $expire_items = PConfig::get($uid, 'expire', 'items', 1);
+               $expire_items = PConfig::get($uid, 'expire', 'items', true);
 
                // Forcing expiring of items - but not notes and marked items
                if ($force) {
                        $expire_items = true;
                }
 
-               $expire_notes = PConfig::get($uid, 'expire', 'notes', 1);
-               $expire_starred = PConfig::get($uid, 'expire', 'starred', 1);
-               $expire_photos = PConfig::get($uid, 'expire', 'photos', 0);
-
-               logger('User '.$uid.': expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
+               $expire_notes = PConfig::get($uid, 'expire', 'notes', true);
+               $expire_starred = PConfig::get($uid, 'expire', 'starred', true);
+               $expire_photos = PConfig::get($uid, 'expire', 'photos', false);
 
-               foreach ($r as $item) {
+               $expired = 0;
 
+               while ($item = Item::fetch($items)) {
                        // don't expire filed items
 
-                       if (strpos($item['file'],'[') !== false) {
+                       if (strpos($item['file'], '[') !== false) {
                                continue;
                        }
 
                        // Only expire posts, not photos and photo comments
 
-                       if ($expire_photos == 0 && strlen($item['resource-id'])) {
+                       if (!$expire_photos && strlen($item['resource-id'])) {
                                continue;
-                       } elseif ($expire_starred == 0 && intval($item['starred'])) {
+                       } elseif (!$expire_starred && intval($item['starred'])) {
                                continue;
-                       } elseif ($expire_notes == 0 && $item['type'] == 'note') {
+                       } elseif (!$expire_notes && $item['type'] == 'note') {
                                continue;
-                       } elseif ($expire_items == 0 && $item['type'] != 'note') {
+                       } elseif (!$expire_items && $item['type'] != 'note') {
                                continue;
                        }
 
                        self::deleteById($item['id'], PRIORITY_LOW);
+
+                       ++$expired;
                }
+               dba::close($items);
+               logger('User ' . $uid . ": expired $expired items; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
        }
 
        public static function firstPostDate($uid, $wall = false)
@@ -2577,7 +2818,7 @@ class Item extends BaseObject
 
                logger('like: verb ' . $verb . ' item ' . $item_id);
 
-               $item = dba::selectFirst('item', [], ['`id` = ? OR `uri` = ?', $item_id, $item_id]);
+               $item = self::selectFirst(self::ITEM_FIELDLIST, ['`id` = ? OR `uri` = ?', $item_id, $item_id]);
                if (!DBM::is_result($item)) {
                        logger('like: unknown item ' . $item_id);
                        return false;
@@ -2632,7 +2873,7 @@ class Item extends BaseObject
                }
 
                $base_condition = ['verb' => $verbs, 'deleted' => false, 'gravity' => GRAVITY_ACTIVITY,
-                       'author-id' => $author_contact['id'], 'uid' => item['uid']];
+                       'author-id' => $author_contact['id'], 'uid' => $item['uid']];
 
                $condition = array_merge($base_condition, ['parent' => $item_id]);
                $like_item = self::selectFirst(['id', 'guid', 'verb'], $condition);
@@ -2754,7 +2995,7 @@ EOT;
                        'moderated', 'visible', 'starred', 'bookmark', 'contact-id',
                        'deleted', 'origin', 'forum_mode', 'mention', 'network', 'author-id', 'owner-id'];
                $condition = ["`id` = ? AND (`parent` = ? OR `parent` = 0)", $itemid, $itemid];
-               $item = dba::selectFirst('item', $fields, $condition);
+               $item = self::selectFirst($fields, $condition);
 
                if (!DBM::is_result($item)) {
                        return;
@@ -2776,7 +3017,7 @@ EOT;
                        'deleted', 'origin', 'forum_mode', 'network', 'author-id', 'owner-id'];
                $condition = ["`id` = ? AND (`parent` = ? OR `parent` = 0)", $itemid, $itemid];
 
-               $item = dba::selectFirst('item', $fields, $condition);
+               $item = self::selectFirst($fields, $condition);
                if (!DBM::is_result($item)) {
                        return;
                }