]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/Item.php
Add support for legacy $lang config in App->loadConfig
[friendica.git] / src / Model / Item.php
index ac53bb0220804fc756fa9a2ad5e4a006995886f9..d6635407dc75498412f59c651cda1b70d464fe77 100644 (file)
@@ -6,26 +6,22 @@
 
 namespace Friendica\Model;
 
+use dba;
 use Friendica\BaseObject;
 use Friendica\Content\Text;
 use Friendica\Core\Addon;
 use Friendica\Core\Config;
 use Friendica\Core\L10n;
+use Friendica\Core\Lock;
 use Friendica\Core\PConfig;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;
-use Friendica\Model\Contact;
-use Friendica\Model\Conversation;
-use Friendica\Model\Group;
-use Friendica\Model\Term;
 use Friendica\Object\Image;
 use Friendica\Protocol\Diaspora;
 use Friendica\Protocol\OStatus;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\XML;
-use Friendica\Util\Lock;
-use dba;
 use Text_LanguageDetect;
 
 require_once 'boot.php';
@@ -55,7 +51,7 @@ class Item extends BaseObject
                        'attach', 'tag', 'bookmark', 'deleted', 'extid',
                        'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
                        'author-id', 'author-link', 'owner-link', 'contact-uid',
-                       'signed_text', 'signature', 'signer'];
+                       'signed_text', 'signature', 'signer', 'network'];
 
        // Field list for "item-content" table that is mixed with the item table
        const MIXED_CONTENT_FIELDLIST = ['title', 'content-warning', 'body', 'location',
@@ -67,7 +63,7 @@ class Item extends BaseObject
 
        // 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',
@@ -78,6 +74,53 @@ class Item extends BaseObject
                        'author-id', 'author-link', 'author-name', 'author-avatar',
                        'owner-id', 'owner-link', 'owner-name', 'owner-avatar'];
 
+       // Never reorder or remove entries from this list. Just add new ones at the end, if needed.
+       // The item-activity table only stores the index and needs this array to know the matching activity.
+       const ACTIVITIES = [ACTIVITY_LIKE, ACTIVITY_DISLIKE, ACTIVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE];
+
+       private static $legacy_mode = null;
+
+       public static function isLegacyMode()
+       {
+               if (is_null(self::$legacy_mode)) {
+                       self::$legacy_mode = (Config::get("system", "post_update_version") < 1276);
+               }
+
+               return self::$legacy_mode;
+       }
+
+       /**
+        * @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 (is_null($index) || !array_key_exists($index, self::ACTIVITIES)) {
+                       return '';
+               }
+
+               return self::ACTIVITIES[$index];
+       }
+
        /**
         * @brief Fetch a single item row
         *
@@ -88,14 +131,12 @@ class Item extends BaseObject
        {
                $row = dba::fetch($stmt);
 
-               // 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['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'])) {
@@ -117,22 +158,69 @@ class Item extends BaseObject
                        }
                }
 
-               // Build the tag string out of the term entries
-               if (isset($row['id']) && array_key_exists('tag', $row)) {
-                       $row['tag'] = Term::tagTextFromItemId($row['id']);
+               // We can always comment on posts from these networks
+               if (array_key_exists('writable', $row) &&
+                       in_array($row['internal-network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
+                       $row['writable'] = true;
                }
 
-               // Build the file string out of the term entries
-               if (isset($row['id']) && array_key_exists('file', $row)) {
-                       $row['file'] = Term::fileTextFromItemId($row['id']);
+               // ---------------------- Transform item content data ----------------------
+
+               // Fetch data from the item-content table whenever there is content there
+               if (self::isLegacyMode()) {
+                       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]);
+                       }
                }
 
-               // 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])) {
-                       $row['writable'] = true;
+               if (!empty($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 (array_key_exists('verb', $row) && in_array($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'] = '';
+                       }
+               }
+
+               if (!array_key_exists('verb', $row) || in_array($row['verb'], ['', ACTIVITY_POST, ACTIVITY_SHARE])) {
+                       // Build the tag string out of the term entries
+                       if (array_key_exists('tag', $row) && empty($row['tag'])) {
+                               $row['tag'] = Term::tagTextFromItemId($row['internal-iid']);
+                       }
+
+                       // Build the file string out of the term entries
+                       if (array_key_exists('file', $row) && empty($row['file'])) {
+                               $row['file'] = Term::fileTextFromItemId($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;
        }
 
@@ -417,7 +505,11 @@ 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', 'activity' => 'internal-activity'];
 
                $fields['item-content'] = array_merge(self::CONTENT_FIELDLIST, self::MIXED_CONTENT_FIELDLIST);
 
@@ -489,20 +581,20 @@ class Item extends BaseObject
                        $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)
+                               OR `contact`.`self` OR `item`.`gravity` != %d 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));
+                               CONTACT_IS_SHARING, CONTACT_IS_FRIEND, GRAVITY_PARENT, intval($uid));
                } else {
                        if (strpos($sql_commands, "`contact`.") !== false) {
-                               $joins .= "STRAIGHT_JOIN `contact` ON `contact`.`id` = $master_table.`contact-id`";
+                               $joins .= "LEFT 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`";
+                               $joins .= " LEFT 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`";
+                               $joins .= " LEFT JOIN `contact` AS `owner` ON `owner`.`id` = $master_table.`owner-id`";
                        }
                }
 
@@ -522,6 +614,10 @@ 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) {
                        $joins .= " LEFT JOIN `item-content` ON `item-content`.`id` = `item`.`icid`";
                }
@@ -547,22 +643,23 @@ class Item extends BaseObject
         */
        private static function constructSelectFields($fields, $selected)
        {
-               // To be able to fetch the tags we need the item id
-               if (in_array('tag', $selected) && !in_array('id', $selected)) {
-                       $selected[] = 'id';
+               if (!empty($selected)) {
+                       $selected[] = 'internal-iid';
+                       $selected[] = 'internal-iaid';
+                       $selected[] = 'internal-icid';
+                       $selected[] = 'internal-network';
                }
 
-               // To be able to fetch the files we need the item id
-               if (in_array('file', $selected) && !in_array('id', $selected)) {
-                       $selected[] = 'id';
+               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::MIXED_CONTENT_FIELDLIST)) {
-                                               $selection[] = "`item`.`".$select."` AS `item-" . $select . "`";
+                                       if (self::isLegacyMode() && in_array($select, self::MIXED_CONTENT_FIELDLIST)) {
+                                               $selection[] = "`item`.`".$select."` AS `internal-item-" . $select . "`";
                                        }
                                        if (is_int($field)) {
                                                $selection[] = "`" . $table . "`.`" . $select . "`";
@@ -601,6 +698,19 @@ class Item extends BaseObject
                return $query;
        }
 
+       /**
+        * @brief Generate a server unique item hash for linking between the item tables
+        *
+        * @param string $uri     Item URI
+        * @param date   $created Item creation date
+        *
+        * @return string the item hash
+        */
+       private static function itemHash($uri, $created)
+       {
+               return round(strtotime($created) / 100) . hash('ripemd128', $uri);
+       }
+
        /**
         * @brief Update existing item entries
         *
@@ -626,26 +736,37 @@ 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', 'icid'], $condition);
+               $items = dba::select('item', ['id', 'origin', 'uri', 'created', 'uri-hash', 'iaid', 'icid', 'tag', 'file'], $condition);
 
                $content_fields = [];
                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 (in_array($field, self::CONTENT_FIELDLIST) || !self::isLegacyMode()) {
+                                       unset($fields[$field]);
+                               } else {
+                                       $fields[$field] = null;
+                               }
+                       }
+               }
+
+               $author_owner_fields = ['author-name', 'author-avatar', 'author-link', 'owner-name', 'owner-avatar', 'owner-link'];
+               foreach ($author_owner_fields as $field) {
+                       if (array_key_exists($field, $fields)) {
+                               $fields[$field] = null;
                        }
                }
 
                if (array_key_exists('tag', $fields)) {
                        $tags = $fields['tag'];
-                       unset($fields['tag']);
+                       $fields['tag'] = null;
                } else {
                        $tags = '';
                }
 
                if (array_key_exists('file', $fields)) {
                        $files = $fields['file'];
-                       unset($fields['file']);
+                       $fields['file'] = null;
                } else {
                        $files = '';
                }
@@ -664,31 +785,94 @@ class Item extends BaseObject
                $rows = dba::affected_rows();
 
                while ($item = dba::fetch($items)) {
-                       if (!empty($item['plink'])) {
-                               $content_fields['plink'] =  $item['plink'];
-                       }
-                       self::updateContent($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] = '';
+                       // This part here can safely be removed when the legacy fields in the item had been removed
+                       if (empty($item['uri-hash']) && !empty($item['uri']) && !empty($item['created'])) {
+
+                               // Fetch the uri-hash from an existing item entry if there is one
+                               $item_condition = ["`uri` = ? AND `uri-hash` != ''", $item['uri']];
+                               $existing = dba::selectfirst('item', ['uri-hash'], $item_condition);
+                               if (DBM::is_result($existing)) {
+                                       $item['uri-hash'] = $existing['uri-hash'];
+                               } else {
+                                       $item['uri-hash'] = self::itemHash($item['uri'], $item['created']);
+                               }
+
+                               dba::update('item', ['uri-hash' => $item['uri-hash']], ['id' => $item['id']]);
+                               dba::update('item-activity', ['uri-hash' => $item['uri-hash']], ["`uri` = ? AND `uri-hash` = ''", $item['uri']]);
+                               dba::update('item-content', ['uri-plink-hash' => $item['uri-hash']], ["`uri` = ? AND `uri-plink-hash` = ''", $item['uri']]);
+                       }
+
+                       if (!empty($item['iaid']) || (!empty($content_fields['verb']) && (self::activityToIndex($content_fields['verb']) >= 0))) {
+                               if (!empty($item['iaid'])) {
+                                       $update_condition = ['id' => $item['iaid']];
+                               } else {
+                                       $update_condition = ['uri-hash' => $item['uri-hash']];
+                               }
+                               self::updateActivity($content_fields, $update_condition);
+
+                               if (empty($item['iaid'])) {
+                                       $item_activity = dba::selectFirst('item-activity', ['id'], ['uri-hash' => $item['uri-hash']]);
+                                       if (DBM::is_result($item_activity)) {
+                                               $item_fields = ['iaid' => $item_activity['id'], 'icid' => null];
+                                               foreach (self::MIXED_CONTENT_FIELDLIST as $field) {
+                                                       if (self::isLegacyMode()) {
+                                                               $item_fields[$field] = null;
+                                                       } else {
+                                                               unset($item_fields[$field]);
+                                                       }
+                                               }
+                                               dba::update('item', $item_fields, ['id' => $item['id']]);
+
+                                               if (!empty($item['icid']) && !dba::exists('item', ['icid' => $item['icid']])) {
+                                                       dba::delete('item-content', ['id' => $item['icid']]);
+                                               }
+                                       }
+                               } elseif (!empty($item['icid'])) {
+                                       dba::update('item', ['icid' => null], ['id' => $item['id']]);
+
+                                       if (!dba::exists('item', ['icid' => $item['icid']])) {
+                                               dba::delete('item-content', ['id' => $item['icid']]);
+                                       }
+                               }
+                       } else {
+                               if (!empty($item['icid'])) {
+                                       $update_condition = ['id' => $item['icid']];
+                               } else {
+                                       $update_condition = ['uri-plink-hash' => $item['uri-hash']];
+                               }
+                               self::updateContent($content_fields, $update_condition);
+
+                               if (empty($item['icid'])) {
+                                       $item_content = dba::selectFirst('item-content', [], ['uri-plink-hash' => $item['uri-hash']]);
+                                       if (DBM::is_result($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])) {
+                                                               if (self::isLegacyMode()) {
+                                                                       $item_fields[$field] = null;
+                                                               } else {
+                                                                       unset($item_fields[$field]);
+                                                               }
+                                                       }
                                                }
+                                               dba::update('item', $item_fields, ['id' => $item['id']]);
                                        }
-                                       dba::update('item', $item_fields, ['id' => $item['id']]);
                                }
                        }
 
                        if (!empty($tags)) {
                                Term::insertFromTagFieldByItemId($item['id'], $tags);
+                               if (!empty($item['tag'])) {
+                                       dba::update('item', ['tag' => ''], ['id' => $item['id']]);
+                               }
                        }
 
                        if (!empty($files)) {
                                Term::insertFromFileFieldByItemId($item['id'], $files);
+                               if (!empty($item['file'])) {
+                                       dba::update('item', ['file' => ''], ['id' => $item['id']]);
+                               }
                        }
 
                        self::updateThread($item['id']);
@@ -813,7 +997,9 @@ class Item extends BaseObject
                // If item has attachments, drop them
                foreach (explode(", ", $item['attach']) as $attach) {
                        preg_match("|attach/(\d+)|", $attach, $matches);
-                       dba::delete('attach', ['id' => $matches[1], 'uid' => $item['uid']]);
+                       if (is_array($matches) && count($matches) > 1) {
+                               dba::delete('attach', ['id' => $matches[1], 'uid' => $item['uid']]);
+                       }
                }
 
                // Delete tags that had been attached to other items
@@ -902,10 +1088,8 @@ class Item extends BaseObject
 
        private static function guid($item, $notify)
        {
-               $guid = notags(trim($item['guid']));
-
-               if (!empty($guid)) {
-                       return $guid;
+               if (!empty($item['guid'])) {
+                       return notags(trim($item['guid']));
                }
 
                if ($notify) {
@@ -949,7 +1133,7 @@ class Item extends BaseObject
                } elseif (!empty($item['uri'])) {
                        $guid = self::guidFromUri($item['uri'], $prefix_host);
                } else {
-                       $guid = get_guid(32, hash('crc32', $prefix_host));
+                       $guid = System::createGUID(32, hash('crc32', $prefix_host));
                }
 
                return $guid;
@@ -1102,6 +1286,13 @@ class Item extends BaseObject
                        }
                }
 
+               // Ensure to always have the same creation date.
+               $existing = dba::selectfirst('item', ['created', 'uri-hash'], ['uri' => $item['uri']]);
+               if (DBM::is_result($existing)) {
+                       $item['created'] = $existing['created'];
+                       $item['uri-hash'] = $existing['uri-hash'];
+               }
+
                self::addLanguageToItemArray($item);
 
                $item['wall']          = intval(defaults($item, 'wall', 0));
@@ -1146,6 +1337,9 @@ class Item extends BaseObject
                $item['inform']        = trim(defaults($item, 'inform', ''));
                $item['file']          = trim(defaults($item, 'file', ''));
 
+               // Unique identifier to be linked against item-activities and item-content
+               $item['uri-hash']      = defaults($item, 'uri-hash', self::itemHash($item['uri'], $item['created']));
+
                // When there is no content then we don't post it
                if ($item['body'].$item['title'] == '') {
                        logger('No body, no title.');
@@ -1162,10 +1356,6 @@ class Item extends BaseObject
                        $item['edited'] = DateTimeFormat::utcNow();
                }
 
-               if (($item['author-link'] == "") && ($item['owner-link'] == "")) {
-                       logger("Both author-link and owner-link are empty. Called by: " . System::callstack(), LOGGER_DEBUG);
-               }
-
                $item['plink'] = defaults($item, 'plink', System::baseUrl() . '/display/' . urlencode($item['guid']));
 
                // The contact-id should be set before "self::insert" was called - but there seems to be issues sometimes
@@ -1203,12 +1393,7 @@ class Item extends BaseObject
                if ($item['network'] == NETWORK_PHANTOM) {
                        logger('Missing network. Called by: '.System::callstack(), LOGGER_DEBUG);
 
-                       $contact = Contact::getDetailsByURL($item['author-link'], $item['uid']);
-                       if (!empty($contact['network'])) {
-                               $item['network'] = $contact["network"];
-                       } else {
-                               $item['network'] = NETWORK_DFRN;
-                       }
+                       $item['network'] = NETWORK_DFRN;
                        logger("Set network to " . $item["network"] . " for " . $item["uri"], LOGGER_DEBUG);
                }
 
@@ -1379,7 +1564,11 @@ class Item extends BaseObject
                put_item_in_cache($item);
 
                if ($notify) {
+                       $item['edit'] = false;
+                       $item['parent'] = $parent_id;
                        Addon::callHooks('post_local', $item);
+                       unset($item['edit']);
+                       unset($item['parent']);
                } else {
                        Addon::callHooks('post_remote', $item);
                }
@@ -1422,7 +1611,9 @@ class Item extends BaseObject
                }
 
                // 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);
@@ -1577,6 +1768,52 @@ 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' => $item['uri-hash']];
+
+               // 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.
+               $locked = Lock::acquire('item_insert_activity');
+               if (!$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-hash' => $item['uri-hash']]);
+               if (DBM::is_result($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.
+                       logger('Could not insert activity for URI ' . $item['uri'] . ' - should not happen');
+                       return false;
+               }
+               if ($locked) {
+                       Lock::release('item_insert_activity');
+               }
+               return true;
+       }
+
        /**
         * @brief Insert a new item content entry
         *
@@ -1584,8 +1821,7 @@ class Item extends BaseObject
         */
        private static function insertContent(&$item)
        {
-               $fields = ['uri' => $item['uri'], 'plink' => $item['plink'],
-                       'uri-plink-hash' => hash('sha1', $item['plink']).hash('sha1', $item['uri'])];
+               $fields = ['uri' => $item['uri'], 'uri-plink-hash' => $item['uri-hash']];
 
                foreach (array_merge(self::CONTENT_FIELDLIST, self::MIXED_CONTENT_FIELDLIST) as $field) {
                        if (isset($item[$field])) {
@@ -1595,13 +1831,13 @@ class Item extends BaseObject
                }
 
                // To avoid timing problems, we are using locks.
-               $locked = Lock::set('item_insert_content');
+               $locked = Lock::acquire('item_insert_content');
                if (!$locked) {
                        logger("Couldn't acquire lock for URI " . $item['uri'] . " - proceeding anyway.");
                }
 
                // Do we already have this content?
-               $item_content = dba::selectFirst('item-content', ['id'], ['uri' => $item['uri']]);
+               $item_content = dba::selectFirst('item-content', ['id'], ['uri-plink-hash' => $item['uri-hash']]);
                if (DBM::is_result($item_content)) {
                        $item['icid'] = $item_content['id'];
                        logger('Fetched content for URI ' . $item['uri'] . ' (' . $item['icid'] . ')');
@@ -1609,30 +1845,38 @@ class Item extends BaseObject
                        $item['icid'] = dba::lastInsertId();
                        logger('Inserted content for URI ' . $item['uri'] . ' (' . $item['icid'] . ')');
                } else {
-                       // By setting the ICID value through the worker we should avoid timing problems.
-                       // When the locking works, this shouldn't be needed. But better be prepared.
-                       Worker::add(PRIORITY_HIGH, 'SetItemContentID', $item['uri']);
-                       logger('Could not insert content for URI ' . $item['uri'] . ' - trying asynchronously');
+                       // This shouldn't happen.
+                       logger('Could not insert content for URI ' . $item['uri'] . ' - should not happen');
                }
                if ($locked) {
-                       Lock::remove('item_insert_content');
+                       Lock::release('item_insert_content');
                }
        }
 
        /**
-        * @brief Set the item content id for a given URI
+        * @brief Update existing item content entries
         *
-        * @param string $uri The item URI
+        * @param array $item The item fields that are to be changed
+        * @param array $condition The condition for finding the item content entries
         */
-       public static function setICIDforURI($uri)
+       private static function updateActivity($item, $condition)
        {
-               $item_content = dba::selectFirst('item-content', ['id'], ['uri' => $uri]);
-               if (DBM::is_result($item_content)) {
-                       dba::update('item', ['icid' => $item_content['id']], ['icid' => 0, 'uri' => $uri]);
-                       logger('Asynchronously set item content id for URI ' . $uri . ' (' . $item_content['id'] . ') - Affected: '. (int)dba::affected_rows());
-               } else {
-                       logger('No item-content found for URI ' . $uri);
+               if (empty($item['verb'])) {
+                       return false;
+               }
+               $activity_index = self::activityToIndex($item['verb']);
+
+               if ($activity_index < 0) {
+                       return false;
                }
+
+               $fields = ['activity' => $activity_index];
+
+               logger('Update activity for ' . json_encode($condition));
+
+               dba::update('item-activity', $fields, $condition, true);
+
+               return true;
        }
 
        /**
@@ -1652,17 +1896,12 @@ class Item extends BaseObject
                }
 
                if (empty($fields)) {
-                       return;
-               }
-
-               if (!empty($item['plink'])) {
-                       $fields['uri-plink-hash'] = hash('sha1', $item['plink']) . hash('sha1', $condition['uri']);
-               } else {
-                       // Ensure that we don't delete the plink
-                       unset($fields['plink']);
+                       // when there are no fields at all, just use the condition
+                       // This is to ensure that we always store content.
+                       $fields = $condition;
                }
 
-               logger('Update content for URI ' . $condition['uri']);
+               logger('Update content for ' . json_encode($condition));
 
                dba::update('item-content', $fields, $condition, true);
        }
@@ -1690,6 +1929,8 @@ class Item extends BaseObject
                        return;
                }
 
+               $origin = $item['origin'];
+
                unset($item['id']);
                unset($item['parent']);
                unset($item['mention']);
@@ -1712,7 +1953,7 @@ class Item extends BaseObject
                        $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'] && !$item['origin']) {
+                               if ($parent['origin'] && !$origin) {
                                        $origin_uid = $parent['uid'];
                                }
                        }
@@ -1966,7 +2207,7 @@ class Item extends BaseObject
        public static function newURI($uid, $guid = "")
        {
                if ($guid == "") {
-                       $guid = get_guid(32);
+                       $guid = System::createGUID(32);
                }
 
                $hostname = self::getApp()->get_hostname();
@@ -2001,7 +2242,7 @@ class Item extends BaseObject
                        Contact::unmarkForArchival($contact);
                }
 
-               $update = (!$arr['private'] && (($arr["author-link"] === $arr["owner-link"]) || ($arr["parent-uri"] === $arr["uri"])));
+               $update = (!$arr['private'] && ((defaults($arr, 'author-link', '') === defaults($arr, 'owner-link', '')) || ($arr["parent-uri"] === $arr["uri"])));
 
                // Is it a forum? Then we don't care about the rules from above
                if (!$update && ($arr["network"] == NETWORK_DFRN) && ($arr["parent-uri"] === $arr["uri"])) {
@@ -2243,7 +2484,7 @@ class Item extends BaseObject
                }
 
                // Prevent the forwarding of posts that are forwarded
-               if ($datarray["extid"] == NETWORK_DFRN) {
+               if (!empty($datarray["extid"]) && ($datarray["extid"] == NETWORK_DFRN)) {
                        logger('Already forwarded', LOGGER_DEBUG);
                        return false;
                }
@@ -2290,7 +2531,7 @@ class Item extends BaseObject
                        }
 
                        if ($contact['network'] != NETWORK_FEED) {
-                               $datarray["guid"] = get_guid(32);
+                               $datarray["guid"] = System::createGUID(32);
                                unset($datarray["plink"]);
                                $datarray["uri"] = self::newURI($contact['uid'], $datarray["guid"]);
                                $datarray["parent-uri"] = $datarray["uri"];
@@ -2607,27 +2848,22 @@ class Item extends BaseObject
                switch ($verb) {
                        case 'like':
                        case 'unlike':
-                               $bodyverb = L10n::t('%1$s likes %2$s\'s %3$s');
                                $activity = ACTIVITY_LIKE;
                                break;
                        case 'dislike':
                        case 'undislike':
-                               $bodyverb = L10n::t('%1$s doesn\'t like %2$s\'s %3$s');
                                $activity = ACTIVITY_DISLIKE;
                                break;
                        case 'attendyes':
                        case 'unattendyes':
-                               $bodyverb = L10n::t('%1$s is attending %2$s\'s %3$s');
                                $activity = ACTIVITY_ATTEND;
                                break;
                        case 'attendno':
                        case 'unattendno':
-                               $bodyverb = L10n::t('%1$s is not attending %2$s\'s %3$s');
                                $activity = ACTIVITY_ATTENDNO;
                                break;
                        case 'attendmaybe':
                        case 'unattendmaybe':
-                               $bodyverb = L10n::t('%1$s may attend %2$s\'s %3$s');
                                $activity = ACTIVITY_ATTENDMAYBE;
                                break;
                        default:
@@ -2646,6 +2882,8 @@ class Item extends BaseObject
                        return false;
                }
 
+               $item_uri = $item['uri'];
+
                $uid = $item['uid'];
                if (($uid == 0) && local_user()) {
                        $uid = local_user();
@@ -2666,7 +2904,7 @@ class Item extends BaseObject
                // Retrieve the current logged in user's public contact
                $author_id = public_contact();
 
-               $author_contact = dba::selectFirst('contact', [], ['id' => $author_id]);
+               $author_contact = dba::selectFirst('contact', ['url'], ['id' => $author_id]);
                if (!DBM::is_result($author_contact)) {
                        logger('like: unknown author ' . $author_id);
                        return false;
@@ -2690,26 +2928,21 @@ class Item extends BaseObject
                // we need to eradicate your first choice.
                if ($event_verb_flag) {
                        $verbs = [ACTIVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE];
+
+                       // Translate to the index based activity index
+                       $activities = [];
+                       foreach ($verbs as $verb) {
+                               $activities[] = self::activityToIndex($verb);
+                       }
                } else {
-                       $verbs = $activity;
+                       $activities = self::activityToIndex($activity);
                }
 
-               $base_condition = ['verb' => $verbs, 'deleted' => false, 'gravity' => GRAVITY_ACTIVITY,
-                       'author-id' => $author_contact['id'], 'uid' => $item['uid']];
+               $condition = ['activity' => $activities, 'deleted' => false, 'gravity' => GRAVITY_ACTIVITY,
+                       'author-id' => $author_id, 'uid' => $item['uid'], 'thr-parent' => $item_uri];
 
-               $condition = array_merge($base_condition, ['parent' => $item_id]);
                $like_item = self::selectFirst(['id', 'guid', 'verb'], $condition);
 
-               if (!DBM::is_result($like_item)) {
-                       $condition = array_merge($base_condition, ['parent-uri' => $item_id]);
-                       $like_item = self::selectFirst(['id', 'guid', 'verb'], $condition);
-               }
-
-               if (!DBM::is_result($like_item)) {
-                       $condition = array_merge($base_condition, ['thr-parent' => $item_id]);
-                       $like_item = self::selectFirst(['id', 'guid', 'verb'], $condition);
-               }
-
                // If it exists, mark it as deleted
                if (DBM::is_result($like_item)) {
                        // Already voted, undo it
@@ -2718,12 +2951,9 @@ class Item extends BaseObject
                        dba::update('item', $fields, ['id' => $like_item['id']]);
 
                        // Clean up the Diaspora signatures for this like
-                       // Go ahead and do it even if Diaspora support is disabled. We still want to clean up
-                       // if it had been enabled in the past
                        dba::delete('sign', ['iid' => $like_item['id']]);
 
-                       $like_item_id = $like_item['id'];
-                       Worker::add(PRIORITY_HIGH, "Notifier", "like", $like_item_id);
+                       Worker::add(PRIORITY_HIGH, "Notifier", "like", $like_item['id']);
 
                        if (!$event_verb_flag || $like_item['verb'] == $activity) {
                                return true;
@@ -2735,55 +2965,26 @@ class Item extends BaseObject
                        return true;
                }
 
-               // Else or if event verb different from existing row, create a new item row
-               $post_type = (($item['resource-id']) ? L10n::t('photo') : L10n::t('status'));
-               if ($item['object-type'] === ACTIVITY_OBJ_EVENT) {
-                       $post_type = L10n::t('event');
-               }
                $objtype = $item['resource-id'] ? ACTIVITY_OBJ_IMAGE : ACTIVITY_OBJ_NOTE ;
-               $link = xmlify('<link rel="alternate" type="text/html" href="' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . '" />' . "\n") ;
-               $body = $item['body'];
-
-               $obj = <<< EOT
-
-               <object>
-                       <type>$objtype</type>
-                       <local>1</local>
-                       <id>{$item['uri']}</id>
-                       <link>$link</link>
-                       <title></title>
-                       <content>$body</content>
-               </object>
-EOT;
-
-               $ulink = '[url=' . $author_contact['url'] . ']' . $author_contact['name'] . '[/url]';
-               $alink = '[url=' . $item['author-link'] . ']' . $item['author-name'] . '[/url]';
-               $plink = '[url=' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . ']' . $post_type . '[/url]';
 
                $new_item = [
-                       'guid'          => get_guid(32),
+                       'guid'          => System::createGUID(32),
                        'uri'           => self::newURI($item['uid']),
                        'uid'           => $item['uid'],
                        'contact-id'    => $item_contact_id,
                        'type'          => 'activity',
                        'wall'          => $item['wall'],
                        'origin'        => 1,
+                       'network'       => NETWORK_DFRN,
                        'gravity'       => GRAVITY_ACTIVITY,
                        'parent'        => $item['id'],
                        'parent-uri'    => $item['uri'],
                        'thr-parent'    => $item['uri'],
                        'owner-id'      => $item['owner-id'],
-                       'owner-name'    => $item['owner-name'],
-                       'owner-link'    => $item['owner-link'],
-                       'owner-avatar'  => $item['owner-avatar'],
-                       'author-id'     => $author_contact['id'],
-                       'author-name'   => $author_contact['name'],
-                       'author-link'   => $author_contact['url'],
-                       'author-avatar' => $author_contact['thumb'],
-                       'body'          => sprintf($bodyverb, $ulink, $alink, $plink),
+                       'author-id'     => $author_id,
+                       'body'          => $activity,
                        'verb'          => $activity,
                        'object-type'   => $objtype,
-                       'object'        => $obj,
                        'allow_cid'     => $item['allow_cid'],
                        'allow_gid'     => $item['allow_gid'],
                        'deny_cid'      => $item['deny_cid'],