294 lines
8.5 KiB
PHP
294 lines
8.5 KiB
PHP
<?php
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/**
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* @file src/Model/Item.php
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*/
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namespace Friendica\Model;
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use Friendica\Core\Worker;
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use Friendica\Model\Term;
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use Friendica\Model\Contact;
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use Friendica\Database\DBM;
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use dba;
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require_once 'include/tags.php';
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require_once 'include/threads.php';
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require_once 'include/items.php';
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class Item
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{
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/**
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* @brief Update existing item entries
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*
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* @param array $fields The fields that are to be changed
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* @param array $condition The condition for finding the item entries
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*
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* In the future we may have to change permissions as well.
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* Then we had to add the user id as third parameter.
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*
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* A return value of "0" doesn't mean an error - but that 0 rows had been changed.
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*
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* @return integer|boolean number of affected rows - or "false" if there was an error
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*/
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public static function update(array $fields, array $condition)
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{
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if (empty($condition) || empty($fields)) {
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return false;
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}
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$success = dba::update('item', $fields, $condition);
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if (!$success) {
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return false;
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}
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$rows = dba::affected_rows();
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// We cannot simply expand the condition to check for origin entries
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// The condition needn't to be a simple array but could be a complex condition.
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$items = dba::select('item', ['id', 'origin'], $condition);
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while ($item = dba::fetch($items)) {
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// We only need to notfiy others when it is an original entry from us
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if (!$item['origin']) {
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continue;
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}
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create_tags_from_item($item['id']);
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Term::createFromItem($item['id']);
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update_thread($item['id']);
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Worker::add(PRIORITY_HIGH, "Notifier", 'edit_post', $item['id']);
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}
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return $rows;
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}
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/**
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* @brief Delete an item and notify others about it - if it was ours
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*
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* @param integer $item_id Item ID that should be delete
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*
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* @return $boolean success
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*/
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public static function delete($item_id, $priority = PRIORITY_HIGH)
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{
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// locate item to be deleted
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$fields = ['id', 'uid', 'parent', 'parent-uri', 'origin', 'deleted', 'file', 'resource-id', 'event-id', 'attach'];
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$item = dba::selectFirst('item', $fields, ['id' => $item_id]);
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if (!DBM::is_result($item)) {
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return false;
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}
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if ($item['deleted']) {
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return false;
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}
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$parent = dba::selectFirst('item', ['origin'], ['id' => $item['parent']]);
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if (!DBM::is_result($parent)) {
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$parent = ['origin' => false];
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}
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logger('delete item: ' . $item['id'], LOGGER_DEBUG);
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// clean up categories and tags so they don't end up as orphans
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$matches = false;
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$cnt = preg_match_all('/<(.*?)>/', $item['file'], $matches, PREG_SET_ORDER);
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if ($cnt) {
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foreach ($matches as $mtch) {
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file_tag_unsave_file($item['uid'], $item['id'], $mtch[1],true);
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}
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}
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$matches = false;
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$cnt = preg_match_all('/\[(.*?)\]/', $item['file'], $matches, PREG_SET_ORDER);
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if ($cnt) {
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foreach ($matches as $mtch) {
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file_tag_unsave_file($item['uid'], $item['id'], $mtch[1],false);
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}
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}
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/*
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* If item is a link to a photo resource, nuke all the associated photos
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* (visitors will not have photo resources)
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* This only applies to photos uploaded from the photos page. Photos inserted into a post do not
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* generate a resource-id and therefore aren't intimately linked to the item.
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*/
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if (strlen($item['resource-id'])) {
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dba::delete('photo', ['resource-id' => $item['resource-id'], 'uid' => $item['uid']]);
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}
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// If item is a link to an event, nuke the event record.
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if (intval($item['event-id'])) {
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dba::delete('event', ['id' => $item['event-id'], 'uid' => $item['uid']]);
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}
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// If item has attachments, drop them
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foreach (explode(", ", $item['attach']) as $attach) {
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preg_match("|attach/(\d+)|", $attach, $matches);
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dba::delete('attach', ['id' => $matches[1], 'uid' => $item['uid']]);
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}
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// Set the item to "deleted"
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dba::update('item', ['deleted' => true, 'title' => '', 'body' => '',
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'edited' => datetime_convert(), 'changed' => datetime_convert()],
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['id' => $item['id']]);
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create_tags_from_item($item['id']);
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Term::createFromItem($item['id']);
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delete_thread($item['id'], $item['parent-uri']);
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// If it's the parent of a comment thread, kill all the kids
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if ($item['id'] == $item['parent']) {
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$items = dba::select('item', ['id'], ['parent' => $item['parent']]);
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while ($row = dba::fetch($items)) {
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self::delete($row['id'], $priority);
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}
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}
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// send the notification upstream/downstream
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if ($item['origin'] || $parent['origin']) {
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Worker::add(['priority' => $priority, 'dont_fork' => true], "Notifier", "drop", intval($item['id']));
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}
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return true;
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}
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/**
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* @brief Add a shadow entry for a given item id that is a thread starter
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*
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* We store every public item entry additionally with the user id "0".
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* This is used for the community page and for the search.
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* It is planned that in the future we will store public item entries only once.
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*
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* @param integer $itemid Item ID that should be added
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*/
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public static function addShadow($itemid)
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{
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$fields = ['uid', 'wall', 'private', 'moderated', 'visible', 'contact-id', 'deleted', 'network', 'author-id', 'owner-id'];
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$condition = ["`id` = ? AND (`parent` = ? OR `parent` = 0)", $itemid, $itemid];
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$item = dba::selectFirst('item', $fields, $condition);
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if (!DBM::is_result($item)) {
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return;
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}
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// is it already a copy?
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if (($itemid == 0) || ($item['uid'] == 0)) {
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return;
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}
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// Is it a visible public post?
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if (!$item["visible"] || $item["deleted"] || $item["moderated"] || $item["private"]) {
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return;
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}
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// is it an entry from a connector? Only add an entry for natively connected networks
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if (!in_array($item["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
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return;
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}
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// Is the public contact configured as hidden?
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if (Contact::isHidden($item["owner-id"]) || Contact::isHidden($item["author-id"])) {
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return;
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}
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// Only do these checks if the post isn't a wall post
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if (!$item["wall"]) {
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// Check, if hide-friends is activated - then don't do a shadow entry
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if (dba::exists('profile', ['is-default' => true, 'uid' => $item['uid'], 'hide-friends' => true])) {
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return;
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}
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// Check if the contact is hidden or blocked
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if (!dba::exists('contact', ['hidden' => false, 'blocked' => false, 'id' => $item['contact-id']])) {
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return;
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}
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}
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// Only add a shadow, if the profile isn't hidden
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if (dba::exists('user', ['uid' => $item['uid'], 'hidewall' => true])) {
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return;
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}
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$item = dba::selectFirst('item', [], ['id' => $itemid]);
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if (DBM::is_result($item) && ($item["allow_cid"] == '') && ($item["allow_gid"] == '') &&
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($item["deny_cid"] == '') && ($item["deny_gid"] == '')) {
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if (!dba::exists('item', ['uri' => $item['uri'], 'uid' => 0])) {
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// Preparing public shadow (removing user specific data)
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unset($item['id']);
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$item['uid'] = 0;
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$item['origin'] = 0;
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$item['wall'] = 0;
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$item['contact-id'] = Contact::getIdForURL($item['author-link'], 0);
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if (in_array($item['type'], ["net-comment", "wall-comment"])) {
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$item['type'] = 'remote-comment';
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} elseif ($item['type'] == 'wall') {
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$item['type'] = 'remote';
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}
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$public_shadow = item_store($item, false, false, true);
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logger("Stored public shadow for thread ".$itemid." under id ".$public_shadow, LOGGER_DEBUG);
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}
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}
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}
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/**
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* @brief Add a shadow entry for a given item id that is a comment
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*
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* This function does the same like the function above - but for comments
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*
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* @param integer $itemid Item ID that should be added
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*/
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public static function addShadowPost($itemid)
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{
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$item = dba::selectFirst('item', [], ['id' => $itemid]);
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if (!DBM::is_result($item)) {
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return;
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}
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// Is it a toplevel post?
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if ($item['id'] == $item['parent']) {
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self::addShadow($itemid);
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return;
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}
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// Is this a shadow entry?
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if ($item['uid'] == 0)
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return;
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// Is there a shadow parent?
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if (!dba::exists('item', ['uri' => $item['parent-uri'], 'uid' => 0])) {
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return;
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}
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// Is there already a shadow entry?
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if (dba::exists('item', ['uri' => $item['uri'], 'uid' => 0])) {
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return;
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}
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// Preparing public shadow (removing user specific data)
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unset($item['id']);
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$item['uid'] = 0;
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$item['origin'] = 0;
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$item['wall'] = 0;
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$item['contact-id'] = Contact::getIdForURL($item['author-link'], 0);
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if (in_array($item['type'], ["net-comment", "wall-comment"])) {
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$item['type'] = 'remote-comment';
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} elseif ($item['type'] == 'wall') {
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$item['type'] = 'remote';
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}
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$public_shadow = item_store($item, false, false, true);
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logger("Stored public shadow for comment ".$item['uri']." under id ".$public_shadow, LOGGER_DEBUG);
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}
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}
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