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125 lines
2.8 KiB
PHP
125 lines
2.8 KiB
PHP
<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\attachment;
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use \phpbb\db\driver\driver_interface;
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/**
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* Attachment resync class
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*/
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class resync
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{
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/** @var driver_interface */
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protected $db;
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/** @var string Attachment table SQL ID */
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private $attach_sql_id;
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/** @var string Resync table SQL ID */
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private $resync_sql_id;
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/** @var string Resync SQL table */
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private $resync_table;
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/** @var string SQL where statement */
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private $sql_where;
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/**
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* Constructor for attachment resync class
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*
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* @param driver_interface $db Database driver
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*/
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public function __construct(driver_interface $db)
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{
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$this->db = $db;
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}
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/**
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* Set type constraints for attachment resync
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*
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* @param string $type Type of resync; can be: message|post|topic
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*/
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protected function set_type_constraints($type)
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{
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switch ($type)
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{
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case 'message':
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$this->attach_sql_id = 'post_msg_id';
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$this->sql_where = ' AND in_message = 1
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AND is_orphan = 0';
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$this->resync_table = PRIVMSGS_TABLE;
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$this->resync_sql_id = 'msg_id';
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break;
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case 'post':
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$this->attach_sql_id = 'post_msg_id';
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$this->sql_where = ' AND in_message = 0
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AND is_orphan = 0';
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$this->resync_table = POSTS_TABLE;
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$this->resync_sql_id = 'post_id';
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break;
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case 'topic':
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$this->attach_sql_id = 'topic_id';
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$this->sql_where = ' AND is_orphan = 0';
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$this->resync_table = TOPICS_TABLE;
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$this->resync_sql_id = 'topic_id';
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break;
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}
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}
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/**
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* Resync specified type
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*
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* @param string $type Type of resync
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* @param array $ids IDs to resync
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*/
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public function resync($type, $ids)
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{
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if (empty($type) || !is_array($ids) || !sizeof($ids) || !in_array($type, array('post', 'topic', 'message')))
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{
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return;
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}
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$this->set_type_constraints($type);
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// Just check which elements are still having an assigned attachment
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// not orphaned by querying the attachments table
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$sql = 'SELECT ' . $this->attach_sql_id . '
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FROM ' . ATTACHMENTS_TABLE . '
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WHERE ' . $this->db->sql_in_set($this->attach_sql_id, $ids)
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. $this->sql_where;
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$result = $this->db->sql_query($sql);
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$remaining_ids = array();
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while ($row = $this->db->sql_fetchrow($result))
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{
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$remaining_ids[] = $row[$this->attach_sql_id];
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}
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$this->db->sql_freeresult($result);
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// Now only unset those ids remaining
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$ids = array_diff($ids, $remaining_ids);
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if (sizeof($ids))
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{
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$sql = 'UPDATE ' . $this->resync_table . '
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SET ' . $type . '_attachment = 0
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WHERE ' . $this->db->sql_in_set($this->resync_sql_id, $ids);
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$this->db->sql_query($sql);
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}
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}
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}
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