155 lines
3.8 KiB
PHP
155 lines
3.8 KiB
PHP
<?php
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/**
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* @brief Background Task
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* @author <a href='https://www.invisioncommunity.com'>Invision Power Services, Inc.</a>
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* @copyright (c) Invision Power Services, Inc.
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* @license https://www.invisioncommunity.com/legal/standards/
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* @package Invision Community
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* @subpackage convert
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* @since 26 July 2016
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*/
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namespace IPS\convert\extensions\core\Queue;
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/* To prevent PHP errors (extending class does not exist) revealing path */
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use Exception;
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use IPS\Application;
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use IPS\convert\App;
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use IPS\Db;
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use IPS\Extensions\QueueAbstract;
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use IPS\forums\Topic\ArchivedPost;
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use IPS\Member;
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use IPS\Patterns\ActiveRecordIterator;
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use IPS\Task\Queue\OutOfRangeException;
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use UnderflowException;
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use function defined;
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use const IPS\REBUILD_SLOW;
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if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
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{
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header( ( $_SERVER['SERVER_PROTOCOL'] ?? 'HTTP/1.0' ) . ' 403 Forbidden' );
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exit;
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}
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/**
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* Background Task
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*/
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class DeleteEmptyTopics extends QueueAbstract
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{
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/**
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* Parse data before queuing
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*
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* @param array $data Data
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* @return array|null
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*/
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public function preQueueData( array $data ): ?array
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{
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try
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{
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$data['count'] = Db::i()->select( 'count(tid)', 'forums_topics', array( 'forums_posts.pid IS NULL' ) )->join( 'forums_posts', 'forums_posts.topic_id=forums_topics.tid' )->first();
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}
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catch( Exception $e )
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{
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throw new \OutOfRangeException;
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}
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if( $data['count'] == 0 )
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{
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return NULL;
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}
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$data['completed'] = 0;
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return $data;
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}
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/**
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* Run Background Task
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*
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* @param mixed $data Data as it was passed to \IPS\Task::queue()
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* @param int $offset Offset
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* @return int New offset or NULL if complete
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* @throws OutOfRangeException Indicates offset doesn't exist and thus task is complete
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*/
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public function run( mixed &$data, int $offset ): int
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{
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if ( !class_exists( 'IPS\forums\Topic' ) OR !Application::appisEnabled( 'forums' ) )
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{
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throw new OutOfRangeException;
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}
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/* If app was removed, then cancel this */
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try
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{
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$app = App::load( $data['app'] );
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}
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catch( \OutOfRangeException $e )
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{
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throw new OutOfRangeException;
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}
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$last = NULL;
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foreach( new ActiveRecordIterator( Db::i()->select( '*', 'forums_topics', array( "tid>? AND forums_posts.pid IS NULL", $offset ), "tid ASC", array( 0, REBUILD_SLOW ) )->join( 'forums_posts', 'forums_posts.topic_id=forums_topics.tid' ), 'IPS\forums\Topic' ) AS $topic )
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{
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$tid = $topic->tid;
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/* Is this converted content? */
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try
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{
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/* Just checking, we don't actually need anything */
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$app->checkLink( $tid, 'forums_topics' );
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}
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catch( \OutOfRangeException $e )
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{
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$last = $tid;
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$data['completed']++;
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continue;
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}
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/* If the topic isn't archived, we can delete it */
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if ( !$topic->isArchived() )
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{
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$topic->delete();
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}
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else
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{
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/* Archived topics will erroneously be picked up by our query, but that's ok...we'll just check them here and delete if empty */
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try
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{
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/* Do we have any posts? This is more efficient than running a COUNT(*) query, funny enough */
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ArchivedPost::db()->select( 'archive_id', 'forums_archive_posts', array( "archive_topic_id=?", $topic->tid ), NULL, 1 )->first();
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}
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/* This topic is empty */
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catch( UnderflowException $e )
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{
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$topic->delete();
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}
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}
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$last = $tid;
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$data['completed']++;
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}
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if( $last === NULL )
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{
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throw new OutOfRangeException;
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}
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return $last;
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}
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/**
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* Get Progress
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*
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* @param mixed $data Data as it was passed to \IPS\Task::queue()
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* @param int $offset Offset
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* @return array Text explaning task and percentage complete
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*/
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public function getProgress( mixed $data, int $offset ): array
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{
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return array( 'text' => Member::loggedIn()->language()->addToStack( 'queue_deleting_empty_topics' ), 'complete' => $data['count'] ? ( round( 100 / $data['count'] * $data['completed'], 2 ) ) : 100 );
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}
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} |