Version 4.1.19.4

applications/convert/extensions/core/Queue/DeleteEmptyTopics.php

@@ -0,0 +1,143 @@
+<?php
+
+/**
+ * @brief		Background Task
+ * @author		<a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
+ * @copyright	(c) 2001 - 2016 Invision Power Services, Inc.
+ * @license		http://www.invisionpower.com/legal/standards/
+ * @package		IPS Community Suite
+ * @subpackage	Converter
+ * @since		26 July 2016
+ */
+
+namespace IPS\convert\extensions\core\Queue;
+
+/* To prevent PHP errors (extending class does not exist) revealing path */
+if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
+{
+	header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
+	exit;
+}
+
+/**
+ * Background Task
+ */
+class _DeleteEmptyTopics
+{
+	/**
+	 * Parse data before queuing
+	 *
+	 * @param	array	$data
+	 * @return	array
+	 */
+	public function preQueueData( $data )
+	{
+		try
+		{
+			$data['count'] = \IPS\Db::i()->select( 'count(tid)', 'forums_topics' )->first();
+		}
+		catch( \Exception $e )
+		{
+			throw new \OutOfRangeException;
+		}
+
+		if( $data['count'] == 0 )
+		{
+			return NULL;
+		}
+
+		return $data;
+	}
+
+	/**
+	 * Run Background Task
+	 *
+	 * @param	mixed					$data	Data as it was passed to \IPS\Task::queue()
+	 * @param	int						$offset	Offset
+	 * @return	int|null					New offset or NULL if complete
+	 * @throws	\IPS\Task\Queue\OutOfRangeException	Indicates offset doesn't exist and thus task is complete
+	 */
+	public function run( $data, $offset )
+	{
+		if ( !class_exists( 'IPS\forums\Topic' ) OR !\IPS\Application::appisEnabled( 'forums' ) )
+		{
+			throw new \IPS\Task\Queue\OutOfRangeException;
+		}
+
+		/* If app was removed, then cancel this */
+		try
+		{
+			$app = \IPS\convert\App::load( $data['app'] );
+		}
+		catch( \OutOfRangeException $e )
+		{
+			throw new \IPS\Task\Queue\OutOfRangeException;
+		}
+
+		$last = NULL;
+
+		foreach( new \IPS\Patterns\ActiveRecordIterator( \IPS\Db::i()->select( '*', 'forums_topics', array( "tid>?", $offset ), "tid ASC", array( 0, 50 ) ), 'IPS\forums\Topic' ) AS $topic )
+		{
+			$tid = $topic->tid;
+
+			/* Is this converted content? */
+			try
+			{
+				/* Just checking, we don't actually need anything */
+				$app->checkLink( $tid, 'forums_topics' );
+			}
+			catch( \OutOfRangeException $e )
+			{
+				$last = $tid;
+				continue;
+			}
+
+			if ( $topic->isArchived() == FALSE )
+			{
+				try
+				{
+					\IPS\Db::i()->select( 'pid', 'forums_posts', array( 'topic_id=?', $topic->tid ), NULL, 1 )->first();
+				}
+				/* This topic is empty */
+				catch( \UnderflowException $e )
+				{
+					$topic->delete();
+				}
+			}
+			else
+			{
+				try
+				{
+					/* Set first post */
+					\IPS\forums\Topic\ArchivedPost::db()->select( 'archive_id', 'forums_archive_posts', array( "archive_topic_id=?", $topic->tid ), NULL, 1 )->first();
+				}
+				/* This topic is empty */
+				catch( \UnderflowException $e )
+				{
+					$topic->delete();
+				}
+			}
+
+			$last = $tid;
+		}
+
+		if( $last === NULL )
+		{
+			throw new \IPS\Task\Queue\OutOfRangeException;
+		}
+
+		return $last;
+	}
+
+	/**
+	 * Get Progress
+	 *
+	 * @param	mixed					$data	Data as it was passed to \IPS\Task::queue()
+	 * @param	int						$offset	Offset
+	 * @return	array( 'text' => 'Doing something...', 'complete' => 50 )	Text explaning task and percentage complete
+	 */
+	public function getProgress( $data, $offset )
+    {
+        return array( 'text' => \IPS\Member::loggedIn()->language()->addToStack( 'queue_deleting_empty_topics' ), 'complete' => $data['count'] ? ( round( 100 / $data['count'] * $offset, 2 ) ) : 100 );
+    }
+}