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<?php
/**
 * Erase a page record from the database
 * Irreversible (can't use standard undelete) and does not update link tables
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Maintenance
 * @author Rob Church <robchur@gmail.com>
 */
require_once __DIR__ . '/Maintenance.php';
/**
 * Maintenance script that erases a page record from the database.
 *
 * @ingroup Maintenance
 */
class NukePage extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Remove a page record from the database' );
        $this->addOption( 'delete', "Actually delete the page" );
        $this->addArg( 'title', 'Title to delete' );
    }
    public function execute() {
        $name = $this->getArg( 0 );
        $delete = $this->hasOption( 'delete' );
        $dbw = $this->getDB( DB_MASTER );
        $this->beginTransaction( $dbw, __METHOD__ );
        # Get page ID
        $this->output( "Searching for \"$name\"..." );
        $title = Title::newFromText( $name );
        if ( $title ) {
            $id = $title->getArticleID();
            $real = $title->getPrefixedText();
            $isGoodArticle = $title->isContentPage();
            $this->output( "found \"$real\" with ID $id.\n" );
            # Get corresponding revisions
            $this->output( "Searching for revisions..." );
            $revs = $dbw->selectFieldValues(
                'revision',
                'rev_id',
                [ 'rev_page' => $id ],
                __METHOD__
            );
            $count = count( $revs );
            $this->output( "found $count.\n" );
            # Delete the page record and associated recent changes entries
            if ( $delete ) {
                $this->output( "Deleting page record..." );
                $dbw->delete( 'page', [ 'page_id' => $id ], __METHOD__ );
                $this->output( "done.\n" );
                $this->output( "Cleaning up recent changes..." );
                $dbw->delete( 'recentchanges', [ 'rc_cur_id' => $id ], __METHOD__ );
                $this->output( "done.\n" );
            }
            $this->commitTransaction( $dbw, __METHOD__ );
            # Delete revisions as appropriate
            if ( $delete && $count ) {
                $this->output( "Deleting revisions..." );
                $this->deleteRevisions( $revs );
                $this->output( "done.\n" );
                $this->purgeRedundantText( true );
            }
            # Update stats as appropriate
            if ( $delete ) {
                $this->output( "Updating site stats..." );
                // if it was good, decrement that too
                $ga = $isGoodArticle ? -1 : 0;
                $stats = SiteStatsUpdate::factory( [
                    'edits' => -$count,
                    'articles' => $ga,
                    'pages' => -1
                ] );
                $stats->doUpdate();
                $this->output( "done.\n" );
            }
        } else {
            $this->output( "not found in database.\n" );
            $this->commitTransaction( $dbw, __METHOD__ );
        }
    }
    public function deleteRevisions( $ids ) {
        $dbw = $this->getDB( DB_MASTER );
        $this->beginTransaction( $dbw, __METHOD__ );
        $dbw->delete( 'revision', [ 'rev_id' => $ids ], __METHOD__ );
        $this->commitTransaction( $dbw, __METHOD__ );
    }
}
$maintClass = NukePage::class;
require_once RUN_MAINTENANCE_IF_MAIN;