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diff --git a/www/wiki/extensions/WfextStyle/maintenance/generateThumbsImages.php b/www/wiki/extensions/WfextStyle/maintenance/generateThumbsImages.php
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+++ b/www/wiki/extensions/WfextStyle/maintenance/generateThumbsImages.php
@@ -0,0 +1,152 @@
+<?php
+/**
+ * Run pending jobs.
+ *
+ * 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
+ */
+
+require_once __DIR__ . '/../../../maintenance/Maintenance.php';
+
+/**
+ * Maintenance script that runs pending jobs.
+ *
+ * @ingroup Maintenance
+ */
+class GenerateThumbsImages extends Maintenance {
+
+	protected $sizes = [];
+
+	public function __construct() {
+		parent::__construct();
+		$this->addDescription( 'Run pending jobs' );
+		$this->addOption( 'reallyRun', 'if not set, this will only show what it would have done', false, false );
+		$this->addOption( 'maxThumbs', 'Maximum number of thumbs to generat', false, true );
+		$this->addOption( 'maxTime', 'Maximum amount of wall-clock time', false, true );
+		$this->addOption( 'startName', 'imageNameToStart', false, true );
+		$this->addOption( 'lastMin', 'number of min for select recents pictures only ', false, true );
+	}
+
+	public function execute() {
+		global $wgCommandLineMode, $wgThumbLimits;
+
+		$this->sizes = $wgThumbLimits;
+
+
+		$reallyRun = $this->hasOption( 'reallyRun' );
+
+		$maxThumbs = $this->getOption( 'maxThumbs', false );
+		$maxTime = $this->getOption( 'maxTime', false );
+
+		$this->output("Really run : $reallyRun \n");
+		$this->output("Really maxThumbs : $maxThumbs \n");
+
+
+		// look for all files :
+		$titles =[];
+
+		$this->mBatchSize = 20;
+		$lastName = $this->getOption( 'startName', '' );
+		$lastMin = $this->getOption( 'lastMin', '' );
+
+		$conds = [];
+
+		$count = 0;
+		$startTime = wfTimestampNow();
+
+		$repo = RepoGroup::singleton()->getLocalRepo();
+		//$repo->enumFiles( ['GenerateThumbsImages', 'generateThumbsImagesCallBack'] ) ;
+		$dbw = $repo->getMasterDB ();
+
+		if ($lastMin) {
+			$lastMinTimestamp = date("YmdH0000", strtotime("-" . $lastMin . " minutes"));
+			$this->output( "timestamp : $lastMinTimestamp \n" );
+			$conds[] = 'img_timestamp >= ' .$lastMinTimestamp;
+		}
+
+		$totalCount = $dbw->estimateRowCount('image', $vars = '*', $conds);
+		$this->output( "Nb image to check : $totalCount \n" );
+
+		do {
+			$res = $dbw->select ( 'image',
+				array ('img_name', 'img_sha1'),
+				array_merge ( array ('img_name > ' . $dbw->addQuotes ( $lastName )), $conds ),
+				__METHOD__,
+				array (
+					'LIMIT' => $this->mBatchSize,
+					'ORDER BY' => 'img_name'
+				)
+			);
+			foreach ( $res as $row ) {
+				$lastName = $row->img_name;
+				$sha1 = $row->img_sha1;
+				if (! strlen ( $sha1 )) {
+					$this->error ( "Image SHA-1 not set for {$row->img_name}." );
+				} else {
+					$file = $repo->newFile ( $row->img_name );
+					$this->generateAllThumbs($file, $reallyRun);
+
+				}
+			}
+			$count += $res->numRows ();
+			if ($maxThumbs && $count >= $maxThumbs ) {
+				break;
+			}
+			$this->output( "processing images $count/$totalCount \n" );
+		} while ( $res->numRows () );
+	}
+
+	public function generateAllThumbs(File $file, $really) {
+
+		foreach ($this->sizes as $size) {
+
+
+			$thumbName = $file->thumbName( ['width' => $size] );
+			$thumbPath = $file->getThumbPath( $thumbName );
+			//echo '<br/>';
+			$exist = $file->getRepo()->fileExists( $thumbPath );
+			if ( !$exist ) {
+				$transformParams = ["width" => $size ];
+				$thumb = $file->transform( $transformParams,File::RENDER_NOW);
+
+				if ( $thumb && !$thumb->isError()) {
+					$result = True;
+				} else {
+					$result = 'fail';
+				}
+				$this->output("generate Thumb size ". $size  ." file :" . $file->getName() . " result : $result\n");
+			} else {
+				$this->output("existing Thumb size ". $size  ." file :" . $file->getName() . " \n");
+			}
+		}
+	}
+
+	protected function getRepo() {
+		return RepoGroup::singleton()->getLocalRepo();
+	}
+
+	/**
+	 * @param string $s
+	 */
+	public function debugInternal( $s ) {
+		$this->output( $s );
+	}
+}
+
+$maintClass = "GenerateThumbsImages";
+require_once RUN_MAINTENANCE_IF_MAIN;