<?php
$maxThumbDimension = 50;

$dir = $argv[1];
$imagedir = "files/$dir/product_images";
echo("$imagedir\n");

$files = array();
if (is_dir($imagedir)) {
   $dir = opendir($imagedir);
   while (($file = readdir($dir)) != false) {
      if ($file == ".") continue;
      if ($file == "..") continue;
      if (preg_match("/-tn\./",$file)) continue;
      $files[] = $file;
   }
}

$cmd="/usr/bin/convert";

for ($i = 0; $i < count($files); $i++) {
   $image = $files[$i];

   list($name,$ext) = explode('.',$image);
   $thumbnail = $name."-tn.".$ext;
   echo("$thumbnail\n");

   // Get image dimensions
   $image_size = GetImageSize("$imagedir/$image");
   $image_width  = $image_size[0];
   $image_height = $image_size[1];

   $target = "$imagedir/temp";

   if ($image_width >= $image_height) {
      // Create the thumbnail
      $height = intval($image_height * $maxThumbDimension / $image_width);
      $command = "$cmd -size {$image_width}x$image_height $imagedir/$image -resize {$maxThumbDimension}x$height +profile \"*\" $target";
      exec($command);
      rename($target,"$imagedir/$thumbnail");
   }
   else {
      // Create the thumbnail
      $width = intval($image_width * $maxThumbDimension / $image_height);
      $command = "$cmd -size {$image_width}x{$image_height} $imagedir/$image -resize {$width}x{$maxThumbDimension} +profile \"*\" $target";
      exec($command);
      rename($target,"$imagedir/$thumbnail");
   }
}

?>