<?
	include_once("inc/php/before.php");
	
	if (isset($_GET["lang"])) {
		$lingua	= $_GET["lang"];
	} else {
		$lingua = "it";
	}

	$media	= $_GET["m"]; // v = video, p = pictures
  	$src	= $_GET["src"]; // source url
  	
  	switch ($media) {
  		case "v": // gestione dei thumbnail da youtube
  		
  			$exploded_url = explode("/", $src);
  			$videoCode = array_pop($exploded_url);
  			
  			$type = array_pop($exploded_url); // scopre se è un video o altro
  			
  			switch ($type) {
  				case "v":
  					$img = imagecreatefromjpeg("http://i.ytimg.com/vi/" . $videoCode . "/default.jpg");
  				break;
  				default:
  					$img = imagecreatefromjpeg("img/playlisticon.jpg");
  				break;
  			}
  		break;
  		case "p":	// gestione delle immagini
  			$extension = array_pop(explode(".", $src));
  			
  			$extension = strtolower($extension);
  			
  			switch ($extension) {
  				case "jpeg":
  				case "jpg":
  					$img = imagecreatefromjpeg($src);
  				break;
  				case "gif":
  					$img = imagecreatefromgif($src);
  				break;
  			}
  		break;
  	}
  	
  	// if only one target dimension is specified the other is calculated proportional
  	
  	if (isset($_GET["h"])) {
  		$height	= $_GET["h"]; // target height
  	
  		if (isset($_GET["w"])) {
			$width	= $_GET["w"]; // target width
  		} else {
  			$o_h = imagesy($img);
  			$o_w = imagesx($img);
  				
  			$width = floor(($o_w * $height) / $o_h);
  		}
  	} else if (isset($_GET["w"])) {
  		$width	= $_GET["w"]; // target height
  	
  		if (isset($_GET["h"])) {
			$height	= $_GET["h"]; // target width
  		} else {
  			$o_h = imagesy($img);
  			$o_w = imagesx($img);
  				
  			$height = floor(($o_h * $width) / $o_w);
  		}
  	}
  	
  	$quadro_height = $height;
	$quadro_width  = $width;
	
	$dst_img=ImageCreateTrueColor($quadro_width,$quadro_height);

	$background_color = ImageColorAllocate($dst_img,0xff,0xff,0xff);
	
	ImageFill($dst_img,1,1,$background_color);

	$src_img=$img;

	$source_width = imagesx($src_img);
	$source_height = imagesy($src_img);
	if ($quadro_height < $quadro_width) {
		if ($source_height > $source_width) {
			$picture_height = $quadro_height;
			$picture_width = $picture_height * $source_width / $source_height;
			$xoffset = ($quadro_width/2)-($picture_width/2);
			$yoffset = 0;
		} else if ($source_height < $source_width) {
			$picture_width = $quadro_width;
			$picture_height = $source_height * $picture_width / $source_width;
			$xoffset = 0;
			$yoffset = ($quadro_height/2)-($picture_height/2);
		} else {
			$picture_height = $quadro_height;
			$picture_width = $picture_height * $source_width / $source_height;
			$xoffset = ($quadro_width/2)-($picture_width/2);
			$yoffset = 0;
		}
	}   else if ($quadro_width < $quadro_height) {
		if ($source_height > $source_width) {
			$picture_width = $quadro_width;
			$picture_height = $source_height * $picture_width / $source_width;
			$xoffset = 0;
			$yoffset = ($quadro_height/2)-($picture_height/2);
		} else if ($source_height < $source_width) {
			$picture_height = $quadro_height;
			$picture_width = $picture_height * $source_width / $source_height;
			$xoffset = ($quadro_width/2)-($picture_width/2);
			$yoffset = 0;
		} else {
			$picture_height = $quadro_height;
			$picture_width = $picture_height * $source_width / $source_height;
			$xoffset = ($quadro_width/2)-($picture_width/2);
			$yoffset = 0;
		}
	} else {
		$picture_height = $quadro_height;
		$picture_width = $quadro_width;
		$xoffset = 0;
		$yoffset = 0;
	}

	
	ImageCopyResized($dst_img,$src_img,$xoffset,$yoffset,0,0,$picture_width,$picture_height,ImageSX($src_img),ImageSY($src_img));

	header("Content-type: image/jpeg");
	ImageJpeg($dst_img);
?>