<?php
/**
 * JdvThumbs Class
 * 
 */
// no direct access
defined('_JEXEC') or die('Restricted access');

class JdvThumbs
{
	var $_thumbParams;
	
	function __construct()
	{
		$this->_thumbParams['width'] = 200;
		$this->_thumbParams['height'] = 200;
		$this->_thumbParams['quality'] = 100;
		$this->_thumbParams['method'] = 'resized';
		$this->_thumbParams['alpha'] = 1;
		$this->_thumbParams['thumbtype'] = 'jpg';
		$this->_thumbParams['sizeon'] = 'both';
		$this->_thumbParams['prefix'] = 'thumb';
		
		$this->_thumbParams['thumbsdir'] = 'cache/plg_jdvthumbs';
		$this->_thumbParams['replace'] = 0;
		$this->_thumbParams['md5'] = 1;
	}
	
	function set($param, $value){
		$this->_thumbParams[$param] = $value;
	}
	
	function get($param){
		return $this->_thumbParams[$param];
	}
	
	function doThumbnail( $files, $is_abs=false )
	{
		//global $mainframe;
		
		
		
		extract($this->_thumbParams);

		if ($thumbtype == 'jpg'){
			$thumb_ext = 'jpg';
		}else{
			$thumb_ext = $file_ext;
		}
		
		

		
		
		$files_thumb = array();
		$files_src = array();
		
		$thumbsdir = str_replace( array('/', '\\'), DS, $thumbsdir );
		$path_dest = JPATH_ROOT . DS . $thumbsdir;
		
		
		

		$n		= count( $files );

		foreach ($files as &$file) {
		
			$www = JURI::base();
			if (strpos($www, '://www.') === false){
				$www2 = str_replace(array('http://', 'https://'), array('http://www.', 'https://www.'), JURI::base());
			}else{
				$www2 = str_replace(array('http://www.', 'https://www.'), array('http://', 'https://'), JURI::base());
			}
			
			$file = str_replace(array($www, $www2), '', $file);
			
			if (!$is_abs){
				$file_url = str_replace( DS, '/', $file );
				$file = str_replace( array('/', '\\'), DS, $file );
				$file = JPATH_ROOT . DS . $file; 
			}else{
				$file = str_replace( array('/', '\\'), DS, $file );
				
				$file_url = str_replace( JPATH_ROOT, '', $file );
				$file_url = str_replace( DS, '/', $file_url );

			}

			
			//echo md5( $file );

			$filename = basename( $file );
			$file_ext = $this->getFileExt( $filename );
			
			$array_ext = array('jpg', 'png');
			if (!in_array($file_ext, $array_ext)){
				continue;
			}
			unset($array_ext);
		
			$files_thumb[] = $path_dest . DS . $prefix . ($md5 ? '-' . @md5( $file ) : '') . '.' . $thumb_ext;
			//print_r($files_thumb);
			//echo  $file;
			$files_src[] = $file;
			
			
			if ($this->chkCache( $file, $prefix, $thumb_ext, $replace, $md5 )) {
				$n--;
				continue;
			}

			if (!is_file($file)) {
				$n--;
				continue;
			}
			

			// Get new sizes
			list($width_source, $height_source) = getimagesize($file);

			switch ($sizeon) {
			case 'width':
				$new_width = $width;
				$percent = $width / $width_source;
				$new_height = $height_source * $percent;
				break;
				
			case 'height':
				$new_height = $height;
				$percent = $height / $height_source;
				$new_width = $width_source * $percent;
				break;
			
			default:
				if (($width / $height) < ($width_source / $height_source)){
					$new_width = $width;
					$percent = $width / $width_source;
					$new_height = $height_source * $percent;
				} else {
					$new_height = $height;
					$percent = $height / $height_source;
					$new_width = $width_source * $percent;
				}

			}
//echo $width;
			if (($new_width < $width_source || $new_height < $height_source)) {
				$thumb = imagecreatetruecolor($new_width, $new_height );
				
				
			} else {
				if ($thumbtype == 'jpg' && $file_ext != $thumbtype) {
					$thumb = imagecreatetruecolor($width_source, $height_source );
				}else{
					if (!copy( $file, $path_dest . DS . $prefix . ($md5 ? '-' . @md5( $file ) : '') . '.' . $thumb_ext)) {
						$n--;
					}
					continue;
				}
				
				
				
			}
			
			switch ($file_ext) {
			case 'jpg':
				// Set the content prefix header - in this case image/jpeg
				//ini_set("memory_limit", "64M");
				$source = @imagecreatefromjpeg($file);

				break;
			case 'png':
				$source = @imagecreatefrompng($file);
				break;
			}
			if ($alpha && $file_ext == 'png'){
				imagealphablending($thumb, false);
				imagesavealpha($thumb, true);
			}
			
			
			
			if ($method == 'resampled'){
				// Resampled
				imagecopyresampled($thumb, $source, 0, 0, 0, 0, $new_width, $new_height, $width_source, $height_source);
			} else{
				imagecopyresized($thumb, $source, 0, 0, 0, 0, $new_width, $new_height, $width_source, $height_source);
			}
			
			
			
			switch ($thumb_ext) {
			case 'jpg':
			
				// Set the content prefix header - in this case image/jpeg
				header('Content-prefix: image/jpeg');
				break;
			case 'png':
				header('Content-prefix: image/png');
				break;
			default:
				$n--;
				continue 2;
				break;
			}

			
			// Output
			switch ($thumb_ext) {
			case 'jpg':
				imagejpeg($thumb, $path_dest . DS . $prefix . ($md5 ? '-' . @md5( $file ) : '') . '.' . $thumb_ext, $quality);
				break;
			case 'png':
				$q = ($quality - 10) / 100;
				imagepng($thumb, $path_dest . DS . $prefix . ($md5 ? '-' . @md5( $file ) : '') . '.' . $thumb_ext, $q, PNG_ALL_FILTERS );
				break;
			}


			// Free up memory
			imagedestroy($thumb);
			imagedestroy($source);
			
			
		}
		
		
		return array( $files_thumb, $files_src );
	} // end function doThumbnail	
	
	
	function chkCache( $file, $prefix, $thumb_ext, $replace, $md5 )
	{
		$filename = basename( $file );
		
		$hash = ($md5 ? '-' . @md5( $file ) : '');
		
		$thumbsdir = $this->get( 'thumbsdir' );

		$thumbsdir = str_replace( array('/', '\\'), DS, $thumbsdir );
		$path_dest = JPATH_ROOT . DS . $thumbsdir;
		
		if (!JFolder::exists($path_dest)) {
			//JFolder::create($path_dest, '0755');
			JFolder::create($path_dest);
		}
		
		$cachefile = $path_dest . DS . $prefix . $hash . '.' . $thumb_ext;
		
		if (!$replace)
		if (is_file( $cachefile )) {
			return true;
		}
		
		return false;
	}
	
	
	function getFileExt( $filename )
	{
		$file_extension = strtolower(substr(strrchr($filename,"."),1));
		return $file_extension;
	}
	
	
	function getURL( $filename )
	{
		$path_from_base = str_replace(JPATH_SITE . DS, '', $filename);
		
		$juri_base = JURI::root();
		

		$path_from_base = str_replace($juri_base, '', $path_from_base);
		$url = str_replace( DS, '/', $path_from_base );
		$url = $juri_base . $url;
		
		return $url;
	}
}
?>