<?php
/*
 * @package Joomla 1.5
 * @copyright Copyright (C) 2005 Open Source Matters. All rights reserved.
 * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
 *
 * @component Phoca Component
 * @copyright Copyright (C) Jan Pavelka www.phoca.cz
 * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
 */
jimport('joomla.application.component.controller');
jimport( 'joomla.filesystem.folder' ); 
jimport( 'joomla.filesystem.file' );

class PhocaDownloadHelperFront
{	
	function download($fileData, $downloadId, $currentLink, $paramsTmpl) {
			
		global $mainframe;
		$directLink 	= $fileData['directlink'];// Direct Link 0 or 1
		$absOrRelFile	= $fileData['file'];// Relative Path or Absolute Path
		
		// NO FILES FOUND (abs file)
		$error = false;
		$error = preg_match("/PhocaError/i", $absOrRelFile);
		
		if ($error) {
			$msg = JText::_('Error while downloading file');
			$mainframe->redirect($currentLink, $msg);
		} else {
			
			// Get extensions
			$extension = JFile::getExt($absOrRelFile);
			
			// Get Mime from params ( ext --> mime)
			$allowedMimeType = PhocaDownloadHelper::getMimeType($extension, $paramsTmpl['allowed_file_types']);
			$disallowedMimeType = PhocaDownloadHelper::getMimeType($extension, $paramsTmpl['disallowed_file_types']);
			
			
			// NO MIME FOUND
			$errorAllowed 		= false;// !!! IF YES - Disallow Downloading
			$errorDisallowed 	= false;// !!! IF YES - Allow Downloading
			
			$errorAllowed 		= preg_match("/PhocaError/i", $allowedMimeType);
			$errorDisallowed	= preg_match("/PhocaError/i", $disallowedMimeType);
			
			if ($errorAllowed) {
				$msg = JText::_('Error while downloading file (Mime Type not found)');
				$mainframe->redirect($currentLink, $msg);
			} else if (!$errorDisallowed) {
				$msg = JText::_('Error while downloading file (Disallowed Mime Type)');
				$mainframe->redirect($currentLink, $msg);
			
			} else {
				if ($directLink == 1) {
					
					$addHit	= PhocaDownloadHelperFront::_hit($downloadId);
					$fileWithoutPath	= basename($absOrRelFile);
					if ($paramsTmpl['send_mail_download'] > 0) {
						PhocaDownloadHelper::sendPhocaDownloadMail((int)$paramsTmpl['send_mail_download'], $fileWithoutPath, 1);
					}
					// USER Statistics
					if ($paramsTmpl['enable_user_statistics'] == 1) {
						$addUserStat = PhocaUserStatHelper::createUserStatEntry($downloadId);
					}
					
					$mainframe->redirect ($absOrRelFile);
					exit;
				} else {
				
					// Clears file status cache
					clearstatcache();
					
					
				
					$fileWithoutPath	= basename($absOrRelFile);
					$fileSize 			= filesize($absOrRelFile);
					$mimeType			= '';
					$mimeType			= $allowedMimeType;
					
					// HIT Statistics
					$addHit	= PhocaDownloadHelperFront::_hit($downloadId);
					
					if ($paramsTmpl['send_mail_download'] > 0) {
						PhocaDownloadHelper::sendPhocaDownloadMail((int)$paramsTmpl['send_mail_download'], $fileWithoutPath, 1);
					}
					
					// USER Statistics
					if ($paramsTmpl['enable_user_statistics'] == 1) {
						$addUserStat = PhocaUserStatHelper::createUserStatEntry($downloadId);
					}
					
					if ($fileSize == 0 ) {
						die(JText::_('File Size is empty'));
						exit;
					}
					
					
					
					// Clean the output buffer
					ob_end_clean();
					
					header("Cache-Control: public, must-revalidate");
					header('Cache-Control: pre-check=0, post-check=0, max-age=0');
					header("Pragma: no-cache");
					header("Expires: 0"); 
					header("Content-Description: File Transfer");
					header("Expires: Sat, 30 Dec 1990 07:07:07 GMT");
					header("Accept-Ranges: bytes"); 
					
					// SSL Support
					// header('Cache-Control: private, max-age=0, must-revalidate, no-store'); // comment above cache-control, pragma, expires
					
					// HTTP Range
					$httpRange = 0;
					if(isset($_SERVER['HTTP_RANGE'])) {
						list($a, $httpRange) = explode('=', $_SERVER['HTTP_RANGE']);
						str_replace($httpRange, '-', $httpRange);
						$newFileSize	= $fileSize - 1;
						$newFileSizeHR	= $fileSize - $httpRange;
						header("HTTP/1.1 206 Partial Content");
						header("Content-Length: ".(string)$newFileSizeHR);
						header("Content-Range: bytes ".$httpRange . $newFileSize .'/'. $fileSize);
					} else {
						$newFileSize	= $fileSize - 1;
						header("Content-Length: ".(string)$fileSize);
						header("Content-Range: bytes 0-".$newFileSize . '/'.$fileSize);
					}
					header("Content-Type: " . (string)$mimeType);
					header('Content-Disposition: attachment; filename="'.$fileWithoutPath.'"');
					header("Content-Transfer-Encoding: binary\n");
					
					//@readfile($absOrRelFile);
					
					// Try to deliver in chunks
					@set_time_limit(0);
					$fp = @fopen($absOrRelFile, 'rb');
					if ($fp !== false) {
						while (!feof($fp)) {
							echo fread($fp, 8192);
						}
						fclose($fp);
					} else {
						@readfile($absOrRelFile);
					}
					flush();
					exit;
				}
			}
			
		}
		return false;
	
	}
	
	function _hit($id) {
		global $mainframe;
		$table = & JTable::getInstance('PhocaDownload', 'Table');
		$table->hit($id);
		return true;
	}
	
	function getOrderingText ($ordering) {
		switch ((int)$ordering) {
			case 2:
				$orderingOutput	= 'ordering DESC';
			break;
			
			case 3:
				$orderingOutput	= 'title ASC';
			break;
			
			case 4:
				$orderingOutput	= 'title DESC';
			break;
			
			case 5:
				$orderingOutput	= 'date ASC';
			break;
			
			case 6:
				$orderingOutput	= 'date DESC';
			break;
			
			case 7:
				$orderingOutput	= 'id ASC';
			break;
			
			case 8:
				$orderingOutput	= 'id DESC';
			break;
		
			case 1:
			default:
				$orderingOutput = 'ordering ASC';
			break;
		}
		return $orderingOutput;
	}
	
	function renderOnUploadJS() {
		
		$tag = "<script type=\"text/javascript\"> \n"
		. "function OnUploadSubmitFile() { \n"
		. "document.getElementById('loading-label-file').style.display='block'; \n" 
		. "return true; \n"
		. "} \n"
		. "</script>";
		return $tag;
	}
	
	function renderDescriptionUploadJS($chars) {
		
		$tag = "<script type=\"text/javascript\"> \n"
		."function countCharsUpload() {" . "\n"
		."var maxCount	= ".$chars.";" . "\n"
		."var pdu 			= document.getElementById('phocadownload-upload-form');" . "\n"
		."var charIn		= pdu.phocadownloaduploaddescription.value.length;" . "\n"
		."var charLeft	= maxCount - charIn;" . "\n"
		."" . "\n"
		."if (charLeft < 0) {" . "\n"
		."   alert('".JText::_('PHOCADOWNLOAD_MAX_LIMIT_CHARS_REACHED')."');" . "\n"
		."   pdu.phocadownloaduploaddescription.value = pdu.phocadownloaduploaddescription.value.substring(0, maxCount);" . "\n"
		."	charIn	 = maxCount;" . "\n"
		."  charLeft = 0;" . "\n"
		."}" . "\n"
		."pdu.phocadownloaduploadcountin.value	= charIn;" . "\n"
		."pdu.phocadownloaduploadcountleft.value	= charLeft;" . "\n"
		."}" . "\n"
		. "</script>";
		
		return $tag;
	}
	
	function userTabOrdering() {	
		$js  = "\t". '<script language="javascript" type="text/javascript">'."\n"
			 . 'function tableOrdering( order, dir, task )' . "\n"
			 . '{ ' . "\n"
			 . "\t".'var form = document.phocadownloadfilesform;' . "\n"
			 . "\t".'form.filter_order.value 		= order;' . "\n"
			 . "\t".'form.filter_order_Dir.value	= dir;' . "\n"
			 . "\t".'document.phocadownloadfilesform.submit();' . "\n"
			 . '}'. "\n"
			 . '</script>' . "\n";
			
		return $js;
	}
}


jimport('joomla.html.pagination');
class PhocaPagination extends JPagination
{

	function getLimitBox()
	{
		global $mainframe;
		
		$paramsC 			= JComponentHelper::getParams('com_phocadownload') ;
		$pagination 		= $paramsC->get( 'pagination', '5;10;15;20;50;100' );
		$paginationArray	= explode( ';', $pagination );
		
		// Initialize variables
		$limits = array ();

		foreach ($paginationArray as $paginationValue) {
			$limits[] = JHTML::_('select.option', $paginationValue);
		}
		$limits[] = JHTML::_('select.option', '0', JText::_('all'));

		$selected = $this->_viewall ? 0 : $this->limit;

		// Build the select list
		if ($mainframe->isAdmin()) {
			$html = JHTML::_('select.genericlist',  $limits, 'limit', 'class="inputbox" size="1" onchange="submitform();"', 'value', 'text', $selected);
		} else {
			$html = JHTML::_('select.genericlist',  $limits, 'limit', 'class="inputbox" size="1" onchange="this.form.submit()"', 'value', 'text', $selected);
		}
		return $html;
	}
}
?>