<?php // $Id: quota.php 21106 2009-05-30 16:25:16Z iflorespaz $
/*
==============================================================================
	Dokeos - elearning and course management software
	
	Copyright (c) 2004 Dokeos S.A.
	Copyright (c) 2005 Roan Embrechts, Vrije Universiteit Brussel
	
	For a full list of contributors, see "credits.txt".
	The full license can be read in "license.txt".
	
	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.
	
	See the GNU General Public License for more details.
	
	Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
==============================================================================
*/
/**
==============================================================================
*	This script displays info about the course disk use and quota:
*	how large (in megabytes) is the documents area of the course,
*	what is the maximum allowed for this course...
*
*	@author Roan Embrechts
*	@package dokeos.document
==============================================================================
*/
	
// name of the language file that needs to be included
$language_file = 'document';
 
// including the global dokeos file
require_once "../inc/global.inc.php"; 

// including additional libraries
require_once api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php';
require_once api_get_path(LIBRARY_PATH) . 'document.lib.php';
	
// some constants and variables 
$courseDir   = $_course['path']."/document";
$maxFilledSpace = DEFAULT_DOCUMENT_QUOTA;

// breadcrumbs
$interbreadcrumb[]=array("url" => "document.php","name" => get_lang('Document'));

// title of the page
$nameTools = get_lang("DocumentQuota");

// display the header
Display::display_header($nameTools,"Doc");



/*
==============================================================================
		FUNCTIONS
==============================================================================
*/ 

/**
*	Here we count 1 kilobyte = 1000 byte, 12 megabyte = 1000 kilobyte.
*/
function display_quota($course_quota, $already_consumed_space)
{
	$course_quota_m = round($course_quota / 1000000);
	$already_consumed_space_m = round($already_consumed_space / 1000000);
	$message = get_lang("CourseCurrentlyUses") . " <strong>" . $already_consumed_space_m . " megabyte</strong>.<br/>". get_lang("MaximumAllowedQuota") . " <strong>$course_quota_m megabyte</strong>.<br/>";
	
	$percentage = $already_consumed_space / $course_quota * 100;
	$percentage = round($percentage);

	if ($percentage < 100) $other_percentage = 100 - $percentage;
	else $other_percentage = 0;
	
	//decide where to place percentage in graph
	if ($percentage >= 50)
	{
		$text_in_filled = "&nbsp;$other_percentage%".
		$text_in_unfilled = "";
	}
	else
	{
		$text_in_unfilled = "&nbsp;$other_percentage%".
		$text_in_filled = "";
	}
	
	//decide the background colour of the graph
	if ($percentage < 65) $colour = "#00BB00"; //safe - green
	else if ($percentage < 90) $colour = "#ffd400"; //filling up - yelloworange
	else $colour = "#DD0000"; //full - red
	
	//this is used for the table width: a table of only 100 pixels looks too small
	$visual_percentage = 4 * $percentage;
	$visual_other_percentage = 4 * $other_percentage;
	
	$message .=  get_lang("PercentageQuotaInUse") . ": <strong>$percentage%</strong>.<br/>" . 
				get_lang("PercentageQuotaFree") . ": <strong>$other_percentage%</strong>.<br>";
	
	$message .= "<br/><table cellpadding=\"\" cellspacing=\"0\" height=\"40\"><tr>
				<td bgcolor=\"$colour\" width=\"$visual_percentage\"></td>
				<td bgcolor=\"Silver\" width=\"$visual_other_percentage\">&nbsp;$other_percentage%</td>
				</tr></table>";
				
	echo $message;
}

// actions
echo '<div class="actions">';
// link back to the documents overview
echo '<a href="document.php">'.Display::return_icon('back.png',get_lang('Back').' '.get_lang('To').' '.get_lang('DocumentsOverview')).get_lang('Back').' '.get_lang('To').' '.get_lang('DocumentsOverview').'</a>';
echo '</div>';
	
// getting the course quota
$course_quota = DocumentManager::get_course_quota();

// setting the full path
$full_path = $baseWorkDir . $courseDir;

// calculating the total space
$already_consumed_space = documents_total_space($_course);

// displaying the quota
display_quota($course_quota, $already_consumed_space);

// display the footer
Display::display_footer();
?>