chamilo-lms/main/work/work.php

<?php
/* For licensing terms, see /license.txt */

/**
*	@package chamilo.work
* 	@author Thomas, Hugues, Christophe - original version
* 	@author Patrick Cool <patrick.cool@UGent.be>, Ghent University - ability for course admins to specify wether uploaded documents are visible or invisible by default.
* 	@author Roan Embrechts, code refactoring and virtual course support
* 	@author Frederic Vauthier, directories management
*  	@version $Id: work.php 22201 2009-07-17 19:57:03Z cfasanando $
*
* 	@todo refactor more code into functions, use quickforms, coding standards, ...
*/

/**
 * 	STUDENT PUBLICATIONS MODULE
 *
 * Note: for a more advanced module, see the dropbox tool.
 * This one is easier with less options.
 * This tool is better used for publishing things,
 * sending in assignments is better in the dropbox.
 *
 * GOALS
 * *****
 * Allow student to quickly send documents immediately
 * visible on the course website.
 *
 * The script does 5 things:
 *
 * 	1. Upload documents
 * 	2. Give them a name
 * 	3. Modify data about documents
 * 	4. Delete link to documents and simultaneously remove them
 * 	5. Show documents list to students and visitors
 *
 * On the long run, the idea is to allow sending realvideo . Which means only
 * establish a correspondence between RealServer Content Path and the user's
 * documents path.
 *
 * All documents are sent to the address /$_configuration['root_sys']/$currentCourseID/document/
 * where $currentCourseID is the web directory for the course and $_configuration['root_sys']
 * usually /var/www/html
 *
 *	Modified by Patrick Cool, february 2004:
 *	Allow course managers to specify wether newly uploaded documents should
 *	be visible or unvisible by default
 *	This is ideal for reviewing the uploaded documents before the document
 *	is available for everyone.
 *
 *	note: maybe the form to change the behaviour should go into the course
 *	properties page?
 *	note 2: maybe a new field should be created in the course table for
 *	this behaviour.
 *
 *	We now use the show_score field since this is not used.
 *
 */

/*		INIT SECTION */

$language_file = array('exercice', 'work', 'document', 'admin' );

require_once '../inc/global.inc.php';

// @todo why is this needed?
//session
if (isset ($_GET['id_session'])) {
	$_SESSION['id_session'] = Database::escape_string($_GET['id_session']);
}
isset($_SESSION['id_session']) ? $id_session = $_SESSION['id_session'] : $id_session = null;

// Including necessary files
require_once 'work.lib.php';
require_once api_get_path(LIBRARY_PATH).'course.lib.php';
require_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
require_once api_get_path(LIBRARY_PATH).'security.lib.php';
require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
require_once api_get_path(LIBRARY_PATH).'document.lib.php';
require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
require_once api_get_path(LIBRARY_PATH).'usermanager.lib.php';
require_once api_get_path(LIBRARY_PATH).'mail.lib.inc.php';
require_once api_get_path(LIBRARY_PATH).'text.lib.php';

// Section (for the tabs)
$this_section = SECTION_COURSES;
$ctok = $_SESSION['sec_token'];
$stok = Security::get_token();

$htmlHeadXtra[] = to_javascript_work();
$htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.js" type="text/javascript" language="javascript"></script>'; //jQuery
$htmlHeadXtra[] = '<script type="text/javascript">
function setFocus(){
$("#work_title").focus();
}
$(document).ready(function () {
  setFocus();
});
</script>';

// Table definitions
$main_course_table 	= Database :: get_main_table(TABLE_MAIN_COURSE);
$work_table 		= Database :: get_course_table(TABLE_STUDENT_PUBLICATION);
$iprop_table 		= Database :: get_course_table(TABLE_ITEM_PROPERTY);
$TSTDPUBASG			= Database :: get_course_table(TABLE_STUDENT_PUBLICATION_ASSIGNMENT);
$t_gradebook_link 	= Database :: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
$table_course_user	= Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$table_user			= Database :: get_main_table(TABLE_MAIN_USER);
$table_session		= Database :: get_main_table(TABLE_MAIN_SESSION);
$table_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$table_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);

/*	Constants and variables */

$tool_name = get_lang('StudentPublications');
$user_id = api_get_user_id();
$course_code = $_course['sysCode'];
$session_id = api_get_session_id();

$is_course_member = CourseManager::is_user_subscribed_in_real_or_linked_course($user_id, $course_code,$session_id);
$is_course_member = $is_course_member || api_is_platform_admin();

$currentCourseRepositorySys = api_get_path(SYS_COURSE_PATH) . $_course['path'] . '/';
$currentCourseRepositoryWeb = api_get_path(WEB_COURSE_PATH) . $_course['path'] . '/';
$currentUserFirstName = $_user['firstName'];
$currentUserLastName = $_user['lastName'];
$currentUserEmail = $_user['mail'];

$authors = isset($_POST['authors']) ? Database::escape_string($_POST['authors']) : '';
$delete = isset($_REQUEST['delete']) ? Database::escape_string($_REQUEST['delete']) : '';
$description = isset($_REQUEST['description']) ? Database::escape_string($_REQUEST['description']) : '';
$display_tool_options = isset($_REQUEST['display_tool_options']) ? $_REQUEST['display_tool_options'] : '';
$display_upload_form = isset($_REQUEST['display_upload_form']) ? $_REQUEST['display_upload_form'] : '';
$edit = isset($_REQUEST['edit']) ? Database::escape_string($_REQUEST['edit']) : '';
$parent_id = isset($_REQUEST['parent_id']) ? Database::escape_string($_REQUEST['parent_id']) : '';
$make_invisible = isset($_REQUEST['make_invisible']) ? Database::escape_string($_REQUEST['make_invisible']) : '';
$make_visible = isset($_REQUEST['make_visible']) ? Database::escape_string($_REQUEST['make_visible']) : '';
$origin = isset($_REQUEST['origin']) ? Security::remove_XSS($_REQUEST['origin']) : '';
$submitGroupWorkUrl = isset($_REQUEST['submitGroupWorkUrl']) ? Security::remove_XSS($_REQUEST['submitGroupWorkUrl']) : '';
$title = isset($_REQUEST['title']) ? Database::escape_string($_REQUEST['title']) : '';
$uploadvisibledisabled = isset($_REQUEST['uploadvisibledisabled']) ? Database::escape_string($_REQUEST['uploadvisibledisabled']) : '';
$id = isset($_REQUEST['id']) ? strval(intval($_REQUEST['id'])) : '';

// get data for publication assignment
$has_expired = false;
$has_ended = false;
$curdirpath = isset($_GET['curdirpath']) ? Database::escape_string($_GET['curdirpath']) : '';
$sql = Database::query('SELECT description,id FROM '.Database :: get_course_table(TABLE_STUDENT_PUBLICATION).' WHERE filetype = '."'folder'".' and has_properties != '."''".' and url = '."'/".$curdirpath."'".' LIMIT 1');
$is_special = Database::num_rows($sql);
if ($is_special > 0) {
	$publication = Database::fetch_array($sql);
}

//directories management
$sys_course_path = api_get_path(SYS_COURSE_PATH);
$course_dir = $sys_course_path . $_course['path'];
$base_work_dir = $course_dir . '/work';
$http_www = api_get_path('WEB_COURSE_PATH') . $_course['path'] . '/work';
$cur_dir_path = '';
if (isset ($_GET['curdirpath']) && $_GET['curdirpath'] != '') {
	//$cur_dir_path = preg_replace('#[\.]+/#','',$_GET['curdirpath']); //escape '..' hack attempts
	//now using common security approach with security lib
	$in_course = Security :: check_abs_path($base_work_dir . '/' . $_GET['curdirpath'], $base_work_dir);
	if (!$in_course) {
		$cur_dir_path = "/";
	} else {
		$cur_dir_path = $_GET['curdirpath'];
	}
} elseif (isset ($_POST['curdirpath']) && $_POST['curdirpath'] != '') {
	//$cur_dir_path = preg_replace('#[\.]+/#','/',$_POST['curdirpath']); //escape '..' hack attempts
	//now using common security approach with security lib
	$in_course = Security :: check_abs_path($base_work_dir . '/' . $_POST['curdirpath'], $base_work_dir);
	if (!$in_course) {
		$cur_dir_path = "/";
	} else {
		$cur_dir_path = $_POST['curdirpath'];
	}
} else {
	$cur_dir_path = '/';
}
if ($cur_dir_path == '.') {
	$cur_dir_path = '/';
}
$cur_dir_path_url = urlencode($cur_dir_path);

//prepare a form of path that can easily be added at the end of any url ending with "work/"
$my_cur_dir_path = $cur_dir_path;
if ($my_cur_dir_path == '/') {
	$my_cur_dir_path = '';
} elseif (substr($my_cur_dir_path, -1, 1) != '/') {
	$my_cur_dir_path = $my_cur_dir_path . '/';
}

/*	Configuration settings */

$link_target_parameter = ""; //or e.g. "target=\"_blank\"";
$always_show_tool_options = false;
$always_show_upload_form = false;

if ($always_show_tool_options) {
	$display_tool_options = true;
}
if ($always_show_upload_form) {
	$display_upload_form = true;
}

$display_list_users_without_publication = isset($_GET['list']) && Security::remove_XSS($_GET['list']) == 'without';

if (isset($_GET['action']) && $_GET['action'] == 'send_mail') {
	if ($_GET['sec_token'] == $_SESSION['token']) {
		send_reminder_users_without_publication($publication['id']);
		unset($_SESSION['token']);
	}
}

api_protect_course_script(true);

/*	More init stuff */

if (isset ($_POST['cancelForm']) && !empty ($_POST['cancelForm'])) {
	header('Location: ' . api_get_self() . '?origin='.$origin.'&amp;gradebook='.$gradebook);
	exit ();
}

if (!empty($_POST['submitWork']) || !empty($submitGroupWorkUrl)) {
	// These libraries are only used for upload purpose, so we only include them when necessary.
	require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php';
	require_once api_get_path(LIBRARY_PATH).'fileDisplay.lib.php'; // need format_url function
}

// If the POST's size exceeds 8M (default value in php.ini) the $_POST array is emptied
// If that case happens, we set $submitWork to 1 to allow displaying of the error message
// The redirection with header() is needed to avoid apache to show an error page on the next request
if ($_SERVER['REQUEST_METHOD'] == 'POST' && !sizeof($_POST)) {
	if (strstr($_SERVER['REQUEST_URI'], '?')) {
		header('Location: ' . $_SERVER['REQUEST_URI'] . '&submitWork=1');
		exit ();
	} else {
		header('Location: ' . $_SERVER['REQUEST_URI'] . '?submitWork=1');
		exit ();
	}
}

//toolgroup comes from group. the but of tis variable is to limit post to the group of the student
//if (!api_is_course_admin()) {
	if (!empty ($_GET['toolgroup'])) {
		$toolgroup = Database::escape_string($_GET['toolgroup']);
		api_session_register('toolgroup');
	}
//}

//download of an completed folder
if (isset($_GET['action']) && $_GET['action'] == 'downloadfolder') {
	require 'downloadfolder.inc.php';
}

/*	Header */

if (!empty($_GET['gradebook']) && $_GET['gradebook'] == 'view') {
	$_SESSION['gradebook'] = Security::remove_XSS($_GET['gradebook']);
	$gradebook =	$_SESSION['gradebook'];
} elseif (empty($_GET['gradebook'])) {
	unset($_SESSION['gradebook']);
	$gradebook = '';
}

if (!empty($gradebook) && $gradebook == 'view') {
	$interbreadcrumb[] = array (
		'url' => '../gradebook/' . $_SESSION['gradebook_dest'],
		'name' => get_lang('ToolGradebook')
	);
}

if (!empty($_SESSION['toolgroup'])) {
	$_clean['toolgroup'] = (int)$_SESSION['toolgroup'];
	$group_properties  = GroupManager :: get_group_properties($_clean['toolgroup']);
	$interbreadcrumb[] = array ('url' => '../group/group.php', 'name' => get_lang('Groups'));
	$interbreadcrumb[] = array ('url' => '../group/group_space.php?gidReq='.$_SESSION['toolgroup'], 'name' => get_lang('GroupSpace').' ('.$group_properties['name'].')');

	$url_dir ='';
	$interbreadcrumb[] = array ('url' => $url_dir,'name' => get_lang('StudentPublications'));

	//if (!$display_tool_options  && !$display_upload_form)
	//{
		// interbreadcrumb for the current directory root path
		$dir_array = explode('/', $cur_dir_path);
		$array_len = count($dir_array);
		/*
		if ($array_len > 0) {
			$url_dir = 'work.php?&curdirpath=/';
			$interbreadcrumb[] = array (
				'url' => $url_dir,
				'name' => get_lang('HomeDirectory'));
		}*/

		$dir_acum = '';
		for ($i = 0; $i < $array_len; $i++) {
			$url_dir = 'work.php?&curdirpath=' . $dir_acum . $dir_array[$i];
			$interbreadcrumb[] = array (
				'url' => $url_dir,
				'name' => $dir_array[$i]
			);
			$dir_acum .= $dir_array[$i] . '/';
		}
	//}

	if ($display_upload_form) {
		$interbreadcrumb[] = array (
			'url' => 'work.php',
			'name' => get_lang('UploadADocument'));
	}

	if ($display_tool_options) {
		$interbreadcrumb[] = array (
			'url' => 'work.php',
			'name' => get_lang('EditToolOptions'));
	}

	if ($_GET['createdir'] == 1) {
		$interbreadcrumb[] = array (
			'url' => 'work.php',
			'name' => get_lang('CreateFolder'));
	}

	Display :: display_header(null);

} else {

	if (isset($origin) && $origin != 'learnpath') {
		$url_dir = '';
		$interbreadcrumb[] = array ('url' => $url_dir.'?gradebook='.$gradebook, 'name' => get_lang('StudentPublications'));
		//if (!$display_tool_options  && !$display_upload_form)
		//{
		//------interbreadcrumb for the current directory root path
		$dir_array = explode('/', $cur_dir_path);
		$array_len = count($dir_array);

		/*if ($array_len > 0) {
			$url_dir = 'work.php?gradebook='.$gradebook.'&curdirpath=/';
			$interbreadcrumb[] = array (
				'url' => $url_dir,
				'name' => get_lang('HomeDirectory'));
		}*/

		$dir_acum = '';
		for ($i = 0; $i < $array_len; $i++) {
			$url_dir = 'work.php?gradebook='.$gradebook.'&amp;curdirpath=' . $dir_acum . $dir_array[$i];
			$interbreadcrumb[] = array (
				'url' => $url_dir,
				'name' => $dir_array[$i]
			);
			$dir_acum .= $dir_array[$i] . '/';
		}
		//	}

		if ($display_upload_form) {
			$interbreadcrumb[] = array (
				'url' => 'work.php?gradebook='.$gradebook,
				'name' => get_lang('UploadADocument'));
		}

		if ($display_tool_options) {
			$interbreadcrumb[] = array (
				'url' => 'work.php?gradebook='.$gradebook,
				'name' => get_lang('EditToolOptions'));
		}
		if ($_GET['createdir'] == 1) {
			$interbreadcrumb[] = array (
				'url' => 'work.php?gradebook='.$gradebook,
				'name' => get_lang('CreateDir'));
		}

		Display :: display_header(null);

	} else {
		//we are in the learnpath tool
		require api_get_path(INCLUDE_PATH).'reduced_header.inc.php';
	}
}

//stats
event_access_tool(TOOL_STUDENTPUBLICATION);

$is_allowed_to_edit = api_is_allowed_to_edit(); //has to come after display_tool_view_option();
//api_display_tool_title($tool_name);

/*		MAIN CODE */

if (!empty ($_POST['changeProperties'])) {
	// changing the tool setting: default visibility of an uploaded document
	$query = "UPDATE " . $main_course_table . " SET show_score='" . $uploadvisibledisabled . "' WHERE code='" . $_course['sysCode'] . "'";
	Database::query($query);

	// changing the tool setting: is a student allowed to delete his/her own document
	// database table definition
	$table_course_setting = Database :: get_course_table(TOOL_COURSE_SETTING);

	// counting the number of occurrences of this setting (if 0 => add, if 1 => update)
	$query = "SELECT * FROM " . $table_course_setting . " WHERE variable = 'student_delete_own_publication'";
	$result = Database::query($query);
	$number_of_setting = Database::num_rows($result);

	if ($number_of_setting == 1) {
		$query = "UPDATE " . $table_course_setting . " SET value='" . Database::escape_string($_POST['student_delete_own_publication']) . "' WHERE variable='student_delete_own_publication'";
		Database::query($query);
	} else {
		$query = "INSERT INTO " . $table_course_setting . " (variable, value, category) VALUES ('student_delete_own_publication','" . Database::escape_string($_POST['student_delete_own_publication']) . "','work')";
		Database::query($query);
	}

	$_course['show_score'] = $uploadvisibledisabled;
} else {
	$query = "SELECT * FROM " . $main_course_table . " WHERE code=\"" . $_course['sysCode'] . "\"";
	$result = Database::query($query);
	$row = Database::fetch_array($result);
	$uploadvisibledisabled = $row["show_score"];
}

// introduction section

if ($origin == 'learnpath') {
	echo '<div style="height:15px">&nbsp;</div>';
}

Display :: display_introduction_section(TOOL_STUDENTPUBLICATION);

/*	EDIT COMMAND WORK COMMAND */

$qualification_number = 0;
if (!empty($edit)) {

	if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
		api_not_allowed();
	}

	$sql = "SELECT * FROM  " . $work_table . "  WHERE id='" . $edit . "'";
	$result = Database::query($sql);

	if (!empty($result)) {
		$row = Database::fetch_array($result);
		$workTitle = $row['title'];
		$workAuthor = $row['author'];
		$workDescription = $row['description'];
		$workUrl = $row['url'];
		$qualification_number = $row['qualification'];
	}
}

/*	MAKE INVISIBLE WORK COMMAND */

if (!empty($make_invisible)) {
	if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
		api_not_allowed();
	}
	if (isset($make_invisible) && $make_invisible == 'all') {
		$sql = "ALTER TABLE " . $work_table . "
						        CHANGE accepted accepted TINYINT(1) DEFAULT '0'";
		Database::query($sql);
		$sql = "UPDATE  " . $work_table . "
						        SET accepted = 0";
		Database::query($sql);
		Display::display_confirmation_message(get_lang('AllFilesInvisible'));
	} else {
		$sql = "UPDATE  " . $work_table . "
						        SET accepted = 0
								WHERE id = '" . $make_invisible . "'";
		Database::query($sql);
		Display::display_confirmation_message(get_lang('FileInvisible'));
	}
}

/*	MAKE VISIBLE WORK COMMAND */

if (!empty($make_visible)) {
	if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
		api_not_allowed();
	}
	if (isset($make_visible) && $make_visible == 'all') {
		$sql = "ALTER TABLE  " . $work_table . "
						        CHANGE accepted accepted TINYINT(1) DEFAULT '1'";
		Database::query($sql);
		$sql = "UPDATE  " . $work_table . "
						        SET accepted = 1";
		Database::query($sql);
		Display::display_confirmation_message(get_lang('AllFilesVisible'));

		} else {
		$sql = "UPDATE  " . $work_table . "
						        SET accepted = 1
								WHERE id = '" . $make_visible . "'";
		Database::query($sql);
		Display::display_confirmation_message(get_lang('FileVisible'));
	}

	// update all the parents in the table item propery
	$list_id = get_parent_directories($my_cur_dir_path);
	for ($i = 0; $i < count($list_id); $i++) {
		api_item_property_update($_course, 'work', $list_id[$i], 'FolderUpdated', $user_id);
	}
}

/*	Create dir command */

if (!empty($_REQUEST['new_dir'])) {

	if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
		api_not_allowed();
	}

	function get_date_from_select($prefix) {
		return $_POST[$prefix.'_year'].'-'.two_digits($_POST[$prefix.'_month']).'-'.two_digits($_POST[$prefix.'_day']).' '.two_digits($_POST[$prefix.'_hour']).':'.two_digits($_POST[$prefix.'_minute']).':00';
	}

	$fexpire = get_date_from_select('expires');
	$fend =  get_date_from_select('ends');

	require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php';
	$added_slash = (substr($cur_dir_path, -1, 1) == '/') ? '' : '/';
	$directory = Security::remove_XSS($_POST['new_dir']);
	$directory = replace_dangerous_char($directory);
	$directory = disable_dangerous_file($directory);
	$dir_name = $cur_dir_path . $added_slash . $directory;
	$created_dir = create_unexisting_work_directory($base_work_dir, $dir_name);

	// we insert here the directory in the table $work_table
	$dir_name_sql = '';

	if ($ctok == $_POST['sec_token']) {
		if (!empty($created_dir)) {
			if ($cur_dir_path == '/') {
				$dir_name_sql = $created_dir;
			} else {
				$dir_name_sql = '/'.$created_dir;
			}

			// insert into agenda

			$agenda_id = 0;
			 if (isset($_POST['add_to_calendar']) && $_POST['add_to_calendar'] == 1) {
				require_once api_get_path(SYS_CODE_PATH).'calendar/agenda.inc.php';
				require_once api_get_path(SYS_CODE_PATH).'resourcelinker/resourcelinker.inc.php';
				$course = isset($course_info) ? $course_info : null;
				$content = '<a href="'.api_get_self().'?'.api_get_cidreq().'&amp;curdirpath='.substr(Security::remove_XSS($dir_name_sql), 1).'" >'.$_POST['new_dir'].'</a> - '.$_POST['description'];
				$agenda_id = agenda_add_item($course, $_POST['new_dir'], $content, date('Y-m-d H:i:s'), '0000-00-00', array('GROUP:'.$toolgroup), 0);
			 }
			$sql_add_publication = "INSERT INTO " . $work_table . " SET " .
										   "url         = '".Database::escape_string(Security::remove_XSS($dir_name_sql))."',
									       title        = '',
						                   description 	= '".Database::escape_string(Security::remove_XSS($_POST['description']))."',
						                   author      	= '',
										   active		= '0',
										   accepted		= '1',
										   filetype 	= 'folder',
										   post_group_id = '".$toolgroup."',
										   sent_date	= NOW(),
										   qualification	= '".(($_POST['qualification_value']!='') ? Database::escape_string($_POST['qualification_value']) : '') ."',
										   parent_id	= '',
										   qualificator_id	= '',
										   date_of_qualification	= '0000-00-00 00:00:00',
										   weight   = '".Database::escape_string(Security::remove_XSS($_POST['weight']))."',
										   session_id   = ".intval($id_session);

			Database::query($sql_add_publication);

			// add the directory
			$id = Database::insert_id();
			//Folder created
			api_item_property_update($_course, 'work', $id, 'DirectoryCreated', $user_id);
			Display :: display_confirmation_message(get_lang('DirectoryCreated'), false);
			//Database :: escape_string($_REQUEST['make_visible']);
			//if($_POST['type1']==1)
			//$insert_limite

			 // insert into student_publication_assignment

			//return something like this: 2008-02-45 00:00:00

			if (!empty($_POST['type1']) || !empty($_POST['type2'])) {

				$enable_calification = isset($_POST['enable_calification']) ? (int)$_POST['enable_calification'] : null;
				$sql_add_homework = "INSERT INTO $TSTDPUBASG SET " .
														   "expires_on         = '".((isset($_POST['type1']) && $_POST['type1']==1) ? get_date_from_select('expires') : '0000-00-00 00:00:00'). "',
													        ends_on        = '".((isset($_POST['type2']) && $_POST['type2']==1) ? get_date_from_select('ends') : '0000-00-00 00:00:00')."',
										                    add_to_calendar  = '$agenda_id',
										                    enable_qualification = '".$enable_calification."',
										                    publication_id = '".$id."'";
				Database::query($sql_add_homework);

				$sql_add_publication = "UPDATE ".$work_table." SET "."has_properties  = ".Database::insert_id().", view_properties = 1 ".' where id = '.$id;
				Database::query($sql_add_publication);

			} else {

				$sql_add_homework = "INSERT INTO $TSTDPUBASG SET " .
														   "expires_on         = '0000-00-00 00:00:00',
													        ends_on        = '0000-00-00 00:00:00',
										                    add_to_calendar  = '$agenda_id',
										                    enable_qualification = '".(isset($_POST['enable_calification'])?(int)$_POST['enable_calification']:'')."',
										                    publication_id = '".$id."'";
				Database::query($sql_add_homework);

				$sql_add_publication = "UPDATE ".$work_table." SET "."has_properties  = ".Database::insert_id().", view_properties = 0 ".' where id = '.$id;
				Database::query($sql_add_publication);

			}

			if (isset($_POST['make_calification']) && $_POST['make_calification'] == 1) {

				require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/gradebookitem.class.php';
				require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/evaluation.class.php';
				require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/abstractlink.class.php';
				require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/gradebook_functions.inc.php';

				$resource_name = (empty($_POST['qualification_name'])) ? $_POST['new_dir'] : $_POST['qualification_name'];
				add_resource_to_course_gradebook(api_get_course_id(), 3, $id, Database::escape_string($resource_name), $_POST['weight'], $_POST['qualification_value'], Database::escape_string($_POST['description']), time(), 1, api_get_session_id());

			}

			// end features

			// update all the parents in the table item propery
			$list_id = get_parent_directories($my_cur_dir_path);

			for ($i = 0; $i < count($list_id); $i++) {
				api_item_property_update($_course, 'work', $list_id[$i], 'FolderUpdated', $user_id);
			}

			//uncomment if you want to enter the created dir
			//$curdirpath = $created_dir;
			//$curdirpathurl = urlencode($curdirpath);
		} else {
			Display :: display_error_message(get_lang('CannotCreateDir'));
		}
	}
}

/*	Delete dir command */

if (!empty($_REQUEST['delete_dir'])) {

	if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
		api_not_allowed();
	}

	$delete_directory	= $_REQUEST['delete_dir'];
	$id					= $_REQUEST['delete2'];
	del_dir($base_work_dir . '/', $delete_directory, $id);

	Display :: display_confirmation_message(get_lang('DirDeleted') . ': '.$delete_directory);
}
if (!empty($_REQUEST['delete2'])) {

	if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
		api_not_allowed();
	}
	$delete_2 = intval($_REQUEST['delete2']);
	// gets calendar_id from student_publication_assigment
	$sql = "SELECT add_to_calendar FROM $TSTDPUBASG WHERE publication_id ='$delete_2'";
	$res = Database::query($sql);
	$calendar_id = Database::fetch_row($res);
	// delete from agenda if it exists
	if (!empty($calendar_id[0])) {
		$t_agenda   = Database::get_course_table(TABLE_AGENDA);
		$sql = "DELETE FROM $t_agenda WHERE id ='".$calendar_id[0]."'";
		Database::query($sql);
	}
	$sql2 = "DELETE FROM $TSTDPUBASG WHERE publication_id ='$delete_2'";
	$result2 = Database::query($sql2);
	$sql3 = "DELETE FROM $t_gradebook_link WHERE course_code='$course_code' AND ref_id='$delete_2'";
	$result3 = Database::query($sql3);
}

/*	Move file form request */

if (!empty ($_REQUEST['move'])) {
	$folders = array();
	$sql = "SELECT url FROM $work_table  WHERE url LIKE '/%' AND post_group_id = '".(empty($_SESSION['toolgroup'])?0:intval($_SESSION['toolgroup']))."'";
	$res = Database::query($sql);
	while($folder = Database::fetch_array($res)) {
		$folders[] = substr($folder['url'], 1, strlen($folder['url']) - 1);
	}
	echo build_work_move_to_selector($folders, $cur_dir_path, $_REQUEST['move']);
}

/*	Move file command */

if (isset ($_POST['move_to']) && isset ($_POST['move_file'])) {
	require_once api_get_path(LIBRARY_PATH).'fileManage.lib.php';
	$move_to = $_POST['move_to'];
	if ($move_to == '/' or empty ($move_to)) {
		$move_to = '';
	} elseif (substr($move_to, -1, 1) != '/') {
		$move_to = $move_to . '/';
	}

	//security fix: make sure they can't move files that are not in the document table
	if ($path = get_work_path($_POST['move_file'])) {
		//Display::display_normal_message('We want to move '.$_POST['move_file'].' to '.$_POST['move_to']);
		if (move($course_dir . '/' . $path, $base_work_dir . '/' . $move_to)) {
			//update db
			update_work_url(Security::remove_XSS($_POST['move_file']), 'work/' . $move_to);
			//set the current path
			$cur_dir_path = $move_to;
			$cur_dir_path_url = urlencode($move_to);

			// update all the parents in the table item propery
			$list_id = get_parent_directories($cur_dir_path);
			for ($i = 0; $i < count($list_id); $i++) {
				api_item_property_update($_course, 'work', $list_id[$i], 'FolderUpdated', $user_id);
			}

			Display :: display_confirmation_message(get_lang('DirMv'));
		} else {
			Display :: display_error_message(get_lang('Impossible'));
		}
	} else {
		Display :: display_error_message(get_lang('Impossible'));
	}
}

/*	COMMANDS SECTION (reserved for others - check they're authors each time) */

else {
	$iprop_table = Database :: get_course_table(TABLE_ITEM_PROPERTY);
	$user_id = api_get_user_id();

	/*	DELETE WORK COMMAND */

	if ($delete) {
		if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
			api_not_allowed();
		}
		if ($delete == 'all' && api_is_allowed_to_edit(null, true)) {

			$queryString1 = "SELECT url FROM ".$work_table."";
			$queryString2 = "DELETE FROM  ".$work_table."";
			$queryString3 = "DELETE FROM  ".$TSTDPUBASG. "";

			$sql_agenda = "SELECT add_to_calendar FROM ".$TSTDPUBASG." WHERE add_to_calendar <> 0";
			$rs_agenda = Database::query($sql_agenda);
			$t_agenda   = Database::get_course_table(TABLE_AGENDA);
			while ($row_agenda=Database::fetch_array($rs_agenda)) {
				$deleteagenda = "DELETE FROM  ".$t_agenda." WHERE id='".$row_agenda['add_to_calendar']."'";
				$rsdeleteagenda = Database::query($deleteagenda);

			}

			$result1 = Database::query($queryString1);
			$result2 = Database::query($queryString2);
			$result3 = Database::query($queryString3);

			$path = $currentCourseRepositorySys.'work/';
			$d = dir($path);

			if (api_get_setting('permanently_remove_deleted_files') == 'true') {
				while (false !== $entry = $d->read()) {
					if ($entry == '.' || $entry == '..') continue;
					rmdirr($path.$entry);
				}
			} else {
				while (false !== $entry = $d->read()) {
					if ($entry == '.' || $entry == '..' || substr($entry, 0, 8) == 'DELETED_') continue;
					$new_file = 'DELETED_'.$entry;
					rename($path.$entry, $path.$new_file);
				}
			}
		} else {
			//Get the author ID for that document from the item_property table
			$author_sql = "SELECT * FROM $iprop_table WHERE tool = 'work' AND insert_user_id='$user_id' AND ref=" .Database::escape_string($delete);
			$author_qry = Database::query($author_sql);

			if (Database :: num_rows($author_qry) == 1 AND api_get_course_setting('student_delete_own_publication') == 1 OR api_is_allowed_to_edit(null,true)) {
				//we found the current user is the author
				$queryString1 = "SELECT url FROM  " . $work_table . "  WHERE id = '$delete'";
				$queryString2 = "DELETE FROM  " . $work_table . "  WHERE id='$delete'";
				$queryString3 = "DELETE FROM  " . $TSTDPUBASG . "  WHERE publication_id='$delete'";

				$result1 = Database::query($queryString1);
				$result2 = Database::query($queryString2);
				$result3 = Database::query($queryString3);
				if ($result1) {
					api_item_property_update($_course, 'work', $delete, 'DocumentDeleted', $user_id);
					$row = Database::fetch_array($result1);
					$work = $row['url'];

					require_once api_get_path(LIBRARY_PATH).'fileManage.lib.php';
					$extension = pathinfo($work, PATHINFO_EXTENSION);
					$basename_file = basename($work, '.'.$extension);
					$new_dir = $work.'_DELETED_'.$delete.'.'.$extension;

					if (api_get_setting('permanently_remove_deleted_files') == 'true'){
						my_delete($currentCourseRepositorySys.'/'.$work);
					} else {
						rename($currentCourseRepositorySys.'/'.$work, $currentCourseRepositorySys.'/'.$new_dir);
					}
				}
				Display::display_confirmation_message(get_lang('TheDocumentHasBeenDeleted'));
			} else {
				Display::display_error_message(get_lang('YouAreNotAllowedToDeleteThisDocument'));
			}
		}
	}

	/*	EDIT COMMAND WORK COMMAND */

	if ($edit) {

		if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
			api_not_allowed();
		}

		//Get the author ID for that document from the item_property table
		$author_sql = "SELECT * FROM $iprop_table WHERE tool = 'work' AND insert_user_id='$user_id' AND ref=" . $edit;
		$author_qry = Database::query($author_sql);
		if (Database :: num_rows($author_qry) == 1) {
			//we found the current user is the author
			$sql = "SELECT * FROM  " . $work_table . "  WHERE id='" . $edit . "'";
			$result = Database::query($sql);
			if ($result) {
				$row = Database::fetch_array($result);
				$workTitle = $row['title'];
				$workAuthor = $row['author'];
				$workDescription = $row['description'];
				$workUrl = $row['url'];
				$qualification_number = $row['qualification'];
			}
		}
	}

}

/*	FORM SUBMIT PROCEDURE */

$error_message = '';

if ($ctok == $_POST['sec_token']) { //check the token inserted into the form
	if (!empty($_POST['submitWork']) && !empty($is_course_member)) {
		if (!empty($_FILES['file']['size'])) {
			$updir = $currentCourseRepositorySys . 'work/'; //directory path to upload

			// Try to add an extension to the file if it has'nt one
			$new_file_name = add_ext_on_mime(stripslashes($_FILES['file']['name']), $_FILES['file']['type']);

			// Replace dangerous characters
			$new_file_name = replace_dangerous_char($new_file_name, 'strict');

			// Transform any .php file in .phps fo security
			$new_file_name = php2phps($new_file_name);
			//filter extension
			if (!filter_extension($new_file_name)) {
				Display :: display_error_message(get_lang('UplUnableToSaveFileFilteredExtension'));
				$succeed = false;
			} else {
				if (!$title) {
					$title = $_FILES['file']['name'];
				}
				//if (!$authors) {
				$authors = api_get_person_name($currentUserFirstName, $currentUserLastName);
				//}
				// compose a unique file name to avoid any conflict
				$new_file_name = uniqid('') . $new_file_name;
				if (isset ($_SESSION['toolgroup'])) {
					$post_group_id = $_SESSION['toolgroup'];
				} else {
					$post_group_id = '0';
				}
				//if we come from the group tools the groupid will be saved in $work_table
				@move_uploaded_file($_FILES['file']['tmp_name'], $updir . $my_cur_dir_path . $new_file_name);
				$url = 'work/' . $my_cur_dir_path . $new_file_name;
				$result = Database::query("SHOW FIELDS FROM " . $work_table . " LIKE 'sent_date'");

				if (!Database::num_rows($result)) {
					Database::query("ALTER TABLE " . $work_table . " ADD sent_date DATETIME NOT NULL");
				}
				$current_date = date('Y-m-d H:i:s');
				$parent_id = '';
				$active = '';
				$sql = Database::query('SELECT id FROM '.Database::get_course_table(TABLE_STUDENT_PUBLICATION).' WHERE url = '."'/".Database::escape_string($_GET['curdirpath'])."' AND filetype='folder' LIMIT 1");
				if (Database::num_rows($sql) > 0) {
					$dir_row = Database::fetch_array($sql);
					$parent_id = $dir_row['id'];
				}
				$sql_add_publication = "INSERT INTO " . $work_table . " SET " .
										       "url         = '" . $url . "',
										       title       = '" . Database::escape_string(Security::remove_XSS($title)) . "',
							                   description = '" . Database::escape_string(Security::remove_XSS($description)) . "',
							                   author      = '" . Database::escape_string($authors) . "',
											   active		= '" . $active . "',
											   accepted		= '" . (api_is_allowed_to_edit(null,true)?$uploadvisibledisabled:(!$uploadvisibledisabled)) . "',
											   post_group_id = '" . $post_group_id . "',
											   sent_date	=  '".$current_date ."',
											   parent_id 	=  '".$parent_id ."' ,
	                                           session_id = ".intval($id_session);

				Database::query($sql_add_publication);

				$Id = Database::insert_id();
				api_item_property_update($_course, 'work', $Id, 'DocumentAdded', $user_id);
				$succeed = true;

				// update all the parents in the table item propery
				$list_id = get_parent_directories($my_cur_dir_path);
				for ($i = 0; $i < count($list_id); $i++) {
					api_item_property_update($_course, 'work', $list_id[$i], 'FolderUpdated', $user_id);
				}
			}

		} elseif ($newWorkUrl) {

			if (isset ($_SESSION['toolgroup'])) {
				$post_group_id = $_SESSION['toolgroup'];
			} else {
				$post_group_id = '0';
			}

			/*
			 * SPECIAL CASE ! For a work coming from another area (i.e. groups)
			 */
			$url = str_replace('../../' . $_course['path'] . '/', '', $newWorkUrl);

			if (!$title) {
				$title = basename($workUrl);
			}

			$result = Database::query("SHOW FIELDS FROM " . $work_table . " LIKE 'sent_date'");

			if (!Database::num_rows($result)) {
				Database::query("ALTER TABLE " . $work_table . " ADD sent_date DATETIME NOT NULL");
			}
			$current_date = date('Y-m-d H:i:s');
			$sql = "INSERT INTO  " . $work_table . "
					        	SET url        	= '" . $url . "',
					            title       	= '" . Database::escape_string(Security::remove_XSS($title)) . "',
					            description 	= '" . Database::escape_string(Security::remove_XSS($description)) . "',
					            author      	= '" . Database::escape_string($authors) . "',
							    post_group_id = '".$post_group_id."',
					            sent_date    	= '".$current_date."',
					            session_id = ".intval($id_session);

			Database::query($sql);

			$insertId = Database::insert_id();
			api_item_property_update($_course, 'work', $insertId, 'DocumentAdded', $user_id);
			$succeed = true;

			// update all the parents in the table item propery
			$list_id=get_parent_directories($my_cur_dir_path);
			for ($i = 0; $i < count($list_id); $i++) {
				api_item_property_update($_course, 'work', $list_id[$i], 'FolderUpdated', $user_id);
			}
		}

		/*
		 * SPECIAL CASE ! For a work edited
		 */

		else {
			//Get the author ID for that document from the item_property table
			$is_author = false;
			if ($id != '') {
				$author_sql = "SELECT * FROM $iprop_table WHERE tool = 'work' AND insert_user_id='$user_id' AND ref=" . Database::escape_string($id);

				$author_qry = Database::query($author_sql);
				if (Database :: num_rows($author_qry) == 1) {
					$is_author = true;
				}
			} else {
				Display::display_error_message(get_lang('IsNotPosibleSaveTheDocument'));
			}
			if ($id && ($is_allowed_to_edit or $is_author)) {
				if (!$title) {
					$title = basename($newWorkUrl);
				}

				if($is_allowed_to_edit && ($_POST['qualification']!='')) {
					$add_to_update = ',qualificator_id ='."'".api_get_user_id()."',";
					$add_to_update .= 'qualification ='."'".Database::escape_string($_POST['qualification'])."',";
					$add_to_update .= 'date_of_qualification ='."'".date('Y-m-d H:i:s')."'";
				}

				if ((int)$_POST['qualification'] > (int)$_POST['qualification_over']) {
					Display::display_error_message(get_lang('QualificationMustNotBeMoreThanQualificationOver'));
				} else {
					$sql = "UPDATE  " . $work_table . "
					        SET	title       = '" . Database::escape_string(Security::remove_XSS($title)) . "',
					            description = '" . Database::escape_string(Security::remove_XSS($description)) . "'
					            ".$add_to_update."
					        WHERE id    = '$id'";
					Database::query($sql);
				}

				$insertId = $id;
				api_item_property_update($_course, 'work', $insertId, 'DocumentUpdated', $user_id);
				$succeed = true;
			} else {
				$error_message = get_lang('TooBig');
			}
		}
	}
}

if (!empty($_POST['submitWork']) && !empty($succeed) && !$id) {
	//last value is to check this is not "just" an edit
	//YW Tis part serve to send a e-mail to the tutors when a new file is sent
	$send = api_get_course_setting('email_alert_manager_on_new_doc');

	if ($send > 0) {
		// Lets predefine some variables. Be sure to change the from address!

		$emailto = array ();
		if (empty ($id_session)) {
			$sql_resp = 'SELECT u.email as myemail FROM ' . $table_course_user . ' cu, ' . $table_user . ' u WHERE cu.course_code = ' . "'" . api_get_course_id() . "'" . ' AND cu.status = 1 AND u.user_id = cu.user_id';
			$res_resp = Database::query($sql_resp);
			while ($row_email = Database :: fetch_array($res_resp)) {
				if (!empty ($row_email['myemail'])) {
					$emailto[$row_email['myemail']] = $row_email['myemail'];
				}
			}
		} else {
			// coachs of the session
			$sql_resp = 'SELECT user.email as myemail
									FROM ' . $table_session . ' session
									INNER JOIN ' . $table_user . ' user
										ON user.user_id = session.id_coach
									WHERE session.id = ' . intval($id_session);
			$res_resp = Database::query($sql_resp);
			while ($row_email = Database :: fetch_array($res_resp)) {
				if (!empty ($row_email['myemail'])) {
					$emailto[$row_email['myemail']] = $row_email['myemail'];
				}
			}

			//coach of the course
			$sql_resp = 'SELECT user.email as myemail
									FROM ' . $table_session_course_user . ' scu
									INNER JOIN ' . $table_user . ' user
										ON user.user_id = scu.id_user AND scu.status=2
									WHERE scu.id_session = ' . intval($id_session);
			$res_resp = Database::query($sql_resp);
			while ($row_email = Database :: fetch_array($res_resp)) {
				if (!empty ($row_email['myemail'])) {
					$emailto[$row_email['myemail']] = $row_email['myemail'];
				}
			}
		}

		if (count($emailto) > 0) {

			$emailto = implode(',', $emailto);
			$emailfromaddr = api_get_setting('emailAdministrator');
			$emailfromname = api_get_setting('siteName');
			$emailsubject = "[" . api_get_setting('siteName') . "] ";
			$sender_name = api_get_setting('administratorName').' '.api_get_setting('administratorSurname');
		    $email_admin = api_get_setting('emailAdministrator');
			// The body can be as long as you wish, and any combination of text and variables

			$emailbody = get_lang('SendMailBody')."\n".get_lang('CourseName')." : ".$_course['name']."\n";
			$emailbody .= get_lang('WorkName')." : ".substr($my_cur_dir_path, 0, -1)."\n";
			$emailbody .= get_lang('UserName')." : ".$currentUserFirstName .' '.$currentUserLastName ."\n";
			$emailbody .= get_lang('DateSent')." : ".date('d/m/Y H:i')."\n";
			$emailbody .= get_lang('FileName')." : ".$title."\n\n".get_lang('DownloadLink')."\n";
			$emailbody .= api_get_path(WEB_CODE_PATH)."work/work.php?".api_get_cidreq()."&amp;curdirpath=".$my_cur_dir_path."\n\n" . api_get_setting('administratorName') . " " . api_get_setting('administratorSurname') . "\n" . get_lang('Manager') . " " . api_get_setting('siteName') . "\n" . get_lang('Email') . " : " . api_get_setting('emailAdministrator');
			// Here we are forming one large header line
			// Every header must be followed by a \n except the last
			@api_mail('', $emailto, $emailsubject, $emailbody, $sender_name,$email_admin);

			$emailbody_user = get_lang('Dear')." ".$currentUserFirstName .' '.$currentUserLastName ."\n";
			$emailbody_user .= get_lang('MessageConfirmSendingOfTask')."\n".get_lang('CourseName')." : ".$_course['name']."\n";
			$emailbody_user .= get_lang('WorkName')." : ".substr($my_cur_dir_path, 0, -1)."\n";
			$emailbody_user .= get_lang('DateSent')." : ".date('d/m/Y H:i')."\n";
			$emailbody_user .= get_lang('FileName')." : ".$title."\n\n".api_get_setting('administratorName')." ".api_get_setting('administratorSurname') . "\n" . get_lang('Manager') . " " . api_get_setting('siteName') . "\n" . get_lang('Email') . " : " . api_get_setting('emailAdministrator');;

			//Mail to user
			@api_mail('', $currentUserEmail, $emailsubject, $emailbody_user, $sender_name,$email_admin);

		}
	}
	$message = get_lang('DocAdd');
	if ($uploadvisibledisabled && !$is_allowed_to_edit) {
		$message .= "<br />" . get_lang('_doc_unvisible') . "<br />";
	}

	//stats
	if (!$Id) {
		$Id = $insertId;
	}
	event_upload($Id);
	$submit_success_message = $message . "<br />\n";
	Display :: display_confirmation_message($submit_success_message, false);
}

/*	Display links to upload form and tool options */

/*
$has_expired = false;
$has_ended = false;
isset($_GET['curdirpath'])?$curdirpath=Database::escape_string($_GET['curdirpath']):$curdirpath='';
$sql = Database::query('SELECT description,id FROM '.Database :: get_course_table(TABLE_STUDENT_PUBLICATION).' WHERE filetype = '."'folder'".' and has_properties != '."''".' and url = '."'/".$curdirpath."'".' LIMIT 1');
$is_special = Database::num_rows($sql);
*/
if ($is_special > 0) {
	$is_special = true;
	define('IS_ASSIGNMENT', 1);
	//$publication = Database::fetch_array($sql);
	$sql = Database::query('SELECT * FROM '.$TSTDPUBASG.' WHERE publication_id = '.(string)$publication['id'].' LIMIT 1');
	$homework = Database::fetch_array($sql);

	if ($homework['expires_on'] != '0000-00-00 00:00:00' || $homework['ends_on'] != '0000-00-00 00:00:00') {
		$time_now = convert_date_to_number(date('Y-m-d H:i:s'));
		$time_expires = convert_date_to_number($homework['expires_on']);
		$time_ends = convert_date_to_number($homework['ends_on']);
		$difference = $time_expires - $time_now;
		$difference2 = $time_ends - $time_now;
		if ($homework['expires_on'] != '0000-00-00 00:00:00' && $difference < 0) $has_expired = true;
		if ($homework['ends_on'] != '0000-00-00 00:00:00' && $difference2 < 0) $has_ended = true;
		if ($homework['expires_on'] == '0000-00-00 00:00:00') { $not_ends_on = true; }
		if (!$not_ends_on) {
			define('ASSIGNMENT_EXPIRES', $time_expires);
		}

		$ends_on = api_convert_and_format_date($homework['ends_on'], null, date_default_timezone_get());

		$expires_on = api_convert_and_format_date($homework['expires_on'], null, date_default_timezone_get());

		if ($has_ended) {
			display_action_links($cur_dir_path, $always_show_tool_options, true);
			Display :: display_error_message(get_lang('EndDateAlreadyPassed').' '.$ends_on);
		} elseif ($has_expired) {
			display_action_links($cur_dir_path, $always_show_tool_options, $always_show_upload_form);
			Display :: display_warning_message(get_lang('ExpiryDateAlreadyPassed').' '.$expires_on);
		} else {
			if (!$not_ends_on) {
				display_action_links($cur_dir_path, $always_show_tool_options, $always_show_upload_form);
				Display :: display_normal_message(get_lang('ExpiryDateToSendWorkIs').' '.$expires_on);
			}
		}
	} else {
		display_action_links($cur_dir_path, $always_show_tool_options, $always_show_upload_form);
	}
} else {
	display_action_links($cur_dir_path, $always_show_tool_options, $always_show_upload_form);
}

/*	Display form to upload document */

if ($is_course_member) {
	if (($display_upload_form || $edit)&&!$has_ended) {

		if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
			api_not_allowed();
		}

		if ($edit) {
			//Get the author ID for that document from the item_property table
			$is_author = false;
			$author_sql = "SELECT * FROM $iprop_table WHERE tool = 'work' AND insert_user_id='$user_id' AND ref=" . $edit;
			$author_qry = Database::query($author_sql);
			if (Database :: num_rows($author_qry) == 1) {
				$is_author = true;
			}
		}

		//require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
		require_once (api_get_path(LIBRARY_PATH).'fileDisplay.lib.php');

		$form = new FormValidator('form', 'POST', api_get_self() . "?curdirpath=" . rtrim(Security :: remove_XSS($cur_dir_path),'/') . "&gradebook=".Security::remove_XSS($_GET['gradebook'])."&origin=$origin", '', 'enctype="multipart/form-data"');

		// form title
		if ($edit) {
			$form_title = get_lang('EditMedia');
		} else {
			$form_title = get_lang('UploadADocument');
		}
		$form->addElement('header', '', $form_title);

		if (!empty ($error_message)) {
			Display :: display_error_message($error_message);
		}
		$show_progress_bar = false;

		if ($submitGroupWorkUrl) {
			// For user comming from group space to publish his work
			$realUrl = str_replace($_configuration['root_sys'], $_configuration['root_web'], str_replace("\\", '/', realpath($submitGroupWorkUrl)));
			$form->addElement('hidden', 'newWorkUrl', $submitGroupWorkUrl);
			$text_document = & $form->addElement('text', 'document', get_lang('Document'));
			$defaults['document'] = '<a href="' . format_url($submitGroupWorkUrl) . '">' . $realUrl . '</a>';
			$text_document->freeze();
		} elseif ($edit && ($is_allowed_to_edit or $is_author)) {
			$workUrl = $currentCourseRepositoryWeb . $workUrl;
			$form->addElement('hidden', 'id', $edit);

			$html = '<div class="row">
								<div class="label">' . get_lang("Document") . '
								</div>
								<div class="formw">
									<a href="' . $workUrl . '">' . get_lang("ClickHereToDownloadTheFile") . '</a>
								</div>
					</div>';
			$form->addElement('html', $html);
		} else {
			// else standard upload option
			$form->addElement('file', 'file', get_lang('UploadADocument'), 'size="40" onchange="updateDocumentTitle(this.value)"');
			$show_progress_bar = true;
		}

		$titleWork = $form->addElement('text', 'title', get_lang('TitleWork'), 'id="file_upload"  style="width: 350px;"');
		$defaults['title'] = $edit ? stripslashes($workTitle) : stripslashes($title);

		//Removed to avoid incoherences
		//$titleAuthors = $form->addElement('text', 'authors', get_lang("Authors"), 'style="width: 350px;"');

		//if (empty ($authors)) {
		$authors = api_get_person_name($_user['firstName'], $_user['lastName']);
		//}

		//$defaults["authors"] = ($edit ? stripslashes($workAuthor) : stripslashes($authors));
		$titleAuthors = $form->addElement('textarea', 'description', get_lang("Description"), 'style="width: 350px; height: 60px;"');
		$defaults["description"] = ($edit ? stripslashes($workDescription) : stripslashes($description));

		if ($is_allowed_to_edit && !empty($edit) && !empty($parent_id)) {
			// Get qualification from parent_id that'll allow the validation qualification over
			$sql = "SELECT qualification FROM $work_table WHERE id='$parent_id'";
			$result = Database::query($sql);
			$row = Database::fetch_array($result);
			$qualification_over = $row['qualification'];
			$form->addElement('text', 'qualification', get_lang('Qualification'), 'size="10"');
			$form->addElement('html', '<div style="margin-left:20%">'.get_lang('QualificationOver').'&nbsp;:&nbsp;'.$qualification_over.'</div>');
			$form->addElement('hidden', 'qualification_over', $qualification_over);
		}

		$defaults['qualification'] = $qualification_number;//($edit ? stripslashes($qualification_number) : stripslashes($qualification_number));
		$form->addElement('hidden', 'active', 1);
		$form->addElement('hidden', 'accepted', 1);
		$form->addElement('hidden', 'sec_token', $stok);

		if (isset($_GET['edit'])) {
			$text = get_lang('UpdateWork');
			$class = 'save';
		} else {
			$text = get_lang('SendWork');
			$class = 'upload';
		}

		// fix the Ok button when we see the tool in the learn path
		if ($origin == 'learnpath') {
			$form->addElement('html', '<div style="margin-left:137px">');
			$form->addElement('style_submit_button', 'submitWork', $text, array('class="'.$class.'"', 'value="submitWork"'));
			$form->addElement('html', '</div>');
		} else {
			//$form->addElement('submit','submitWork', get_lang('SendFile'));
			$form->addElement('style_submit_button', 'submitWork', $text, array('class="'.$class.'"', 'value="submitWork"'));
		}

		if (!empty($_POST['submitWork']) || $edit) {
			$form->addElement('style_submit_button', 'cancelForm', get_lang('Cancel'), 'class="cancel"');
		}

		if ($show_progress_bar) {
			$form->add_real_progress_bar('uploadWork', 'file');
		}

		$form->setDefaults($defaults);
		//$form->addRule('file', '<div class="required">'.get_lang('ThisFieldIsRequired'), 'required');
		$form->display();

	}


	//show them the form for the directory name
	if (isset($_REQUEST['createdir']) && $is_allowed_to_edit) {
		//create the form that asks for the directory name
		$new_folder_text = '<form name="form1"  method="POST">';
		$new_folder_text .= '<div class="row"><div class="form_header">'.get_lang('CreateAssignment').'</div></div>';
		$new_folder_text .= '<input type="hidden" name="curdirpath" value="' . Security :: remove_XSS($cur_dir_path) . '"/>';
		$new_folder_text .= '<input type="hidden" name="sec_token" value="'.$stok.'" />';
		$new_folder_text .= '<div class="row">
								<div class="label">
									<span class="form_required">*</span> '.get_lang('AssignmentName').'
								</div>
								<div class="formw">
									<div id="msg_error1" style="display:none;color:red"></div>
									<input type="text" id="work_title" name="new_dir" onfocus="document.getElementById(\'msg_error1\').style.display=\'none\';"/>
								</div>
							</div>';
		//$new_folder_text .= '<button type="button" name="create_dir" class="add" onClick="validate();" value="' . get_lang('Ok') . '"/>'.get_lang('CreateDirectory').'</button>';

		//new additional fields inside the "if condition" just to agroup
		if(true):

		$new_folder_text .= '<div class="row">
								<div class="label">
									'.get_lang('Description').'
								</div>
								<div class="formw">
									<textarea name="description" rows="4" cols="70"></textarea>
								</div>
							</div>';

		// Advanced parameters
		$addtext .='<div id="options" style="display: none;">';
		$addtext .= '<div style="padding:10px">';
		$addtext .= '<b>'.get_lang('QualificationOfAssignment').'</b>';
		$addtext .= '<table cellspacing="0" cellpading="0" border="0"><tr>';
		$addtext .= '<td colspan="2">&nbsp;&nbsp;'.get_lang('QualificationNumberOver').'&nbsp;';
		$addtext .= '<input type="text" name="qualification_value" value="" size="5"/></td><tr><td colspan="2">';
		$addtext .= '<input type="checkbox" value="1" name="make_calification" onclick="if(this.checked==true){document.getElementById(\'option1\').style.display=\'block\';}else{document.getElementById(\'option1\').style.display=\'none\';}"/>'.get_lang('MakeQualifiable').'</td></tr><tr>';
		$addtext .= '<td colspan="2"><div id="option1" style="display:none">';
		$addtext .= '<div id="msg_error_weight" style="display:none;color:red"></div>';
		$addtext .=	'&nbsp;&nbsp;'.get_lang('WeightInTheGradebook').'&nbsp;';
		$addtext .= '<input type="text" name="weight" value="" size="5" onfocus="document.getElementById(\'msg_error_weight\').style.display=\'none\';"/></div></td></tr>';
		$addtext .= '</tr></table>';
		$addtext .= '<br />';
		$addtext .= '<b>'.get_lang('DatesAvailables').'</b><br />';
		$addtext .= '<input type="checkbox" value="1" name="type1" onclick="if(this.checked==true){document.getElementById(\'option2\').style.display=\'block\';}else{document.getElementById(\'option2\').style.display=\'none\';}"/>'.get_lang('EnableExpiryDate').'';
		$addtext .= '&nbsp;&nbsp;&nbsp;<span id="msg_error2" style="display:none;color:red"></span>';
		$addtext .= '&nbsp;&nbsp;&nbsp;<span id="msg_error3" style="display:none;color:red"></span>';
		$addtext .= '<div id="option2" style="padding:4px;display:none">&nbsp;&nbsp;';
		$addtext .= draw_date_picker('expires').'</div>';
		$addtext .= '<br /><input type="checkbox" value="1" name="type2" onclick="if(this.checked==true){document.getElementById(\'option3\').style.display=\'block\';}else{document.getElementById(\'option3\').style.display=\'none\';}"/>'.get_lang('EnableEndDate').'';
		$addtext .= '<div id="option3" style="padding:4px;display:none">';
		$addtext .= '&nbsp;&nbsp;&nbsp;<div id="msg_error4" style="display:none;color:red"></div>';
		$addtext .= draw_date_picker('ends').'<br />';
		$addtext .= '</div>';
		$addtext .= '<br /><br /><b>'.get_lang('Agenda').'</b><br />';
		$addtext .= '&nbsp;&nbsp;'.make_checkbox('add_to_calendar').get_lang('AddToCalendar').'</div>';
		$addtext .= '</div>';

		$new_folder_text .= '<div class="row">
								<div class="label">

								</div>
								<div class="formw"><a href="javascript: void(0);" onclick="javascript: return plus();"><span id="plus">'.Display::return_icon('div_show.gif',get_lang('AdvancedParameters'), array('style' => 'vertical-align:center')).' '.get_lang('AdvancedParameters').'</span></a><br />
									'.$addtext.'
								</div>
							</div>';


		endif;

		$new_folder_text .= '<div class="row">
								<div class="label">
								</div>
								<div class="formw">
									<button type="button" class="add" name="create_dir" onClick="javascript: validate();" value="' . addslashes(get_lang('CreateDirectory')) . '"/>' . addslashes(get_lang('ButtonCreateAssignment')) . '</button>
								</div>
							</div>';


		$new_folder_text .= '</form>';
		//show the form
		echo $new_folder_text;
	}
} else {
	//the user is not registered in this course
	echo '<p style="font-weight:bold">' . get_lang('MustBeRegisteredUser') . '</p>';
}

/*	Display of tool options */

if ($display_tool_options) {
	display_tool_options($uploadvisibledisabled, $origin, $base_work_dir, $cur_dir_path, $cur_dir_path_url);
}

/*	Display list of student publications */

if ($cur_dir_path == '/') {
	$my_cur_dir_path = '';
} else {
	$my_cur_dir_path = $cur_dir_path;
}

if (!$display_upload_form && !$display_tool_options) {
	$add_query = '';
	$sql = "SELECT user.firstname, user.lastname FROM $table_user user, $table_course_user course_user
			  WHERE course_user.user_id=user.user_id AND course_user.course_code='".api_get_course_id()."' AND course_user.status='1'";
	$res = Database::query($sql);
	$admin_course = '';
	while ($row = Database::fetch_row($res)) {
		$admin_course .='\''.api_get_person_name($row[0], $row[1]).'\',';
	}
	if (!$is_allowed_to_edit && $is_special) {
		$add_query = ' AND author IN('.$admin_course.'\''.api_get_person_name($_user['firstName'], $_user['lastName']).'\')';
	}
	if ($is_allowed_to_edit && $is_special) {

		if (!empty($_REQUEST['filter'])) {
			switch($_REQUEST['filter']) {
				case 1:
					$add_query = ' AND qualification = '."''";
					break;
				case 2:
					$add_query = ' AND qualification != '."''";
					break;
				case 3:
					$add_query = ' AND sent_date < '."'".$homework['expires_on']."'";
					break;
				default:
			 		$add_query = '';
			}
		}
		$cidreq = isset($_GET['cidreq']) ? Security::remove_XSS($_GET['cidreq']) : '';
		$curdirpath = isset($_GET['curdirpath']) ? Security::remove_XSS($_GET['curdirpath']) : '';
		$filter = isset($_REQUEST['filter']) ? (int)$_REQUEST['filter'] : '';

		if ($origin != 'learnpath') {
			$form_filter = '<form method="post" action="'.api_get_self().'?cidReq='.$cidreq.'&curdirpath='.$curdirpath.'&gradebook='.$gradebook.'">';
			$form_filter .= make_select('filter', array(0 => get_lang('SelectAFilter'), 1 => get_lang('FilterByNotRevised'), 2 => get_lang('FilterByRevised'), 3 => get_lang('FilterByNotExpired')), $filter).'&nbsp&nbsp';
			$form_filter .= '<button type="submit" class="save" value="'.get_lang('FilterAssignments').'">'.get_lang('FilterAssignments').'</button></form>';
			echo $form_filter;

		}
	}

	if (!empty($publication['description'])) {
			echo '<div class="actions">';
			echo '<br /><b>'.get_lang('Description').':</b>&nbsp;&nbsp;'.$publication['description'].'<br /><br />';
			echo '</div>';
	}
	if ($display_list_users_without_publication) {
		display_list_users_without_publication($publication['id']);
	} else {
		display_student_publications_list($base_work_dir . '/' . $my_cur_dir_path, 'work/' . $my_cur_dir_path, $currentCourseRepositoryWeb, $link_target_parameter, $dateFormatLong, $origin,$add_query);
	}
}

/*	Footer */

if ($origin != 'learnpath') {
	//we are not in the learning path tool
	Display :: display_footer();
}


/*	Some functions */

function make_select($name, $values, $checked = '') {
	$output = '<select name="'.$name.'" id="'.$name.'">';
 	foreach($values as $key => $value) {
 		$output .= '<option value="'.$key.'" '.(($checked==$key) ? 'selected="selected"' : '').'>'.$value.'</option>';
 	}
 	$output .= '</select>';
 	return $output;
}

function make_checkbox($name, $checked = '') {
	return '<input type="checkbox" value="1" name="'.$name.'" '.((!empty($checked))?'checked="checked"':'').'/>';
}

function draw_date_picker($prefix, $default = '') {
	//$default = 2008-10-01 10:00:00
	if (empty($default)) {
		$default = date('Y-m-d H:i:s');
	}
	$parts = split(' ', $default);
	list($d_year, $d_month, $d_day) = split('-', $parts[0]);
	list($d_hour, $d_minute) = split(':', $parts[1]);

	$minute = range(10, 59);
	array_unshift($minute, '00', '01', '02', '03', '04', '05', '06', '07', '08', '09');
	$date_form = make_select($prefix.'_day', array_combine(range(1, 31), range(1, 31)), $d_day);
	$date_form .= make_select($prefix.'_month', array_combine(range(1, 12), api_get_months_long()), $d_month);
	$date_form .= make_select($prefix.'_year', array($d_year => $d_year, $d_year + 1 => $d_year + 1), $d_year).'&nbsp;&nbsp;&nbsp;&nbsp;';
	$date_form .= make_select($prefix.'_hour', array_combine(range(0, 23), range(0, 23)), $d_hour).' : ';
	$date_form .= make_select($prefix.'_minute', $minute, $d_minute);
	return $date_form;
}