<?php
// $Id: system_announcements.php 15346 2008-05-21 15:20:11Z juliomontoya $
/*
==============================================================================
	Dokeos - elearning and course management software

	Copyright (c) 2004-2008 Dokeos SPRL
	Copyright (c) 2003 Ghent University (UGent)
	Copyright (c) 2001 Universite catholique de Louvain (UCL)
	Copyright (c) 2005 Bart Mollet, Hogeschool Gent

	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 address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
	Mail: info@dokeos.com
==============================================================================
*/
/**
==============================================================================
*	This page allows the administrator to manage the system announcements.
*	@package dokeos.admin
==============================================================================
*/
/*
==============================================================================
		INIT SECTION
==============================================================================
*/
// name of the language file that needs to be included
$language_file = array ('admin', 'agenda');

// resetting the course id
$cidReset = true;

// including some necessary dokeos files
include ('../inc/global.inc.php');
require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
include (api_get_path(LIBRARY_PATH).'system_announcements.lib.php');
include_once(api_get_path(LIBRARY_PATH).'WCAG/WCAG_rendering.php');
require_once (api_get_path(LIBRARY_PATH).'mail.lib.inc.php');

// setting the section (for the tabs)
$this_section=SECTION_PLATFORM_ADMIN;

// Access restrictions
api_protect_admin_script(true);

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

$tool_name = get_lang('SystemAnnouncements');

if(empty($_GET['lang']))
{
    $_GET['lang']=$_SESSION['user_language_choice'];
}

/*
-----------------------------------------------------------
	Header
-----------------------------------------------------------
*/
Display :: display_header($tool_name);

/*
==============================================================================
		MAIN CODE
==============================================================================
*/

if($_GET['action'] != 'add' && $_GET['action'] != 'edit')
{
	echo '<a href="?action=add">'.get_lang('AddAnnouncement').'</a>';
}
$form_action = "";
$show_announcement_list = true;
if (isset ($_GET['action']) && $_GET['action'] == 'make_visible')
{
	switch ($_GET['person'])
	{
		case VISIBLE_TEACHER :
			SystemAnnouncementManager :: set_visibility($_GET['id'], VISIBLE_TEACHER, true);
			break;
		case VISIBLE_STUDENT :
			SystemAnnouncementManager :: set_visibility($_GET['id'], VISIBLE_STUDENT, true);
			break;
		case VISIBLE_GUEST :
			SystemAnnouncementManager :: set_visibility($_GET['id'], VISIBLE_GUEST, true);
			break;
	}
}
if (isset ($_GET['action']) && $_GET['action'] == 'make_invisible')
{
	switch ($_GET['person'])
	{
		case VISIBLE_TEACHER :
			SystemAnnouncementManager :: set_visibility($_GET['id'], VISIBLE_TEACHER, false);
			break;
		case VISIBLE_STUDENT :
			SystemAnnouncementManager :: set_visibility($_GET['id'], VISIBLE_STUDENT, false);
			break;
		case VISIBLE_GUEST :
			SystemAnnouncementManager :: set_visibility($_GET['id'], VISIBLE_GUEST, false);
			break;
	}
}

// Form was posted?
if (isset ($_POST['action']))
{
	$action_todo = true;
}

// Delete an announcement
if (isset ($_GET['action']) && $_GET['action'] == 'delete')
{
	SystemAnnouncementManager :: delete_announcement($_GET['id']);
	Display :: display_normal_message(get_lang('AnnouncementDeleted'));
}
// Delete selected announcements
if (isset ($_POST['action']) && $_POST['action'] == 'delete_selected')
{
	foreach($_POST['id'] as $index => $id)
	{
		SystemAnnouncementManager :: delete_announcement($id);
	}
	Display :: display_normal_message(get_lang('AnnouncementDeleted'));
	$action_todo = false;
}
// Add an announcement
if (isset ($_GET['action']) && $_GET['action'] == 'add')
{
	$values['action'] = 'add';
	// Set default time window: NOW -> NEXT WEEK
	$values['start'] = date('Y-m-d H:i:s');
	$values['end'] = date('Y-m-d H:i:s',time() + (7 * 24 * 60 * 60));
	$action_todo = true;
}
// Edit an announcement
if (isset ($_GET['action']) && $_GET['action'] == 'edit')
{
	$announcement = SystemAnnouncementManager :: get_announcement($_GET['id']);
	$values['id'] = $announcement->id;
	$values['title'] = $announcement->title;
	$values['content'] = $announcement->content;
	$values['start'] = $announcement->date_start;
	$values['end'] = $announcement->date_end;
	$values['visible_teacher'] = $announcement->visible_teacher;
	$values['visible_student'] = $announcement->visible_student ;
	$values['visible_guest'] = $announcement->visible_guest ;
	$values['lang'] = $announcement->lang;
	$values['action'] = 'edit';
	$action_todo = true;
}

if ($action_todo)
{
	$form = new FormValidator('system_announcement');
	$form->add_textfield('title', get_lang('Title'));
	$language_list = api_get_languages();
	$language_list_with_keys = array();
	$language_list_with_keys['all'] = get_lang('All');
	for($i=0; $i<count($language_list['name']) ; $i++) {
		$language_list_with_keys[$language_list['folder'][$i]] = $language_list['name'][$i];
	}

	$fck_attribute['Width'] = '600';
	$fck_attribute['Height'] = '400';
	$fck_attribute['ToolbarSet'] = 'Middle';

	$form->addElement('select', 'lang',get_lang('Language'),$language_list_with_keys);
	if (api_get_setting('wcag_anysurfer_public_pages')=='true') {
		$form->addElement('textarea', 'content', get_lang('Content'));
	} else {
		$form->add_html_editor('content', get_lang('Content'));
	}
	$form->add_timewindow('start','end',get_lang('StartTimeWindow'),get_lang('EndTimeWindow'));
	$form->addElement('checkbox', 'visible_teacher', get_lang('Visible'), get_lang('Teacher'));
	$form->addElement('checkbox', 'visible_student', null, get_lang('Student'));
	$form->addElement('checkbox', 'visible_guest', null, get_lang('Guest'));
	$form->addElement('hidden', 'action');
	$form->addElement('hidden', 'id');
	$form->addElement('checkbox', 'send_mail', get_lang('SendMail'));
	$form->addElement('submit', 'submit', get_lang('Ok'));
	if (api_get_setting('wcag_anysurfer_public_pages')=='true')
	{
		$values['content'] = WCAG_Rendering::HTML_to_text($values['content']);
	}
	$form->setDefaults($values);
	if($form->validate())
	{
		$values = $form->exportValues();
		if( !isset($values['visible_teacher']))
		{
			$values['visible_teacher'] = false;
		}
		if( !isset($values['visible_student']))
		{
			$values['visible_student'] = false;
		}
		if( !isset($values['visible_guest']))
		{
			$values['visible_guest'] = false;
		}
		if($values['lang'] == 'all')
		{
			$values['lang'] = null;
		}
		if (api_get_setting('wcag_anysurfer_public_pages')=='true')
		{
			$values['content'] = WCAG_Rendering::text_to_HTML($values['content']);
		}
		switch($values['action'])
		{
			case 'add':
				if(SystemAnnouncementManager::add_announcement($values['title'],$values['content'],$values['start'],$values['end'],$values['visible_teacher'],$values['visible_student'],$values['visible_guest'], $values['lang'],$values['send_mail']))
				{
					Display :: display_normal_message(get_lang('AnnouncementAdded'));
				}
				else 
				{
					$show_announcement_list = false;
					$form->display();
				}
				break;
			case 'edit':
				if (SystemAnnouncementManager::update_announcement($values['id'],$values['title'],$values['content'],$values['start'],$values['end'],$values['visible_teacher'],$values['visible_student'],$values['visible_guest'], $values['lang'],$values['send_mail']))
				{
					Display :: display_normal_message(get_lang('AnnouncementUpdated'));
				}
				else
				{
					$show_announcement_list = false;
					$form->display();
				}
				break;
			default:
				break;
		}
		$show_announcement_list = true;
	}
	else
	{
		if (api_get_setting('wcag_anysurfer_public_pages')=='true')
		{
			echo('<div class="WCAG-form">');
		}
		$form->display();
		if (api_get_setting('wcag_anysurfer_public_pages')=='true')
		{
			echo('</div>');
		}
		$show_announcement_list = false;
	}
}
if ($show_announcement_list)
{
	$announcements = SystemAnnouncementManager :: get_all_announcements();
	$announcement_data = array ();
	foreach ($announcements as $index => $announcement)
	{
		$row = array ();
		$row[] = $announcement->id;
		$row[] = "<img src=\"../img/". ($announcement->visible ? 'visible.gif' : 'invisible.gif')."\"/>";
		$row[] = $announcement->date_start;
		$row[] = $announcement->date_end;
		$row[] = "<a href=\"?id=".$announcement->id."&amp;person=".VISIBLE_TEACHER."&amp;action=". ($announcement->visible_teacher ? 'make_invisible' : 'make_visible')."\"><img src=\"../img/". ($announcement->visible_teacher  ? 'visible.gif' : 'invisible.gif')."\" border=\"0\"></a>";
		$row[] = "<a href=\"?id=".$announcement->id."&amp;person=".VISIBLE_STUDENT."&amp;action=". ($announcement->visible_student  ? 'make_invisible' : 'make_visible')."\"><img src=\"../img/". ($announcement->visible_student ? 'visible.gif' : 'invisible.gif')."\" border=\"0\"></a>";
		$row[] = "<a href=\"?id=".$announcement->id."&amp;person=".VISIBLE_GUEST."&amp;action=". ($announcement->visible_guest ? 'make_invisible' : 'make_visible')."\"><img src=\"../img/". ($announcement->visible_guest  ? 'visible.gif' : 'invisible.gif')."\" border=\"0\"></a>";
		$row[] = $announcement->title;
		$row[] = $announcement->lang;
		$row[] = "<a href=\"?action=edit&id=".$announcement->id."\"><img src=\"../img/edit.gif\" border=\"0\"/></a> <a href=\"?action=delete&id=".$announcement->id."\"  onclick=\"javascript:if(!confirm('".addslashes(htmlentities(get_lang("ConfirmYourChoice"),ENT_QUOTES,$charset))."')) return false;\"><img src=\"../img/delete.gif\" border=\"0\"/></a>";
		$announcement_data[] = $row;
	}
	$table = new SortableTableFromArray($announcement_data);
	$table->set_header(0,'',false);
	$table->set_header(1,'', false);
	$table->set_header(2,get_lang('StartTimeWindow'));
	$table->set_header(3,get_lang('EndTimeWindow'));
	$table->set_header(4,get_lang('Teacher'));
	$table->set_header(5,get_lang('Student'));
	$table->set_header(6,get_lang('Guest'));
	$table->set_header(7,get_lang('Title'));
	$table->set_header(8,get_lang('Language'));
	$table->set_header(9,get_lang('Modify'), false);
	$form_actions = array();
	$form_actions['delete_selected'] = get_lang('Delete');
	$table->set_form_actions($form_actions);
	$table->display();
}
/*
==============================================================================
		FOOTER
==============================================================================
*/
Display :: display_footer();
?>