<?php
/* For licensing terms, see /license.txt */
/**
 * Create a backup.
 *
 * @author Bart Mollet <bart.mollet@hogent.be>
 * @package chamilo.backup
 */
/**
 * Code
 */
// Language files that need to be included
$language_file = array('exercice', 'admin', 'coursebackup');

// Including the global initialization file
require_once '../inc/global.inc.php';
$current_course_tool  = TOOL_COURSE_MAINTENANCE;

api_protect_course_script(true);

api_check_archive_dir();

// Check access rights (only teachers are allowed here)
if (!api_is_allowed_to_edit()) {
	api_not_allowed(true);
}

// Remove memory and time limits as much as possible as this might be a long process...
if (function_exists('ini_set')) {
	ini_set('memory_limit', '256M');
	ini_set('max_execution_time', 1800);
}

// Section for the tabs
$this_section = SECTION_COURSES;

// Breadcrumbs
$interbreadcrumb[] = array('url' => '../course_info/maintenance.php', 'name' => get_lang('Maintenance'));

// Displaying the header
$nameTools = get_lang('CreateBackup');
Display::display_header($nameTools);

// Include additional libraries
require_once api_get_path(LIBRARY_PATH).'fileManage.lib.php';
require_once 'classes/CourseBuilder.class.php';
require_once 'classes/CourseArchiver.class.php';
require_once 'classes/CourseRestorer.class.php';
require_once 'classes/CourseSelectForm.class.php';

// Display the tool title
echo Display::page_header($nameTools);

/*	MAIN CODE */

if ((isset($_POST['action']) && $_POST['action'] == 'course_select_form') || (isset($_POST['backup_option']) && $_POST['backup_option'] == 'full_backup')) {
	if (isset ($_POST['action']) && $_POST['action'] == 'course_select_form') {
		$course = CourseSelectForm::get_posted_course();        
	} else {
		$cb = new CourseBuilder();
		$course = $cb->build();
	}
	$zip_file = CourseArchiver::write_course($course); 
	Display::display_confirmation_message(get_lang('BackupCreated'));
	echo '<br /><a class="btn btn-primary btn-large" href="../course_info/download.php?archive='.$zip_file.'">'.get_lang('Download').'</a>';

} elseif (isset($_POST['backup_option']) && $_POST['backup_option'] == 'select_items') {
	$cb = new CourseBuilder('partial');
	$course = $cb->build();
	CourseSelectForm::display_form($course);
} else {
	$cb = new CourseBuilder();
	$course = $cb->build();
	if (!$course->has_resources()) {
		echo get_lang('NoResourcesToBackup');
	} else {		
		
		$form = new FormValidator('create_backup_form', 'post');
		$form->addElement('header',get_lang('SelectOptionForBackup'));
		
		$form->addElement('radio', 'backup_option', '', get_lang('CreateFullBackup'), 'full_backup');
		$form->addElement('radio', 'backup_option', '',  get_lang('LetMeSelectItems'), 'select_items');
		
		$form->addElement('style_submit_button', null, get_lang('CreateBackup'), 'class="save"');

		$form->add_progress_bar();
		// When progress bar appears we have to hide the title "Please select a backup-option".
		$form->updateAttributes(array('onsubmit' => str_replace('javascript: ', 'javascript: page_title = getElementById(\'page_title\'); if (page_title) { setTimeout(\'page_title.style.display = \\\'none\\\';\', 2000); } ', $form->getAttribute('onsubmit'))));

		$values['backup_option'] = 'full_backup';
		$form->setDefaults($values);
		$form->display();
	}
}

/*	FOOTER */
Display::display_footer();