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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package moodlecore
* @subpackage backup-imscc
* @copyright 2011 Darko Miletic (dmiletic@moodlerooms.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');
class cc11_lti extends entities11 {
public function generate_node () {
cc2moodle::log_action('Creating BasicLTI mods');
$response = '';
if (!empty(cc2moodle::$instances['instances'][MOODLE_TYPE_LTI])) {
foreach (cc2moodle::$instances['instances'][MOODLE_TYPE_LTI] as $instance) {
$response .= $this->create_node_course_modules_mod_basiclti($instance);
}
}
return $response;
}
private function create_node_course_modules_mod_basiclti ($instance) {
$sheet_mod_basiclti = cc112moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_LTI);
$topic_data = $this->get_basiclti_data($instance);
$result = '';
if (!empty($topic_data)) {
$find_tags = array('[#mod_instance#]' ,
'[#mod_basiclti_name#]' ,
'[#mod_basiclti_intro#]' ,
'[#mod_basiclti_timec#]' ,
'[#mod_basiclti_timem#]' ,
'[#mod_basiclti_toolurl#]',
'[#mod_basiclti_icon#]'
);
$replace_values = array($instance['instance'],
$topic_data['title'],
$topic_data['description'],
time(),time(),
$topic_data['launchurl'],
$topic_data['icon']
);
$result = str_replace($find_tags, $replace_values, $sheet_mod_basiclti);
}
return $result;
}
protected function getValue($node, $default = '') {
$result = $default;
if (is_object($node) && ($node->length > 0) && !empty($node->item(0)->nodeValue)) {
$result = htmlspecialchars(trim($node->item(0)->nodeValue), ENT_COMPAT, 'UTF-8', false);
}
return $result;
}
public function get_basiclti_data($instance) {
$topic_data = '';
$basiclti_file = $this->get_external_xml($instance['resource_indentifier']);
if (!empty($basiclti_file)) {
$basiclti_file_path = cc2moodle::$path_to_manifest_folder . DIRECTORY_SEPARATOR . $basiclti_file;
$basiclti_file_dir = dirname($basiclti_file_path);
$basiclti = $this->load_xml_resource($basiclti_file_path);
if (!empty($basiclti)) {
$xpath = cc2moodle::newx_path($basiclti, cc112moodle::$basicltins);
$topic_title = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:title'),'Untitled');
$blti_description = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:description'));
$launch_url = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:launch_url'));
$launch_icon = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:icon'));
$tool_raw = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:code'),null);
$tool_url = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:url'),null);
$tool_desc = $this->getValue($xpath->query('/xmlns:cartridge_basiclti_link/blti:vendor/lticp:description'),null);
$topic_data['title' ] = $topic_title;
$topic_data['description'] = $blti_description;
$topic_data['launchurl' ] = $launch_url;
$topic_data['icon' ] = $launch_icon;
$topic_data['orgid' ] = $tool_raw;
$topic_data['orgurl' ] = $tool_url;
$topic_data['orgdesc' ] = $tool_desc;
}
}
return $topic_data;
}
}
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