// 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/>.
/**
* This script is a quick 'n' dirty list of Instructor queues, who's online,
* and meeting links.
*
* @package block_helpmenow
* @copyright 2012 VLACS
* @author David Zaharee <*****@*****.**>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once dirname(dirname(dirname(__FILE__))) . '/config.php';
require_once dirname(__FILE__) . '/lib.php';
helpmenow_plugin::get_plugins();
# require login
require_login(0, false);
# contexts and cap check
$context = context_system::instance();
$admin = has_capability(HELPMENOW_CAP_MANAGE, $context);
if (!($admin or $DB->record_exists('block_helpmenow_helper', array('userid' => $USER->id)))) {
redirect();
}
$PAGE->set_context($context);
$PAGE->set_url('/blocks/helpmenow/hallway.php');
$PAGE->set_pagelayout('standard');
# title, navbar, and a nice box
if (!empty($CFG->helpmenow_title)) {
$blockname = $CFG->helpmenow_title;
} else {
function get_content()
{
global $OUTPUT;
if ($this->content !== NULL) {
return $this->content;
}
global $CFG, $USER, $SESSION, $DB;
$this->content = (object) array('text' => '', 'footer' => '');
$this->content->text .= '<noscript>' . get_string('noscript', 'block_helpmenow') . '</noscript>';
# the first time a user loads the block this session try to popout
helpmenow_clean_sessions();
# clean up users sessions
$popout_url = "{$CFG->wwwroot}/blocks/helpmenow/popout.php";
$contact_list = helpmenow_contact_list::get_plugin();
$contact_list::update_contacts($USER->id);
# do stuff that stuff that should be done when a user first logs in
if (!isset($SESSION->helpmenow_first_load)) {
$SESSION->helpmenow_first_load = true;
# try to popout the interface (except if the user is not logged in)
if (!empty($USER->id)) {
$this->content->text .= <<<EOF
<script>
try {
var popout = window.open('', 'hmn_popout', 'menubar=0,location=0,scrollbars,resizable,width=250,height=400');
if (popout.location.href == "about:blank" || typeof popout.location === 'undefined') {
popout.location = "{$popout_url}";
}
} catch (error) {
}
</script>
EOF;
}
# update the users contacts
}
$this->content->text .= helpmenow_block_interface();
$break = false;
if ($contact_list_display = $contact_list::block_display()) {
$this->contect->footer .= $contact_list_display;
$break = true;
}
# admin link
$sitecontext = context_system::instance();
if (has_capability(HELPMENOW_CAP_MANAGE, $sitecontext)) {
$admin = "{$CFG->wwwroot}/blocks/helpmenow/admin/manage_queues.php";
$admin_text = get_string('admin_link', 'block_helpmenow');
if ($break) {
$this->content->footer .= "<br />";
} else {
$break = true;
}
$this->content->footer .= "<a href='{$admin}'>{$admin_text}</a>";
}
# "hallway" link
if (has_capability(HELPMENOW_CAP_MANAGE, $sitecontext) or $DB->record_exists('block_helpmenow_helper', array('userid' => $USER->id))) {
$who = get_string('who', 'block_helpmenow');
if ($break) {
$this->content->footer .= "<br />";
} else {
$break = true;
}
$this->content->footer .= "<a href='{$CFG->wwwroot}/blocks/helpmenow/hallway.php'>{$who}</a>";
}
# Chat histories link
$chathistories = get_string('chathistories', 'block_helpmenow');
if ($break) {
$this->content->footer .= "<br />";
} else {
$break = true;
}
$chat_history_url = new moodle_url("{$CFG->wwwroot}/blocks/helpmenow/chathistorylist.php");
$chat_history_url->param('userid', $USER->id);
$this->content->footer .= "<a href=" . $chat_history_url->out() . ">{$chathistories}</a>";
if ($contact_list::is_admin_or_teacher()) {
# call plugin methods to check for additional display information
foreach (helpmenow_plugin::get_plugins() as $pluginname) {
$class = "helpmenow_plugin_{$pluginname}";
if ($plugindisplay = $class::block_display()) {
if ($break) {
$this->content->footer .= "<br />";
} else {
$break = true;
}
$this->content->footer .= $plugindisplay;
}
}
}
$this->content->footer .= <<<EOF
<div id="helpmenow_last_refresh_div"></div>
<div class="helpmenow_textalignright">
<div class="helpmenow_floatleft">
<a href="javascript:void(0)" onclick="helpmenow.chime();">
<img src="{$CFG->wwwroot}/blocks/helpmenow/media/Bell.png" />
</a>
</div>
EOF;
$popout = get_string('popout', 'block_helpmenow');
$action = new popup_action('click', $popout_url, 'hmn_popout', array('height' => 400, 'width' => 250));
$this->content->footer .= $OUTPUT->action_link($popout_url, $popout, $action) . '</div>';
return $this->content;
}
} else {
# instructor
$DB->update_record('block_helpmenow_user', $record);
helpmenow_log($USER->id, 'updated block_helpmenow_user', "{$record->isloggedin}");
}
/**
* handle plugins' on_login/on_logout
*
* plugins that return true don't need anymore
* plugins that return a string are giving us a url to redirect too
*
* if multiple plugins give us a url to redirect to, we're going to have have
* to handle that by presenting links to the user instead of auto redirecting
*/
$redirects = array();
foreach (helpmenow_plugin::get_plugins() as $pluginname) {
$class = "helpmenow_plugin_{$pluginname}";
$method = $login ? 'on_login' : 'on_logout';
if (!method_exists($class, $method)) {
continue;
}
$returned = $class::$method();
if (!is_bool($returned)) {
$redirects[$pluginname] = $returned;
}
}
if (count($redirects) == 0) {
helpmenow_fatal_error(get_string('may_close', 'block_helpmenow'), true, true);
}
if (count($redirects) == 1) {
redirect(reset($redirects));
/**
* plugin functions
*
* @param object $request request from client
* @param object $response response
*/
function helpmenow_serverfunc_plugin($request, &$response)
{
$plugin = $request->plugin;
$class = "helpmenow_plugin_{$plugin}";
$plugin_function = $request->plugin_function;
if (!in_array($plugin, helpmenow_plugin::get_plugins())) {
throw new Exception('Unknown plugin');
}
if (!in_array($plugin_function, $class::get_ajax_functions())) {
throw new Exception('Unknown function');
}
$response = (object) array_merge((array) $response, (array) $plugin_function($request));
}