$history_url = new moodle_url("{$CFG->wwwroot}/blocks/helpmenow/history.php#recent");
$history_url->param('session', $sessionid);
$history_url->param('date', '-1 year');
$action = new popup_action('click', $history_url->out(), $sessionid, array('height' => 400, 'width' => 500));
$history_link = $OUTPUT->action_link($history_url->out(), $history_name, $action);
$history_link = '<div>' . $history_link . '</div>';
} else {
$history_link = '';
}
$textarea_message = get_string('textarea_message', 'block_helpmenow');
# default text in chat input box
$jplayer = helpmenow_jplayer();
# jquery plugin for bell sound
$version = HELPMENOW_CLIENT_VERSION;
if ($history = helpmenow_get_history($sessionid)) {
$messages = helpmenow_format_messages($history);
foreach ($history as $m) {
$last_message = $m->id;
}
} else {
$messages = '';
$last_message = 0;
}
$messages = $history_link . $messages;
echo <<<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" >
<head>
<title>{$title}</title>
<link rel="stylesheet" type="text/css" href="{$CFG->wwwroot}/blocks/helpmenow/style/chat.css" />
/**
* chat refresh
*
* @param object $request request from client
* @param object $response response
*/
function helpmenow_serverfunc_refresh($request, &$response)
{
global $USER, $CFG, $DB;
$session2user = helpmenow_get_s2u($request->session);
# unless something has gone wrong, we should already have a response ready:
if ($request->last_message == $session2user->optimistic_last_message) {
$response_cache = json_decode($session2user->cache);
$response = (object) array_merge((array) $response, (array) $response_cache);
} else {
# unread messages
$messages = helpmenow_get_unread($request->session, $USER->id);
# todo: move this to the client
if ($messages) {
if (!isset($response->html)) {
$response->html = '';
}
$response->html .= helpmenow_format_messages($messages);
# determine if we need to beep
foreach ($messages as $m) {
if ($m->notify) {
$response->title_flash = format_string($m->message);
$response->beep = true;
}
$response->last_message = $m->id;
}
} else {
$response->last_message = $request->last_message;
}
}
if (!isset($response->last_message)) {
$response->last_message = null;
}
/**
* if there aren't any new messages check to see if we should add a "sent: _time_" message
*
* yes, it sucks, it's one of the many things todo: move to client
* -dzaharee
*/
if ($response->last_message == $request->last_message) {
$sql = "\n SELECT *\n FROM {block_helpmenow_message}\n WHERE id = (\n SELECT max(id)\n FROM {block_helpmenow_message}\n WHERE sessionid = {$request->session}\n )";
if ($last_message = $DB->get_record_sql($sql)) {
if (!is_null($last_message->userid) and $last_message->time < time() - 30) {
$message = get_string('sent', 'block_helpmenow') . ': ' . userdate($last_message->time, '%r');
helpmenow_message($request->session, null, $message, 0);
}
}
}
# update session2user
$session2user->last_message = $request->last_message;
$session2user->optimistic_last_message = $response->last_message;
$session2user->last_refresh = time();
$session2user->cache = json_encode((object) array('html' => '', 'beep' => false, 'last_message' => $request->last_message));
if (!$DB->update_record('block_helpmenow_session2user', $session2user)) {
$response->html = '';
$response->beep = false;
$response->last_message = $request->last_message;
throw new Exception('Could not update session2user record');
}
# call subplugin on_chat_refresh methods
foreach (helpmenow_plugin::get_plugins() as $pluginname) {
$class = "helpmenow_plugin_{$pluginname}";
$class::on_chat_refresh($request, $response);
}
}
