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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/>.
/**
* This file defines an adhoc task to send notifications.
*
* @package tool_monitor
* @copyright 2014 onwards Ankit Agarwal <ankit.agrr@gmail.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace tool_monitor;
defined('MOODLE_INTERNAL') || die();
/**
* Adhock class, used to send notifications to users.
*
* @since Moodle 2.8
* @package tool_monitor
* @copyright 2014 onwards Ankit Agarwal <ankit.agrr@gmail.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class notification_task extends \core\task\adhoc_task {
/**
* Send out messages.
*/
public function execute() {
foreach ($this->get_custom_data() as $data) {
$eventobj = $data->event;
$subscriptionids = $data->subscriptionids;
foreach ($subscriptionids as $id) {
if ($message = $this->generate_message($id, $eventobj)) {
mtrace("Sending message to the user with id " . $message->userto->id . " for the subscription with id $id...");
message_send($message);
mtrace("Sent.");
}
}
}
}
/**
* Generates the message object for a give subscription and event.
*
* @param int $subscriptionid Subscription instance
* @param \stdClass $eventobj Event data
*
* @return false|\stdClass message object
*/
protected function generate_message($subscriptionid, \stdClass $eventobj) {
try {
$subscription = subscription_manager::get_subscription($subscriptionid);
} catch (\dml_exception $e) {
// Race condition, someone deleted the subscription.
return false;
}
$user = \core_user::get_user($subscription->userid);
if (empty($user)) {
// User doesn't exist. Should never happen, nothing to do return.
return false;
}
$context = \context_user::instance($user->id, IGNORE_MISSING);
if ($context === false) {
// User context doesn't exist. Should never happen, nothing to do return.
return false;
}
$template = $subscription->template;
$template = $this->replace_placeholders($template, $subscription, $eventobj, $context);
$htmlmessage = format_text($template, $subscription->templateformat, array('context' => $context));
$msgdata = new \core\message\message();
$msgdata->courseid = empty($subscription->courseid) ? SITEID : $subscription->courseid;
$msgdata->component = 'tool_monitor'; // Your component name.
$msgdata->name = 'notification'; // This is the message name from messages.php.
$msgdata->userfrom = \core_user::get_noreply_user();
$msgdata->userto = $user;
$msgdata->subject = $subscription->get_name($context);
$msgdata->fullmessage = html_to_text($htmlmessage);
$msgdata->fullmessageformat = FORMAT_PLAIN;
$msgdata->fullmessagehtml = $htmlmessage;
$msgdata->smallmessage = '';
$msgdata->notification = 1; // This is only set to 0 for personal messages between users.
return $msgdata;
}
/**
* Replace place holders in the template with respective content.
*
* @param string $template Message template.
* @param subscription $subscription subscription instance
* @param \stdclass $eventobj Event data
* @param \context $context context object
*
* @return mixed final template string.
*/
protected function replace_placeholders($template, subscription $subscription, $eventobj, $context) {
$template = str_replace('{link}', $eventobj->link, $template);
if ($eventobj->contextlevel == CONTEXT_MODULE && !empty($eventobj->contextinstanceid)
&& (strpos($template, '{modulelink}') !== false)) {
$cm = get_fast_modinfo($eventobj->courseid)->get_cm($eventobj->contextinstanceid);
$modulelink = $cm->url;
$template = str_replace('{modulelink}', $modulelink, $template);
}
$template = str_replace('{rulename}', $subscription->get_name($context), $template);
$template = str_replace('{description}', $subscription->get_description($context), $template);
$template = str_replace('{eventname}', $subscription->get_event_name(), $template);
return $template;
}
}