Message airnotifier send_message callback

message_airnotifier.php

<?php
    public function send_message($eventdata) {
        global $CFG;
        require_once($CFG->libdir . '/filelib.php');

        if (!empty($CFG->noemailever)) {
            // Hidden setting for development sites, set in config.php if needed.
            debugging('$CFG->noemailever active, no airnotifier message sent.', DEBUG_MINIMAL);
            return true;
        }

        // Skip any messaging suspended and deleted users.
        if ($eventdata->userto->auth === 'nologin' or
            $eventdata->userto->suspended or
            $eventdata->userto->deleted) {
            return true;
        }

        // Site id, to map with Moodle Mobile stored sites.
        $siteid = md5($CFG->wwwroot . $eventdata->userto->username);

        // Airnotifier can handle custom requests using processors (that are Airnotifier plugins).
        // In the extra parameter we indicate which processor to use and also additional data to be handled by the processor.
        // Here we clone the eventdata object because will be deleting/adding attributes.
        $extra = clone $eventdata;

        // Delete attributes that may content private information.
        if (!empty($eventdata->userfrom)) {
            $extra->userfromid = $eventdata->userfrom->id;
            $extra->userfromfullname = fullname($eventdata->userfrom);
            unset($extra->userfrom);
        }
        $extra->usertoid = $eventdata->userto->id;
        unset($extra->userto);

        $extra->processor = 'moodle';
        $extra->site = $siteid;
        $extra->date             = (!empty($eventdata->timecreated)) ? $eventdata->timecreated : time();
        $extra->notification     = (!empty($eventdata->notification)) ? '1' : '0';

        // We are sending to message to all devices.
        $airnotifiermanager = new message_airnotifier_manager();
        $devicetokens = $airnotifiermanager->get_user_devices($CFG->airnotifiermobileappname, $eventdata->userto->id);

        foreach ($devicetokens as $devicetoken) {

            if (!$devicetoken->enable) {
                continue;
            }

            // Sending the message to the device.
            $serverurl = $CFG->airnotifierurl . ':' . $CFG->airnotifierport . '/notification/';
            $header = array('Accept: application/json', 'X-AN-APP-NAME: ' . $CFG->airnotifierappname,
                'X-AN-APP-KEY: ' . $CFG->airnotifieraccesskey);
            $curl = new curl;
            $curl->setHeader($header);

            $params = array(
                'device'    => $devicetoken->platform,
                'token'     => $devicetoken->pushid,
                'extra'     => $extra
            );

            // JSON POST raw body request.
            $resp = $curl->post($serverurl, json_encode($params));
        }

        return true;
    }