JAXL PHP XMPP Google Cloud Messages impl

sender.php

<?
/*
This uses JAXL lib  https://github.com/jaxl/JAXL/releases/tag/v3.0.0
Changes for JAXL lib are...

lib/jaxl/jaxl.php ~ #358
public function get_socket_path() { //Force ssl 
	return ($this->cfg['port'] == 5235 || $this->cfg['port'] == 5236 ? "ssl" : "tcp")."://".$this->cfg['host'].":".$this->cfg['port'];
}

lib/jaxl/xmpp/xmpp_stream.php
in function get_auth_pkt
$stanza->t(base64_encode( $user . chr(0) . substr($user,0,strpos($user,'@')) . chr(0) . $pass ));

Also This could be optimized with Threads f.x fetching and sending GCM in other (Worker Thread)


*/
include_once DR. 'lib/jaxl/jaxl.php';

class GCMSender{
	const SENDER_ID = "YOUR_SENDER_ID"; //Sender Id from google api console
	const SERVER_KEY = "YOUR_SERVER_KEY"; //Server key from google api console
	
	//Production server and port
	const HOST = "gcm.googleapis.com";
	const PORT = "5235";
	
	//DEV server and port
	//const HOST = 'gcm-preprod.googleapis.com';
	//const PORT = '5236';
	
	private $client;
	private $messagesSent = 0;
	private $messagesReceived = 0;
	
	public function __construct(){
		$this->client = new JAXL(array(
		     'jid'=> self::SENDER_ID .'@gcm.googleapis.com',
		     'pass'=> self::SERVER_KEY,
		     'auth_type'=> 'PLAIN',
		     'host' => self::HOST,
		     'port' => self::PORT, 
		     'strict' => false,
		     'force_tls' => true,
		     //'log_level' => JAXL_DEBUG
		));
		
		
		$this->client->add_cb('on_auth_success', function() { //We have been authorized to send all notifications to gcm threw xmpp
			echo "On Auth Success \n";
		  $this->client->set_status("available!", "dnd", 10);
			$this->sendMessages(); 
		});
		
		$this->client->add_cb("on__message", function($stanza){ //on__message gcm xmpp protocol is a funny one
			$data = json_decode(html_entity_decode($stanza->childrens[0] -> text), true);
			$messageType = $data['message_type'];
			$messageId = $data['message_id']; //message id which was sent by us
		 	$gcmKey = $data['from']; //gcm key;
			if($messageType == 'nack'){
				$errorDescription = $data['error_description']; //usually empty ...
		 		$error = $data['error']; 
		 		switch($error){
					case 'BAD_ACK':
						break;
					case 'CONNECTION_DRAINING':
						break;
					case 'BAD_REGISTRATION':
						break;
					case 'DEVICE_UNREGISTERED':
						break;
					case 'INTERNAL_SERVER_ERROR':
						break; 
					case 'INVALID_JSON':
						break; 
					case 'DEVICE_MESSAGE_RATE_EXCEEDED':
						break;
					case 'SERVICE_UNAVAILABLE':
						break;
					case 'QUOTA_EXCEEDED':
						break;
				}
		 		
		 		echo "On GCM Error ". $error . "\n"; 
			}else{
				echo 'On Gcm Message ' . $messageId . "\n";
			}
			
			$this->messagesReceived++;
			if($this->messagesSent == $this->messagesReceived){
				$this->client->send_end_stream(); 
			}
		});
		
		$this->client->add_cb('on_auth_failure', function($reason) {
			echo "auth failure ". $reason . "\n";
			//TODO check for apikeys and restart this bastard
		    $this->client->send_end_stream();    
		});
		
		$this->client->add_cb('on_error_message', function($stanza) {
			//TODO Maybe someday
			echo ("on error message\n");
		});
	}

	public function processGCMs(){
		$this->client->start();
		echo "\n\nxmpp socket ended\n";
	}
	
	public static function createJsonMessage($toRegId, $messageId, $payload, $collapseKey, $timeToLive, $delay_while_idle){	
		$message = [
			'to' => $toRegId,
			'collapse_key' => $collapseKey, // Could be unset
			'time_to_live' => $timeToLive, //Could be unset	
			'delay_while_idle' => true, //Could be unset
			'message_id' => (string) $messageId,
			'data' => $payload,	
		];
	
		return json_encode($message);
	}

	private function sendMessages(){
		for($i = 0; $i < 5; $i++){ //TODO fetch your gcms from db ...
			$messageId = rand(10000,88888888); //TODO Message id from notify_queue ?
			
			$registrationId = "USER_REGISTRATION_ID"; //TODO registration id from android_gcm_keys
		
			$payload = [ //TODO notifcation data
				'hello' => "world",
				"title" => "Notification title ". $messageId ,
				"text" => "message ssss",
			];
			
			$collapseKey = "collapseKey"; //TODO ?
			$timeToLive = 3600 * 24 * 7; // TODO ?
			$message = GCMSender::createJsonMessage($registrationId, $messageId, $payload, $collapseKey, $timeToLive, true);
			$message = '<message id=""><gcm xmlns="google:mobile:data">' . $message . '</gcm></message>';
		    $this->client->send_raw($message);
			echo "Message ". $messageId . " was sent \n";
			$this->messagesSent++;
		}
	}
}

$time = microtime(true);

$GCMSender = new GCMSender();
$GCMSender->processGCMs();

echo "Process ended in: " . (microtime(true) - $time) . "\n";