// chromium plugin
(function() {
    Notification.requestPermission();
    WebSocket.prototype._send = WebSocket.prototype.send;
    WebSocket.prototype.send = function(data) {
        this._send(data);
        this.addEventListener('message', function(msg) {
            console.log('>> ' + msg.data);
            if (msg.data.includes("Presence")) {
                var d = eval(msg.data.split(',').slice(1).join());
                console.log('+++', d[1].id, d[1].type);
                if (d[1].type === 'available' && d[1].id.includes("505000000")) {
                    new Notification("online alert");
                }
            }
        }, false);
        this.send = function(data) {
            this._send(data);
            console.log("<<< " + data);
        };
        console.log("<< " + data);
    }
})();