import Service from '@ember/service';
import { aliasMethod } from '@ember/object';
import $ from 'jquery';

export default Service.extend({
    connect() {
        let me = this;
        if (me.get('connected')) {
            console.info('Websocket is connected, reconnect.');
            me.disconnect();
        }

        // connect
        if (!me.get('stompClient')) {
            me.set('stompClient', Stomp.over(new SockJS('/stomp')));
        }
        me.get('stompClient').connect({}, function() {
            console.info('Connect websocket.');
            me.stompClient.subscribe('/topic/websocket', function(msg) {
                console.info('On websocket message: ', msg);
                $.trigger('websocket', JSON.parse(msg.body));
            });
            me.set('connected', true);
            console.info('Websocket connected.');
        });
    },
    willDestroy() {
        var me = this;
        me._super(...arguments);

        if (me.get('connected') && me.get('stompClient')) {
            me.get('stompClient').disconnect();
            me.set('connected', false);
            console.info('Websocket disconnected.');
        }
        else {
            console.info('Websocket is not connected, ignore disconnect.');
        }
    },
    disconnect: aliasMethod('willDestroy')
});