/**
 *
 * User: Martin Donnelly
 * Date: 2016-09-07
 * Time: 15:33
 *
 */

// from
// https://medium.com/unprogrammer/implementing-publisher-subscriber-pattern-using-javascript-nodejs-and-websockets-82036da7e174

const url = require('url');

const PubSubManager = require('./pubsub');
const logger = require('log4js').getLogger('wshandlerv3');
logger.level = 'debug';

const pubSubManager = new PubSubManager();

module.exports = function(events, wsServer) {
  'use strict';

  logger.debug('>> new WS', wsServer);
  wsServer.on('connection', (ws, req) => {
    console.log(`Connection request from: ${req.connection.remoteAddress}`);
    ws.on('message', (data) => {
      console.log(`data: ${ data}`);
      const json = JSON.parse(data);
      const request = json.request;
      const message = json.message;
      const channel = json.channel;

      switch (request) {

        case 'PUBLISH':
          pubSubManager.publish(ws, channel, message);
          break;
        case 'SUBSCRIBE':
          pubSubManager.subscribe(ws, channel);
          break;
      
      }
    });
    ws.on('close', () => {
      console.log('Stopping client connection.');
    });
  });

  const sendTweetHandler = (id, obj) => {
    logger.debug('sendTweetHandler', id, obj);

    pubSubManager.publishTwitter(id, obj);

    /*
    try {
      ws.send(JSON.stringify(obj));
    }
    catch (err) {
      logger.error(err);
      logger.warn('Offending object: ', obj);
    }
*/
  };

  events.on('sendTweet', sendTweetHandler);

  return module;
};