var Code = require('../../../../../shared/code');
var dispatcher = require('../../../util/dispatcher');

module.exports = function(app) {
  return new Handler(app);
}

var Handler = function(app) {
  this.app = app;
}

var handler = Handler.prototype;

handler.queryEntry = function(msg, session, next) {
  var uid = msg.uid;
  if (!uid) {
    next(null, {code: Code.FAIL});
    return;
  }

  var connectors = this.app.getServersByType('connector');
  if (!connectors || connectors.length === 0) {
    next(null, {code: Code.GATE.FA_NO_SERVER_AVAILABLE});
    return;
  }

  var res = dispatcher.dispatch(uid, connectors);

  let host = res.proxyHost || res.clientHost || res.host;
  next(null, {code: Code.OK, host: host, port: res.clientPort});
}