datocms-client/lib/utils/subscribeToChannel.js

For new DatoCMS users, we recommend @datocms/cma-client-node

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = subscribeToChannel;

var _pusherJs = _interopRequireDefault(require("pusher-js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var PUSHER_API_KEY = '75e6ef0fe5d39f481626';
var channels = {};

function subscribeToChannel(client, siteId, environment) {
  var cacheKey = "".concat(siteId, "--").concat(environment || 'primary');
  var cachedPromise = channels[cacheKey];

  if (cachedPromise) {
    return cachedPromise;
  }

  var promise = (siteId ? Promise.resolve(siteId) : client.site.find().then(function (site) {
    return site.id;
  })).then(function (realSiteId) {
    return new Promise(function (resolve, reject) {
      var pusher = new _pusherJs["default"](PUSHER_API_KEY, {
        authEndpoint: "".concat(client.rawClient.baseUrl, "/pusher/authenticate"),
        auth: {
          headers: {
            Authorization: "Bearer ".concat(client.rawClient.token),
            Accept: 'application/json',
            'X-Api-Version': '3',
            'Content-Type': 'application/json'
          }
        }
      });
      var channelName = environment ? "private-site-".concat(realSiteId, "-environment-").concat(environment) : "private-site-".concat(realSiteId);
      var channel = pusher.subscribe(channelName);
      channel.bind('pusher:subscription_error', function () {
        reject(new Error('Could not subscribe to real-time events!'));
      });
      channel.bind('pusher:subscription_succeeded', function () {
        resolve([channel, function () {
          channels[cacheKey] = null;
          return pusher.disconnect();
        }]);
      });
    });
  });
  channels[cacheKey] = promise;
  return promise;
}