@pryv/monitor/src/lib/updateEvents.js

Extends `pryv` with event-driven notifications for changes on a Pryv.io account

/**
 * @license
 * [BSD-3-Clause](https://github.com/pryv/lib-js/blob/master/LICENSE)
 */
const Changes = require('./Changes');

module.exports = async function _updateEvents (monitor) {
  function forEachEvent (event) {
    // update eventsGetScope with "latest modified" information found
    if (event.modified > monitor.eventsGetScope.modifiedSince) {
      monitor.eventsGetScope.modifiedSince = event.modified;
    }
    if (event.deleted) {
      // event.delete is actually the date it was deleted.
      // use it as "modified" information
      if (event.deleted > monitor.eventsGetScope.modifiedSince) {
        monitor.eventsGetScope.modifiedSince = event.deleted;
      }
      monitor.emit(Changes.EVENT_DELETE, event);
    } else {
      monitor.emit(Changes.EVENT, event);
    }
  }
  try {
    await monitor.connection.getEventsStreamed(monitor.eventsGetScope, forEachEvent);
  } catch (e) {
    monitor.emit(Changes.ERROR, e);
  }
};