bigbluebutton-Github/bigbluebutton-html5/imports/api/polls/server/methods/publishVote.js

import { publish } from '/imports/api/common/server/helpers';
import { isAllowedTo } from '/imports/startup/server/userPermissions';
import { appendMessageHeader } from '/imports/api/common/server/helpers';
import Polls from '/imports/api/polls';
import { logger } from '/imports/startup/server/logger';

export default function publishVote(credentials, pollId, pollAnswerId) { //TODO discuss location
  const REDIS_CONFIG = Meteor.settings.redis;
  if (isAllowedTo('subscribePoll', credentials)) {
    const { meetingId, requesterUserId, requesterToken } = credentials;
    const eventName = 'vote_poll_user_request_message';

    const result = Polls.findOne({
      users: requesterUserId,
      meetingId: meetingId,
      'poll.answers.id': pollAnswerId,
      'poll.id': pollId,
    });

    if ((meetingId != null) &&
      (result.meetingId != null) &&
      (requesterUserId != null) &&
      (pollAnswerId != null)) {
      let message = {
        payload: {
          meeting_id: result.meetingId,
          user_id: requesterUserId,
          poll_id: result.poll.id,
          question_id: 0,
          answer_id: pollAnswerId,
        },
      };

      const selector = {
        users: requesterUserId,
        meetingId: meetingId,
        'poll.answers.id': pollAnswerId,
      };

      const modifier = {
        $pull: {
          users: requesterUserId,
        },
      };

      Polls.update(selector, modifier);
      message = appendMessageHeader(eventName, message);
      logger.info('publishing Poll response to redis');
      return publish(REDIS_CONFIG.channels.toBBBApps.polling, message);
    }
  }
}