NodeJS script used to check GitHub for open pull requests - for several / multiple repositories - and send a message to Slack. We have this running every 30 minutes so the bot nags us about pull requests we are not attending to.

checkOpenPullRequests.js

"use strict";
var request = require('superagent');
var Q = require('q');

var config = {
  github : {
    // https://help.github.com/articles/creating-an-access-token-for-command-line-use/
    user : GITHUB_USERNAME,
    password : GITHUB_TOKEN
  },
  slack : {
    // https://api.slack.com/incoming-webhooks
    webhookUrl : SLACK_INCOMING_HOOK_URL
  },
  reposToCheck : [
    { "owner" : OWNER_NAME1, "repo" : REPO_NAME1 },
    { "owner" : OWNER_NAME2, "repo" : REPO_NAME2 }
  ]
};

console.log('Checking for pending pull requests...');

var promises = config.reposToCheck.map(function(repoToCheck) {
  var deferred = Q.defer();
  var url = "https://api.github.com/repos/" +
    repoToCheck.owner + "/" +
    repoToCheck.repo + "/pulls";

  request
    .get(url)
    .auth(config.github.user, config.github.password)
    .end(function(err, res){
      if (err) return deferred.reject(err);
      var prs = res.body.map(function(pr) {
        return {
          link : pr.html_url,
          title : pr.title,
          user : pr.user.login,
          repo : repoToCheck.repo
        };
      });
      deferred.resolve(prs);
    });

  return deferred.promise;
});

Q.all(promises).then(function(results) {
  var allPrs = [];
  results.forEach(function(repoResult) { allPrs = allPrs.concat(repoResult) });

  if (allPrs.length > 0) {
    var text = "These pull requests are still pending : \n";
    allPrs.forEach(function(pr){
      text+= "<" + pr.link + "|" + pr.title + "> by " + pr.user + " in " + pr.repo + "\n";
    });
    var slackPostData = {
      "username" : "pending-pull-requests-bot",
      "text" : text
    };
    request
      .post(config.slack.webhookUrl)
      .send(slackPostData)
      .end();
  }
})
.fail(console.log)
.done();