AdWords to Slack

function SlackAPI(config) {
  this.webhookUrl = config.webhookUrl;

  // Send a message to slack. The config can 
  // be as simple as a string or an object
  // for passing more complex messages.
  this.sendMessage = function(config) {
    if(typeof config == 'object') {
      postToSlack(this.webhookUrl, config);
    } else {
      postToSlack(this.webhookUrl, { text : config });
    }
  };
  
  // Take care of all the messy stuff like
  // retries and status codes.
  function postToSlack(url, payload) {
    var options = {
      method: 'POST',
      payload: JSON.stringify(payload),
      muteHttpExceptions: true
    };
    var retries = 2;
    while(retries > 0) {
      try {
        var resp = UrlFetchApp.fetch(url,options);
        if(resp.getResponseCode() == 200) {
          return true;
        } else {
          Logger.log(
            Utilities.formatString(
              "WARNING: Slack returned status code of %s and a message of: %s",
              resp.getResponseCode(),
              resp.getContentText()
            )
          );
          Logger.log('Waiting 1 seconds then retrying...');
          Utilities.sleep(1000);
          retries--;
        }
      } catch(e) {
        Logger.log("ERROR: Something failed in UrlFetchApp. Retrying in 1 second...");
        Utilities.sleep(1000);
        retries--;
      }
    }
    throw "Either UrlFetchApp is broken or the Slack Webhook is not configured properly.";
  }
};


function main() {
  var slack = new SlackAPI({
    webhookUrl : "USE_YOUR_OWN_URL" 
  });


  var currentAccount = AdWordsApp.currentAccount();
  
  var stats = currentAccount.getStatsFor('YESTERDAY');

  var text = 'Clicks: *' + stats.getClicks() + '*' + 
    '\nImpressions: *' + stats.getImpressions() + '*' + 
    '\nAverage CPC: *$' + stats.getAverageCpc() + '*' + 
    '\nAverage Position: *' + stats.getAveragePosition() + '*';

  slack.sendMessage({
    channel: "#fam", 
    icon_emoji: ":adwords:",
    username: "AdWords Bot", 
    attachments: [
            {
                "pretext": "Here are some stats for yesterday:",
                "text": text,
                "color": "#7CD197",
                "mrkdwn_in": ["pretext", "text", "fields"], // enable Markdown on all fields
            }
        ]
  });
}