Wercker NotifyDeployment to Trello Card

werckerNotifyDeploymentViaTrello.js

// --------------------------------------------------------
//
// Notify a Trello card on a new deployment
//
// NOTE: This is a Wercker related CI script
// NOTE: This depends on the Wercker CI environment!
//
// Required ENV:
//   TRELLO_API_KEY, TRELLO_API_TOKEN, TRELLO_CARD_ID
// Wercker ENV (supplied by Wercker):
//   WERCKER_GIT_DOMAIN, WERCKER_GIT_OWNER, WERCKER_GIT_REPOSITORY,
//   WERCKER_GIT_BRANCH, WERCKER_GIT_COMMIT,
//   WERCKER_RUN_URL
//
// Test execution example:
// TRELLO_API_KEY=X TRELLO_API_TOKEN=Y TRELLO_CARD_ID=X \
// WERCKER_GIT_DOMAIN=github.org WERCKER_GIT_OWNER=example WERCKER_GIT_REPOSITORY=repo \
// WERCKER_GIT_BRANCH=example WERCKER_GIT_COMMIT=123 node bin/notifyDeployment.js
// --------------------------------------------------------

// --------------------------------------------------------
// CONFIGURATION
// --------------------------------------------------------

// nothing to configure
// TODO support hardcoded config vs env config; i.e. allow running via local cli

// --------------------------------------------------------
// DO NOT CHANGE BELOW HERE ;-)
// --------------------------------------------------------
const Promise = require('bluebird'); // todo remove this dependency
const arrayIntersect = require('lodash/intersection');
const arrayDiff = require('lodash/difference');
const Trello = require('node-trello'); // todo remove this dependency

/**
 * Exit if the given envVars are not in the current environment
 *
 * @param envVars
 */
const guardEnvVarsExist = (envVars) => {
  const hasEnvKeys = arrayIntersect(Object.keys(process.env), envVars);
  if (hasEnvKeys.length !== envVars.length) {
    console.log(`ERROR: Missing environment variables: ${arrayDiff(envVars, hasEnvKeys).join(', ')}`);
    process.exit(-1);
  }
};

// Check required vars exist
guardEnvVarsExist([
  'TRELLO_API_KEY', 'TRELLO_API_TOKEN', 'TRELLO_CARD_ID',
  'WERCKER_GIT_DOMAIN', 'WERCKER_GIT_OWNER', 'WERCKER_GIT_REPOSITORY',
  'WERCKER_GIT_BRANCH', 'WERCKER_GIT_COMMIT',
  'WERCKER_RUN_URL'
]);

// extract required vars
const {
  TRELLO_API_KEY, TRELLO_API_TOKEN, TRELLO_CARD_ID,
  WERCKER_GIT_DOMAIN, WERCKER_GIT_OWNER, WERCKER_GIT_REPOSITORY,
  WERCKER_GIT_BRANCH, WERCKER_GIT_COMMIT,
  WERCKER_RUN_URL
} = process.env;

// todo integrate above commands; reduce duplicity

//
// currently only supports GitHub(like, default) and BitBucket...

// https by default
const repoUrl = `https://${WERCKER_GIT_DOMAIN}/${WERCKER_GIT_OWNER}/${WERCKER_GIT_REPOSITORY}`;

// todo proper templating

// GitHub templates
// COMMIT URI: ${repoUrl}/commit/${WERCKER_GIT_COMMIT}
// BRANCH URI: ${repoUrl}/tree/${WERCKER_GIT_BRANCH}

// BitBucket templates
// COMMIT URI: ${repoUrl}/commits/${WERCKER_GIT_COMMIT}
// BRANCH URI: ${repoUrl}/branch/${WERCKER_GIT_BRANCH}

let repoBranchPart = 'tree';
let repoCommitPart = 'commit';
if (WERCKER_GIT_DOMAIN === 'bitbucket.org') {
  repoBranchPart = 'branch';
  repoCommitPart = 'commits';
}

const repoBranchUrl = (branch) => {
  return `${repoUrl}/${repoBranchPart}/${branch}`;
};

const repoCommitUrl = (commit) => {
  return `${repoUrl}/${repoCommitPart}/${commit}`;
};

// NOW do something...
const trello = Promise.promisifyAll(new Trello(TRELLO_API_KEY, TRELLO_API_TOKEN));

return trello.postAsync(`/1/cards/${TRELLO_CARD_ID}/actions/comments`, {
  text: 'Deployed new version (' +
    `[\`${WERCKER_GIT_BRANCH}\`](${repoBranchUrl(WERCKER_GIT_BRANCH)})@` +
    `[\`${WERCKER_GIT_COMMIT}\`](${repoCommitUrl(WERCKER_GIT_COMMIT.substring(0, 8))})` +
  ')' + ` [CI](${WERCKER_RUN_URL})`
}).then(card => {
  // put the card to the top of the list...
  return trello.putAsync(`/1/cards/${card.data.card.id}`, { pos: 'top' });
}).catch((err) => {
  console.log(err); // we don't fail a deployment if we cant log to trello!
});