index.js

var fs = require('fs')

var releaseMessage = require('./lib/release-message.js')
var GithubClient = require('./lib/github-client.js')
var path = require('path')

const createReleasePR = (config)  => {
  var client = new GithubClient(config)

  return client.prepareReleasePR().then((releasePR) => {
    // this is just attach label to PR, which should not disturp main process.
    client.addReleasePRLabel(releasePR.number)

    return client.collectReleasePRs(releasePR).then((prs) => {
      if (typeof config.mapFunction === 'function') {
        prs = prs.map(config.mapFunction)
      }
      var templatePath = config.template || path.join(__dirname, 'release.mustache')
      var template = fs.readFileSync(templatePath, 'utf8')
      var message = releaseMessage(template, prs)

      client.assignReviewers(releasePR, prs)
      client.updatePR(releasePR, message)
      return { prs, releasePR }
    })
  })
}

const getPRsInMergedReleasePR = (config) => {
  var client = new GithubClient(config)

  return client.getLatestMergedReleasePR().then((releasePR) => {
    if (releasePR) {
      return client.collectReleasePRs(releasePR).then((prs) => {
        const targets = prs.filter(function (pr) {
          return pr.number !== releasePR.number
        })
      return { prs: targets, releasePR }
      })
    } else {
      return null
    }

  })
}

module.exports = {
  createReleasePR,
  getPRsInMergedReleasePR
}