versionist.conf.js

'use strict';

const _ = require('lodash')
const fs = require('fs')
const path = require('path')
const semver = require('semver')
const shell = require('shelljs')

const getAuthor = (commitHash) => {
  const authorCmd = shell.exec(`git show --quiet --format="%an" ${commitHash}`)
  if (authorCmd.code !== 0) {
    throw new Error(authorCmd.stderr)
  }
  return authorCmd.stdout.replace('\n', '')
}

const compareExtendedSemver = (a, b) => {
  const semverCompare = semver.compare(a, b)
  if (semverCompare !== 0) {
    return semverCompare
  }
  return a.localeCompare(b)
}

const getMetaResinFromSubmodule = (documentedVersions, history, callback) => {
  shell.exec('git submodule status layers/meta-resin', (code, stdout, stderr) => {
    if (code != 0) {
      return callback(new Error('Could not find meta-resin submodule'))
    }
    const match = /.{40} .* \(v(.+)\)/.exec(stdout)

    if (!match) {
      return callback(new Error(`Could not determine meta-resin version from version ${stdout}`))
    }

    const metaVersion = `${match[1]}+rev0`
    const latestDocumented = _.trim(_.last(documentedVersions.sort(compareExtendedSemver)))

    // semver.gt will ignore the revision numbers but still compare the version
    // If metaVersion <= latestDocumented then the latestDocumented version is a revision of the current metaVersion
    const latestVersion = semver.gt(metaVersion, latestDocumented) ? metaVersion : latestDocumented

    return callback(null, latestVersion)
  })
}

const updateVersionFile = (cwd, version, callback) => {
  const versionFile = path.join(cwd, 'VERSION')

  fs.writeFile(versionFile, version, callback)
}

module.exports = {
  addEntryToChangelog: {
    preset: 'prepend',
    fromLine: 3
  },
  getChangelogDocumentedVersions: {
    preset: 'changelog-headers',
    clean: /^v/
  },
  getGitReferenceFromVersion: 'v-prefix',
  includeCommitWhen: (commit) => {
    return commit.footer['changelog-entry']
  },
  getIncrementLevelFromCommit: (commit) => {
    return 'patch'
  },
  incrementVersion: (currentVersion, incrementLevel) => {
    const revision = Number(currentVersion[currentVersion.length - 1])
    if (!_.isFinite(revision)) {
      throw new Error(`Could not extract revision number from ${currentVersion}`)
    }
    return currentVersion.slice(0, currentVersion.length - 1) + (revision + 1)
  },
  getCurrentBaseVersion: getMetaResinFromSubmodule,
  updateVersion: updateVersionFile,
  // If a 'changelog-entry' tag is found, use this as the subject rather than the
  // first line of the commit.
  transformTemplateData: (data) => {
    data.commits.forEach((commit) => {
      commit.subject = commit.footer['changelog-entry'] || commit.subject
      commit.author = getAuthor(commit.hash)
    });
    if (_.isEmpty(data.commits)) {
      throw new Error('At least one commit must be annotated with a Changelog-entry tag')
    }
    return data;
  },
  template: [
    '# v{{version}}',
    '## ({{moment date "Y-MM-DD"}})',
    '',
    '{{#each commits}}',
    '{{#if this.author}}',
    '* {{capitalize this.subject}} [{{this.author}}]',
    '{{else}}',
    '* {{capitalize this.subject}}',
    '{{/if}}',
    '{{/each}}'
  ].join('\n')
}