release.yml

name: "Release"
on:
  push:
    branches:
      - main
    tags:
      - '!*'

jobs:
  next-version:
    name: Get next release version
    runs-on: ubuntu-latest
    outputs:
      need-release: ${{ steps.need-release.outputs.result }}
    steps:
      - name: checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: setup node.js
        uses: actions/setup-node@v3
        with:
          node-version: 18
          cache: 'npm'

      - name: install dependencies
        run: npm ci

      - name: find current latest release version
        uses: pozetroninc/github-action-get-latest-release@master
        id: last-release
        with:
          repository: ${{ github.repository }}
          token: ${{ secrets.CUSTOM_GITHUB_PERSONAL_TOKEN }}

      - name: find next release version
        id: next-release
        run: npm_config_yes=true npx semantic-release --dry-run
        env:
          GITHUB_TOKEN: ${{ secrets.CUSTOM_GITHUB_PERSONAL_TOKEN }}

      - name: print discovered versions
        run: |
          echo "Last release version = ${{ steps.last-release.outputs.release }}"
          echo "Next release version = ${{ steps.next-release.outputs.new-release-version }}"
      
      - name: check if we need a new release
        uses: actions/github-script@v6
        id: need-release
        env:
          LAST_RELEASE: ${{ steps.last-release.outputs.release }}
          NEW_RELEASE: ${{ steps.next-release.outputs.new-release-version }}
        with:
          script: |
            const semver = require('semver');

            const lastRelease = process.env.LAST_RELEASE.replace(/^v/, '');
            const newRelease = process.env.NEW_RELEASE.replace(/^v/, '');
            return semver.gt(newRelease, lastRelease);
          result-encoding: string

      - name: print if we need a new release
        run: |
          echo "Need a new release = ${{ steps.need-release.outputs.result }}"

  release:
    name: Cut a release on GitHub
    runs-on: ubuntu-latest
    needs: next-version
    if: needs.next-version.outputs.need-release == 'true'
    steps:
      - name: checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: setup node.js
        uses: actions/setup-node@v3
        with:
          node-version: 18
          cache: 'npm'

      - name: install dependencies
        run: npm ci

      - name: make a release on GitHub
        run: npm_config_yes=true npx semantic-release
        env:
          GITHUB_TOKEN: ${{ secrets.CUSTOM_GITHUB_PERSONAL_TOKEN }}
          GIT_AUTHOR_NAME: 'GP'
          GIT_COMMITTER_NAME: 'GP'
          GIT_AUTHOR_EMAIL: 'me@httgp.com'
          GIT_COMMITTER_EMAIL: 'me@httgp.com'