release.yml

name: Create new release

on:
  pull_request:
    branches:
      - main
    types: [closed]
  workflow_dispatch:
    inputs:
      semver:
        description: "Semver version"
        required: true
        default: "minor"

jobs:
  create:
    name: Create PR for new release
    if: github.event.inputs.semver
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node.js environment
        uses: actions/setup-node@v4
        with:
          node-version: "20.x"
          registry-url: "https://registry.npmjs.org"

      - name: setup git config
        run: |
          # setup the username and email. I tend to use 'GitHub Actions Bot' with no email by default
          git config user.name "GitHub Actions Bot"
          git config user.email "<github@ctinnovation.it>"

      - name: update version and changelog
        run: |
          npm ci
          npm version ${{ github.event.inputs.semver }} --no-git-tag-version

      - name: Get new version from package.json
        run: |
          pkg_version=$(cat package.json | grep version | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')
          echo "PACKAGE_VERSION=$pkg_version" >> $GITHUB_ENV
          echo $PACKAGE_VERSION

      - name: Create pull request
        id: pr-create
        uses: actions/github-script@v6
        with:
          github-token: ${{ github.token }}
          script: |
            const res = await github.rest.pulls.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: "refs/tags/tagname",
              head: "release_${{ env.PACKAGE_VERSION }}",
              base: "main",
              title: "Release: [v${{ env.PACKAGE_VERSION }}]",
              body: `PR created by Github Actions bot in order to release new version **v${{ env.PACKAGE_VERSION }}**.`
            })
            return res.data.number;

      - name: Request and assign review
        uses: actions/github-script@v6
        with:
          github-token: ${{ github.token }}
          script: |
            await github.rest.pulls.requestReviewers({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: ${{ steps.pr-create.outputs.result }},
              reviewers: ['${{ github.actor }}']
            });
            await github.rest.issues.addAssignees({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: ${{ steps.pr-create.outputs.result }},
              assignees: ['${{ github.actor }}']
            });

  publish:
    name: Tagging and publish new release
    runs-on: ubuntu-latest
    if: (github.event.pull_request.merged == true) && (startsWith(github.event.pull_request.title, 'Release:'))
    steps:
      - run: |
          echo ${{ github.event.pull_request.title}}
          echo "TAG=$(echo '${{ github.event.pull_request.title}}' | awk -F '[][]' '{print $2}')" >> $GITHUB_ENV

      - name: Checkout
        if: "${{ env.TAG }}"
        uses: actions/checkout@v4

      - name: Tagging
        if: "${{ env.TAG }}"
        run: |
          git tag ${{ env.TAG }}
          git push origin --tags

      - name: Create and publish release on tag
        if: "${{ env.TAG }}"
        uses: actions/github-script@v6
        with:
          github-token: ${{ github.token }}
          script: |
            github.rest.repos.createRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              tag_name: "${{ env.TAG }}",
              target_commitish: "${{ github.sha}}",
              name: "${{ env.TAG }}"
            })

      - name: NPM package publish (npmjs registry)
        if: "${{ env.TAG }}"
        run: |
          npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}