node-version-bump.yml

# Requires repo secret: PERSONAL_ACCESS_TOKEN with permissions:
#   Contents: read and write
#   Pull Requests: read and write

name: Node.js Version Bump

on:
  workflow_dispatch:
    inputs:
      increment:
        description: 'Increment type'
        required: true
        type: choice
        options:
          - patch
          - minor
          - major
      auto-merge:
        description: 'Auto-merge pull request?'
        required: true
        type: boolean
        default: true
run-name: '${{ github.workflow }}: incrementing ${{ inputs.increment }}'

jobs:
  bump:
    runs-on: ubuntu-latest
    steps:
      # Setup and install
      - uses: actions/checkout@v4
      - uses: volta-cli/action@v4
      - run: npm ci

      # Bump the version and commit to the default branch
      - id: bump-and-commit
        run: |
          npm run "bump:${{ inputs.increment }}"
          git add --all

          USER_EMAIL="${GITHUB_ACTOR_ID}+${GITHUB_ACTOR}@users.noreply.github.com"
          echo "USER_EMAIL=${USER_EMAIL}" >> "${GITHUB_OUTPUT}"
          git config --global user.email "${USER_EMAIL}"

          USER_NAME="$(gh api "/users/${GITHUB_ACTOR}" | jq .name -r)"
          echo "USER_NAME=${USER_NAME}" >> "${GITHUB_OUTPUT}"
          git config --global user.name "${USER_NAME}"

          PACKAGE_VERSION="$(jq --raw-output '.version' package.json)"
          echo "PACKAGE_VERSION=${PACKAGE_VERSION}" >> "${GITHUB_OUTPUT}"
          git commit -m "v${PACKAGE_VERSION}"
        env:
          GH_TOKEN: ${{ github.token }}

      # Create the pull request, and optionally mark it as auto-merge
      - id: create-pull-request
        uses: peter-evans/create-pull-request@v6
        with:
          # GitHub won't run workflows off of events from the `github-actions` user
          # But also, I want the PR to be created under my name for cosmetic reasons
          token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
          author: ${{ steps.bump-and-commit.outputs.USER_NAME }} <${{ steps.bump-and-commit.outputs.USER_EMAIL }}>
          branch: ${{ github.actor }}/${{ steps.bump-and-commit.outputs.PACKAGE_VERSION }}
          delete-branch: true
          title: v${{ steps.bump-and-commit.outputs.PACKAGE_VERSION }}
          assignees: ${{ !inputs.auto-merge && github.repository_owner || '' }}
          reviewers: ${{ (!inputs.auto-merge && github.repository_owner != github.actor) && github.repository_owner || '' }}
      - if: ${{ steps.create-pull-request.outputs.pull-request-number }}
        run: |
          {
            echo "# v${{ steps.bump-and-commit.outputs.PACKAGE_VERSION }}"
            echo ""
            echo "${{ steps.create-pull-request.outputs.pull-request-url }}"
          } >> "${GITHUB_STEP_SUMMARY}"
      - if: ${{ steps.create-pull-request.outputs.pull-request-number && inputs.auto-merge }}
        run: gh pr merge "${{ steps.create-pull-request.outputs.pull-request-number }}" --squash --auto
        env:
          GH_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}