open-java-format-action/.github/workflows/follow-releases.yml at main · openjavaformat/open-java-format-action · GitHub

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name: Follow open-java-format releases

# .open-java-format-version holds the open-java-format version this repository is on, as it does in
# any repository that uses the action or the pre-commit hook; the README and the error messages name
# the version too. Once an hour this compares that file with the latest release of
# openjavaformat/open-java-format. When a new release is out, the version is replaced in every file
# that names it, the result is pushed to main, and Test Action is run on it. That run has to be
# explicit: a push made with the workflow's own token starts no push-triggered workflow.

on:
  schedule:
    - cron: '17 * * * *' # not on the hour, when GitHub's schedule queue is longest
  workflow_dispatch:

permissions: {}

jobs:
  bump:
    name: Bump to the latest release
    runs-on: ubuntu-latest
    permissions:
      contents: write # push to main
      actions: write # run Test Action
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - name: Bump when a new release is out
        shell: bash
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          current=$(cat .open-java-format-version)
          release=$(gh release view --repo openjavaformat/open-java-format --json tagName,publishedAt)
          latest=$(jq -r .tagName <<< "$release")
          published=$(jq -r '.publishedAt[:10]' <<< "$release")
          if [ "$latest" = "$current" ]; then
            echo "Already on $current."
            exit 0
          fi

          # Every file that names the current version names it as the current one. The dots are
          # escaped so that sed takes them literally.
          git grep -lF -- "$current" | xargs sed -i "s/${current//./\\.}/$latest/g"
          git diff

          git config user.name 'github-actions[bot]'
          git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
          git commit --all --quiet --file - <<COMMIT
          Check with open-java-format $latest

          .open-java-format-version names $latest, which
          openjavaformat/open-java-format released on $published, so the tests
          run the action and the pre-commit hook with it. Made by the
          "$GITHUB_WORKFLOW" workflow:
          $GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID
          COMMIT
          gh auth setup-git
          git push origin HEAD:main
          gh workflow run ci.yml --ref main