black-format.yml

name: Auto Black Formatter

on:
  pull_request:
    paths:
      - "**.py"

jobs:
  black-format:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"

      - name: Install Black
        run: pip install black

      - name: Run Black
        run: black . --check --diff || black .

      - name: Commit formatted code
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          BRANCH_NAME=black-formatting-pr-${{ github.event.pull_request.number }}
          git checkout -b "$BRANCH_NAME" || git checkout "$BRANCH_NAME"
          git add .
          git commit -m "Apply Black code formatting" || echo "No changes to commit"
          git push --set-upstream origin "$BRANCH_NAME"
          git checkout ${{ github.head_ref }}

      - name: Push and create PR
        uses: peter-evans/create-pull-request@v5
        with:
          commit-message: Apply Black code formatting
          branch: black-formatting-pr-${{ github.event.pull_request.number }}
          title: "Format code with Black"
          body: "This PR auto-formats the code using [Black](https://github.com/psf/black)."
          base: ${{ github.head_ref }}