name: Check formatting

on:
  pull_request:

permissions:
  contents: write
  pull-requests: write
  checks: write

jobs:
  black:
    name: Python Black
    runs-on: ubuntu-latest
    if: github.event.pull_request.head.repo.full_name == github.repository

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}

      - uses: actions/setup-python@v5
        with:
          python-version: "3.10"

      - name: Install black
        run: pip install black

      - name: Configure git
        run: |
          git config --global user.name github-actions[bot]
          git config --global user.email 41898282+github-actions[bot]@users.noreply.github.com

      - name: Run black
        run: python -m black .

      - name: Check if files have been modified
        id: mod_check
        run: |
          [[ $(git status -s | wc -l) -le 1 ]] \
          && echo "is-dirty=false" >> "$GITHUB_OUTPUT" \
          || echo "is-dirty=true" >> "$GITHUB_OUTPUT"

      - name: Commit and push changes
        if: steps.mod_check.outputs.is-dirty == 'true'
        run: |
          git add .
          git commit -m "Apply black formatting"
          git push

  fork-black:
    name: Python Black
    runs-on: ubuntu-latest
    if: github.event.pull_request.head.repo.full_name != github.repository

    steps:
      - uses: actions/checkout@v4
      - uses: psf/black@stable