name: pre-commit

on:
  push:
  pull_request:
    branches: [main]

jobs:
  pre-commit:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Required for detecting diffs

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.12'

      - name: Install pre-commit
        run: |
          pip install pre-commit

      - name: Run pre-commit on changed files
        run: |
          CHANGED_FILES=$(git diff --name-only origin/main...HEAD | tr '\n' ' ')
          if [ -n "$CHANGED_FILES" ]; then
            pre-commit run --files $CHANGED_FILES
          else
            echo "No changed files to check."
          fi