name: Update README

on:
  push:
    branches: [main]
    paths-ignore:
      - 'README.md'

jobs:
  generate-readme:
    runs-on: ubuntu-latest
    permissions:
      contents: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

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

      - name: Generate README
        run: python scripts/generate_readme.py

      - name: Check for changes
        id: diff
        run: |
          git diff --quiet README.md && echo "changed=false" >> "$GITHUB_OUTPUT" || echo "changed=true" >> "$GITHUB_OUTPUT"

      - name: Commit and push
        if: steps.diff.outputs.changed == 'true'
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add README.md
          git commit -m "docs: auto-update README [skip ci]"
          git push