update-readme.yml

name: Auto-update README

on:
  push:
    branches: [main]
    paths:
      - 'solutions/*.py'

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Install uv
        uses: astral-sh/setup-uv@v7
        with:
          enable-cache: true

      - name: Set up Python 3.10
        run: uv python install 3.10

      - name: Install dependencies
        run: uv sync --all-extras --dev

      - name: Run Ruff linter
        run: uv run ruff check .

  test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Install uv
        uses: astral-sh/setup-uv@v7
        with:
          enable-cache: true

      - name: Set up Python 3.10
        run: uv python install 3.10

      - name: Install dependencies
        run: uv sync --all-extras --dev

      - name: Run tests
        run: uv run pytest

  update-readme:
    needs: [lint, test]
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          token: ${{ secrets.GH_PAT }}
          persist-credentials: true

      - name: Install uv
        uses: astral-sh/setup-uv@v7
        with:
          enable-cache: true

      - name: Set up Python 3.10
        run: uv python install 3.10

      - name: Install dependencies
        run: uv sync --all-extras

      - name: Generate README
        run: uv run scripts/update_readme.py

      - name: Commit and push if changed
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          git add README.md
          if ! git diff --cached --quiet; then
            git commit -m "chore: auto-update README with latest solutions"
            git push
          else
            echo "No changes to README."
          fi