name: Check for Empty Cells

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

jobs:
  check-empty-cells:
    name: Check for empty cells in marimo notebooks
    runs-on: ubuntu-latest
    steps:
      - name: 🛑 Cancel Previous Runs
        uses: styfle/cancel-workflow-action@0.12.1

      - name: 🔄 Checkout code
        uses: actions/checkout@v4

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

      - name: 🔍 Check for empty cells
        run: |
          python scripts/check_empty_cells.py

      - name: 📊 Report results
        if: failure()
        run: |
          echo "❌ Empty cells found in marimo notebooks!"
          echo "Please remove or add content to empty cells before merging."
          echo "Empty cells look like:"
          echo "@app.cell"
          echo "def _():"
          echo "    return"