name: Build Website

on:
  push:
    branches:
      - main
    paths:
      - 'README.md'
      - 'index.html'
  pull_request:
    branches:
      - main
    paths:
      - 'README.md'
      - 'index.html'

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.x'

      - name: Install dependencies
        run: pip install pandas

      - name: Build website
        run: python .github/workflows/website.py

      - name: Check if index.html is up to date
        run: |
          if git diff --quiet index.html; then
            echo "✅ index.html is up to date with README.md"
          else
            echo "❌ index.html is out of sync with README.md!"
            echo ""
            echo "Please run locally:"
            echo "  python .github/workflows/website.py"
            echo ""
            echo "Then commit the updated index.html"
            echo ""
            echo "Diff:"
            git diff index.html | head -50
            exit 1
          fi