deploy.yml

name: Deploy to GitHub Pages

on:
  push:
    branches:
      - main

jobs:
  deploy:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Install dependencies
        run: pip install "jupyter-book<2" ghp-import

      - name: Build site
        run: |
          rm -rf _build/
          jupyter-book build . 2>&1
          if [ ! -d "_build/html" ]; then
            echo "ERROR: _build/html directory not found — build likely failed"
            exit 1
          fi

      - name: Copy CNAME
        run: cp CNAME _build/html/

      - name: Deploy to GitHub Pages
        run: ghp-import -n -p -f _build/html
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}