name: Deploy TinyTorch Jupyter Book

# Trigger the workflow on push to main branch (publishing) or manual dispatch
on:
  push:
    branches: [ main ]
    paths:
      - 'book/**'
      - 'modules/source/**'
      - '.github/workflows/deploy-book.yml'
  pull_request:
    branches: [ main ]
    paths:
      - 'book/**'
      - 'modules/source/**'
  workflow_dispatch:

# Set permissions for GitHub Pages deployment and content modification
permissions:
  contents: write
  pages: write
  id-token: write

# Allow only one concurrent deployment
concurrency:
  group: "pages"
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        token: ${{ secrets.GITHUB_TOKEN }}

    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.11'
        cache: 'pip'

    - name: Install dependencies
      run: |
        pip install --upgrade pip
        pip install jupyter-book jupytext
        pip install -r book/requirements.txt
        
    - name: Generate notebooks for Binder/Colab
      run: |
        python book/convert_modules.py --all
        
    - name: Commit generated notebooks
      run: |
        git config --local user.email "action@github.com"
        git config --local user.name "GitHub Action"
        git add modules/source/**/*.ipynb
        if ! git diff --cached --quiet; then
          git commit -m "Auto-generate notebooks for Binder/Colab access [skip ci]"
          git push
        fi
        
    - name: Generate overview pages for book
      run: |
        python book/convert_modules.py --overview
        
    - name: Build the book
      run: |
        cd book
        jupyter-book build . --all
        
    - name: Upload book artifact
      uses: actions/upload-pages-artifact@v3
      with:
        path: book/_build/html

  deploy:
    # Only deploy on main branch pushes (not PRs)
    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build
    steps:
    - name: Deploy to GitHub Pages
      id: deployment
      uses: actions/deploy-pages@v4