update_docs.yml

name: Update Docs

on:
  push:
  pull_request:
  workflow_dispatch:

env:
  PYTHON_VERSION: '3.8'
  GIT_USER_NAME: 'GitHub Actions Bot'
  GIT_USER_EMAIL: 'github-actions[bot]@users.noreply.github.com'

jobs:
  build-and-deploy:
    runs-on: ubuntu-20.04
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3  # Updated to v3
        with:
          fetch-depth: 0  # Fetch all history for better versioning

      - name: Setup Python
        uses: actions/setup-python@v4
        with:
          python-version: ${{ env.PYTHON_VERSION }}
          cache: 'pip'  # Enable pip caching

      - name: Install system dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y pandoc
        
      - name: Setup Python virtual environment
        run: |
          python -m venv venv
          source venv/bin/activate
          pip install --upgrade pip

      - name: Install Python dependencies
        run: |
          source venv/bin/activate
          pip install -r requirements.txt
          pip install sphinx-mathjax-offline

      - name: Install d2l-book
        run: |
          source venv/bin/activate
          git clone https://github.com/openmlsys/d2l-book.git
          cd d2l-book
          pip install .
          cd ..

      - name: Build documentation
        run: |
          source venv/bin/activate
          sh build_html.sh

      - name: Deploy to pages branch
        run: |
          # Create and switch to a new worktree for the openmlsys-book-en branch
          git worktree add --detach openmlsys-book-en
          cd openmlsys-book-en
          
          # Delete openmlsys-book-en branch if it exists and create a new orphan branch
          git fetch origin openmlsys-book-en || true
          git branch -D openmlsys-book-en || true
          git checkout --orphan openmlsys-book-en
          
          # Clean everything except .git directory
          find . -mindepth 1 -maxdepth 1 -not -name .git -exec rm -rf {} \;
          
          # Copy built documentation
          cp -r ../_build/* .
          
          # Configure git
          git config user.name "${GIT_USER_NAME}"
          git config user.email "${GIT_USER_EMAIL}"
          
          # Add and commit all changes
          git add .
          git commit -m "docs: update documentation
          
          Automated update by GitHub Actions
          Workflow: ${{ github.workflow }}
          Run ID: ${{ github.run_id }}
          Triggered by: ${{ github.event_name }}"
          
          # Force push to openmlsys-book-en branch
          git push -f origin openmlsys-book-en
          
          # Clean up the worktree
          cd ..
          git worktree remove openmlsys-book-en