Build and Deploy Site workflow (apache/burr)

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name: Build and Deploy Site
 
on:
  push:
    branches: [main]
    paths:
      - 'docs/**'
      - 'website/**'
      - '.github/workflows/build-site.yml'
  workflow_dispatch:
 
concurrency:
  group: "site-deploy"
  cancel-in-progress: true
 
jobs:
  build-and-deploy:
    timeout-minutes: 30
    runs-on: latchkey-small
 
    steps:
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0
 
    # ── Build Next.js landing page ──
    - name: Set up Node.js
      uses: actions/setup-node@v4
      with:
        node-version: 20
        cache: npm
        cache-dependency-path: website/package-lock.json
 
    - name: Install Node dependencies
      working-directory: ./website
      run: npm ci
 
    - name: Build landing page
      working-directory: ./website
      run: npm run build
 
    # ── Build Sphinx docs ──
    - name: Set up Python 3.12
      uses: actions/setup-python@v5
      with:
        python-version: '3.12'
        cache: 'pip'
 
    - name: Install system dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y graphviz
 
    - name: Install Sphinx and dependencies
      run: |
        python -m pip install --upgrade --no-cache-dir pip setuptools
        python -m pip install --upgrade --no-cache-dir sphinx sphinx-rtd-theme sphinx-simplepdf
        pip install -e ".[documentation]"
 
    - name: Build Sphinx documentation
      working-directory: ./docs
      run: |
        python -m sphinx -T -W --keep-going -b dirhtml -d _build/doctrees -D language=en . _build/html
 
    # ── Merge outputs and deploy ──
    - name: Assemble site
      run: |
        mkdir -p /tmp/site-output
 
        # Landing page at root
        cp -r website/out/* /tmp/site-output/
 
        # Sphinx docs at /docs/
        mkdir -p /tmp/site-output/docs
        cp -r docs/_build/html/* /tmp/site-output/docs/
 
        # Redirects for old Sphinx paths
        cp .htaccess /tmp/site-output/
 
        echo "Site structure:"
        ls -la /tmp/site-output/
        echo "Docs:"
        ls -la /tmp/site-output/docs/ | head -20
 
    # TODO: Remove this step once we confirm ASF infra honors .htaccess (AllowOverride).
    # This was added as a fallback for PR #679 (landing page migration) because:
    # The .htaccess was not being deployed (dotglob fix above solves this) and
    # ASF infra may not honor .htaccess for the publish serving mode in .asf.yaml.
    # Once confirmed, the .htaccess 301s are sufficient and these static HTML
    # redirects can be removed to avoid bloating the asf-site branch.
    - name: Generate HTML redirect fallbacks
      run: |
        # Scan Sphinx build output and generate static HTML redirects for every page.
        # These act as fallback if the server does not process .htaccess.
        BASE_URL="https://burr.apache.org"
        OUTPUT="/tmp/site-output"
        DOCS_BUILD="docs/_build/html"
        COUNT=0
 
        # Find every index.html in the Sphinx output (dirhtml builder creates dir/index.html per page)
        while IFS= read -r file; do
          # Get path relative to build root, e.g. "getting_started/install/index.html"
          rel="${file#$DOCS_BUILD/}"
          dir="$(dirname "$rel")"
 
          # Skip the docs root (landing page lives there) and paths already in site output
          if [ "$dir" = "." ] || [ -e "$OUTPUT/$dir/index.html" ]; then
            continue
          fi
 
          target="$BASE_URL/docs/$dir/"
          mkdir -p "$OUTPUT/$dir"
          printf '<!DOCTYPE html><html><head>\n<meta charset="utf-8">\n<meta http-equiv="refresh" content="0; url=%s">\n<link rel="canonical" href="%s">\n<script>window.location.replace("%s")</script>\n</head><body>Redirecting to <a href="%s">%s</a>...</body></html>\n' \
            "$target" "$target" "$target" "$target" "$target" \
            > "$OUTPUT/$dir/index.html"
          COUNT=$((COUNT + 1))
        done < <(find "$DOCS_BUILD" -name "index.html" -type f)
 
        echo "Generated $COUNT HTML redirect fallbacks."
 
    - name: Deploy to asf-site / asf-staging
      if: github.event_name != 'pull_request'
      run: |
        if [ "${{ github.ref }}" = "refs/heads/main" ]; then
          TARGET_BRANCH="asf-site"
        else
          TARGET_BRANCH="asf-staging"
        fi
 
        git config --global user.name "GitHub Actions"
        git config --global user.email "actions@github.com"
 
        mkdir -p /tmp/gh-pages
 
        if ! git clone --branch $TARGET_BRANCH --single-branch \
            https://github.com/${{ github.repository }}.git /tmp/gh-pages 2>/dev/null; then
          rm -rf /tmp/gh-pages
          mkdir -p /tmp/gh-pages
          cd /tmp/gh-pages
          git init
          git checkout -b $TARGET_BRANCH
          git remote add origin https://github.com/${{ github.repository }}.git
          cd -
        fi
 
        rm -rf /tmp/gh-pages/content
        mkdir -p /tmp/gh-pages/content
        shopt -s dotglob
        cp -r /tmp/site-output/* /tmp/gh-pages/content/
 
        cd /tmp/gh-pages
 
        if [ ! -f README.md ]; then
          echo "# Apache Burr Website" > README.md
          echo "This branch contains the built site (landing page + docs)." >> README.md
        fi
 
        git add -A
 
        if [ -n "$(git status --porcelain)" ]; then
          git commit -m "Deploy site from ${{ github.sha }}"
          git push https://x-access-token:${{ github.token }}@github.com/${{ github.repository }}.git $TARGET_BRANCH
          echo "Deployed to $TARGET_BRANCH"
        else
          echo "No changes to deploy"
        fi