preview.yml

name: Deploy PR Preview

on:
  pull_request:
    branches:
      - main  # Adjust if needed

jobs:
  build-preview:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: '3.1'  # Adjust as needed

      - name: Install Jekyll deps
        run: |
          gem install bundler
          bundle install

      - name: Build Jekyll site
        run: |
          bundle exec jekyll build --baseurl "/website-previews/pr-${{ github.event.pull_request.number }}" --destination _site

      - name: Deploy to website-previews repo
        uses: peaceiris/actions-gh-pages@v3
        with:
          external_repository: cersonsky-lab/website-previews
          publish_dir: ./_site
          publish_branch: gh-pages
          destination_dir: pr-${{ github.event.pull_request.number }}
          deploy_key: ${{ secrets.PREVIEW_DEPLOY_KEY }}

      - name: Wait for GitHub Pages deployment to propagate
        run: |
          echo "Checking preview URL: https://cersonsky-lab.github.io/website-previews/pr-${{ github.event.pull_request.number }}/"
          for i in {1..10}; do
            http_status=$(curl -o /dev/null -s -w "%{http_code}\n" https://cersonsky-lab.github.io/website-previews/pr-${{ github.event.pull_request.number }}/)
            if [ "$http_status" -eq 200 ]; then
              echo "Preview is live!"
              break
            else
              echo "Waiting... ($i)"
              sleep 10
            fi
          done

      - name: Comment on PR with preview link
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          message: |
            🚀 Preview your site is ready:
            https://cersonsky-lab.github.io/website-previews/pr-${{ github.event.pull_request.number }}