cloudflare-docs/.github/workflows/publish-preview.yml

on:
  push:
    branches-ignore:
      - production

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  publish:
    runs-on: ubuntu-22.04
    permissions:
      contents: read
      pull-requests: write
    name: Publish Preview
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - uses: actions/setup-node@v4
        with:
          node-version: 22.x
          cache: npm
      - run: npm ci
      - uses: actions/cache/restore@v4
        with:
          path: |
            node_modules/.astro
          key: static
      - run: npm run build
        name: Build
        env:
          NODE_OPTIONS: --max-old-space-size=4096
      - run: npx wrangler versions upload
        name: Deploy to Cloudflare Workers
        env:
          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          WRANGLER_OUTPUT_FILE_PATH: wrangler-logs.json
      - name: Post preview URL on PR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR=$(gh pr list --head ${{ github.ref_name }} --limit 1 --json number --jq '.[].number')

          if [ -n "$PR" ]; then
            URL=$(cat wrangler-logs.json | jq -r 'select(.type=="version-upload") | .preview_url')

            if [ -n "$URL" ]; then
              BODY="**Preview URL:** $URL"
              gh pr comment "$PR" --edit-last --body "$BODY" || gh pr comment "$PR" --body "$BODY"
            fi
          fi
      - uses: actions/cache/save@v4
        if: always()
        with:
          path: |
            node_modules/.astro
          key: static