generate-preview.yml

name: Generate Preview

on:
  pull_request_target:
    types: [labeled]

permissions:
  contents: read
  pull-requests: write

jobs:
  generate-preview:
    environment:
      name: firebase-staging
      url: 'https://staging.nodejs.dev/${{ github.event.pull_request.number }}/'
    runs-on: ubuntu-latest
    if: github.event.label.name == 'create-preview'
    steps:
      - name: Git Checkout
        uses: actions/checkout@v3.3.0
        with:
          persist-credentials: false
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Auth G Cloud
        uses: 'google-github-actions/auth@v1'
        with:
          credentials_json: '${{ secrets.FIREBASE_SERVICE_ACCOUNT_NODEJS_INFRASTRUCTURE }}'

      - name: Setup G Cloud
        uses: google-github-actions/setup-gcloud@v1

      - name: Remove the PR Label
        uses: actions/github-script@v6
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            github.rest.issues.removeLabel({
              issue_number: ${{ github.event.pull_request.number }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              name: ['create-preview']
            })

      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version-file: '.nvmrc'
          cache: npm

      - name: Install NPM packages
        run: npm ci

      - uses: jongwooo/gatsby-cache@v1.4.1
        with:
          key: generate-preview-gatsby-ubuntu-latest

      - name: Build Gatsby
        run: npm run build-ci
        env:
          PATH_PREFIX: ${{ github.event.pull_request.number }}/

      - name: Upload to G Cloud Storage
        run: gsutil -m rsync -R public gs://staging.nodejs.dev/${{ github.event.pull_request.number }}/

      - name: Comment on PR
        uses: actions/github-script@v6
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            github.rest.issues.createComment({
              issue_number: ${{ github.event.pull_request.number }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: 'Please find a preview at: https://staging.nodejs.dev/${{ github.event.pull_request.number }}/'
            });