preview.yml

name: 'Preview'
on:
  pull_request:
    types:
      - synchronize
      - opened
      - closed

env:
  BRANCH: ${{ github.event.pull_request.head.ref }}
  CC_CLEVER_TOOLS_PREVIEWS_CELLAR_KEY_ID: ${{ secrets.CC_CLEVER_TOOLS_PREVIEWS_CELLAR_KEY_ID }}
  CC_CLEVER_TOOLS_PREVIEWS_CELLAR_SECRET_KEY: ${{ secrets.CC_CLEVER_TOOLS_PREVIEWS_CELLAR_SECRET_KEY }}

jobs:
  wait_for_build:
    name: 'Wait for build to succeed'
    if: |
      (github.event.action == 'synchronize' || github.event.action == 'opened')
      && github.event.repository.fork == false
      && !startsWith(github.event.pull_request.head.ref, 'release-please--')
    runs-on: ubuntu-latest
    steps:
      - name: 'Wait for build to succeed'
        uses: lewagon/wait-on-check-action@v1.3.1
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          check-name: Build
          ref: ${{ github.event.pull_request.head.sha }}
          allowed-conclusions: success
  publish:
    name: 'Publish Preview'
    needs: wait_for_build
    runs-on: ubuntu-latest
    steps:
      - name: '[Prepare] Checkout'
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: '[Prepare] Setup Node.js'
        uses: actions/setup-node@v3
        with:
          node-version-file: 'package.json'
          cache: 'npm'
      - name: '[Prepare] Install dependencies'
        run: npm ci
      - name: '[Prepare] Check if a preview already exists'
        id: check_preview
        run: |
          if node scripts/job-preview.js get ${BRANCH} > /dev/null 2>&1; then
            echo "exists=yes" >> $GITHUB_OUTPUT
          else
            echo "exists=no" >> $GITHUB_OUTPUT
          fi

      - name: '[Run] Build preview'
        run: node scripts/job-preview.js build ${BRANCH}
      - name: '[Run] Publish preview'
        run: node scripts/job-preview.js publish ${BRANCH}

      - name: '[Finalize] Get preview links'
        id: get_preview_links
        run: |
          PREVIEW_LINKS=$(node scripts/job-preview.js links $BRANCH | sed -z 's/\n/\\n/g'; echo)
          echo "PREVIEW_LINKS=${PREVIEW_LINKS::-2}" >> $GITHUB_ENV
      - name: '[Finalize] Add comment'
        if: steps.check_preview.outputs.exists == 'no'
        uses: actions/github-script@v6
        with:
          script: |
            const links = "${{ env.PREVIEW_LINKS }}";
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: `🔎 A preview has been automatically published:\n\n${links}\n\n\n_This preview will be deleted once this PR is closed._`
            });
      - name: '[Finalize] Edit comment'
        if: steps.check_preview.outputs.exists == 'yes'
        uses: actions/github-script@v6
        with:
          script: |
            const comments = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number
            });

            const comment = comments.data.find((comment) => comment.body.startsWith(`🔎 A preview has been automatically published:`));

            if (comment != null) {
              const links = "${{ env.PREVIEW_LINKS }}";

              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: comment.id,
                body: `🔎 A preview has been automatically published:\n\n${links}\n\n\n_This preview will be deleted once this PR is closed._`
              });
            }
  delete:
    if: |
      github.event.action == 'closed'
      && github.event.repository.fork == false
      && !startsWith(github.event.pull_request.head.ref, 'release-please--')
    name: 'Delete Preview'
    runs-on: ubuntu-latest
    steps:
      - name: '[Prepare] Checkout'
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: '[Prepare] Setup Node.js'
        uses: actions/setup-node@v3
        with:
          node-version-file: 'package.json'
          cache: 'npm'
      - name: '[Prepare] Install dependencies'
        run: npm ci

      - name: '[Run] Delete preview'
        run: node scripts/job-preview.js delete ${BRANCH}

      - name: '[Finalize] Add comment'
        uses: actions/github-script@v6
        with:
          script: |
            await github.rest.issues.createComment({
             owner: context.repo.owner,
             repo: context.repo.repo,
             issue_number: context.issue.number,
              body: `🔎 The preview has been automatically deleted.`
            });