deploy_preview.yml

name: Deploy PR preview

on:
  workflow_run:
    workflows: ["Build PR preview"]
    types:
      - completed

jobs:
  deploy-preview:
    runs-on: ubuntu-latest
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - uses: actions/setup-python@v2
        with:
          python-version: 3.x

      - name: "Download PR number"
        uses: actions/github-script@v3.1.0
        with:
          script: |
            var artifacts = await github.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: ${{github.event.workflow_run.id }},
            });
            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "pr"
            })[0];
            var download = await github.actions.downloadArtifact({
               owner: context.repo.owner,
               repo: context.repo.repo,
               artifact_id: matchArtifact.id,
               archive_format: 'zip',
            });
            var fs = require('fs');
            fs.writeFileSync('${{github.workspace}}/pr.zip', Buffer.from(download.data));
      - run: |
          unzip pr.zip
          echo "pr-number=$(cat NB)" >> "$GITHUB_ENV"
        shell: bash

      - name: "Download built site"
        uses: actions/github-script@v3.1.0
        with:
          script: |
            var artifacts = await github.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: ${{github.event.workflow_run.id }},
            });
            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "pr_site"
            })[0];
            var download = await github.actions.downloadArtifact({
               owner: context.repo.owner,
               repo: context.repo.repo,
               artifact_id: matchArtifact.id,
               archive_format: 'zip',
            });
            var fs = require('fs');
            fs.writeFileSync('${{github.workspace}}/pr_site.zip', Buffer.from(download.data));
      - run: unzip pr_site.zip

      - name: Deploy preview
        uses: access-nri/pr-preview-action@v2.1.1
        with:
          source-dir: site
          action: deploy
          pr-number: ${{ env.pr-number }}