preview.yml

name: PR Preview on Cloudflare Pages

on:
  workflow_run:
    workflows: ["Build"]
    types: ["completed"]

permissions:
  actions: read
  pull-requests: write

jobs:
  preview:
    name: Preview
    runs-on: ubuntu-latest
    if: >
      github.event.workflow_run.event == 'pull_request'
      && github.event.workflow_run.conclusion == 'success'
    steps:
      - name: Download dist
        uses: actions/github-script@v7
        with:
          script: |
            var artifact = (await github.rest.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: ${{ github.event.workflow_run.id }},
            })).data.artifacts.find(x => x.name == "dist");
            var download = await github.rest.actions.downloadArtifact({
               owner: context.repo.owner,
               repo: context.repo.repo,
               artifact_id: artifact.id,
               archive_format: 'zip',
            });
            var fs = require('fs');
            fs.writeFileSync('${{github.workspace}}/dist.zip', Buffer.from(download.data));
      - name: Extract dist archive
        run: |
          unzip dist.zip
          echo "pr=$(cat .pr)" >> $GITHUB_ENV
      - name: Publish preview to Cloudflare Pages
        id: publish
        uses: cloudflare/pages-action@v1
        with:
          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          projectName: academy-admin-preview
          directory: dist
          branch: ${{ format('pr-{0}', env.pr) }}
      - name: Prepare comment
        run: |
          url="${{ steps.publish.outputs.url }}"
          size=$(du -sh dist | cut -f1)
          echo "**Preview deployed to ${url}** (total size: ${size})" > comment
      - name: Comment preview url
        uses: thollander/actions-comment-pull-request@v2
        with:
          filePath: comment
          pr_number: ${{ env.pr }}
          comment_tag: preview
          mode: recreate