deploy-preview.yml

# Deploy preview to Cloudflare Pages
name: Deploy preview

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

jobs:
  deploy:
    runs-on: ubuntu-latest
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'

    permissions: write-all

    steps:
      - name: Download artifact
        uses: actions/github-script@v6
        with:
          script: |
            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: ${{github.event.workflow_run.id }},
            });
            const matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "build"
            })[0];
            const download = await github.rest.actions.downloadArtifact({
               owner: context.repo.owner,
               repo: context.repo.repo,
               artifact_id: matchArtifact.id,
               archive_format: 'zip',
            });
            const fs = require('fs');
            fs.writeFileSync('${{github.workspace}}/build.zip', Buffer.from(download.data));
      - run: unzip build.zip -d build
      - name: Deploy preview to Cloudflare Pages
        id: deploy
        uses: cloudflare/pages-action@v1
        with:
          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          projectName: wiki
          directory: build
          gitHubToken: ${{ secrets.GITHUB_TOKEN }} # GitHub Deployments
          wranglerVersion: "3"
      - name: Find PR number
        id: find_pr_number
        run: |
          echo "pr_number=$(cat ./build/PR_NR)" >> $GITHUB_OUTPUT
      - name: Find comment
        uses: peter-evans/find-comment@v2
        id: find_comment
        with:
          issue-number: ${{ steps.find_pr_number.outputs.pr_number }}
          comment-author: "github-actions[bot]"
          body-includes: "Preview URL:"
      - name: Create or update comment
        uses: peter-evans/create-or-update-comment@v3
        with:
          comment-id: ${{ steps.find_comment.outputs.comment-id }}
          issue-number: ${{ steps.find_pr_number.outputs.pr_number }}
          body: |
            Preview URL: ${{ steps.deploy.outputs.alias }} :rocket:
          edit-mode: replace