test-link.yml

name: Update PR Description

on:
  pull_request_target: # use this trigger to run on external pull requests too
    types: [opened, synchronize]

jobs:
  update-description:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
    steps:
      - name: Update PR description
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const prNumber = context.payload.pull_request.number;
            const owner = context.payload.pull_request.head.repo.owner.login;
            const repo = context.payload.pull_request.head.repo.name;
            const commit = context.payload.pull_request.head.sha;
            const link = `https://raw.githack.com/${owner}/${repo}/${commit}/dev/web-demo.html`;

            const { data: pullRequest } = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: prNumber,
            });

            if (!pullRequest.body.includes(link)) {
              const updatedBody = `${pullRequest.body}\n\n[Open web-demo @ ${commit}](${link})`;

              await github.rest.pulls.update({
                owner: context.repo.owner,
                repo: context.repo.repo,
                pull_number: prNumber,
                body: updatedBody,
              });
            }