name: PR Info (comment)
 
on:
  workflow_run:
    workflows: ["PR Info"]
    types:
      - completed
 
jobs:
  comment:
    name: PR Info
    runs-on: ubuntu-20.04
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'
    steps:
    # from https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
    - name: 'Download artifact'
      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
 
    - name: Set variable
      run: |
        PR_ID=$(cat ./NR)
        echo "PR_ID=$PR_ID" >> $GITHUB_ENV
 
    - name: Update GitHub comment
      uses: marocchino/sticky-pull-request-comment@3d60a5b2dae89d44e0c6ddc69dd7536aec2071cd
      with:
        path: ./comment.txt
        number: ${{ env.PR_ID }}