pr-manipulation.yml

name: PR Comment Generation

on:
  workflow_run:
    workflows: ["Build and Test"]
    types:
      - completed

jobs:
  comment_on_pr:
    runs-on: ubuntu-latest
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'
    steps:
      - name: 'Download artifact'
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
              ...context.repo,
              run_id: ${{github.event.workflow_run.id }},
            });
            const matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "pr"
            })[0];
            const download = await github.rest.actions.downloadArtifact({
              ...context.repo,
              artifact_id: matchArtifact.id,
              archive_format: 'zip',
            });
            
            fs.writeFileSync('${{github.workspace}}/pr.zip', Buffer.from(download.data));
      - run: unzip pr.zip
      
      - name: 'Comment on PR'
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const fs = require('fs');
            const issueNumber = Number(fs.readFileSync('./NR'));
            const summaryContent = fs.readFileSync('./step_summary.md', 'utf-8');

            const existingCommentsOpts = github.rest.issues.listComments.endpoint.merge({
              ...context.repo, issue_number: issueNumber
            });
            const existingComments = await github.paginate(existingCommentsOpts);
            const TAG = 'execution';
            const tagPattern = `<!-- pr_asset_summary_comment "${TAG}" -->`;
            const body = `${summaryContent}\n${tagPattern}`;
            const preExistingComment = existingComments.find((comment) => comment.body?.includes(tagPattern));
            if(preExistingComment) {
              await github.rest.issues.updateComment({ ...context.repo, comment_id: preExistingComment.id, body });
            } else {
              await github.rest.issues.createComment({ ...context.repo, issue_number: issueNumber, body });
            }