name: Skill Validator — PR Comment

# Posts results from the "Skill Validator — PR Gate" workflow.
# Runs with write permissions but never checks out PR code,
# so it is safe for fork PRs.

on:
  workflow_run:
    workflows: ["Skill Validator — PR Gate"]
    types: [completed]

permissions:
  pull-requests: write
  actions: read # needed to download artifacts

jobs:
  comment:
    runs-on: ubuntu-latest
    if: github.event.workflow_run.event == 'pull_request'
    steps:
      - name: Download results artifact
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        with:
          name: skill-validator-results
          run-id: ${{ github.event.workflow_run.id }}
          github-token: ${{ github.token }}

      - name: Post PR comment with results
        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
        with:
          script: |
            const fs = require('fs');

            const total = parseInt(fs.readFileSync('total.txt', 'utf8').trim(), 10);
            if (total === 0) {
              console.log('No skills/agents were checked — skipping comment.');
              return;
            }

            const prNumber = parseInt(fs.readFileSync('pr-number.txt', 'utf8').trim(), 10);
            const exitCode = fs.readFileSync('exit-code.txt', 'utf8').trim();
            const skillCount = parseInt(fs.readFileSync('skill-count.txt', 'utf8').trim(), 10);
            const agentCount = parseInt(fs.readFileSync('agent-count.txt', 'utf8').trim(), 10);
            const totalChecked = skillCount + agentCount;

            const marker = '<!-- skill-validator-results -->';
            const output = fs.readFileSync('sv-output.txt', 'utf8').trim();

            // Count errors, warnings, advisories from output
            const errorCount = (output.match(/\bError\b/gi) || []).length;
            const warningCount = (output.match(/\bWarning\b/gi) || []).length;
            const advisoryCount = (output.match(/\bAdvisory\b/gi) || []).length;

            let statusLine;
            if (errorCount > 0) {
              statusLine = `**${totalChecked} resource(s) checked** | ⛔ ${errorCount} error(s) | ⚠️ ${warningCount} warning(s) | ℹ️ ${advisoryCount} advisory(ies)`;
            } else if (warningCount > 0) {
              statusLine = `**${totalChecked} resource(s) checked** | ⚠️ ${warningCount} warning(s) | ℹ️ ${advisoryCount} advisory(ies)`;
            } else {
              statusLine = `**${totalChecked} resource(s) checked** | ✅ All checks passed`;
            }

            const body = [
              marker,
              '## 🔍 Skill Validator Results',
              '',
              statusLine,
              '',
              '<details>',
              '<summary>Full output</summary>',
              '',
              '```',
              output,
              '```',
              '',
              '</details>',
              '',
              exitCode !== '0'
                ? '> **Note:** Errors were found. These are currently reported as warnings and do not block merge. Please review and address when possible.'
                : '',
            ].join('\n');

            // Find existing comment with our marker
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
              per_page: 100,
            });

            const existing = comments.find(c => c.body.includes(marker));

            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body,
              });
              console.log(`Updated existing comment ${existing.id}`);
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: prNumber,
                body,
              });
              console.log('Created new PR comment');
            }