---
name: Skill Security Audit

'on':
  pull_request:
    types: [opened, synchronize, reopened]
    paths:
      - 'engineering/**'
      - 'engineering-team/**'
      - 'business-growth/**'
      - 'c-level-advisor/**'
      - 'documentation/**'
      - 'finance/**'
      - 'marketing-skill/**'
      - 'product-team/**'
      - 'project-management/**'
      - 'ra-qm-team/**'
      - 'agents/**'
      - 'templates/**'

concurrency:
  group: security-audit-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  detect-changes:
    name: Detect changed skills
    runs-on: ubuntu-latest
    permissions:
      contents: read
    outputs:
      skills: ${{ steps.find.outputs.skills }}
      has_skills: ${{ steps.find.outputs.has_skills }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Find changed skill directories
        id: find
        run: |
          # Get list of changed files in PR
          CHANGED=$(git diff --name-only origin/${{ github.base_ref }}...HEAD 2>/dev/null || echo "")

          if [ -z "$CHANGED" ]; then
            echo "skills=[]" >> "$GITHUB_OUTPUT"
            echo "has_skills=false" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          # Extract unique skill root directories (top-level dirs containing SKILL.md)
          SKILLS=()
          SEEN=()
          while IFS= read -r file; do
            # Get the top-level directory
            dir=$(echo "$file" | cut -d'/' -f1-2)
            # Skip non-skill paths
            case "$dir" in
              .github/*|.claude/*|.codex/*|.gemini/*|docs/*|scripts/*|commands/*|standards/*|eval-workspace/*) continue ;;
            esac
            # Check if this directory has a SKILL.md (is a skill)
            skill_root=$(echo "$file" | cut -d'/' -f1)
            # Walk up to find the skill root that contains SKILL.md
            for candidate in "$skill_root" "$dir"; do
              if [ -f "$candidate/SKILL.md" ] && [[ ! " ${SEEN[*]} " =~ " $candidate " ]]; then
                SKILLS+=("$candidate")
                SEEN+=("$candidate")
                break
              fi
            done
          done <<< "$CHANGED"

          if [ ${#SKILLS[@]} -eq 0 ]; then
            echo "skills=[]" >> "$GITHUB_OUTPUT"
            echo "has_skills=false" >> "$GITHUB_OUTPUT"
          else
            # Build JSON array
            JSON="["
            for i in "${!SKILLS[@]}"; do
              [ $i -gt 0 ] && JSON+=","
              JSON+="\"${SKILLS[$i]}\""
            done
            JSON+="]"
            echo "skills=$JSON" >> "$GITHUB_OUTPUT"
            echo "has_skills=true" >> "$GITHUB_OUTPUT"
            echo "Changed skills: $JSON"
          fi

  audit:
    name: Security audit
    needs: detect-changes
    if: needs.detect-changes.outputs.has_skills == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Run security auditor on changed skills
        id: audit
        run: |
          AUDITOR="engineering/skill-security-auditor/scripts/skill_security_auditor.py"
          SKILLS='${{ needs.detect-changes.outputs.skills }}'
          REPORT_FILE=$(mktemp)
          OVERALL_EXIT=0

          echo "## 🔒 Skill Security Audit Results" > "$REPORT_FILE"
          echo "" >> "$REPORT_FILE"

          # Parse JSON array of skill dirs
          for skill_dir in $(echo "$SKILLS" | python3 -c "import sys,json; [print(s) for s in json.load(sys.stdin)]"); do
            echo "::group::Auditing $skill_dir"
            echo "Scanning: $skill_dir"

            # Run auditor in strict mode with JSON output
            JSON_OUT=$(python3 "$AUDITOR" "$skill_dir" --strict --json 2>&1) && EXIT_CODE=$? || EXIT_CODE=$?

            # Try to parse JSON output
            VERDICT=$(echo "$JSON_OUT" | python3 -c "
          import sys, json
          try:
              d = json.load(sys.stdin)
              v = d.get('verdict', 'UNKNOWN')
              c = d.get('summary', {}).get('critical', 0)
              h = d.get('summary', {}).get('high', 0)
              i = d.get('summary', {}).get('info', 0)
              t = d.get('summary', {}).get('total', 0)
              print(f'{v}|{c}|{h}|{i}|{t}')
          except:
              print('ERROR|0|0|0|0')
          " 2>/dev/null || echo "ERROR|0|0|0|0")

            IFS='|' read -r V CRIT HIGH INFO TOTAL <<< "$VERDICT"

            # Map verdict to emoji
            case "$V" in
              PASS) ICON="✅" ;;
              WARN) ICON="⚠️" ;;
              FAIL) ICON="❌"; OVERALL_EXIT=1 ;;
              *)    ICON="❓"; OVERALL_EXIT=1 ;;
            esac

            echo "### $ICON \`$skill_dir\` — $V" >> "$REPORT_FILE"
            echo "" >> "$REPORT_FILE"

            if [ "$TOTAL" -gt 0 ]; then
              echo "| Severity | Count |" >> "$REPORT_FILE"
              echo "|----------|-------|" >> "$REPORT_FILE"
              [ "$CRIT" -gt 0 ] && echo "| 🔴 Critical | $CRIT |" >> "$REPORT_FILE"
              [ "$HIGH" -gt 0 ] && echo "| 🟡 High | $HIGH |" >> "$REPORT_FILE"
              [ "$INFO" -gt 0 ] && echo "| ⚪ Info | $INFO |" >> "$REPORT_FILE"
              echo "" >> "$REPORT_FILE"

              # Include finding details for WARN/FAIL
              if [ "$V" != "PASS" ]; then
                echo "<details><summary>Findings detail</summary>" >> "$REPORT_FILE"
                echo "" >> "$REPORT_FILE"
                echo '```json' >> "$REPORT_FILE"
                echo "$JSON_OUT" | python3 -c "
          import sys, json
          try:
              d = json.load(sys.stdin)
              findings = d.get('findings', [])
              for f in findings:
                  if f.get('severity') in ('CRITICAL', 'HIGH'):
                      print(json.dumps(f, indent=2))
          except:
              pass
          " >> "$REPORT_FILE"
                echo '```' >> "$REPORT_FILE"
                echo "</details>" >> "$REPORT_FILE"
                echo "" >> "$REPORT_FILE"
              fi
            else
              echo "No findings." >> "$REPORT_FILE"
              echo "" >> "$REPORT_FILE"
            fi

            echo "::endgroup::"
          done

          # Save report for comment step
          echo "report_file=$REPORT_FILE" >> "$GITHUB_OUTPUT"
          echo "exit_code=$OVERALL_EXIT" >> "$GITHUB_OUTPUT"

      - name: Post audit results to job summary
        if: always()
        run: |
          REPORT_FILE="${{ steps.audit.outputs.report_file }}"
          if [ -f "$REPORT_FILE" ]; then
            cat "$REPORT_FILE" >> "$GITHUB_STEP_SUMMARY"
          fi

      - name: Post audit results as PR comment
        if: always()
        continue-on-error: true  # Fork PRs have read-only GITHUB_TOKEN
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const reportFile = '${{ steps.audit.outputs.report_file }}';
            let body = '## 🔒 Skill Security Audit\n\nNo report generated.';
            try {
              body = fs.readFileSync(reportFile, 'utf8');
            } catch (e) {
              console.log('Could not read report file:', e.message);
            }

            // Find and update existing comment or create new
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });
            const marker = '## 🔒 Skill Security Audit';
            const existing = comments.find(c => c.body.startsWith(marker));

            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body: body,
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: body,
              });
            }

      - name: Fail on critical findings
        if: steps.audit.outputs.exit_code == '1'
        run: |
          echo "::error::Security audit found CRITICAL findings. Merge blocked."
          exit 1