name: Security

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  schedule:
    # Run security scans daily at 2 AM UTC
    - cron: '0 2 * * *'
  workflow_dispatch:

jobs:
  vulnerability-scan:
    name: Vulnerability Scan
    runs-on: ubuntu-latest
    permissions:
      contents: read

    steps:
      - name: Checkout code
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3

      - name: Set up Go
        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version-file: "go.mod"

      - name: Install libpcap
        run: sudo apt-get install -y libpcap-dev

      - name: Install govulncheck
        run: go install golang.org/x/vuln/cmd/govulncheck@latest

      - name: Run govulncheck (Official Go vulnerability scanner)
        run: |
          echo "::group::Running govulncheck"
          govulncheck ./...
          echo "::endgroup::"

  static-analysis:
    name: Static Security Analysis
    runs-on: ubuntu-latest
    permissions:
      contents: read

    steps:
      - name: Checkout code
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3

      - name: Set up Go
        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version-file: "go.mod"

      - name: Install libpcap
        run: sudo apt-get install -y libpcap-dev

      - name: Install static analysis tools
        run: |
          go install honnef.co/go/tools/cmd/staticcheck@latest

      - name: Run staticcheck security analysis
        run: |
          echo "::group::Running staticcheck"
          staticcheck ./...
          echo "::endgroup::"

      - name: Run Semgrep security analysis
        uses: semgrep/semgrep-action@713efdd345f3035192eaa63f56867b88e63e4e5d # v1 (no v1.x.y semver tag exists)
        with:
          config: >-
            p/security-audit
            p/secrets
            p/golang
          generateSarif: "1"
        continue-on-error: true

      - name: Upload Semgrep SARIF results
        if: always()
        uses: github/codeql-action/upload-sarif@87557b9c84dde89fdd9b10e88954ac2f4248e463 # v4.36.1
        with:
          sarif_file: semgrep.sarif
        continue-on-error: true

  dependency-review:
    name: Dependency Review
    runs-on: ubuntu-latest
    permissions:
      contents: read
    if: github.event_name == 'pull_request'

    steps:
      - name: Checkout code
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3

      - name: Dependency Review
        uses: actions/dependency-review-action@a1d282b36b6f3519aa1f3fc636f609c47dddb294 # v5.0.0
        with:
          fail-on-severity: moderate
          allow-ghsas: GHSA-xxxx-xxxx-xxxx  # Add specific allowlisted advisories if needed
          deny-licenses: GPL-2.0, LGPL-2.0  # Add licenses to deny if needed

  security-summary:
    name: Security Summary
    runs-on: ubuntu-latest
    needs: [vulnerability-scan, static-analysis]
    if: always()
    permissions:
      contents: read

    steps:
      - name: Security scan summary
        run: |
          echo "## Security Scan Results" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY

          if [[ "${{ needs.vulnerability-scan.result }}" == "success" ]]; then
            echo "✅ **Vulnerability Scan**: PASSED" >> $GITHUB_STEP_SUMMARY
          else
            echo "❌ **Vulnerability Scan**: FAILED" >> $GITHUB_STEP_SUMMARY
          fi

          if [[ "${{ needs.static-analysis.result }}" == "success" ]]; then
            echo "✅ **Static Analysis**: PASSED" >> $GITHUB_STEP_SUMMARY
          else
            echo "❌ **Static Analysis**: FAILED" >> $GITHUB_STEP_SUMMARY
          fi

          echo "" >> $GITHUB_STEP_SUMMARY
          echo "For detailed results, check the individual job logs above." >> $GITHUB_STEP_SUMMARY

      - name: Fail on security issues
        if: needs.vulnerability-scan.result == 'failure' || needs.static-analysis.result == 'failure'
        run: |
          echo "Security scan detected issues. Please review the results above."
          exit 1