name: Security Scan

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

permissions:
  contents: read
  security-events: write

jobs:
  dependency-scan:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        component:
          - path: 'services/sync-coordinator'
            type: 'npm'
          - path: 'apps/daemon'
            type: 'cargo'
          - path: 'services/storage-hal'
            type: 'cargo'
          - path: 'services/compression-engine'
            type: 'cargo'
          - path: 'services/ml-optimizer'
            type: 'pip'
          - path: '.' 
            type: 'gradle'
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: 'fs'
          scan-ref: '${{ matrix.component.path }}'
          format: 'sarif'
          output: 'trivy-results-${{ matrix.component.type }}.sarif'
          severity: 'CRITICAL,HIGH,MEDIUM'
          
      - name: Upload Trivy scan results
        uses: github/codeql-action/upload-sarif@v3
        if: always()
        with:
          sarif_file: 'trivy-results-${{ matrix.component.type }}.sarif'
          category: 'trivy-${{ matrix.component.type }}'
          
  secret-scan:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        
      - name: Run GitLeaks secret scanner
        uses: gitleaks/gitleaks-action@v2
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITLEAKS_LICENSE: ${{ secrets.GITLEAKS_LICENSE }}
          
  code-security-scan:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        
      - name: Initialize CodeQL
        uses: github/codeql-action/init@v3
        with:
          languages: java, javascript, python, cpp
          queries: security-and-quality
          
      - name: Set up Java
        uses: actions/setup-java@v4
        with:
          java-version: '17'
          distribution: 'temurin'
          
      - name: Build with Gradle
        run: |
          chmod +x ./gradlew
          ./gradlew build -x test --no-daemon -x :apps:android:shared:build
        
      - name: Perform CodeQL Analysis
        uses: github/codeql-action/analyze@v3
        with:
          category: "/language:multi"
          
  semgrep-scan:
    runs-on: ubuntu-latest
    name: Semgrep Security Scan
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        
      - name: Run Semgrep
        run: |
          pip install semgrep
          semgrep scan --sarif --config=p/security-audit --config=p/kotlin --config=p/java --config=p/typescript --config=p/python --config=p/javascript --config=p/rust --output=semgrep.sarif || true
          
      - name: Upload SARIF file
        uses: github/codeql-action/upload-sarif@v3
        if: always()
        with:
          sarif_file: semgrep.sarif
          
  license-scan:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        
      - name: FOSSA Scan
        if: ${{ secrets.FOSSA_API_KEY != '' }}
        uses: fossas/fossa-action@main
        with:
          api-key: ${{ secrets.FOSSA_API_KEY }}
          run-tests: true
        continue-on-error: true
        
      - name: Skip FOSSA Scan
        if: ${{ secrets.FOSSA_API_KEY == '' }}
        run: |
          echo "FOSSA_API_KEY secret not found, skipping FOSSA scan"
          echo "To enable FOSSA scanning, add FOSSA_API_KEY to repository secrets"
        
  container-scan:
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
    strategy:
      matrix:
        service: [backup-engine, storage-hal, ml-optimizer, sync-coordinator]
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        
      - name: Check for Dockerfile
        id: dockerfile-check
        run: |
          cd services/${{ matrix.service }}
          if [ -f "Dockerfile" ]; then
            echo "dockerfile_exists=true" >> $GITHUB_OUTPUT
            echo "Dockerfile found for ${{ matrix.service }}"
          else
            echo "dockerfile_exists=false" >> $GITHUB_OUTPUT
            echo "No Dockerfile found for ${{ matrix.service }}, skipping container scan"
          fi
          
      - name: Build Docker image for scanning
        if: steps.dockerfile-check.outputs.dockerfile_exists == 'true'
        run: |
          cd services/${{ matrix.service }}
          docker build -t scan-image:${{ matrix.service }} .
          
      - name: Run Trivy container scan
        if: steps.dockerfile-check.outputs.dockerfile_exists == 'true'
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: 'scan-image:${{ matrix.service }}'
          format: 'sarif'
          output: 'container-scan-${{ matrix.service }}.sarif'
          severity: 'CRITICAL,HIGH'
        continue-on-error: true
          
      - name: Upload container scan results
        if: steps.dockerfile-check.outputs.dockerfile_exists == 'true' && always()
        uses: github/codeql-action/upload-sarif@v3
        with:
          sarif_file: 'container-scan-${{ matrix.service }}.sarif'
          category: 'container-${{ matrix.service }}'
        continue-on-error: true
          
  infrastructure-scan:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        
      - name: Check infrastructure directory
        id: infra-check
        run: |
          if [ -d "infrastructure" ]; then
            echo "infra_exists=true" >> $GITHUB_OUTPUT
            echo "Infrastructure directory found"
          else
            echo "infra_exists=false" >> $GITHUB_OUTPUT
            echo "Infrastructure directory not found, skipping IaC scan"
          fi
        
      - name: Run Checkov IaC scan
        if: steps.infra-check.outputs.infra_exists == 'true'
        uses: bridgecrewio/checkov-action@master
        with:
          directory: infrastructure/
          framework: terraform,kubernetes,dockerfile
          output_format: sarif
          output_file_path: checkov-results.sarif
          log_level: WARNING
        continue-on-error: true
          
      - name: Upload Checkov scan results
        if: steps.infra-check.outputs.infra_exists == 'true' && always()
        uses: github/codeql-action/upload-sarif@v3
        with:
          sarif_file: checkov-results.sarif
          category: 'infrastructure'
        continue-on-error: true
          
  security-report:
    needs: [dependency-scan, secret-scan, code-security-scan, semgrep-scan, license-scan, container-scan, infrastructure-scan]
    runs-on: ubuntu-latest
    if: always()
    steps:
      - name: Security Scan Summary
        run: |
          echo "## Security Scan Results" >> $GITHUB_STEP_SUMMARY
          echo "- Dependency Scan: ${{ needs.dependency-scan.result }}" >> $GITHUB_STEP_SUMMARY
          echo "- Secret Scan: ${{ needs.secret-scan.result }}" >> $GITHUB_STEP_SUMMARY
          echo "- Code Security Scan: ${{ needs.code-security-scan.result }}" >> $GITHUB_STEP_SUMMARY
          echo "- Semgrep Scan: ${{ needs.semgrep-scan.result }}" >> $GITHUB_STEP_SUMMARY
          echo "- License Scan: ${{ needs.license-scan.result }}" >> $GITHUB_STEP_SUMMARY
          echo "- Container Scan: ${{ needs.container-scan.result }}" >> $GITHUB_STEP_SUMMARY
          echo "- Infrastructure Scan: ${{ needs.infrastructure-scan.result }}" >> $GITHUB_STEP_SUMMARY