name: Security Scanning

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

jobs:
  # Python Security Scanning with Bandit
  bandit-security-scan:
    runs-on: ubuntu-latest
    name: Bandit Security Scan
    
    strategy:
      matrix:
        # Define directories to scan
        directory:
          - "apps/coordinator-api/src"
          - "cli/aitbc_cli"
          - "packages/py/aitbc-core/src"
          - "packages/py/aitbc-crypto/src"
          - "packages/py/aitbc-sdk/src"
          - "tests"
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
    
    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.11'
    
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install bandit[toml] safety
        # Install project dependencies for context
        if [ -f "${{ matrix.directory }}/requirements.txt" ]; then
          pip install -r "${{ matrix.directory }}/requirements.txt" 2>/dev/null || true
        fi
        if [ -f "pyproject.toml" ]; then
          pip install -e . 2>/dev/null || true
        fi
    
    - name: Run Bandit security scan
      run: |
        echo "Scanning directory: ${{ matrix.directory }}"
        bandit -r ${{ matrix.directory }} \
          -f json \
          -o bandit-report-${{ matrix.directory }}.json \
          --severity-level medium \
          --confidence-level medium || true
        
        # Also generate human-readable report
        bandit -r ${{ matrix.directory }} \
          -f txt \
          -o bandit-report-${{ matrix.directory }}.txt \
          --severity-level medium \
          --confidence-level medium || true
    
    - name: Run Safety check for known vulnerabilities
      run: |
        echo "Running Safety check for known vulnerabilities..."
        safety check --json --output safety-report.json || true
        safety check || true
    
    - name: Upload Bandit reports
      uses: actions/upload-artifact@v3
      if: always()
      with:
        name: bandit-reports-${{ matrix.directory }}
        path: |
          bandit-report-${{ matrix.directory }}.json
          bandit-report-${{ matrix.directory }}.txt
        retention-days: 30
    
    - name: Upload Safety report
      uses: actions/upload-artifact@v3
      if: always()
      with:
        name: safety-report
        path: safety-report.json
        retention-days: 30
    
    - name: Comment PR with security findings
      if: github.event_name == 'pull_request'
      uses: actions/github-script@v6
      with:
        script: |
          const fs = require('fs');
          const path = require('path');
          
          try {
            const reportPath = `bandit-report-${{ matrix.directory }}.txt`;
            if (fs.existsSync(reportPath)) {
              const report = fs.readFileSync(reportPath, 'utf8');
              
              // Create summary
              const lines = report.split('\n');
              const issues = lines.filter(line => line.includes('Issue:')).length;
              
              const comment = `## 🔒 Security Scan Results for \`${{ matrix.directory }}\`
              
              **Bandit Security Scan**
              - Issues found: ${issues}
              - Severity: Medium and above
              - Confidence: Medium and above
              
              <details>
              <summary>📋 Detailed Report</summary>
              
              \`\`\`
              ${report}
              \`\`\`
              
              </details>
              
              ---
              *This security scan was automatically generated by Bandit.*`;
              
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: comment
              });
            }
          } catch (error) {
            console.log('Could not read security report:', error.message);
          }

  # CodeQL Security Analysis
  codeql-security-scan:
    runs-on: ubuntu-latest
    name: CodeQL Security Analysis
    permissions:
      actions: read
      contents: read
      security-events: write
    
    strategy:
      fail-fast: false
      matrix:
        language: [ 'python', 'javascript' ]
    
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
    
    - name: Initialize CodeQL
      uses: github/codeql-action/init@v2
      with:
        languages: ${{ matrix.language }}
        queries: security-extended,security-and-quality
    
    - name: Autobuild
      uses: github/codeql-action/autobuild@v2
    
    - name: Perform CodeQL Analysis
      uses: github/codeql-action/analyze@v2
      with:
        category: "/language:${{matrix.language}}"

  # Dependency Security Scanning
  dependency-security-scan:
    runs-on: ubuntu-latest
    name: Dependency Security Scan
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
    
    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.11'
    
    - name: Run dependency security scan
      run: |
        python -m pip install --upgrade pip
        pip install safety
        
        # Check for known vulnerabilities in dependencies
        echo "Scanning Python dependencies..."
        safety check --json --output python-safety-report.json || true
        safety check || true
        
        # Check npm dependencies if they exist
        if [ -f "apps/explorer-web/package.json" ]; then
          echo "Scanning npm dependencies..."
          cd apps/explorer-web
          npm audit --json > ../npm-audit-report.json 2>&1 || true
          npm audit || true
          cd ../..
        fi
        
        if [ -f "website/package.json" ]; then
          echo "Scanning website npm dependencies..."
          cd website
          npm audit --json > ../website-npm-audit-report.json 2>&1 || true
          npm audit || true
          cd ../..
        fi
    
    - name: Upload dependency security reports
      uses: actions/upload-artifact@v3
      if: always()
      with:
        name: dependency-security-reports
        path: |
          python-safety-report.json
          npm-audit-report.json
          website-npm-audit-report.json
        retention-days: 30

  # Container Security Scanning (if Docker is used)
  container-security-scan:
    runs-on: ubuntu-latest
    name: Container Security Scan
    if: contains(github.event.head_commit.modified, 'Dockerfile') || contains(github.event.head_commit.modified, 'docker-compose')
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
    
    - name: Run Trivy vulnerability scanner
      uses: aquasecurity/trivy-action@master
      with:
        image-ref: 'ghcr.io/${{ github.repository }}:latest'
        format: 'sarif'
        output: 'trivy-results.sarif'
    
    - name: Upload Trivy scan results to GitHub Security tab
      uses: github/codeql-action/upload-sarif@v2
      if: always()
      with:
        sarif_file: 'trivy-results.sarif'

  # Security Scorecard
  security-scorecard:
    runs-on: ubuntu-latest
    name: OSSF Scorecard
    permissions:
      security-events: write
      actions: read
      id-token: write
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        persist-credentials: false
    
    - name: Run analysis
      uses: ossf/scorecard-action@v2.3.1
      with:
        results_file: results.sarif
        results_format: sarif
        # Note: Running without repo_token for local analysis only
    
    - name: Upload SARIF to GitHub Security tab
      uses: github/codeql-action/upload-sarif@v2
      with:
        sarif_file: results.sarif

  # Security Summary Report
  security-summary:
    runs-on: ubuntu-latest
    name: Security Summary Report
    needs: [bandit-security-scan, codeql-security-scan, dependency-security-scan]
    if: always()
    
    steps:
    - name: Download all artifacts
      uses: actions/download-artifact@v3
    
    - name: Generate security summary
      run: |
        echo "# 🔒 Security Scan Summary" > security-summary.md
        echo "" >> security-summary.md
        echo "## Scan Results" >> security-summary.md
        echo "" >> security-summary.md
        
        # Bandit results
        echo "### Bandit Security Scan" >> security-summary.md
        echo "- Scanned multiple Python directories" >> security-summary.md
        echo "- Severity level: Medium and above" >> security-summary.md
        echo "- Confidence level: Medium and above" >> security-summary.md
        echo "" >> security-summary.md
        
        # CodeQL results
        echo "### CodeQL Security Analysis" >> security-summary.md
        echo "- Languages: Python, JavaScript" >> security-summary.md
        echo "- Queries: security-extended, security-and-quality" >> security-summary.md
        echo "" >> security-summary.md
        
        # Dependency results
        echo "### Dependency Security Scan" >> security-summary.md
        echo "- Python dependencies checked with Safety" >> security-summary.md
        echo "- npm dependencies checked with npm audit" >> security-summary.md
        echo "" >> security-summary.md
        
        # Additional info
        echo "### Additional Information" >> security-summary.md
        echo "- Scans run on: $(date)" >> security-summary.md
        echo "- Commit: ${{ github.sha }}" >> security-summary.md
        echo "- Branch: ${{ github.ref_name }}" >> security-summary.md
        echo "" >> security-summary.md
        
        echo "## Recommendations" >> security-summary.md
        echo "1. Review any high-severity findings immediately" >> security-summary.md
        echo "2. Update dependencies with known vulnerabilities" >> security-summary.md
        echo "3. Address security best practices recommendations" >> security-summary.md
        echo "4. Regular security audits and penetration testing" >> security-summary.md
    
    - name: Upload security summary
      uses: actions/upload-artifact@v3
      with:
        name: security-summary
        path: security-summary.md
        retention-days: 90
    
    - name: Comment PR with security summary
      if: github.event_name == 'pull_request'
      uses: actions/github-script@v6
      with:
        script: |
          const fs = require('fs');
          
          try {
            const summary = fs.readFileSync('security-summary.md', 'utf8');
            
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: summary
            });
          } catch (error) {
            console.log('Could not read security summary:', error.message);
          }