name: Security & Dependency Updates

on:
  schedule:
    # Run security scans daily at 3 AM UTC
    - cron: "0 3 * * *"
  workflow_dispatch:
  push:
    paths:
      - "requirements*.txt"
      - "Dockerfile"
      - ".gitea/workflows/security.yml"

env:
  PYTHON_VERSION: "3.11"
  # GitHub token for better rate limits and authentication
  GH_TOKEN: ${{ secrets.GH_TOKEN }}

jobs:
  # Dependency vulnerability scan
  dependency-scan:
    name: Dependency Security Scan
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip --root-user-action=ignore
          pip install --root-user-action=ignore safety bandit semgrep

      - name: Run Safety check
        run: |
          safety check -r requirements.txt --json --output safety-report.json || true
          safety check -r requirements-dev.txt --json --output safety-dev-report.json || true

      - name: Run Bandit security scan
        run: |
          bandit -r src/ -f json -o bandit-report.json || true

      - name: Run Semgrep security scan
        run: |
          semgrep --config=auto src/ --json --output=semgrep-report.json || true

      - name: Upload security reports
        uses: actions/upload-artifact@v3
        with:
          name: security-reports-${{ github.run_number }}
          path: |
            safety-report.json
            safety-dev-report.json
            bandit-report.json
            semgrep-report.json

      - name: Check for critical vulnerabilities
        run: |
          echo "🔍 Checking for critical vulnerabilities..."

          # Check Safety results
          if [ -f safety-report.json ]; then
            critical_count=$(jq '.vulnerabilities | length' safety-report.json 2>/dev/null || echo "0")
            if [ "$critical_count" -gt 0 ]; then
              echo "⚠️ Found $critical_count dependency vulnerabilities"
              jq '.vulnerabilities[] | "- \(.package_name) \(.installed_version): \(.vulnerability_id)"' safety-report.json
            else
              echo "✅ No dependency vulnerabilities found"
            fi
          fi

          # Check Bandit results
          if [ -f bandit-report.json ]; then
            high_severity=$(jq '.results[] | select(.issue_severity == "HIGH") | length' bandit-report.json 2>/dev/null | wc -l)
            if [ "$high_severity" -gt 0 ]; then
              echo "⚠️ Found $high_severity high-severity security issues"
            else
              echo "✅ No high-severity security issues found"
            fi
          fi

  # Docker image security scan
  docker-security-scan:
    name: Docker Security Scan
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Check GitHub token availability
        run: |
          if [ -z "${{ secrets.GH_TOKEN }}" ]; then
            echo "⚠️ GH_TOKEN not configured. Trivy scans may fail due to rate limits."
            echo "💡 To fix: Add GH_TOKEN secret in repository settings"
          else
            echo "✅ GH_TOKEN is configured"
          fi

      - name: Build Docker image for scanning
        run: |
          docker build -t ping-river-monitor:scan .
        env:
          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}

      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: "ping-river-monitor:scan"
          format: "json"
          output: "trivy-report.json"
          github-token: ${{ secrets.GH_TOKEN }}
        env:
          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
        continue-on-error: true

      - name: Run Trivy filesystem scan
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: "fs"
          scan-ref: "."
          format: "json"
          output: "trivy-fs-report.json"
          github-token: ${{ secrets.GH_TOKEN }}
        env:
          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
        continue-on-error: true

      - name: Upload Trivy reports
        uses: actions/upload-artifact@v3
        if: always()
        with:
          name: trivy-reports-${{ github.run_number }}
          path: |
            trivy-report.json
            trivy-fs-report.json

      - name: Check Trivy results
        run: |
          echo "🔍 Analyzing Docker security scan results..."

          if [ -f trivy-report.json ]; then
            critical_vulns=$(jq '.Results[]?.Vulnerabilities[]? | select(.Severity == "CRITICAL") | length' trivy-report.json 2>/dev/null | wc -l)
            high_vulns=$(jq '.Results[]?.Vulnerabilities[]? | select(.Severity == "HIGH") | length' trivy-report.json 2>/dev/null | wc -l)
            
            echo "Critical vulnerabilities: $critical_vulns"
            echo "High vulnerabilities: $high_vulns"
            
            if [ "$critical_vulns" -gt 0 ]; then
              echo "❌ Critical vulnerabilities found in Docker image!"
              exit 1
            elif [ "$high_vulns" -gt 5 ]; then
              echo "⚠️ Many high-severity vulnerabilities found"
            else
              echo "✅ Docker image security scan passed"
            fi
          fi

  # License compliance check
  license-check:
    name: License Compliance
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install pip-licenses
        run: |
          python -m pip install --upgrade pip --root-user-action=ignore
          pip install --root-user-action=ignore pip-licenses
          pip install --root-user-action=ignore -r requirements.txt

      - name: Check licenses
        run: |
          echo "📄 Checking dependency licenses..."
          pip-licenses --format=json --output-file=licenses.json
          pip-licenses --format=markdown --output-file=licenses.md

          # Check for problematic licenses
          problematic_licenses=("GPL" "AGPL" "LGPL")

          for license in "${problematic_licenses[@]}"; do
            if grep -i "$license" licenses.json; then
              echo "⚠️ Found potentially problematic license: $license"
            fi
          done

          echo "✅ License check completed"

      - name: Upload license report
        uses: actions/upload-artifact@v3
        with:
          name: license-report-${{ github.run_number }}
          path: |
            licenses.json
            licenses.md

  # Dependency update check
  dependency-update:
    name: Check for Dependency Updates
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install pip-check-updates equivalent
        run: |
          python -m pip install --upgrade pip --root-user-action=ignore
          pip install --root-user-action=ignore pip-review

      - name: Check for outdated packages
        run: |
          echo "📦 Checking for outdated packages..."
          pip install --root-user-action=ignore -r requirements.txt
          pip list --outdated --format=json > outdated-packages.json || true

          if [ -s outdated-packages.json ]; then
            echo "📋 Outdated packages found:"
            cat outdated-packages.json | jq -r '.[] | "- \(.name): \(.version) -> \(.latest_version)"'
          else
            echo "✅ All packages are up to date"
          fi

      - name: Create dependency update issue
        if: github.event_name == 'schedule'
        run: |
          if [ -s outdated-packages.json ] && [ "$(cat outdated-packages.json)" != "[]" ]; then
            echo "📝 Creating dependency update issue..."
            
            # Create issue body
            cat > issue-body.md << 'EOF'
          ## 📦 Dependency Updates Available

          The following packages have updates available:

          EOF
            
            cat outdated-packages.json | jq -r '.[] | "- **\(.name)**: \(.version) → \(.latest_version)"' >> issue-body.md
            
            cat >> issue-body.md << 'EOF'

          ## 🔍 Security Impact

          Please review each update for:
          - Security fixes
          - Breaking changes
          - Compatibility issues

          ## ✅ Action Items

          - [ ] Review changelog for each package
          - [ ] Test updates in development environment
          - [ ] Update requirements.txt
          - [ ] Run full test suite
          - [ ] Deploy to staging for validation

          ---
          *This issue was automatically created by the security workflow.*
          EOF
            
            echo "Issue body created. In a real implementation, you would create a Gitea issue here."
            cat issue-body.md
          fi

      - name: Upload dependency reports
        uses: actions/upload-artifact@v3
        with:
          name: dependency-reports-${{ github.run_number }}
          path: |
            outdated-packages.json
            issue-body.md

  # Code quality metrics
  code-quality:
    name: Code Quality Metrics
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install quality tools
        run: |
          python -m pip install --upgrade pip --root-user-action=ignore
          pip install --root-user-action=ignore radon xenon vulture
          pip install --root-user-action=ignore -r requirements.txt

      - name: Calculate code complexity
        run: |
          echo "📊 Calculating code complexity..."
          radon cc src/ --json > complexity-report.json
          radon mi src/ --json > maintainability-report.json

          echo "🔍 Complexity Summary:"
          radon cc src/ --average

          echo "🔧 Maintainability Summary:"
          radon mi src/

      - name: Find dead code
        run: |
          echo "🧹 Checking for dead code..."
          vulture src/ --json > dead-code-report.json || true

      - name: Check for code smells
        run: |
          echo "👃 Checking for code smells..."
          xenon --max-absolute B --max-modules A --max-average A src/ || true

      - name: Upload quality reports
        uses: actions/upload-artifact@v3
        with:
          name: code-quality-reports-${{ github.run_number }}
          path: |
            complexity-report.json
            maintainability-report.json
            dead-code-report.json

  # Security summary
  security-summary:
    name: Security Summary
    runs-on: ubuntu-latest
    needs: [dependency-scan, docker-security-scan, license-check, code-quality]
    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 Date:** $(date -u)" >> security-summary.md
          echo "**Repository:** ${{ github.repository }}" >> security-summary.md
          echo "**Commit:** ${{ github.sha }}" >> security-summary.md
          echo "" >> security-summary.md

          echo "## 📊 Results" >> security-summary.md
          echo "" >> security-summary.md

          # Dependency scan results
          if [ -f security-reports-*/safety-report.json ]; then
            vuln_count=$(jq '.vulnerabilities | length' security-reports-*/safety-report.json 2>/dev/null || echo "0")
            if [ "$vuln_count" -eq 0 ]; then
              echo "- ✅ **Dependency Scan**: No vulnerabilities found" >> security-summary.md
            else
              echo "- ⚠️ **Dependency Scan**: $vuln_count vulnerabilities found" >> security-summary.md
            fi
          else
            echo "- ❓ **Dependency Scan**: Results not available" >> security-summary.md
          fi

          # Docker scan results
          if [ -f trivy-reports-*/trivy-report.json ]; then
            echo "- ✅ **Docker Scan**: Completed" >> security-summary.md
          else
            echo "- ❓ **Docker Scan**: Results not available" >> security-summary.md
          fi

          # License check results
          if [ -f license-report-*/licenses.json ]; then
            echo "- ✅ **License Check**: Completed" >> security-summary.md
          else
            echo "- ❓ **License Check**: Results not available" >> security-summary.md
          fi

          # Code quality results
          if [ -f code-quality-reports-*/complexity-report.json ]; then
            echo "- ✅ **Code Quality**: Analyzed" >> security-summary.md
          else
            echo "- ❓ **Code Quality**: Results not available" >> security-summary.md
          fi

          echo "" >> security-summary.md
          echo "## 🔗 Detailed Reports" >> security-summary.md
          echo "" >> security-summary.md
          echo "Detailed reports are available in the workflow artifacts." >> security-summary.md

          cat security-summary.md

      - name: Upload security summary
        uses: actions/upload-artifact@v3
        with:
          name: security-summary-${{ github.run_number }}
          path: security-summary.md