name: License Audit

on:
  pull_request:
    paths:
      - '**/*.csproj'
      - '**/package.json'
      - '**/package-lock.json'
      - 'Directory.Build.props'
      - 'Directory.Packages.props'
      - 'NOTICE.md'
      - 'third-party-licenses/**'
      - 'docs/legal/**'
      - '.gitea/workflows/license-audit.yml'
      - '.gitea/scripts/validate/validate-licenses.sh'
  push:
    branches: [ main ]
    paths:
      - '**/*.csproj'
      - '**/package.json'
      - '**/package-lock.json'
      - 'Directory.Build.props'
      - 'Directory.Packages.props'
  schedule:
    # Weekly audit every Sunday at 00:00 UTC
    - cron: '0 0 * * 0'
  workflow_dispatch:
    inputs:
      full_scan:
        description: 'Run full transitive dependency scan'
        required: false
        default: 'false'
        type: boolean

jobs:
  nuget-license-audit:
    name: NuGet License Audit
    runs-on: ubuntu-22.04
    env:
      DOTNET_NOLOGO: 1
      DOTNET_CLI_TELEMETRY_OPTOUT: 1
      TZ: UTC
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Setup .NET 10
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: 10.0.100
          include-prerelease: true

      - name: Cache NuGet packages
        uses: actions/cache@v4
        with:
          path: |
            ~/.nuget/packages
            .nuget/packages
          key: license-audit-nuget-${{ runner.os }}-${{ hashFiles('**/*.csproj') }}

      - name: Install dotnet-delice
        run: dotnet tool install --global dotnet-delice || true

      - name: Extract NuGet licenses
        run: |
          mkdir -p out/license-audit

          # List packages from key projects
          for proj in \
            src/Scanner/StellaOps.Scanner.WebService/StellaOps.Scanner.WebService.csproj \
            src/Cli/StellaOps.Cli/StellaOps.Cli.csproj \
            src/Authority/StellaOps.Authority/StellaOps.Authority.WebService/StellaOps.Authority.WebService.csproj \
            src/Concelier/StellaOps.Concelier.WebService/StellaOps.Concelier.WebService.csproj
          do
            if [ -f "$proj" ]; then
              name=$(basename $(dirname "$proj"))
              echo "Scanning: $proj"
              dotnet list "$proj" package --include-transitive 2>/dev/null | tee -a out/license-audit/nuget-packages.txt || true
            fi
          done

      - name: Validate against allowlist
        run: |
          bash .gitea/scripts/validate/validate-licenses.sh nuget out/license-audit/nuget-packages.txt

      - name: Upload NuGet license report
        uses: actions/upload-artifact@v4
        with:
          name: nuget-license-report
          path: out/license-audit
          retention-days: 30

  npm-license-audit:
    name: npm License Audit
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
          cache-dependency-path: src/Web/StellaOps.Web/package-lock.json

      - name: Install license-checker
        run: npm install -g license-checker

      - name: Audit Angular frontend
        run: |
          mkdir -p out/license-audit
          cd src/Web/StellaOps.Web
          npm ci --prefer-offline --no-audit --no-fund 2>/dev/null || npm install
          license-checker --json --production > ../../../out/license-audit/npm-angular-licenses.json
          license-checker --csv --production > ../../../out/license-audit/npm-angular-licenses.csv
          license-checker --summary --production > ../../../out/license-audit/npm-angular-summary.txt

      - name: Audit DevPortal
        run: |
          cd src/DevPortal/StellaOps.DevPortal.Site
          if [ -f package-lock.json ]; then
            npm ci --prefer-offline --no-audit --no-fund 2>/dev/null || npm install
            license-checker --json --production > ../../../out/license-audit/npm-devportal-licenses.json || true
          fi
        continue-on-error: true

      - name: Validate against allowlist
        run: |
          bash .gitea/scripts/validate/validate-licenses.sh npm out/license-audit/npm-angular-licenses.json

      - name: Upload npm license report
        uses: actions/upload-artifact@v4
        with:
          name: npm-license-report
          path: out/license-audit
          retention-days: 30

  vendored-license-check:
    name: Vendored Components Check
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Verify vendored license files exist
        run: |
          echo "Checking vendored license files..."

          # Required license files
          required_files=(
            "third-party-licenses/tree-sitter-MIT.txt"
            "third-party-licenses/tree-sitter-ruby-MIT.txt"
            "third-party-licenses/AlexMAS.GostCryptography-MIT.txt"
          )

          missing=0
          for file in "${required_files[@]}"; do
            if [ ! -f "$file" ]; then
              echo "ERROR: Missing required license file: $file"
              missing=$((missing + 1))
            else
              echo "OK: $file"
            fi
          done

          if [ $missing -gt 0 ]; then
            echo "ERROR: $missing required license file(s) missing"
            exit 1
          fi

          echo "All vendored license files present."

      - name: Verify NOTICE.md is up to date
        run: |
          echo "Checking NOTICE.md references..."

          # Check that vendored components are mentioned in NOTICE.md
          for component in "tree-sitter" "AlexMAS.GostCryptography" "CryptoPro"; do
            if ! grep -q "$component" NOTICE.md; then
              echo "WARNING: $component not mentioned in NOTICE.md"
            else
              echo "OK: $component referenced in NOTICE.md"
            fi
          done

      - name: Verify vendored source has LICENSE
        run: |
          echo "Checking vendored source directories..."

          # GostCryptography fork must have LICENSE file
          gost_dir="src/__Libraries/StellaOps.Cryptography.Plugin.CryptoPro/third_party/AlexMAS.GostCryptography"
          if [ -d "$gost_dir" ]; then
            if [ ! -f "$gost_dir/LICENSE" ]; then
              echo "ERROR: $gost_dir is missing LICENSE file"
              exit 1
            else
              echo "OK: $gost_dir/LICENSE exists"
            fi
          fi

  license-compatibility-check:
    name: License Compatibility Check
    runs-on: ubuntu-22.04
    needs: [nuget-license-audit, npm-license-audit]
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Download NuGet report
        uses: actions/download-artifact@v4
        with:
          name: nuget-license-report
          path: out/nuget

      - name: Download npm report
        uses: actions/download-artifact@v4
        with:
          name: npm-license-report
          path: out/npm

      - name: Check for incompatible licenses
        run: |
          echo "Checking for AGPL-3.0-or-later incompatible licenses..."

          # Known incompatible licenses (SPDX identifiers)
          incompatible=(
            "GPL-2.0-only"
            "SSPL-1.0"
            "BUSL-1.1"
            "Commons-Clause"
            "Proprietary"
          )

          found_issues=0

          # Check npm report
          if [ -f out/npm/npm-angular-licenses.json ]; then
            for license in "${incompatible[@]}"; do
              if grep -qi "\"$license\"" out/npm/npm-angular-licenses.json; then
                echo "ERROR: Incompatible license found in npm dependencies: $license"
                found_issues=$((found_issues + 1))
              fi
            done
          fi

          if [ $found_issues -gt 0 ]; then
            echo "ERROR: Found $found_issues incompatible license(s)"
            exit 1
          fi

          echo "All licenses compatible with AGPL-3.0-or-later"

      - name: Generate combined report
        run: |
          mkdir -p out/combined
          cat > out/combined/license-audit-summary.md << 'EOF'
          # License Audit Summary

          Generated: $(date -u +%Y-%m-%dT%H:%M:%SZ)
          Commit: ${{ github.sha }}

          ## Status: PASSED

          All dependencies use licenses compatible with AGPL-3.0-or-later.

          ## Allowed Licenses
          - MIT
          - Apache-2.0
          - BSD-2-Clause
          - BSD-3-Clause
          - ISC
          - 0BSD
          - PostgreSQL
          - MPL-2.0
          - CC0-1.0
          - Unlicense

          ## Reports
          - NuGet: See nuget-license-report artifact
          - npm: See npm-license-report artifact

          ## Documentation
          - Full dependency list: docs/legal/THIRD-PARTY-DEPENDENCIES.md
          - Compatibility analysis: docs/legal/LICENSE-COMPATIBILITY.md
          EOF

      - name: Upload combined report
        uses: actions/upload-artifact@v4
        with:
          name: license-audit-summary
          path: out/combined
          retention-days: 90