name: C/C++ CI

permissions:
  contents: read

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]
      - name: Install dependencies
        run: |
          set -e
          SUDO=""
          if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
          if command -v apt-get >/dev/null 2>&1; then
            $SUDO apt-get update -o Acquire::ForceIPv4=true || true
            $SUDO apt-get install -y \
              build-essential \
              libssl-dev \
              libmagic-dev \
              libnghttp2-dev \
              pkg-config \
              file \
              cppcheck \
              clang-format \
              clang-tidy \
              flawfinder || true
          elif command -v apk >/dev/null 2>&1; then
            $SUDO apk update || true
            $SUDO apk add --no-cache \
              build-base \
              openssl-dev \
              file-dev \
              nghttp2-dev \
              zlib-dev \
              pkgconf \
              file \
              cppcheck \
              clang-extra-tools || true
          elif command -v dnf >/dev/null 2>&1; then
            $SUDO dnf -y install \
              gcc gcc-c++ make \
              openssl-devel \
              file-devel \
              libnghttp2-devel \
              pkgconf-pkg-config \
              file \
              cppcheck \
              clang-tools-extra \
              flawfinder || true
          else
            echo "No supported package manager found; skipping install"
          fi

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      C_INCLUDE_PATH: /usr/include:/usr/local/include
      LIBRARY_PATH: /usr/lib:/usr/local/lib:/usr/lib/x86_64-linux-gnu
      LD_LIBRARY_PATH: /usr/lib:/usr/local/lib:/usr/lib/x86_64-linux-gnu

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

      - name: Verify build environment
        run: |
          echo "Checking for required build tools..."
          which gcc || echo "WARNING: gcc not found"
      - name: Ensure test dependencies
        run: |
          set -e
          SUDO=""
          if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
          if command -v apt-get >/dev/null 2>&1; then
            $SUDO apt-get update -o Acquire::ForceIPv4=true || true
            $SUDO apt-get install -y \
              build-essential \
              libssl-dev \
              libmagic-dev \
              libnghttp2-dev \
              pkg-config \
              file || true
          elif command -v apk >/dev/null 2>&1; then
            $SUDO apk update || true
            $SUDO apk add --no-cache \
              build-base \
              openssl-dev \
              file-dev \
              nghttp2-dev \
              zlib-dev \
              pkgconf \
              file || true
          fi
          which make || echo "WARNING: make not found"
          echo "Include path: $C_INCLUDE_PATH"
          echo "Looking for magic.h..."
          ls -la /usr/include/magic.h || echo "magic.h not in /usr/include"
          gcc -E -x c - -v < /dev/null 2>&1 | grep "include"

      - name: Build project
        run: |
          make clean || true
          make INCLUDES="-I/usr/include -I/usr/local/include"

      - name: Upload build artifact
        uses: actions/upload-artifact@v4
        with:
          name: server-binary
          path: server

  test:
    runs-on: ubuntu-latest
    needs: build
    env:
      C_INCLUDE_PATH: /usr/include:/usr/local/include
      LIBRARY_PATH: /usr/lib:/usr/local/lib:/usr/lib/x86_64-linux-gnu
      LD_LIBRARY_PATH: /usr/lib:/usr/local/lib:/usr/lib/x86_64-linux-gnu

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

      - name: Build for testing
        run: |
          make clean || true
          make INCLUDES="-I/usr/include -I/usr/local/include"

      - name: Verify ELF executable
        run: |
          if file server | grep -q "ELF"; then
            echo "✓ Server binary is a valid ELF executable"
          else
            echo "✗ Invalid server binary!"
            exit 1
          fi

      - name: Run basic tests
        run: |
          echo "✓ (No unit tests configured yet, smoke test passed)"

  code-quality:
    runs-on: ubuntu-latest

    steps:
      - name: Install code quality tools
        run: |
          set -e
          SUDO=""
          if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
          if command -v apt-get >/dev/null 2>&1; then
            $SUDO apt-get update -o Acquire::ForceIPv4=true || true
            $SUDO apt-get install -y cppcheck clang-format || true
          elif command -v apk >/dev/null 2>&1; then
            $SUDO apk update || true
            $SUDO apk add --no-cache cppcheck clang-extra-tools || true
          fi

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Run Cppcheck
        run: |
          cppcheck --enable=all --inconclusive --error-exitcode=0 \
            --suppress=missingIncludeSystem \
            src/ 2>&1 | tee cppcheck-report.txt

      - name: Check formatting
        run: |
          mismatches=0
          for file in $(find src/ -name "*.c" -o -name "*.h"); do
            if clang-format -style=file -output-replacements-xml "$file" | grep -q "<replacement "; then
              echo "Formatting issue: $file"
              mismatches=1
            fi
          done
          exit $mismatches

      - name: Upload reports
        uses: actions/upload-artifact@v4
        if: always()
        with:
          name: code-quality-reports
          path: cppcheck-report.txt

  security-scan:
    runs-on: ubuntu-latest

    steps:
      - name: Install security tools
        run: |
          set -e
          SUDO=""
          if [ "$(id -u)" -ne 0 ]; then SUDO="sudo"; fi
          if command -v apt-get >/dev/null 2>&1; then
            $SUDO apt-get update -o Acquire::ForceIPv4=true || true
            $SUDO apt-get install -y flawfinder cppcheck || true
          elif command -v apk >/dev/null 2>&1; then
            $SUDO apk update || true
            # flawfinder may not be available on Alpine repos; install cppcheck
            $SUDO apk add --no-cache cppcheck || true
          fi

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Run Flawfinder
        run: |
          flawfinder --minlevel=1 src/ | tee flawfinder.txt || true

      - name: Run Cppcheck (security-focused)
        run: |
          cppcheck --enable=warning,style,performance,portability \
            --error-exitcode=0 src/ 2>&1 | tee cppcheck-security.txt

      - name: Upload security reports
        uses: actions/upload-artifact@v4
        if: always()
        with:
          name: security-scan-reports
          path: |
            flawfinder.txt
            cppcheck-security.txt