name: CI Pipeline

permissions:
  contents: read

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]

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
    steps:
      - name: Install build 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
      - uses: actions/checkout@v4
      - name: Build project
        run: make clean && make INCLUDES="-I/usr/include -I/usr/local/include" || make INCLUDES="-I/usr/include -I/usr/local/include"
      - name: Upload build artifacts
        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
    steps:
      - 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
      - uses: actions/checkout@v4
      - name: Build and run tests
        run: |
          make clean && make INCLUDES="-I/usr/include -I/usr/local/include"
          # Verify the binary was created
          test -f server && echo "✓ Server binary built successfully"
          # Basic smoke tests - verify it's a valid ELF executable
          file server | grep -q "ELF.*executable" && echo "✓ Server executable is valid"
          echo "✓ All tests passed"

  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
            $SUDO apk add --no-cache cppcheck || true
          fi
      - uses: actions/checkout@v4
      - name: Run Flawfinder
        run: |
          flawfinder --minlevel=1 --html --context src/ > flawfinder-report.html || true
          flawfinder --minlevel=1 src/ || true
      - name: Run Cppcheck security analysis
        run: |
          cppcheck --enable=warning,style,performance,portability --error-exitcode=0 \
            --suppress=missingIncludeSystem src/ 2>&1 | tee cppcheck-security.txt

  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 clang-tidy || true
          elif command -v apk >/dev/null 2>&1; then
            $SUDO apk update || true
            $SUDO apk add --no-cache cppcheck clang-extra-tools || true
          fi
      - uses: actions/checkout@v4
      - name: Run Cppcheck
        run: |
          cppcheck --enable=all --inconclusive --error-exitcode=0 \
            --suppress=missingIncludeSystem \
            --suppress=unusedFunction \
            src/ 2>&1 | tee cppcheck-report.txt
      - name: Check code formatting
        run: |
          find src/ -name "*.c" -o -name "*.h" | while read file; do
            clang-format -style=file -output-replacements-xml "$file" | grep -q "<replacement " && echo "Format issues in $file" || true
          done
      - name: Upload code quality reports
        uses: actions/upload-artifact@v4
        if: always()
        with:
          name: code-quality-reports
          path: |
            cppcheck-report.txt

  docker-build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Build Docker image
        run: |
          docker build -t carbon-server:test .
      - name: Test Docker container startup
        run: |
          # Start container in background
          docker run -d --name carbon-test -p 8080:8080 carbon-server:test
          # Wait for server to start
          sleep 5
          # Check if container is running
          docker ps | grep carbon-test
          # Test HTTP endpoint
          curl -f http://localhost:8080/ || exit 1
          # Check logs for errors
          docker logs carbon-test
          # Stop container
          docker stop carbon-test
          docker rm carbon-test
          echo "✓ Docker container started and responded successfully"