#!/usr/bin/env bash

SOURCE_DIR="$(pwd)"
BUILD_DIR="${SOURCE_DIR}/cppbuild/Release"
EXTRA_CMAKE_ARGS=""

ncpus=1
case "$(uname)" in
  Darwin* )
    ncpus=$(sysctl -n hw.ncpu)
    ;;
  Linux*)
    ncpus=$(lscpu -p | grep -c -E -v '^#')
    ;;
esac

while [[ $# -gt 0 ]]
do
  option="${1}"
  case ${option} in
    --c-warnings-as-errors)
      EXTRA_CMAKE_ARGS="${EXTRA_CMAKE_ARGS} -DC_WARNINGS_AS_ERRORS=ON"
      echo "Enabling warnings as errors for C"
      shift
      ;;
    --cxx-warnings-as-errors)
      EXTRA_CMAKE_ARGS="${EXTRA_CMAKE_ARGS} -DCXX_WARNINGS_AS_ERRORS=ON"
      echo "Enabling warnings as errors for C++"
      shift
      ;;
    -d|--debug-build)
      EXTRA_CMAKE_ARGS="${EXTRA_CMAKE_ARGS} -DCMAKE_BUILD_TYPE=Debug"
      export BUILD_DIR="${SOURCE_DIR}/cppbuild/Debug"
      export BUILD_CONFIG=Debug
      shift
      ;;
    --sanitise-build)
      EXTRA_CMAKE_ARGS="${EXTRA_CMAKE_ARGS} -DSANITISE_BUILD=ON"
      echo "Enabling sanitise build"
      shift
      ;;
    -h|--help)
      echo "${0} [--c-warnings-as-errors] [--cxx-warnings-as-errors] [--debug-build] [--sanitise-build]"
      exit
      ;;
    *)
      echo "Unknown option ${option}"
      echo "Use --help for help"
      exit
      ;;
  esac
done

echo "Will make with \"-j ${ncpus}\"."

if [ -d "${BUILD_DIR}" ] ; then
    echo "Build directory (${BUILD_DIR}) exists, removing."
    rm -rf "${BUILD_DIR}"
fi

mkdir -p "${BUILD_DIR}"
cd "${BUILD_DIR}" || exit

(cmake -G "Unix Makefiles" ${EXTRA_CMAKE_ARGS} "${SOURCE_DIR}" && make clean && make -j ${ncpus} all && ctest -C Release --output-on-failure)