#!/bin/bash
set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BUILD_DIR="${SCRIPT_DIR}/build"

REBUILD=false
FAKE=false
for arg in "$@"; do
  case "$arg" in
    --rebuild) REBUILD=true ;;
    --fake)    FAKE=true ;;
  esac
done

CMAKE_ARGS=""
if [ "${FAKE}" = true ]; then
  CMAKE_ARGS="-DFAKE=ON"
fi

if [ "${REBUILD}" = true ]; then
  echo "==> Clean build directory"
  rm -rf "${BUILD_DIR}"
  mkdir -p "${BUILD_DIR}"
  echo "==> Configure"
  cmake -S "${SCRIPT_DIR}" -B "${BUILD_DIR}" ${CMAKE_ARGS}
fi

mkdir -p "${BUILD_DIR}"

if [ -f "${BUILD_DIR}/CMakeCache.txt" ]; then
  CACHED_FAKE=$(grep -o "FAKE:BOOL=.\+" "${BUILD_DIR}/CMakeCache.txt" 2>/dev/null || echo "")
  if [ "${FAKE}" = true ] && [ "${CACHED_FAKE}" != "FAKE:BOOL=ON" ]; then
    echo "==> FAKE flag changed, cleaning build"
    rm -rf "${BUILD_DIR}"
    mkdir -p "${BUILD_DIR}"
  elif [ "${FAKE}" = false ] && [ "${CACHED_FAKE}" = "FAKE:BOOL=ON" ]; then
    echo "==> FAKE flag changed, cleaning build"
    rm -rf "${BUILD_DIR}"
    mkdir -p "${BUILD_DIR}"
  fi
fi

if [ ! -f "${BUILD_DIR}/CMakeCache.txt" ]; then
  echo "==> Configure"
  cmake -S "${SCRIPT_DIR}" -B "${BUILD_DIR}" ${CMAKE_ARGS}
fi

echo "==> Build"
cmake --build "${BUILD_DIR}" -j$(nproc)

echo "==> Run tests"
rm -rf /tmp/pipeline-runner-test/
"${BUILD_DIR}/test-pipeline-runner" \
  --gtest_brief=1 \
  --gtest_output=xml:"${BUILD_DIR}/test-results.xml"

echo "==> Done"