include(CMakeParseArguments)

set(CUR_DIR ${CMAKE_CURRENT_LIST_DIR})

if(MSVC OR MSYS OR MINGW)
  set(OS_WIN TRUE)
elseif(APPLE)
  set(OS_MAC TRUE)
elseif(UNIX)
  set(OS_LINUX TRUE)
else()
  message(FATAL_ERROR "Unsupported OS.")
endif()

# set_outdir(ARCHIVE_OUTPUT_DIRECTORY
#            LIBRARY_OUTPUT_DIRECTORY
#            RUNTIME_OUTPUT_DIRECTORY)
macro(set_outdir ARCHIVE_OUTPUT_DIRECTORY LIBRARY_OUTPUT_DIRECTORY RUNTIME_OUTPUT_DIRECTORY)
  set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${ARCHIVE_OUTPUT_DIRECTORY})
  set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBRARY_OUTPUT_DIRECTORY})
  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${RUNTIME_OUTPUT_DIRECTORY})
  foreach(CONFIG ${CMAKE_CONFIGURATION_TYPES})
    string(TOUPPER ${CONFIG} CONFIG)
    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${CONFIG} ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY})
    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONFIG} ${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_${CONFIG} ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
  endforeach()
endmacro()

macro(exe2bat exe_name exe_dir dll_search_paths)
  message(STATUS "Generating ${exe_name}.bat")
  set(__exe_name ${exe_name})
  set(__dll_relative_search_paths "")
  foreach(path ${dll_search_paths})
    file(RELATIVE_PATH __relative_path "${exe_dir}" "${path}")
    file(TO_NATIVE_PATH ${__relative_path} __relative_path)
    list(APPEND __dll_relative_search_paths ${__relative_path})
  endforeach()
  #message(STATUS __dll_relative_search_paths: "${__dll_relative_search_paths}")
  set(__dll_search_paths "${__dll_relative_search_paths}")
  configure_file(
    "${CUR_DIR}/templates/exe.bat.in"
    "${exe_dir}/${__exe_name}.bat"
  )
endmacro()

# target_create_scripts(NAME
#                       [BIN_DIR bin_dir]
#                       [DLL_SEARCH_PATHS path1 path2 ...])
macro(target_create_scripts NAME)
  set(options BIN_DIR)
  set(oneValueArgs)
  set(multiValueArgs DLL_SEARCH_PATHS)
  cmake_parse_arguments(THIS "${options}" "${oneValueArgs}"
                        "${multiValueArgs}" ${ARGN})
  if(NOT THIS_BIN_DIR)
    set(THIS_BIN_DIR ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
  endif()

  #message(STATUS "NAME: ${NAME}")
  #message(STATUS "THIS_BIN_DIR: ${THIS_BIN_DIR}")
  #message(STATUS "THIS_DLL_SEARCH_PATHS: ${THIS_DLL_SEARCH_PATHS}")

  if(OS_WIN)
    exe2bat("${NAME}" "${THIS_BIN_DIR}" "${THIS_DLL_SEARCH_PATHS}")
  endif()
endmacro()