################################################################################
# Copyright (C) 2018-2021 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH  #
#                                                                              #
#              This software is distributed under the terms of the             #
#              GNU Lesser General Public Licence (LGPL) version 3,             #
#                  copied verbatim in the file "LICENSE"                       #
################################################################################

include_guard(GLOBAL)

include(FairCMakeModules)
include(FairFindPackage2)
include(FairMQBundlePackageHelper)

function(generate_package_components)
  list(JOIN PROJECT_PACKAGE_COMPONENTS} " " COMPS)
  set(PACKAGE_COMPONENTS "\
####### Expanded from @PACKAGE_COMPONENTS@ by configure_package_config_file() #########

set(${PROJECT_NAME}_PACKAGE_COMPONENTS ${COMPS})

")
  foreach(comp IN LISTS PROJECT_PACKAGE_COMPONENTS)
    string(CONCAT PACKAGE_COMPONENTS ${PACKAGE_COMPONENTS} "\
set(${PROJECT_NAME}_${comp}_FOUND TRUE)
")
  endforeach()
  string(CONCAT PACKAGE_COMPONENTS ${PACKAGE_COMPONENTS} "\

check_required_components(${PROJECT_NAME})
")
set(PACKAGE_COMPONENTS ${PACKAGE_COMPONENTS} PARENT_SCOPE)
endfunction()

# Configure/Install CMake package
macro(install_cmake_package)
  list(SORT PROJECT_PACKAGE_DEPENDENCIES)
  list(SORT PROJECT_INTERFACE_PACKAGE_DEPENDENCIES)
  include(CMakePackageConfigHelpers)
  set(PACKAGE_INSTALL_DESTINATION
    ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}-${PROJECT_VERSION}
  )
  if(BUILD_FAIRMQ)
    install(EXPORT ${PROJECT_EXPORT_SET}
      NAMESPACE ${PROJECT_NAME}::
      DESTINATION ${PACKAGE_INSTALL_DESTINATION}
      EXPORT_LINK_INTERFACE_LIBRARIES
    )
  endif()
  write_basic_package_version_file(
    ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
    VERSION ${PROJECT_VERSION}
    COMPATIBILITY AnyNewerVersion
  )
  fair_generate_package_dependencies() # fills ${PACKAGE_DEPENDENCIES}
  generate_package_components() # fills ${PACKAGE_COMPONENTS}
  string(TOUPPER ${CMAKE_BUILD_TYPE} PROJECT_BUILD_TYPE_UPPER)
  set(PROJECT_CXX_FLAGS ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${PROJECT_BUILD_TYPE_UPPER}})
  configure_package_config_file(
    ${CMAKE_SOURCE_DIR}/cmake/${PROJECT_NAME}Config.cmake.in
    ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
    INSTALL_DESTINATION ${PACKAGE_INSTALL_DESTINATION}
    PATH_VARS CMAKE_INSTALL_PREFIX
  )
  install(FILES
    ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
    ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
    DESTINATION ${PACKAGE_INSTALL_DESTINATION}
  )
endmacro()