###########################################################################
#
#  Library:   CTK
#
#  Copyright (c) Kitware Inc.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.commontk.org/LICENSE
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
###########################################################################

#
# Depends on:
#  CTK/CMake/ctkMacroParseArguments.cmake
#

MACRO(ctkMacroBuildLib)
  ctkMacroParseArguments(MY
    "NAME;EXPORT_DIRECTIVE;SRCS;MOC_SRCS;UI_FORMS;INCLUDE_DIRECTORIES;TARGET_LIBRARIES;RESOURCES;LIBRARY_TYPE"
    "DISABLE_WRAP_PYTHONQT"
    ${ARGN}
    )

  # Sanity checks
  IF(NOT DEFINED MY_NAME)
    MESSAGE(SEND_ERROR "NAME is mandatory")
  ENDIF()
  STRING(REGEX MATCH "^CTK.+" valid_library_name ${MY_NAME})
  IF(NOT valid_library_name)
    MESSAGE(SEND_ERROR "CTK library name [${MY_NAME}] should start with 'CTK' uppercase !")
  ENDIF()
  IF(NOT DEFINED MY_EXPORT_DIRECTIVE)
    MESSAGE(SEND_ERROR "EXPORT_DIRECTIVE is mandatory")
  ENDIF()
  IF(NOT DEFINED MY_LIBRARY_TYPE)
    SET(MY_LIBRARY_TYPE "SHARED")
  ENDIF()

  # Define library name
  SET(lib_name ${MY_NAME})

  # --------------------------------------------------------------------------
  # Include dirs
  SET(my_includes
    ${CMAKE_CURRENT_SOURCE_DIR}
    ${CMAKE_CURRENT_BINARY_DIR}
    # with CMake >2.9, use QT4_MAKE_OUTPUT_FILE instead ?
    ${CMAKE_CURRENT_BINARY_DIR}/Resources/UI
    ${MY_INCLUDE_DIRECTORIES}
    )  

  # Add the include directories from the library dependencies
  ctkFunctionGetIncludeDirs(my_includes ${lib_name})

  INCLUDE_DIRECTORIES(
    ${my_includes}
    )
    
  # Add the library directories from the external project
  ctkFunctionGetLibraryDirs(my_library_dirs ${lib_name})
  
  LINK_DIRECTORIES(
    ${my_library_dirs}
    )


  SET(MY_LIBRARY_EXPORT_DIRECTIVE ${MY_EXPORT_DIRECTIVE})
  SET(MY_EXPORT_HEADER_PREFIX ${MY_NAME})
  STRING(REGEX REPLACE "^CTK" "ctk" MY_EXPORT_HEADER_PREFIX ${MY_EXPORT_HEADER_PREFIX})
  SET(MY_LIBNAME ${lib_name})
  
  CONFIGURE_FILE(
    ${CTK_SOURCE_DIR}/Libs/ctkExport.h.in
    ${CMAKE_CURRENT_BINARY_DIR}/${MY_EXPORT_HEADER_PREFIX}Export.h
    )
  SET(dynamicHeaders
    "${dynamicHeaders};${CMAKE_CURRENT_BINARY_DIR}/${MY_EXPORT_HEADER_PREFIX}Export.h")

  # Make sure variable are cleared
  SET(MY_MOC_CPP)
  SET(MY_UI_CPP)
  SET(MY_QRC_SRCS)

  # Wrap
  QT4_WRAP_CPP(MY_MOC_CPP ${MY_MOC_SRCS})
  QT4_WRAP_UI(MY_UI_CPP ${MY_UI_FORMS})
  IF(DEFINED MY_RESOURCES)
    QT4_ADD_RESOURCES(MY_QRC_SRCS ${MY_RESOURCES})
  ENDIF()

  SOURCE_GROUP("Resources" FILES
    ${MY_RESOURCES}
    ${MY_UI_FORMS}
    )

  SOURCE_GROUP("Generated" FILES
    ${MY_QRC_SRCS}
    ${MY_MOC_CPP}
    ${MY_UI_CPP}
    )

  # Since the PythonQt decorator depends on PythonQt, Python and VTK, let's link against
  # these ones to avoid complaints of MSVC
  # Note: "LINK_DIRECTORIES" has to be invoked before "ADD_LIBRARY"
  SET(my_EXTRA_PYTHON_LIBRARIES)
  IF(CTK_WRAP_PYTHONQT_LIGHT AND NOT ${MY_DISABLE_WRAP_PYTHONQT})
    # Does a header having the expected filename exists ?
    STRING(REGEX REPLACE "^CTK" "ctk" lib_name_lc_ctk ${lib_name})
    SET(decorator_header_filename ${lib_name_lc_ctk}PythonQtDecorators.h)
    IF(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${decorator_header_filename})
      LIST(APPEND my_EXTRA_PYTHON_LIBRARIES ${PYTHON_LIBRARY} ${PYTHONQT_LIBRARIES})
      # Should we link against VTK
      IF(CTK_LIB_Scripting/Python/Core_PYTHONQT_USE_VTK)
        LIST(APPEND my_EXTRA_PYTHON_LIBRARIES vtkCommon vtkPythonCore)
      ENDIF()
    ENDIF()
  ENDIF()

  # The current library might not be wrapped. Nevertheless, if one of its dependent library
  # is linked using vtkCommon or vtkPythonCore, VTK_LIBRARY_DIRS should be added
  # as a link directories.
  IF(CTK_WRAP_PYTHONQT_LIGHT AND CTK_LIB_Scripting/Python/Core_PYTHONQT_USE_VTK)
    LINK_DIRECTORIES(${VTK_LIBRARY_DIRS})
  ENDIF()
  
  ADD_LIBRARY(${lib_name} ${MY_LIBRARY_TYPE}
    ${MY_SRCS}
    ${MY_MOC_CPP}
    ${MY_UI_CPP}
    ${MY_QRC_SRCS}
    )

  # Set labels associated with the target.
  SET_TARGET_PROPERTIES(${lib_name} PROPERTIES LABELS ${lib_name})

  # Apply user-defined properties to the library target.
  IF(CTK_LIBRARY_PROPERTIES AND MY_LIBRARY_TYPE STREQUAL "SHARED")
    SET_TARGET_PROPERTIES(${lib_name} PROPERTIES ${CTK_LIBRARY_PROPERTIES})
  ENDIF()
  SET_TARGET_PROPERTIES(${lib_name} PROPERTIES CTK_LIB_TARGET_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})

  # Install rules
  IF(CTK_BUILD_SHARED_LIBS)
    INSTALL(TARGETS ${lib_name}
      RUNTIME DESTINATION ${CTK_INSTALL_BIN_DIR} COMPONENT Runtime
      LIBRARY DESTINATION ${CTK_INSTALL_LIB_DIR} COMPONENT Runtime
      ARCHIVE DESTINATION ${CTK_INSTALL_LIB_DIR} COMPONENT Development)
  ENDIF()
  
  SET(my_libs
    ${MY_TARGET_LIBRARIES}
    )

  IF(MINGW)
    LIST(APPEND my_libs ssp) # add stack smash protection lib
  ENDIF(MINGW)

  # See above for definition of my_EXTRA_PYTHON_LIBRARIES
  TARGET_LINK_LIBRARIES(${lib_name} ${my_libs} ${my_EXTRA_PYTHON_LIBRARIES})

  # Update CTK_BASE_LIBRARIES
  SET(CTK_BASE_LIBRARIES ${my_libs} ${lib_name} CACHE INTERNAL "CTK base libraries" FORCE)
  SET(CTK_LIBRARIES ${CTK_LIBRARIES} ${lib_name} CACHE INTERNAL "CTK libraries" FORCE)
  SET(CTK_BASE_INCLUDE_DIRS ${CTK_BASE_INCLUDE_DIRS} ${my_includes} CACHE INTERNAL "CTK includes" FORCE)
  
  # Install headers
  FILE(GLOB headers "${CMAKE_CURRENT_SOURCE_DIR}/*.h")
  INSTALL(FILES
    ${headers}
    ${dynamicHeaders}
    DESTINATION ${CTK_INSTALL_INCLUDE_DIR} COMPONENT Development
    )

  IF((CTK_WRAP_PYTHONQT_LIGHT OR CTK_WRAP_PYTHONQT_FULL) AND NOT ${MY_DISABLE_WRAP_PYTHONQT})
    set(KIT_PYTHONQT_SRCS) # Clear variable
    ctkMacroWrapPythonQt("org.commontk" ${lib_name}
      KIT_PYTHONQT_SRCS "${MY_SRCS}" ${CTK_WRAP_PYTHONQT_FULL})
    ADD_LIBRARY(${lib_name}PythonQt STATIC ${KIT_PYTHONQT_SRCS})
    TARGET_LINK_LIBRARIES(${lib_name}PythonQt ${lib_name})
    IF(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
      SET_TARGET_PROPERTIES(${lib_name}PythonQt PROPERTIES COMPILE_FLAGS "-fPIC")
    ENDIF()
    # Set labels associated with the target.
    SET_TARGET_PROPERTIES(${lib_name}PythonQt PROPERTIES LABELS ${lib_name})

    # Update list of libraries wrapped with PythonQt
    SET(CTK_WRAPPED_LIBRARIES_PYTHONQT
      ${CTK_WRAPPED_LIBRARIES_PYTHONQT} ${lib_name}
      CACHE INTERNAL "CTK libraries wrapped using PythonQt" FORCE)
  ENDIF()

ENDMACRO()