#===============================================================================
# @file   CMakeLists.txt
#
# @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
# @author Nicolas Richart <nicolas.richart@epfl.ch>
#
# @date creation: Mon Jun 14 2010
# @date last modification: Tue Feb 13 2018
#
# @brief  CMake file for the library
#
# @section LICENSE
#
# Copyright (©) 2010-2018 EPFL (Ecole Polytechnique Fédérale de Lausanne)
# Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
#
# Akantu is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Akantu. If not, see <http://www.gnu.org/licenses/>.
#
#===============================================================================

#===============================================================================
# Package Management
#===============================================================================
package_get_all_source_files(
  AKANTU_LIBRARY_SRCS
  AKANTU_LIBRARY_PUBLIC_HDRS
  AKANTU_LIBRARY_PRIVATE_HDRS
  )

package_get_all_include_directories(
  AKANTU_LIBRARY_INCLUDE_DIRS
  )

package_get_all_external_informations(
  PRIVATE_INCLUDE AKANTU_PRIVATE_EXTERNAL_INCLUDE_DIR
  INTERFACE_INCLUDE AKANTU_INTERFACE_EXTERNAL_INCLUDE_DIR
  LIBRARIES AKANTU_EXTERNAL_LIBRARIES
  )

package_get_all_compilation_flags(CXX _cxx_flags)
set(AKANTU_EXTRA_CXX_FLAGS
  "${_cxx_flags}" CACHE STRING "Extra flags defined by loaded packages" FORCE)
mark_as_advanced(AKANTU_EXTRA_CXX_FLAGS)

foreach(src_ ${AKANTU_SPIRIT_SOURCES})
  set_property(SOURCE ${src_} PROPERTY COMPILE_FLAGS "-g0 -Werror")
endforeach()

#===========================================================================
# header for blas/lapack (any other fortran libraries)
#===========================================================================
package_is_activated(BLAS _blas_activated)
package_is_activated(LAPACK _lapack_activated)

if(_blas_activated OR _lapack_activated)
  if(CMAKE_Fortran_COMPILER)
    # ugly hack
    set(CMAKE_Fortran_COMPILER_LOADED TRUE)
  endif()

  include(FortranCInterface)
  FortranCInterface_HEADER(
    "${CMAKE_CURRENT_BINARY_DIR}/aka_fortran_mangling.hh"
    MACRO_NAMESPACE "AKA_FC_")
  mark_as_advanced(CDEFS)
  list(APPEND AKANTU_LIBRARY_PUBLIC_HDRS
    "${CMAKE_CURRENT_BINARY_DIR}/aka_fortran_mangling.hh"
    )
endif()

list(APPEND AKANTU_LIBRARY_INCLUDE_DIRS "${CMAKE_CURRENT_BINARY_DIR}")
set(AKANTU_INCLUDE_DIRS
  ${CMAKE_CURRENT_BINARY_DIR} ${AKANTU_LIBRARY_INCLUDE_DIRS}
  CACHE INTERNAL "Internal include directories to link with Akantu as a subproject")

#===========================================================================
# configurations
#===========================================================================
package_get_all_material_includes(AKANTU_MATERIAL_INCLUDES)
package_get_all_material_lists(AKANTU_MATERIAL_LISTS)
configure_file(model/solid_mechanics/material_list.hh.in
  "${CMAKE_CURRENT_BINARY_DIR}/material_list.hh" @ONLY)

package_get_element_lists()
configure_file(common/aka_element_classes_info.hh.in
  "${CMAKE_CURRENT_BINARY_DIR}/aka_element_classes_info.hh" @ONLY)

configure_file(common/aka_config.hh.in
  "${CMAKE_CURRENT_BINARY_DIR}/aka_config.hh" @ONLY)

list(APPEND AKANTU_LIBRARY_PUBLIC_HDRS
  "${CMAKE_CURRENT_BINARY_DIR}/material_list.hh"
  "${CMAKE_CURRENT_BINARY_DIR}/aka_element_classes_info.hh"
  "${CMAKE_CURRENT_BINARY_DIR}/aka_config.hh")

#===============================================================================
# Debug infos
#===============================================================================
set(AKANTU_GDB_DIR ${PROJECT_SOURCE_DIR}/cmake)
if(UNIX AND NOT APPLE)
  string(TOUPPER "${CMAKE_BUILD_TYPE}" _u_build_type)
  if(_u_build_type STREQUAL "DEBUG" OR _u_build_type STREQUAL "RELWITHDEBINFO")
    configure_file(${PROJECT_SOURCE_DIR}/cmake/libakantu-gdb.py.in
      "${PROJECT_BINARY_DIR}/libakantu-gdb.py"
      @ONLY)
    configure_file(${PROJECT_SOURCE_DIR}/cmake/akantu-debug.cc.in
      "${PROJECT_BINARY_DIR}/akantu-debug.cc" @ONLY)

    list(APPEND AKANTU_LIBRARY_SRCS ${PROJECT_BINARY_DIR}/akantu-debug.cc)
  endif()
else()
  find_program(GDB_EXECUTABLE gdb)

  if(GDB_EXECUTABLE)
    execute_process(COMMAND
      ${GDB_EXECUTABLE} --batch -x "${PROJECT_SOURCE_DIR}/cmake/gdb_python_path"
      OUTPUT_VARIABLE AKANTU_PYTHON_GDB_DIR
      ERROR_QUIET
      RESULT_VARIABLE _res)

    if(_res EQUAL 0 AND UNIX)
      set(GDB_USER_CONFIG $ENV{HOME}/.gdb/auto-load)
      file(MAKE_DIRECTORY ${GDB_USER_CONFIG})

      configure_file(${PROJECT_SOURCE_DIR}/cmake/libakantu-gdb.py.in
        "${GDB_USER_CONFIG}/${CMAKE_SHARED_LIBRARY_PREFIX}akantu${CMAKE_SHARED_LIBRARY_SUFFIX}.${AKANTU_VERSION}-gdb.py"
        @ONLY)
    endif()
  endif()
endif()

#===============================================================================
# Library generation
#===============================================================================
add_library(akantu ${AKANTU_LIBRARY_SRCS})

target_include_directories(akantu
  PRIVATE   $<BUILD_INTERFACE:${AKANTU_INCLUDE_DIRS}>
  INTERFACE $<INSTALL_INTERFACE:include/akantu>
  )

# small trick for build includes in public
set_property(TARGET akantu APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES
  $<BUILD_INTERFACE:${AKANTU_INCLUDE_DIRS}>)

target_include_directories(akantu SYSTEM
  PUBLIC ${AKANTU_INTERFACE_EXTERNAL_INCLUDE_DIR}
  )

target_include_directories(akantu SYSTEM
  PRIVATE ${AKANTU_PRIVATE_EXTERNAL_INCLUDE_DIR}
  )

target_link_libraries(akantu PUBLIC ${AKANTU_EXTERNAL_LIBRARIES})

set_target_properties(akantu
  PROPERTIES
    ${AKANTU_LIBRARY_PROPERTIES} # this contains the version
    COMPILE_FLAGS "${_cxx_flags}"
    #PRIVATE_HEADER ${AKANTU_LIBRARY_PRIVATE_HDRS}
    )

if(AKANTU_LIBRARY_PUBLIC_HDRS)
  set_property(TARGET akantu PROPERTY PUBLIC_HEADER ${AKANTU_LIBRARY_PUBLIC_HDRS})
endif()

if(AKANTU_LIBRARY_PRIVATE_HDRS)
  set_property(TARGET akantu PROPERTY PRIVATE_HEADER ${AKANTU_LIBRARY_PRIVATE_HDRS})
endif()

if(NOT CMAKE_VERSION VERSION_LESS 3.1)
  package_get_all_features_public(_PUBLIC_features)
  package_get_all_features_private(_PRIVATE_features)
  foreach(_type PRIVATE PUBLIC)
    if(_${_type}_features)
      target_compile_features(akantu ${_type} ${_${_type}_features})
    endif()
  endforeach()
else()
  set_target_properties(akantu
    PROPERTIES
    CXX_STANDARD 14
    )
endif()

package_get_all_extra_dependencies(_extra_target_dependencies)
if(_extra_target_dependencies)
  # This only adding todo: find a solution for when a dependency was add the is removed...
  add_dependencies(akantu ${_extra_target_dependencies})
endif()

package_get_all_export_list(AKANTU_EXPORT_LIST)
list(APPEND AKANTU_EXPORT_LIST akantu)


# TODO separate public from private headers
include(GNUInstallDirs)
install(TARGETS akantu
  EXPORT ${AKANTU_TARGETS_EXPORT}
  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
          COMPONENT Akantu_runtime
  #         NAMELINK_ONLY
  # LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
  #         COMPONENT Akantu_development
  #         NAMELINK_SKIP Akantu_development
  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
          COMPONENT Akantu_runtime
  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
          COMPONENT Akantu_runtime
  PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/akantu/
          COMPONENT Akantu_development
  )

if("${AKANTU_TARGETS_EXPORT}" STREQUAL "AkantuTargets")
  install(EXPORT AkantuTargets
    DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/cmake/${PROJECT_NAME}
    COMPONENT dev)

  #Export for build tree
  export(EXPORT AkantuTargets
    FILE "${CMAKE_BINARY_DIR}/AkantuTargets.cmake")
  export(PACKAGE Akantu)
endif()

#===============================================================================
# Adding module names for debug
package_get_all_packages(_pkg_list)
foreach(_pkg ${_pkg_list})
  _package_get_real_name(${_pkg} _pkg_name)
  _package_get_source_files(${_pkg} _srcs _public_hdrs _private_hdrs)
  string(TOLOWER "${_pkg_name}" _l_package_name)
  set_property(SOURCE ${_srcs} ${_public_hdrs} ${_private_hdrs} 
    APPEND PROPERTY COMPILE_DEFINITIONS AKANTU_MODULE=${_l_package_name})
endforeach()

# print out the list of materials
generate_material_list()

register_target_to_tidy(akantu)