# Matlab bindings for tigl
# @author Martin Siggel

option(TIGL_BINDINGS_MATLAB "Build the matlab bindings of tigl (requires matlab and python)" OFF)


if(TIGL_BINDINGS_MATLAB)

find_package(MATLAB QUIET)
find_package(PythonInterp REQUIRED)

message(STATUS "Found MATLAB. Create matlab bindings.")

#run python to create the tiglmatlab.c
add_custom_command(
	OUTPUT tiglmatlab.c
	DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/make_tigl_matlab.py ${PROJECT_SOURCE_DIR}/src/api/tigl.h
	WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
	COMMAND ${PYTHON_EXECUTABLE}
	ARGS ${CMAKE_CURRENT_SOURCE_DIR}/make_tigl_matlab.py
)

add_custom_target(tigl_mex_interface ALL
    COMMENT "Create MATLAB mex source for tigl" VERBATIM
    DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/tiglmatlab.c
)

configure_file(Makefile.in ${CMAKE_CURRENT_BINARY_DIR}/Makefile-matlab @ONLY)

install(
    CODE "file( GLOB MFILES ${CMAKE_CURRENT_BINARY_DIR}/*.m )"
    CODE "file( INSTALL \${MFILES} DESTINATION \${CMAKE_INSTALL_PREFIX}/share/tigl3/matlab )"
    COMPONENT interfaces
)

get_target_property(TIXI_INCLUDE_DIRS tixi3 INTERFACE_INCLUDE_DIRECTORIES)

install(FILES
    ${CMAKE_CURRENT_BINARY_DIR}/tiglmatlab.c
    ${CMAKE_CURRENT_SOURCE_DIR}/common.h
    ${CMAKE_CURRENT_SOURCE_DIR}/Readme.md
    ${TIXI_INCLUDE_DIRS}/tixi.h
    DESTINATION share/tigl3/matlab
    COMPONENT interfaces
)

# We cannot directly create a Makefile, as it would collide with cmake's makefile
# Hence, we are renaming it after installation
install(FILES
    ${CMAKE_CURRENT_BINARY_DIR}/Makefile-matlab
    RENAME Makefile
    DESTINATION share/tigl3/matlab
    COMPONENT interfaces
)


if(MATLAB_FOUND)

    # If matlab is found, the tiglmatlab.c file is compiled into a
    # mex file and is installed

    message(STATUS "MATLAB found: TiGL mex file will be build.")

    # c wrapper code
    set(TMAT_SRC tiglmatlab.c common.h)

    # add def for exports
    if(MSVC)
      set(TMAT_SRC ${TMAT_SRC} exports.def)
    endif()

    add_library(tigl_matlab SHARED ${TMAT_SRC})
    target_include_directories(tigl_matlab PRIVATE ${MATLAB_INCLUDE_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
    target_link_libraries(tigl_matlab PRIVATE ${MATLAB_mat_LIBRARY} ${MATLAB_mx_LIBRARY} ${MATLAB_mex_LIBRARY} tigl3)
    set_target_properties(tigl_matlab PROPERTIES SUFFIX ${MATLAB_MEX_SUFFIX} PREFIX "")

    install(TARGETS tigl_matlab DESTINATION share/tigl3/matlab
            COMPONENT interfaces)

else(MATLAB_FOUND)
    message(STATUS "MATLAB not found: The TiGL mex is not created. It can still be build using the generated tiglmatlab.c file.")
endif(MATLAB_FOUND)

endif() # matlab bindings enabled