cmake_minimum_required(VERSION 3.14)
include(FetchContent)

FetchContent_Declare(
        openfst
        GIT_REPOSITORY  https://github.com/kkm000/openfst
        GIT_TAG         338225416178ac36b8002d70387f5556e44c8d05 # tag win/1.7.2.1
)

FetchContent_GetProperties(openfst)
if(NOT openfst_POPULATED)
    FetchContent_Populate(openfst)
    
    execute_process(
        COMMAND git apply --ignore-whitespace --whitespace=nowarn $ENV{SCOL_DEPENDENCIES_PATH}/CMake/Utils/openfst.patch
        WORKING_DIRECTORY ${openfst_SOURCE_DIR}
        RESULT_VARIABLE patch_result
        ERROR_QUIET
    )
    if (NOT ${patch_result} EQUAL 0)
        message(WARNING "Patch failed to apply.")
    endif()
    set(HAVE_BIN OFF CACHE BOOL "" FORCE)    
    set(HAVE_SCRIPT OFF CACHE BOOL "" FORCE)
    set(HAVE_COMPACT OFF CACHE BOOL "" FORCE)
    set(HAVE_COMPRESS OFF CACHE BOOL "" FORCE)
    set(HAVE_CONST OFF CACHE BOOL "" FORCE)
    set(HAVE_FAR OFF CACHE BOOL "" FORCE)
    set(HAVE_GRM OFF CACHE BOOL "" FORCE)
    set(HAVE_PDT OFF CACHE BOOL "" FORCE)
    set(HAVE_MPDT OFF CACHE BOOL "" FORCE)
    set(HAVE_LINEAR OFF CACHE BOOL "" FORCE)
    set(HAVE_LOOKAHEAD OFF CACHE BOOL "" FORCE)
    set(HAVE_SPECIAL OFF CACHE BOOL "" FORCE)
    include_directories(${openfst_SOURCE_DIR}/src/include)

    add_subdirectory(${openfst_SOURCE_DIR} ${openfst_BINARY_DIR})
endif()

if(CONDA_ROOT)
    if(MSVC)
        #install(TARGETS fstarcsort fstclosure fstcompile fstcompose fstconcat fstconnect fstconvert fstdeterminize
        #                fstdifference fstdisambiguate fstdraw fstencode fstepsnormalize fstequal fstequivalent
        #                fstinfo fstintersect fstinvert fstisomorphic fstmap fstminimize fstprint fstproject fstprune
        #                fstpush fstrandgen fstrelabel fstreplace fstreverse fstreweight fstrmepsilon fstshortestdistance
        #                fstshortestpath fstsymbols fstsynchronize fsttopsort fstunion
        #RUNTIME
        #    DESTINATION ${CMAKE_INSTALL_BINDIR}
        #    COMPONENT kaldi
        #)
        
        #install(TARGETS farcompilestrings farcreate farequal farextract farinfo farisomorphic farprintstrings
        #RUNTIME
        #    DESTINATION ${CMAKE_INSTALL_BINDIR}
        #    COMPONENT kaldi
        #)
        
        # install(TARGETS fstlinear fstloglinearapply
        # RUNTIME
        #     DESTINATION ${CMAKE_INSTALL_BINDIR}
        #     COMPONENT kaldi
        # )
        
        #install(TARGETS mpdtcompose mpdtexpand mpdtinfo mpdtreverse
        #RUNTIME
        #    DESTINATION ${CMAKE_INSTALL_BINDIR}
        #    COMPONENT kaldi
        #)
        #install(TARGETS pdtcompose pdtexpand pdtinfo pdtreplace pdtreverse pdtshortestpath
        
        #RUNTIME
        #    DESTINATION ${CMAKE_INSTALL_BINDIR}
        #    COMPONENT kaldi
        #)
        #install(TARGETS fstspecial
        
        #RUNTIME
        #    DESTINATION ${CMAKE_INSTALL_BINDIR}
        #    COMPONENT kaldi
        #)

        install(DIRECTORY ${openfst_SOURCE_DIR}/src/include/ DESTINATION include/
                COMPONENT kaldi
                FILES_MATCHING PATTERN "*.h")

        install(TARGETS fst fstngram
                EXPORT kaldi-targets
                ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT kaldi
                LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT kaldi NAMELINK_SKIP
                RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT kaldi)
    else()

        install(TARGETS fst fstngram
                LIBRARY
                    DESTINATION ${CMAKE_INSTALL_LIBDIR}
                    COMPONENT kaldi
                    NAMELINK_SKIP # Link to so with version to avoid conflicts with OpenFst 1.8.1 on conda
                )

    endif()

else() # Original functionality

    install(DIRECTORY ${openfst_SOURCE_DIR}/src/include/ DESTINATION include/
            FILES_MATCHING PATTERN "*.h")

    install(TARGETS fst fstngram
            EXPORT kaldi-targets
            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
            RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

endif()