if(NOT $ENV{SHERPA_ONNX_IS_USING_BUILD_WASM_SH})
  message(FATAL_ERROR "Please use ./build-wasm-simd-vad.sh to build for wasm VAD")
endif()

if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/assets/silero_vad.onnx" OR NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/assets/tokens.txt")
  message(FATAL_ERROR "Please read ${CMAKE_CURRENT_SOURCE_DIR}/assets/README.md before you continue")
endif()

set(exported_functions
  # VAD
  SherpaOnnxCreateCircularBuffer
  SherpaOnnxDestroyCircularBuffer
  SherpaOnnxCircularBufferPush
  SherpaOnnxCircularBufferGet
  SherpaOnnxCircularBufferFree
  SherpaOnnxCircularBufferPop
  SherpaOnnxCircularBufferSize
  SherpaOnnxCircularBufferHead
  SherpaOnnxCircularBufferReset
  SherpaOnnxCreateVoiceActivityDetector
  SherpaOnnxDestroyVoiceActivityDetector
  SherpaOnnxVoiceActivityDetectorAcceptWaveform
  SherpaOnnxVoiceActivityDetectorEmpty
  SherpaOnnxVoiceActivityDetectorDetected
  SherpaOnnxVoiceActivityDetectorPop
  SherpaOnnxVoiceActivityDetectorClear
  SherpaOnnxVoiceActivityDetectorFront
  SherpaOnnxDestroySpeechSegment
  SherpaOnnxVoiceActivityDetectorReset
  SherpaOnnxVoiceActivityDetectorFlush
  # non-streaming ASR
  SherpaOnnxAcceptWaveformOffline
  SherpaOnnxCreateOfflineRecognizer
  SherpaOnnxCreateOfflineStream
  SherpaOnnxDecodeMultipleOfflineStreams
  SherpaOnnxDecodeOfflineStream
  SherpaOnnxDestroyOfflineRecognizer
  SherpaOnnxDestroyOfflineRecognizerResult
  SherpaOnnxDestroyOfflineStream
  SherpaOnnxDestroyOfflineStreamResultJson
  SherpaOnnxGetOfflineStreamResult
  SherpaOnnxGetOfflineStreamResultAsJson
  #
  SherpaOnnxFileExists
)
set(mangled_exported_functions)
foreach(x IN LISTS exported_functions)
  list(APPEND mangled_exported_functions "_${x}")
endforeach()
list(JOIN mangled_exported_functions "," all_exported_functions)

include_directories(${CMAKE_SOURCE_DIR})
set(MY_FLAGS " -s FORCE_FILESYSTEM=1 -s INITIAL_MEMORY=512MB -s ALLOW_MEMORY_GROWTH=1")
string(APPEND MY_FLAGS " -sSTACK_SIZE=10485760 ") # 10MB
string(APPEND MY_FLAGS " -sEXPORTED_FUNCTIONS=[_CopyHeap,_malloc,_free,${all_exported_functions}] ")
string(APPEND MY_FLAGS "--preload-file ${CMAKE_CURRENT_SOURCE_DIR}/assets@. ")
string(APPEND MY_FLAGS " -sEXPORTED_RUNTIME_METHODS=['ccall','stringToUTF8','setValue','getValue','lengthBytesUTF8','UTF8ToString'] ")

message(STATUS "MY_FLAGS: ${MY_FLAGS}")

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${MY_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${MY_FLAGS}")
set(CMAKE_EXECUTABLE_LINKER_FLAGS "${CMAKE_EXECUTABLE_LINKER_FLAGS} ${MY_FLAGS}")

if (NOT CMAKE_EXECUTABLE_SUFFIX STREQUAL ".js")
  message(FATAL_ERROR "The default suffix for building executables should be .js!")
endif()
# set(CMAKE_EXECUTABLE_SUFFIX ".html")

add_executable(sherpa-onnx-wasm-main-vad-asr sherpa-onnx-wasm-main-vad-asr.cc)
target_link_libraries(sherpa-onnx-wasm-main-vad-asr sherpa-onnx-c-api)
install(TARGETS sherpa-onnx-wasm-main-vad-asr DESTINATION bin/wasm/vad-asr)

install(
  FILES
    "$<TARGET_FILE_DIR:sherpa-onnx-wasm-main-vad-asr>/sherpa-onnx-wasm-main-vad-asr.js"
    "index.html"
    "app-vad-asr.js"
    "$<TARGET_FILE_DIR:sherpa-onnx-wasm-main-vad-asr>/sherpa-onnx-wasm-main-vad-asr.wasm"
    "$<TARGET_FILE_DIR:sherpa-onnx-wasm-main-vad-asr>/sherpa-onnx-wasm-main-vad-asr.data"
  DESTINATION
    bin/wasm/vad-asr
)