if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "arm")
    set(GLES_NORMALLY_REQUIRED_FOR_ARCHITECTURE ON)
elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64")
    set(GLES_NORMALLY_REQUIRED_FOR_ARCHITECTURE ON)
else()
    set(GLES_NORMALLY_REQUIRED_FOR_ARCHITECTURE OFF)
endif()
option(USE_GLES "Enable using OpenGL ES" ${GLES_NORMALLY_REQUIRED_FOR_ARCHITECTURE})
option(GLES_VERSION "Version of OpenGL ES" 3)
set(IMGUI_SRC imgui_demo.cpp imgui_draw.cpp imgui_tables.cpp imgui_widgets.cpp imgui.cpp misc/cpp/imgui_stdlib.cpp)
set(IMGUI_BACKEND_SRC imgui_impl_sdlrenderer2.cpp imgui_impl_sdl2.cpp)
set(BACKEND_IMGUI_SRC_BASE main.cpp base85.cpp file_browser.cpp main.cpp RendererBackend.cpp theme.cpp)
foreach(SRC IN ITEMS ${IMGUI_BACKEND_SRC})
    list(APPEND IMGUI_SRC backends/${SRC})
endforeach()

foreach(SRC IN ITEMS ${IMGUI_SRC})
    list(APPEND BACKEND_IMGUI_SRC_BASE imgui/${SRC})
endforeach()
set(BACKEND_IMGUI_SRC )
foreach(SRC IN ITEMS ${BACKEND_IMGUI_SRC_BASE})
    list(APPEND BACKEND_IMGUI_SRC ${CMAKE_CURRENT_SOURCE_DIR}/${BACKEND_IMGUI_SRC_BASE})
endforeach()
set(BACKEND_IMGUI_INC_BASE imgui imgui/backends imgui/misc/cpp IconFontCppHeaders assets imgui-filebrowser)
set(BACKEND_IMGUI_INC ${INC} ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
foreach(INCDIR IN ITEMS ${BACKEND_IMGUI_INC_BASE})
    set(BACKEND_IMGUI_INC ${BACKEND_IMGUI_INC} ${CMAKE_CURRENT_SOURCE_DIR}/${INCDIR})
endforeach()
if(USE_GLES)
    set(GLComponents GLES${GLES_VERSION})
    set(GLTarget GLES${GLES_VERSION})
else()
    set(GLComponents OpenGL)
    set(GLTarget GL)
endif()
find_package(OpenGL COMPONENTS ${GLComponents})
if (NOT ${OpenGL_FOUND})
    if (DEFINED CMAKE_ANDROID_NDK)
        if (USE_GLES)
            find_path(GLES_INCLUDE_DIR GLES${GLES_VERSION}/gl${GLES_VERSION}.h HINTS ${CMAKE_ANDROID_NDK})
            find_library(GLES2_LIBRARY libGLESv2.so HINTS ${GLES_INCLUDE_DIR}/../lib)
            find_library(GLES3_LIBRARY libGLESv3.so HINTS ${GLES_INCLUDE_DIR}/../lib)
            add_library(OpenGL::${GLTarget} INTERFACE IMPORTED)
            target_include_directories(OpenGL::${GLTarget} INTERFACE ${GLES2_INCLUDE_DIR})
            target_link_libraries(OpenGL::${GLTarget} INTERFACE ${GLES2_LIBRARY} ${GLES3_LIBRARY})
        endif()
    endif()
endif()
add_ui_backend(imgui_ui ${BACKEND_IMGUI_SRC})
if(USE_GLES)
    target_compile_definitions(imgui_ui PRIVATE IMGUI_IMPL_OPENGL_ES${GLES_VERSION})
endif()
if(DEFINED EMSCRIPTEN)
	target_compile_options(imgui_ui PRIVATE "-sUSE_SDL_IMAGE=2")
    target_link_options(imgui_ui PUBLIC "-sMAX_WEBGL_VERSION=2" "-sMIN_WEBGL_VERSION=2" "-sFULL_ES3")
    target_link_libraries(imgui_ui PRIVATE  ${LIBINTL_LIBRARY})
else()
    find_package(SDL2 REQUIRED)
    find_package(SDL2_image REQUIRED)
    target_link_libraries(imgui_ui PRIVATE OpenGL::${GLTarget} SDL2::SDL2 SDL2_image::SDL2_image ${LIBINTL_LIBRARY})
endif()
target_include_directories(imgui_ui PRIVATE ${BACKEND_IMGUI_INC} ${LIBINTL_INCDIRS})
target_compile_definitions(imgui_ui PRIVATE IMGUI_USER_CONFIG="imgui_config.h")