set(ARCHEUS_STD_SDL2_WINDOW_SOURCES
)

set(ARCHEUS_STD_SDL2_INPUT_SOURCES
    src/input/sdl/keyboard.c
    src/input/sdl/mouse.c
)

set(ARCHEUS_STD_SDL2_GRAPHICS_SOURCES
    src/graphics/sdl/circle.c
    src/graphics/sdl/config.c
    src/graphics/sdl/line.c
    src/graphics/sdl/obround.c
    src/graphics/sdl/rectangle.c
    src/graphics/sdl/renderer.c
    src/graphics/sdl/sprite.c
    src/graphics/sdl/spritesheet.c
    src/graphics/sdl/text.c
    src/graphics/sdl/window.c
)

function(sdl2_check_and_init_needed ARCHEUS_STD_FLAGS ARCHEUS_STD_SOURCES ARCHEUS_STD_WINDOW_BACKEND ARCHEUS_STD_INPUT_BACKEND ARCHEUS_STD_GRAPHICS_BACKEND)
    #if no backend uses sdl return
    if(NOT ARCHEUS_STD_WINDOW_BACKEND STREQUAL "SDL2" AND NOT ARCHEUS_STD_INPUT_BACKEND STREQUAL "SDL2" AND NOT ARCHEUS_STD_GRAPHICS_BACKEND STREQUAL "SDL2")
        return()
    endif()

    string(APPEND ARCHEUS_STD_FLAGS "-DARC_SDL ")

    #get needed libraries for backends
    find_package(SDL2 REQUIRED)

    if(ARCHEUS_STD_GRAPHICS_BACKEND STREQUAL "SDL2")
        if(NOT PNG AND WIN32 AND NOT MSVC)
            set(PNG_LIBRARY "C:/Program Files(x86)/libpng")
            set(PNG_PNG_INCLUDE_DIR "C:/Program Files(x86)/libpng/include")
        endif()

        find_package(SDL2_image REQUIRED)
        find_package(SDL2_ttf REQUIRED)
    endif()

    #add matching files for the selected backends
    if(ARCHEUS_STD_INPUT_BACKEND STREQUAL "SDL2")
        list(APPEND ARCHEUS_STD_SOURCES ${ARCHEUS_STD_SDL2_INPUT_SOURCES})
    endif()

    if(ARCHEUS_STD_INPUT_BACKEND STREQUAL "SDL2")
        list(APPEND ARCHEUS_STD_SOURCES ${ARCHEUS_STD_SDL2_INPUT_SOURCES})
    endif()

    if(ARCHEUS_STD_GRAPHICS_BACKEND STREQUAL "SDL2")
        list(APPEND ARCHEUS_STD_SOURCES ${ARCHEUS_STD_SDL2_GRAPHICS_SOURCES})
    endif()

    target_include_directories(archeus_std
        PRIVATE ${SDL2_INCLUDE_DIRS}
        PRIVATE ${SDL2IMAGE_INCLUDE_DIRS}
    )

    target_link_libraries(archeus_std PUBLIC ${SDL2_LIBRARIES} SDL2_image::SDL2_image SDL2_ttf::SDL2_ttf)

    return(ARCHEUS_STD_SDL2_SOURCES)
endfunction()