import os
import UnityPy


def unpack_all_assets(source_folder: str, destination_folder: str):
    # iterate over all files in source folder
    for root, dirs, files in os.walk(source_folder):
        for file_name in files:
            # generate file_path
            file_path = os.path.join(root, file_name)
            # load that file via UnityPy.load
            env = UnityPy.load(file_path)

            # iterate over internal objects
            for obj in env.objects:
                # process specific object types
                if obj.type.name in ["Texture2D", "Sprite"]:
                    # parse the object data
                    data = obj.read()

                    # create destination path
                    dest = os.path.join(destination_folder, data.name)

                    # make sure that the extension is correct
                    # you probably only want to do so with images/textures
                    dest, ext = os.path.splitext(dest)
                    dest = dest + ".png"

                    img = data.image
                    img.save(dest)


if __name__ == "__main__":
    unpack_all_assets("F:\\data", "F:\\data_out")