import_hik_animation.py

def load_hik_animation_into_current_character(source_file_path=None, character=None):
    if not source_file_path:

        source_file_path = cmds.fileDialog2(
            fileFilter="Scene Files (*.ma *.mb *.fbx);;Maya ASCII (*.ma);;Maya Binary (*.mb);;Fbx file(*.fbx)",
            fileMode=1,
            caption="Select animation source file.",
        )

    if not source_file_path:
        raise Exception("source_file_path not found")

    if isinstance(source_file_path, list):
        for fp in source_file_path:
            load_hik_animation_into_current_character(fp, character)
        return

    if not character:
        current_character = mel.eval("hikGetCurrentCharacter();")
    else:
        current_character = character

    if source_file_path.endswith("mb"):
        typ = "mayaBinary"
    elif source_file_path.endswith("ma"):
        typ = "mayaAscii"
    elif source_file_path.lower().endswith("fbx"):
        typ = "FBX"
    else:
        raise Exception("'{}' has unknown file extension".format(source_file_path))

    cmds.file(source_file_path, typ=typ, r=True, mergeNamespacesOnClash=False, namespace="tmp_load_hik")

    source_character_nodes = cmds.ls(typ="HIKCharacterNode") or []
    source_character_nodes = list(filter(lambda x: x.startswith("tmp_load_hik"), source_character_nodes))
    if not source_character_nodes:
        raise Exception("Character node not found in the source fbx: {}".format(source_file_path))

    source_character = source_character_nodes[0]

    mel.eval("HIKCharacterControlsTool;")
    mel.eval("hikSelectCurrentCharacter(\"{}\");".format(current_character))
    mel.eval("hikSetCharacterInput(\"{}\", \"{}\");".format(current_character, source_character))
    mel.eval("hikUpdateSourceList; hikUpdateContextualUI;")
    mel.eval("hikBakeCharacter(0);")

    # cmds.file(unloadReference="tmp_load_hikRN")
    # cmds.file(source_file_path, removeReference=True)