class Driver:
    def __init__(self):
        self.pc_driver = None
        self.mobile_driver = None
        self.driver = None

    def set_pc_driver(self, pc_driver):
        self.pc_driver = pc_driver

    def set_mobile_driver(self, mobile_driver):
        self.mobile_driver = mobile_driver

    def switch_to_driver(self, driver: str):
        match driver:
            case "pc" | "PC" | "Pc":
                self.driver = self.pc_driver

            case "mobile" | "Mobile":
                self.driver = self.mobile_driver

            case _:
                raise ValueError("The driver must be either pc or mobile")

    def current_driver(self):
        return "PC" if self.pc_driver == self.driver else "Mobile"