class Logger:
    def __init__(self, log_file):
        self.log_file = log_file

    def log(self, name, message):
        try:
            with open(self.log_file, "a", encoding="utf-8") as f:
                f.write(f"[{name}]: {message}\n")
        except OSError as ex:
            print(f"Error logging message: {ex}")

    def __call__(self, name, message):
        self.log(name, message)