def create_app_agent(
    self,
    application_window_name: str,
    application_root_name: str,
    request: str,
    mode: str,
) -> AppAgent:
    """
    Create the app agent for the host agent.
    :param application_window_name: The name of the application window.
    :param application_root_name: The name of the application root.
    :param request: The user request.
    :param mode: The mode of the session.
    :return: The app agent.
    """

    if mode == "normal" or "batch_normal":

        agent_name = (
            "AppAgent/{root}/{process}".format(
                root=application_root_name, process=application_window_name
            )
            if mode == "normal"
            else "BatchAgent/{root}/{process}".format(
                root=application_root_name, process=application_window_name
            )
        )

        app_agent: AppAgent = self.create_subagent(
            agent_type="app",
            agent_name=agent_name,
            process_name=application_window_name,
            app_root_name=application_root_name,
            is_visual=configs["APP_AGENT"]["VISUAL_MODE"],
            main_prompt=configs["APPAGENT_PROMPT"],
            example_prompt=configs["APPAGENT_EXAMPLE_PROMPT"],
            api_prompt=configs["API_PROMPT"],
        )

    elif mode == "follower":

        # Load additional app info prompt.
        app_info_prompt = configs.get("APP_INFO_PROMPT", None)

        agent_name = "FollowerAgent/{root}/{process}".format(
            root=application_root_name, process=application_window_name
        )

        # Create the app agent in the follower mode.
        app_agent = self.create_subagent(
            agent_type="follower",
            agent_name=agent_name,
            process_name=application_window_name,
            app_root_name=application_root_name,
            is_visual=configs["APP_AGENT"]["VISUAL_MODE"],
            main_prompt=configs["FOLLOWERAHENT_PROMPT"],
            example_prompt=configs["APPAGENT_EXAMPLE_PROMPT"],
            api_prompt=configs["API_PROMPT"],
            app_info_prompt=app_info_prompt,
        )

    else:
        raise ValueError(f"The {mode} mode is not supported.")

    # Create the COM receiver for the app agent.
    if configs.get("USE_APIS", False):
        app_agent.Puppeteer.receiver_manager.create_api_receiver(
            application_root_name, application_window_name
        )

    # Provision the context for the app agent, including the all retrievers.
    app_agent.context_provision(request)

    return app_agent

def create_puppeteer_interface(self) -> puppeteer.AppPuppeteer:
    """
    Create the Puppeteer interface to automate the app.
    :return: The Puppeteer interface.
    """
    return puppeteer.AppPuppeteer("", "")

def create_subagent(
    self,
    agent_type: str,
    agent_name: str,
    process_name: str,
    app_root_name: str,
    is_visual: bool,
    main_prompt: str,
    example_prompt: str,
    api_prompt: str,
    *args,
    **kwargs,
) -> BasicAgent:
    """
    Create an SubAgent hosted by the HostAgent.
    :param agent_type: The type of the agent to create.
    :param agent_name: The name of the SubAgent.
    :param process_name: The process name of the app.
    :param app_root_name: The root name of the app.
    :param is_visual: The flag indicating whether the agent is visual or not.
    :param main_prompt: The main prompt file path.
    :param example_prompt: The example prompt file path.
    :param api_prompt: The API prompt file path.
    :return: The created SubAgent.
    """
    app_agent = self.agent_factory.create_agent(
        agent_type,
        agent_name,
        process_name,
        app_root_name,
        is_visual,
        main_prompt,
        example_prompt,
        api_prompt,
        *args,
        **kwargs,
    )
    self.appagent_dict[agent_name] = app_agent
    app_agent.host = self
    self._active_appagent = app_agent

    return app_agent

def get_active_appagent(self) -> AppAgent:
    """
    Get the active app agent.
    :return: The active app agent.
    """
    return self._active_appagent

def get_prompter(
    self,
    is_visual: bool,
    main_prompt: str,
    example_prompt: str,
    api_prompt: str,
) -> HostAgentPrompter:
    """
    Get the prompt for the agent.
    :param is_visual: The flag indicating whether the agent is visual or not.
    :param main_prompt: The main prompt file path.
    :param example_prompt: The example prompt file path.
    :param api_prompt: The API prompt file path.
    :return: The prompter instance.
    """
    return HostAgentPrompter(is_visual, main_prompt, example_prompt, api_prompt)

def message_constructor(
    self,
    image_list: List[str],
    os_info: str,
    plan: List[str],
    prev_subtask: List[Dict[str, str]],
    request: str,
) -> List[Dict[str, Union[str, List[Dict[str, str]]]]]:
    """
    Construct the message.
    :param image_list: The list of screenshot images.
    :param os_info: The OS information.
    :param prev_subtask: The previous subtask.
    :param plan: The plan.
    :param request: The request.
    :return: The message.
    """
    hostagent_prompt_system_message = self.prompter.system_prompt_construction()
    hostagent_prompt_user_message = self.prompter.user_content_construction(
        image_list=image_list,
        control_item=os_info,
        prev_subtask=prev_subtask,
        prev_plan=plan,
        user_request=request,
    )

    if not self.blackboard.is_empty():
        blackboard_prompt = self.blackboard.blackboard_to_prompt()
        hostagent_prompt_user_message = (
            blackboard_prompt + hostagent_prompt_user_message
        )

    hostagent_prompt_message = self.prompter.prompt_construction(
        hostagent_prompt_system_message, hostagent_prompt_user_message
    )

    return hostagent_prompt_message

def print_response(self, response_dict: Dict) -> None:
    """
    Print the response.
    :param response_dict: The response dictionary to print.
    """

    application = response_dict.get("ControlText")
    if not application:
        application = "[The required application needs to be opened.]"
    observation = response_dict.get("Observation")
    thought = response_dict.get("Thought")
    bash_command = response_dict.get("Bash", None)
    subtask = response_dict.get("CurrentSubtask")

    # Convert the message from a list to a string.
    message = list(response_dict.get("Message", ""))
    message = "\n".join(message)

    # Concatenate the subtask with the plan and convert the plan from a list to a string.
    plan = list(response_dict.get("Plan"))
    plan = [subtask] + plan
    plan = "\n".join([f"({i+1}) " + str(item) for i, item in enumerate(plan)])

    status = response_dict.get("Status")
    comment = response_dict.get("Comment")

    utils.print_with_color(
        "Observations👀: {observation}".format(observation=observation), "cyan"
    )
    utils.print_with_color("Thoughts💡: {thought}".format(thought=thought), "green")
    if bash_command:
        utils.print_with_color(
            "Running Bash Command🔧: {bash}".format(bash=bash_command), "yellow"
        )
    utils.print_with_color(
        "Plans📚: {plan}".format(plan=plan),
        "cyan",
    )
    utils.print_with_color(
        "Next Selected application📲: {application}".format(
            application=application
        ),
        "yellow",
    )
    utils.print_with_color(
        "Messages to AppAgent📩: {message}".format(message=message), "cyan"
    )
    utils.print_with_color("Status📊: {status}".format(status=status), "blue")

    utils.print_with_color("Comment💬: {comment}".format(comment=comment), "green")

def process(self, context: Context) -> None:
    """
    Process the agent.
    :param context: The context.
    """
    self.processor = HostAgentProcessor(agent=self, context=context)
    self.processor.process()

    # Sync the status with the processor.
    self.status = self.processor.status

def process_comfirmation(self) -> None:
    """
    TODO: Process the confirmation.
    """
    pass