import logging
from pathlib import Path
from typing import List, Tuple

import fire

logger = logging.getLogger(__name__)

# === Bot Loaders ===


def load_bot(
#    env_file_path: str = ".env",
    logging_config_path: str = "logging.yaml",
    model_cache_dir: str = "./model_cache",
    embedding_model_device: str = "cuda:0",
    debug: bool = False,
):
    """
    Load the financial assistant bot in production or development mode based on the `debug` flag

    In DEV mode the embedding model runs on CPU and the fine-tuned LLM is mocked.
    Otherwise, the embedding model runs on GPU and the fine-tuned LLM is used.

    Args:
        env_file_path (str): Path to the environment file.
        logging_config_path (str): Path to the logging configuration file.
        model_cache_dir (str): Path to the directory where the model cache is stored.
        embedding_model_device (str): Device to use for the embedding model.
        debug (bool): Flag to indicate whether to run the bot in debug mode or not.

    Returns:
        FinancialBot: An instance of the FinancialBot class.
    """

    from financial_bot import initialize

    # Be sure to initialize the environment variables before importing any other modules.
    initialize(logging_config_path=logging_config_path, env_file_path=env_file_path)

    from financial_bot import utils
    from financial_bot.langchain_bot import FinancialBot

    logger.info("#" * 100)
    utils.log_available_gpu_memory()
    utils.log_available_ram()
    logger.info("#" * 100)

    bot = FinancialBot(
        model_cache_dir=Path(model_cache_dir) if model_cache_dir else None,
        embedding_model_device=embedding_model_device,
        debug=debug,
    )

    return bot


# === Bot Runners ===



def run_local(
    about_me: str,
    question: str,
    history: List[Tuple[str, str]] = None,
    debug: bool = False,
):
    """
    Run the bot locally in production or dev mode.

    Args:
        about_me (str): A string containing information about the user.
        question (str): A string containing the user's question.
        history (List[Tuple[str, str]], optional): A list of tuples containing the user's previous questions
            and the bot's responses. Defaults to None.
        debug (bool, optional): A boolean indicating whether to run the bot in debug mode. Defaults to False.

    Returns:
        str: A string containing the bot's response to the user's question.
    """

    if debug is True:
        bot = load_bot_dev(model_cache_dir=None)
    else:
        bot = load_bot(model_cache_dir=None)

    inputs = {
        "about_me": about_me,
        "question": question,
        "history": history,
        "context": bot,
    }

    response = _run(**inputs)

    return response


def _run(**inputs):
    """
    Central function that calls the bot and returns the response.

    Args:
        inputs (dict): A dictionary containing the following keys:
            - context: The bot instance.
            - about_me (str): Information about the user.
            - question (str): The user's question.
            - history (list): A list of previous conversations (optional).

    Returns:
        str: The bot's response to the user's question.
    """

    from financial_bot import utils

    logger.info("#" * 100)
    utils.log_available_gpu_memory()
    utils.log_available_ram()
    logger.info("#" * 100)

    bot = inputs["context"]
    input_payload = {
        "about_me": inputs["about_me"],
        "question": inputs["question"],
        "to_load_history": inputs["history"] if "history" in inputs else [],
    }
    response = bot.answer(**input_payload)

    return response


if __name__ == "__main__":
    fire.Fire(run_local)