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# pylint: skip-file
import json
import string
import os
import datetime
import time
import requests

from requests.adapters                    import HTTPAdapter
from requests.packages.urllib3.util.retry import Retry
from requests                             import HTTPError,Session
from urllib.parse                         import urljoin,quote
from urllib.request                       import urlretrieve
from errors.rag_err                       import UnprocessableEntity, LLMError

basedir = os.path.join(os.path.dirname(__file__))


class TimeoutHTTPAdapter(HTTPAdapter):
    def __init__(self, timeout, *args, **kwargs):
        """TimeoutHTTPAdapter constructor.
        Args:
            timeout (int): How many seconds to wait for the server to send data before
                giving up.
        """
        self.timeout = timeout
        super().__init__(*args, **kwargs)

    def send(self, request, **kwargs):
        """Override :obj:`HTTPAdapter` send method to add a default timeout."""
        timeout = kwargs.get("timeout")
        if timeout is None:
            kwargs["timeout"] = self.timeout

        return super().send(request, **kwargs)


class GeneNetworkQAClient(Session):
    """GeneNetworkQA Client

    This class provides a client object interface to the GeneNetworkQA API.
    It extends the `requests.Session` class and includes authorization, base URL,
    request timeouts, and request retries.

    Args:
        account (str): Base address subdomain.
        api_key (str): API key.
        version (str, optional): API version, defaults to "v3".
        timeout (int, optional): Timeout value, defaults to 5.
        total_retries (int, optional): Total retries value, defaults to 5.
        backoff_factor (int, optional): Retry backoff factor value, defaults to 30.

    Usage:
        from genenetworkqa import GeneNetworkQAClient
        gnqa = GeneNetworkQAClient(account="account-name", api_key="XXXXXXXXXXXXXXXXXXX...")
    """

    BASE_URL = 'https://genenetwork.fahamuai.com/api/tasks'

    def __init__(self, account, api_key, version="v3", timeout=30, total_retries=5, backoff_factor=30):
        super().__init__()
        self.headers.update(
            {"Authorization": "Bearer " + api_key})
        self.answer_url = f"{self.BASE_URL}/answers"
        self.feedback_url = f"{self.BASE_URL}/feedback"

        adapter = TimeoutHTTPAdapter(
            timeout=timeout,
            max_retries=Retry(
                total=total_retries,
                status_forcelist=[429, 500, 502, 503, 504],
                backoff_factor=backoff_factor,
            ),
        )

        self.mount("https://", adapter)
        self.mount("http://", adapter)

    @staticmethod
    def format_bibliography_info(bib_info):

        if isinstance(bib_info, str):
            # Remove '.txt'
            bib_info = bib_info.removesuffix('.txt')
        elif isinstance(bib_info, dict):
            # Format string bibliography information
            bib_info = "{0}.{1}.{2}.{3} ".format(bib_info.get('author', ''),
                                                 bib_info.get('title', ''),
                                                 bib_info.get('year', ''),
                                                 bib_info.get('doi', ''))
        return bib_info

    @staticmethod
    def ask_the_documents(extend_url, my_auth):
        try:
            response = requests.post(
                base_url + extend_url, data={}, headers=my_auth)
            response.raise_for_status()
        except requests.exceptions.RequestException as e:
            # Handle the exception appropriately, e.g., log the error
            raise RuntimeError(f"Error making the request: {e}")

        if response.status_code != 200:
            return negative_status_msg(response), 0

        task_id = get_task_id_from_result(response)
        response = get_answer_using_task_id(task_id, my_auth)

        if response.status_code != 200:

            return negative_status_msg(response), 0

        return response, 1

    @staticmethod
    def negative_status_msg(response):
        return f"Error: Status code -{response.status_code}- Reason::{response.reason}"
      #  return f"Problems\n\tStatus code => {response.status_code}\n\tReason => {response.reason}"

    def ask(self, exUrl, *args, **kwargs):
        askUrl = self.BASE_URL + exUrl
        res = self.custom_request('POST', askUrl, *args, **kwargs)
        if (res.status_code != 200):
            return self.negative_status_msg(res), 0
        task_id = self.getTaskIDFromResult(res)
        return res, task_id

    def answer(self, taskid, *args, **kwargs):
        query = self.answer_url + self.extendForTaskID(taskid)
        res = self.custom_request('GET', query, *args, **kwargs)
        if (res.status_code != 200):
            print('The result is {0}',format(res))
            return self.negative_status_msg(res), 0
        return res, 1

    def get_answer(self, taskid, *args, **kwargs):
        query = self.answer_url + self.extendTaskID(taskid)
        res = self.custom_request('GET', query, *args, **kwargs)
        if (res.status_code != 200):
            print('The result is {0}',format(res))
            return self.negative_status_msg(res), 0
        return res, 1

    def custom_request(self, method, url, *args, **kwargs):

        max_retries = 50
        retry_delay = 3

        for i in range(max_retries):
            try:
                response = super().request(method, url, *args, **kwargs)
                response.raise_for_status()

            except requests.exceptions.HTTPError as error:
                if error.response.status_code ==500:
                    raise LLMError(error.request, error.response, f"Response Error,status_code:{error.response.status_code},Reason: Use of Invalid Token")
                elif error.response.status_code ==404:
                    raise LLMError(error.request,error.response,f"404 Client Error: Not Found for url: {self.BASE_URL}")
                raise error

            except requests.exceptions.RequestException as error:
                raise error


            if response.ok:
                if method.lower() == "get" and response.json().get("data") is None:
                    time.sleep(retry_delay)
                    continue
                else:
                    return response
            else:
                time.sleep(retry_delay)
        return response

    @staticmethod
    def get_task_id_from_result(response):
        task_id = json.loads(response.text)
        result = f"?task_id={task_id.get('task_id', '')}"
        return result

    @staticmethod
    def get_answer_using_task_id(extend_url, my_auth):
        try:
            response = requests.get(
                answer_url + extend_url, data={}, headers=my_auth)
            response.raise_for_status()
            return response
        except requests.exceptions.RequestException as error:
            # Handle the exception appropriately, e.g., log the error
            raise error

    @staticmethod
    def filter_response_text(val):
        """
        Filters out non-printable characters from the input string and parses it as JSON.

        Args:
            val (str): Input string to be filtered and parsed.

        Returns:
            dict: Parsed JSON object.
        # remove  this
        """
        return json.loads(''.join([str(char) for char in val if char in string.printable]))

    def getTaskIDFromResult(self, res):
        return json.loads(res.text)

    def extendTaskID(self, task_id):
        return '?task_id=' + str(task_id['task_id'])

    def extendForTaskID(self, task_id):
        return '?task_id=' + str(task_id)

    def get_gnqa(self, query):
        qstr = quote(query)
        res, task_id = api_client.ask('?ask=' + qstr)
        res, success = api_client.get_answer(task_id)

        if success == 1:
            resp_text = filter_response_text(res.text)
            answer = resp_text.get('data', {}).get('answer', '')
            context = resp_text.get('data', {}).get('context', '')
            return answer, context
        else:
            return res, "Unfortunately, I have nothing."