import logging
import traceback
import uuid
import requests
from requests.exceptions import RequestException
from django.conf import settings
from rest_framework.exceptions import APIException, ParseError

from apps.third.errors import KING_REQUEST_ERROR
from apps.utils.tools import print_roundtrip
from django.utils.timezone import now
from apps.third.king.king_api import kapis
from apps.utils.tools import singleton
from django.core.cache import cache
from apps.third.mixins import HandleLogMixin
import time
requests.packages.urllib3.disable_warnings()
myLogger = logging.getLogger('log')


@singleton
class KingClient(HandleLogMixin):
    """
    亚控数采
    """

    def __init__(self) -> None:
        self.king_enabled = getattr(settings, 'KING_ENABLED', False)
        if self.king_enabled:
            self.headers = {}
            self.log = {}
            # self._get_token()

    def _get_token(self):
        # is_ok, _ = self.request(**kapis['heartbeat'], raise_exception=False, timeout=10)
        # if is_ok == 'success':
        #     return
        current_val:str = cache.get('king_token')
        is_ok = 'success'
        if current_val != 'requesting':
            json = {
                'username': settings.KING_USERNAME,
                'password': settings.KING_PASSWORD
            }
            cache.set('king_token', 'requesting', timeout=None)
            is_ok, res = self.request(
                **kapis['login'], json=json, timeout=10, need_auth=False, raise_exception=False)
            if is_ok == "success":
                current_val = res['Authorization']
            else:
                myLogger.error(f'获取token失败: {is_ok}-{res}')
            cache.set('king_token', current_val, timeout=None)
        return is_ok, current_val
            


    def request(self, url: str, method: str = 'post', params=dict(), json=dict(), timeout=20, raise_exception=True, need_auth=True):
        if not self.king_enabled:
            raise ParseError('亚控对接未启用')
        if need_auth:
            count = 6
            while count > 0:
                token = cache.get('king_token')
                if token != 'requesting':
                    self.headers['Authorization'] = token
                    break
                time.sleep(0.5)
                count = count -1

        self.log = {"requested_at": now(), "id": uuid.uuid4(), "path": url, "method": method,
                    "params": params, "body": json, "target": "king", "result": 10, "headers": self.headers}
        try:
            r = getattr(requests, method)('{}{}'.format(settings.KING_BASE_URL, url),
                                          headers=self.headers, params=params, json=json, timeout=timeout, verify=False)
            # if settings.DEBUG:
            #     print_roundtrip(r)
            ret = r.text
            if 300 > r.status_code >= 200:
                ret = r.json()
                if 'code' in ret:
                    if  ret['code'] != 0:
                        if need_auth and ret['code'] in [-1, -2]: # and url != '/api/v1/variables':  # 认证失败
                            # 如果这里没有判断准确，可能会导致多次触发login
                            myLogger.error(f"亚控认证失败:  {self.headers}-{url}-{ret}")
                            is_ok, _ = self._get_token()
                            if is_ok == "success":
                                return self.request(url, method, params, json, timeout, raise_exception, need_auth)
                        
                        err_detail = dict(detail=f"亚控错误:  {ret['message']}",
                                        code='king_' + str(ret['code']))
                        self.handle_log(result='fail', response=ret)
                        if raise_exception:
                            raise ParseError(**err_detail)
                        return 'fail', err_detail
                    return 'success', ret['data']
                return 'success', ret
            else:
                self.handle_log(result='error', response=ret)
        except RequestException:
            self.handle_log(result='error', errors=traceback.format_exc())
        if raise_exception:
            raise APIException(**KING_REQUEST_ERROR)
        return 'error', KING_REQUEST_ERROR


kingClient = KingClient()