# coding=utf-8
import logging
import json
import requests
from urlparse import urljoin

from django.conf import settings

from apilib.exceptions import AliBankCardParamError, AliBankCardSysError
from apilib.utils_url import add_query
from apps.web.utils import LimitAttemptsManager


logger = logging.getLogger(__name__)


class BankRecognizer(object):
    """
    查询银行卡联行号相关信息
    helps: https://market.aliyun.com/products/57000002/cmapi017567.html?spm=5176.12901015.0.i12901015.5737525cxikPYJ#sku=yuncode1156700000
    """
    HOST = "https://cnaps.market.alicloudapi.com"

    def __init__(self, visitor, appCode=None, timeout=None):
        self._appCode = appCode or settings.ALI_BANK_CARD_APP_CODE
        self._timeout = timeout or 5
        self._visitor = visitor or "visitor"

        limiter = LimitAttemptsManager(self._visitor, self.__class__.__name__, maxTimes=30 if not settings.DEBUG else 9999)
        if limiter.is_exceeded_limit():
            raise AliBankCardParamError(u"访问频率超限")
        limiter.incr()

    def _request(self, path, callback=None):
        """
        目前使用的两个接口比较简单， request没有必要实现的太过于复杂 get请求足矣
        """
        url = urljoin(self.HOST, path)
        headers = {
            "Authorization": "APPCODE {}".format(self._appCode)
        }


        try:
            res = requests.get(url ,headers=headers, timeout=self._timeout)
            res.raise_for_status()
        except requests.RequestException as ree:
            logger.warning("[{} _request] send error request error = {}, path={}, appCode = {}******".format(
                self.__class__.__name__, ree, path, self._appCode[:-6]
            ))
            raise AliBankCardParamError(ree.message)

        return callback(res) if callback else res

    @staticmethod
    def _handle_response(res):
        """
        处理查询支行联行号的回调函数
        """
        try:
            result = json.loads(res.content.decode('utf-8', 'ignore'), strict=False)
        except (TypeError, ValueError):
            logger.debug('[_handle_sub_code] Can not decode response as JSON', exc_info=True)
            raise AliBankCardSysError(u"请求错误（10000）")

        if "resp" not in result:
            raise AliBankCardSysError(u"请求错误（10001）")
        if "RespCode" not in result["resp"]:
            raise AliBankCardSysError(u"请求错误（10002）")

        respCode = result["resp"]["RespCode"]
        if respCode != "200":
            raise AliBankCardParamError(result["resp"]["RespMsg"])

        return result

    def query_sub_code(self, bank=None, card=None, province=None, city=None, queryKey=None, page=None):
        """
        多条件查询银行支行信息
        :param bank:
        :param card:
        :param province:
        :param city:
        :param queryKey:
        :param page:
        """
        path = "/lianzhuo/searchcnaps"
        params = {
            "card": card or "", "bank": str(bank or ""),
            "province": str(province or ""), "city": str(city or ""), "key": str(queryKey or ""), "page": page or 1
        }
        path = add_query(path, params)

        return self._request(path, self._handle_response)

    def query_bank(self, card):
        """
        根据银行卡查询总行的信息
        """
        path = "/lundroid/querybankno"
        params = {
            "bankno": card
        }
        return self._request(add_query(path, params), self._handle_response)

    def query_all_bank(self, bank):
        """
        查询支持的银行总行
        这个接口不是很好用 建议不要使用
        bank为关键字
        """
        path = "/lundroid/querybank"
        params = {
            "bank": str(bank)
        }
        return self._request(add_query(path, params), self._handle_response)

    def query_sub_bank(self, subCode):
        """
        根据银行的支行联行号 查询银行
        """
        path = "/lundroid/querybankcode"
        params = {
            "bankcode": subCode
        }
        return self._request(add_query(path, params), self._handle_response)