import logging

import requests

from azbankgateways.banks import BaseBank
from azbankgateways.exceptions import BankGatewayConnectionError, SettingDoesNotExist
from azbankgateways.exceptions.exceptions import BankGatewayRejectPayment
from azbankgateways.models import BankType, CurrencyEnum, PaymentStatus
from azbankgateways.utils import get_json


class SEP(BaseBank):
    _merchant_code = None
    _terminal_code = None

    def __init__(self, **kwargs):
        super(SEP, self).__init__(**kwargs)
        if not self._is_strict_origin_policy_enabled():
            raise SettingDoesNotExist(
                "SECURE_REFERRER_POLICY is not set to 'strict-origin-when-cross-origin' in django setting,"
                " it's mandatory for Saman gateway"
            )

        self.set_gateway_currency(CurrencyEnum.IRR)
        self._token_api_url = "https://sep.shaparak.ir/onlinepg/onlinepg"
        self._payment_url = "https://sep.shaparak.ir/OnlinePG/OnlinePG"
        self._verify_api_url = "https://sep.shaparak.ir/verifyTxnRandomSessionkey/ipg/VerifyTransaction"

    def get_bank_type(self):
        return BankType.SEP

    def set_default_settings(self):
        for item in ["MERCHANT_CODE", "TERMINAL_CODE"]:
            if item not in self.default_setting_kwargs:
                raise SettingDoesNotExist()
            setattr(self, f"_{item.lower()}", self.default_setting_kwargs[item])

    def get_pay_data(self):
        data = {
            "action": "Token",
            "Amount": self.get_gateway_amount(),
            "TerminalId": self._merchant_code,
            "ResNum": self.get_tracking_code(),
            "RedirectURL": self._get_gateway_callback_url(),
            "CellNumber": self.get_mobile_number(),
        }
        data.update(self.get_custom_data())
        return data

    def prepare_pay(self):
        super(SEP, self).prepare_pay()

    def pay(self):
        super(SEP, self).pay()
        data = self.get_pay_data()
        response_json = self._send_data(self._token_api_url, data)
        if str(response_json["status"]) == "1":
            token = response_json["token"]
            self._set_reference_number(token)
        else:
            logging.critical("SEP gateway reject payment")
            raise BankGatewayRejectPayment(self.get_transaction_status_text())

    """
    : gateway
    """

    def _get_gateway_payment_url_parameter(self):
        return self._payment_url

    def _get_gateway_payment_method_parameter(self):
        return "POST"

    def _get_gateway_payment_parameter(self):
        params = {
            "Token": self.get_reference_number(),
            "GetMethod": "true",
        }
        return params

    """
    verify from gateway
    """

    def prepare_verify_from_gateway(self):
        super(SEP, self).prepare_verify_from_gateway()
        request = self.get_request()
        tracking_code = request.GET.get("ResNum")
        token = request.GET.get("Token")
        self._set_tracking_code(tracking_code)
        self._set_bank_record()
        ref_num = request.GET.get("RefNum")
        if request.GET.get("State", "NOK") == "OK" and ref_num:
            self._set_reference_number(ref_num)
            self._bank.reference_number = ref_num
            extra_information = f"TRACENO={request.GET.get('TRACENO')}, RefNum={ref_num}, Token={token}"
            self._bank.extra_information = extra_information
            self._bank.save()

    def verify_from_gateway(self, request):
        super(SEP, self).verify_from_gateway(request)

    """
    verify
    """

    def get_verify_data(self):
        super(SEP, self).get_verify_data()
        return {"RefNum": self.get_reference_number(), "TerminalNumber": self._merchant_code}

    def prepare_verify(self, tracking_code):
        super(SEP, self).prepare_verify(tracking_code)

    def verify(self, transaction_code):
        super(SEP, self).verify(transaction_code)
        data = self.get_verify_data()
        result = self._send_data(api=self._verify_api_url, data=data)
        if result.get('ResultCode') == 0:
            self._set_payment_status(PaymentStatus.COMPLETE)
        else:
            self._set_payment_status(PaymentStatus.CANCEL_BY_USER)
            logging.debug("SEP gateway unapprove payment")

    def _send_data(self, api, data):
        try:
            response = requests.post(api, json=data, timeout=self.get_timeout())
        except requests.Timeout:
            logging.exception("SEP time out gateway {}".format(data))
            raise BankGatewayConnectionError()
        except requests.ConnectionError:
            logging.exception("SEP time out gateway {}".format(data))
            raise BankGatewayConnectionError()

        response_json = get_json(response)
        self._set_transaction_status_text(response_json.get("errorDesc"))
        return response_json