# -*- coding: utf-8 -*-
# !/usr/bin/env python

import copy
import datetime
import json
import logging

from typing import TYPE_CHECKING

from apilib.monetary import RMB
from apilib.utils_string import cn
from apilib.utils_sys import MemcachedLock
from apps.web.constant import START_DEVICE_STATUS

from apps.web.core.exceptions import ServiceException, MqttSubscribeError, ClientServiceTimeOutException
from apps.web.exceptions import UserServerException
from apps.web.user.models import ConsumeRecord
from apps.web.user.utils2 import generate_net_payment, ConsumeOrderStateEngine
from apps.web.utils import set_start_key_status

logger = logging.getLogger(__name__)

if TYPE_CHECKING:
    from apps.web.device.models import DeviceDict
    from apps.web.user.models import RefundMoneyRecord


# ------------------------ 以下为新增内容 ----------------------------------------------

class PolicyService(object):

    def __init__(self, order):  # type:(ConsumeRecord) -> None
        self._order = order

    def handle_verify_order(self):
        """
        检验订单
        """
        # 1. 防止支付超时
        if self._order.status != self._order.Status.WAIT_CONF:
            raise ServiceException({"result": 2, "description": u"订单状态异常，请前往个人中心查看订单"})

        if self._order.isFree:
            return

        # 2. 对订单用户金额做检验 注意 这个地方不使用免费来跳过 因为免费设置在组级别 而费用设置在套餐级别
        balance = self._order.user.calc_currency_balance(
            dealer=self._order.owner,
            group=self._order.group
        )

        if balance < RMB(0):
            raise ServiceException({"result": 1002, "description": u"当前账户余额不足，请充值后使用"})

        # 临时套餐的最小消费金额为0
        if balance < self._order.package.minAfterStartCoins:
            raise ServiceException({"result": 1002, "description": u"当前套餐账户最小余额为{}元，请充值后使用".format(self._order.package.minAfterStartCoins)})

        if self._order.isPostPaid:
            return

        try:
            payment = generate_net_payment(self._order)
        except UserServerException as e:
            raise ServiceException({"result": 1002, "description": e.message})

        return payment

    def handle_start_order(self):
        """
        执行订单
        """
        return self._order.device.deviceAdapter.start_device_realiable(self._order)

    def handle_account_order(self):
        """
        对账单进行扣款动作
        """
        self._order.frozen_payer_balance()


class StartDeviceEngine(object):

    def __init__(self, order):  # type:(ConsumeRecord) -> None
        self._order = order
        self._service = self.__get_service()  # type: PolicyService

    def __get_service(self):
        return PolicyService(self._order)

    def get_payment_info(self):
        return self._service.handle_verify_order()

    def start(self, *args, **kwargs):
        try:
            set_start_key_status(start_key=self._order.orderNo, state=START_DEVICE_STATUS.RUNNING)

            result = self._service.handle_start_order()
            self._service.handle_account_order()
            ConsumeOrderStateEngine(self._order).to_running(result)
            set_start_key_status(start_key=self._order.orderNo, state=START_DEVICE_STATUS.FINISHED)

        except ClientServiceTimeOutException:
            # 订单超时状态 此状态订单状态未知 有可能被事件服务器拯救
            logger.error("[{} start] order = {}, timeout error".format(self.__class__.__name__, self._order.orderNo))
            set_start_key_status(start_key=self._order.orderNo, state=START_DEVICE_STATUS.TIMEOUT)
            ConsumeOrderStateEngine(self._order).to_timeout(u"网络通信超时")

        except ServiceException as serviceErr:
            # 订单失败的状态 绝对的失败
            errorMsg = serviceErr.result
            logger.error("[{} start] order = {}, service error = {}".format(self.__class__.__name__, self._order.orderNo, errorMsg))
            set_start_key_status(start_key=self._order.orderNo, state=START_DEVICE_STATUS.FAILURE)
            ConsumeOrderStateEngine(self._order).to_failure(u"设备启动异常【{}】".format(errorMsg))

        except MqttSubscribeError as mqttErr:
            # 订单失败的状态 绝对的失败 该退钱退钱
            errorMsg = u'系统忙无响应，您支付的金币已经退还到您的账户。您可以重试，或者选择其他线路或其他设备（不需要再次支付）。'
            logger.error("[{} start] order = {}, mqtt error = {}".format(self.__class__.__name__, self._order.orderNo, mqttErr))
            set_start_key_status(start_key=self._order.orderNo, state=START_DEVICE_STATUS.FAILURE, reason=cn(errorMsg))
            ConsumeOrderStateEngine(self._order).to_failure(u"网络异常")

        except Exception as err:
            errorMsg = u'启动过程中有异常发生，您支付的金币已经退还到您的账户。'
            logger.exception("[{} start] order = {}, error = {}".format(self.__class__.__name__, self._order.orderNo, err))
            set_start_key_status(start_key=self._order.orderNo, state=START_DEVICE_STATUS.FAILURE, reason=cn(errorMsg))
            ConsumeOrderStateEngine(self._order).to_unknown(u"启动异常")


def wrapper_start_device(locker, proxy, *args, **kwargs):
    # type: (MemcachedLock, StartDeviceEngine, list, dict)->None

    try:
        proxy.start(*args, **kwargs)
    finally:
        locker.release()