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- # coding=utf-8
- import datetime
- import typing
- from library.validator import Validator, UnicodeValidationError
- from library.validator.fields import StringField
- from apilib.monetary import RMB, VirtualCoin
- if typing:
- from apps.web.user.models import ConsumeRecord
- class Calculator(object):
- def __init__(self, order): # type:(ConsumeRecord) -> None
- self._order = order
- self._st, self._et = order.dateTimeAdded, order.finishedTime or datetime.datetime.now()
- self._package = order.package
- def calculate(self):
- """
- 计费的时候以n小时为周期 不满n小时计算n小时 不超过最大费用
- """
- price = VirtualCoin(self._package["price"])
- maxFee = VirtualCoin(self._package["maxFee"])
- cycle = float(self._package["cycle"])
- freeHour = float(self._package["freeHour"])
- duration = int((self._et - self._st).total_seconds())
- # 没有超过免费停车时间的
- if int(freeHour * 3600) > duration:
- return VirtualCoin(0)
- # 计算应该付款的费用
- cycleSecond = cycle * 3600
- n = duration // cycleSecond + int(bool(duration % cycleSecond))
- fee = price * n
- # 与单项最大费用做比较S
- return min(VirtualCoin(fee), VirtualCoin(maxFee))
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