Subversion Repositories SmartDukaan

'''

Created on 06-Dec-2011

@author: varungupta

'''

from shop2020.clients.UserClient import UserClient

from shop2020.model.v1.user.impl.PromotionRuleDataUtilities import \

    get_coupon_usage_count_by_user

from shop2020.thriftpy.model.v1.user.ttypes import PromotionException, Discount

from shop2020.utils.Utils import to_py_date

import datetime

def execute(cart, coupon_code, args):

    user_client = UserClient().get_client()

    user = user_client.getUserByCartId(cart.id)

    email = user.email.lower().strip()

    if email in args['emails']:

        discount_value = args['discount']

    else:

        raise PromotionException(111, 'You are not allowed to use this coupon')

    todate = datetime.datetime.now()

    if args['endOn'] and todate > to_py_date(args['endOn']):

        raise PromotionException(113, 'This coupon is expired.')

    count_coupon_usage = get_coupon_usage_count_by_user(coupon_code, user.userId)

    if count_coupon_usage >= args['usage_limit_for_user']:

        raise PromotionException(112, 'Your usage limit for this coupon is exhausted.')

    discounts = []

    if cart.lines:

        total_selling_price = 0

        total_discounted_price = 0

        for line in cart.lines:

            line_total_price = line.actualPrice * line.quantity

            line_total_discount = 0

            while line_total_discount < line_total_price and discount_value > 0:

                if line.actualPrice < discount_value:

                    discountGiven = line.actualPrice

                    quantity = min(line.quantity,int(discount_value/discountGiven))

                else:

                    discountGiven = discount_value

                    quantity = 1

                discount = Discount()

                discount.cart_id = cart.id

                discount.item_id = line.itemId

                discount.discount = discountGiven

                discount.quantity = quantity

                discounts.append(discount)

                discount_value = discount_value - discountGiven*quantity 

                line_total_discount += discountGiven*quantity

            total_selling_price += line_total_price

            total_discounted_price += line_total_price - line_total_discount

        cart.totalPrice = total_selling_price

        cart.discountedPrice = total_discounted_price

    return cart, discounts

def getDiscountOnItem(item):

    return None