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amit.gupta |
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'''
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Created on 06-Jul-2011
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@author: Varun Gupta
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'''
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from shop2020.clients.CatalogClient import CatalogClient
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from shop2020.clients.UserClient import UserClient
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from shop2020.model.v1.user.impl.PromotionRuleDataUtilities import \
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get_coupon_usage_count, get_coupon_usage_count_by_user
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from shop2020.thriftpy.model.v1.user.ttypes import PromotionException, Discount
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from shop2020.model.v1.user.impl import PromotionDataAccessors
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def execute(cart, coupon):
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if coupon.usageLimit is not None:
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if coupon.usageLimit <= get_coupon_usage_count(coupon.couponCode):
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raise PromotionException(112, 'This promotion is over.')
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user_client = UserClient().get_client()
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user = user_client.getUserByCartId(cart.id)
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if coupon.usageLimitForUser is not None:
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if coupon.usageLimitForUser <= get_coupon_usage_count_by_user(coupon.couponCode, user.userId):
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raise PromotionException(111, 'You have already used this coupon maximum possible times.')
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if not cart.lines:
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return cart
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total_selling_price = 0
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total_discounted_price = 0
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cart_has_specified_item = False
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discounts = []
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couponMappings = PromotionDataAccessors.coupon_item_mapping_cache.get(coupon.couponCode)
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for line in cart.lines:
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total_selling_price += line.actualPrice * line.quantity
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discount_value = 0
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if couponMappings.has_key(line.itemId) :
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cart_has_specified_item = True
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line.discountedPrice = round(line.actualPrice - couponMappings[line.itemId], 4)
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total_discounted_price += round(line.discountedPrice * line.quantity, 4)
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discount_value = couponMappings[line.itemId]
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else:
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total_discounted_price += round(line.actualPrice * line.quantity, 4)
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if discount_value > 0:
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discount = Discount()
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discount.discount = discount_value
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discount.quantity = line.quantity
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discount.cart_id = cart.id
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discount.item_id = line.itemId
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discounts.append(discount)
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if cart_has_specified_item is False:
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raise PromotionException(115, 'This coupon is not applicable current items in cart')
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cart.totalPrice = round(total_selling_price, 4)
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cart.discountedPrice = total_discounted_price
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return cart, discounts
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def getDiscountOnItem(item):
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return 100
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