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@author: Varun Gupta
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@author: Varun Gupta
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'''
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'''
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from shop2020.thriftpy.model.v1.user.ttypes import PromotionException
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from shop2020.thriftpy.model.v1.user.ttypes import PromotionException
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from shop2020.model.v1.user.impl.PromotionRuleDataUtilities import get_coupon_usage_count, get_coupon_usage_count_by_user
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from shop2020.model.v1.user.impl.PromotionRuleDataUtilities import get_coupon_usage_count, get_coupon_usage_count_by_user
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from shop2020.model.v1.user.impl.Dataservice import Discount
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def execute(cart, coupon_code, args):
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def execute(cart, coupon_code, args):
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    if 'items' not in args or 'discount' not in args or 'handset_display_name' not in args:
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    if 'items' not in args or 'discount' not in args or 'handset_display_name' not in args:
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        raise PromotionException(109, 'Error in rule arguments.')
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        raise PromotionException(109, 'Error in rule arguments.')
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        return cart
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        return cart
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    total_selling_price = 0
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    total_selling_price = 0
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    total_discounted_price = 0
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    total_discounted_price = 0
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    cart_has_specified_item = False
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    cart_has_specified_item = False
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    discounts = []
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    for line in cart.lines:
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    for line in cart.lines:
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        total_selling_price += line.actualPrice * line.quantity
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        total_selling_price += line.actualPrice * line.quantity
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        discount_value = 0
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        if line.itemId in args['items']:
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        if line.itemId in args['items']:
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            cart_has_specified_item = True
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            cart_has_specified_item = True
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            line.discountedPrice = round(line.actualPrice - args['discount'], 4)
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            line.discountedPrice = round(line.actualPrice - args['discount'], 4)
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            total_discounted_price += round(line.discountedPrice * line.quantity, 4)
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            total_discounted_price += round(line.discountedPrice * line.quantity, 4)
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            discount_value = args['discount']
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        else:
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        else:
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            total_discounted_price += round(line.actualPrice * line.quantity, 4)
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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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    if cart_has_specified_item is False:
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        raise PromotionException(115, 'This coupon is applicable only for ' + args['handset_display_name'])
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        raise PromotionException(115, 'This coupon is applicable only for ' + args['handset_display_name'])
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    cart.totalPrice = round(total_selling_price, 4)
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    cart.totalPrice = round(total_selling_price, 4)
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    cart.discountedPrice = total_discounted_price
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    cart.discountedPrice = total_discounted_price
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    return cart
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    return cart, discount

          

          

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