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3299 varun.gupt 1 
'''
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Created on 14-Sept-2011
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@author: Varun Gupta
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Curve 8520    Rs.250 off
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Curve 3G 9300    Rs.250 off
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Torch 2 9810    Rs.600 off
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Playbook 16 GB    Rs.1390 off
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Playbook 32 GB    Rs.1690 off
3299 varun.gupt 11 
'''
3559 varun.gupt 12 
from shop2020.thriftpy.model.v1.user.ttypes import PromotionException, Discount
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from shop2020.model.v1.user.impl.PromotionRuleDataUtilities import get_coupon_usage_count
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def execute(cart, coupon_code, args):
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    #Allow only first 100 users to use the coupon
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    count_coupon_usage = get_coupon_usage_count(coupon_code)
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    if count_coupon_usage >= 100:
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        raise PromotionException(112, 'This promotion is over.')
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    discounts = []
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    if cart.lines:
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        total_selling_price = 0
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        total_discounted_price = 0
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        has_qualified_model = False
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        for line in cart.lines:
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            line.discountedPrice = line.actualPrice
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            discount_value = 0
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            if line.itemId in (5, 6, 7, 8, 9, 1499):  #Curve 8520
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                has_qualified_model = True
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                if line.actualPrice:
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                    line.discountedPrice = round(line.actualPrice  - 250)
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                    discount_value = 250
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            elif line.itemId in (10, 1560, 1561):  #Curve 3G 9300
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                has_qualified_model = True
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                if line.actualPrice:
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                    line.discountedPrice = line.actualPrice - 250
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                    discount_value = 250
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            elif line.itemId == 2016:  #Torch 2 9810
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                has_qualified_model = True
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                if line.actualPrice:
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                    line.discountedPrice = line.actualPrice - 600
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                    discount_value = 600
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3299 varun.gupt 60 
            elif line.itemId == 1543:  #Playbook 16 GB
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                has_qualified_model = True
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                if line.actualPrice:
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                    line.discountedPrice = line.actualPrice - 1390
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                    discount_value = 1390
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            elif line.itemId == 1550:  #Playbook 32 GB
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                has_qualified_model = True
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                if line.actualPrice:
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                    line.discountedPrice = line.actualPrice - 1690
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                    discount_value = 1690
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            total_selling_price += line.actualPrice * line.quantity
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            total_discounted_price += line.discountedPrice * line.quantity
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            if discount_value > 0:
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                discount = Discount()
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                discount.cart_id = cart.id
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                discount.item_id = line.itemId
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                discount.discount = discount_value
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                discount.quantity = line.quantity
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                discounts.append(discount)
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        if has_qualified_model is False:
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            raise PromotionException(115, 'This coupon is applicable only for selective Blackberry handsets.')
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        cart.totalPrice = total_selling_price
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        cart.discountedPrice = total_discounted_price
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    return cart, discounts