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412 ashish 1 
'''
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Created on 05-Aug-2010
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@author: ashish
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'''
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from shop2020.thriftpy.logistics.ttypes import LogisticsInfo,\
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    LogisticsServiceException
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from shop2020.logistics.service.impl.DataAccessor import get_empty_AWB,\
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    get_shipment_info, initialize, get_logistics_estimation, get_provider,\
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    get_providers
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from shop2020.logistics.service.impl.Converters import to_t_awbupdate,\
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    to_t_provider
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from shop2020.clients.InventoryClient import InventoryClient
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from shop2020.config.client.ConfigClient import ConfigClient
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import datetime
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import math
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class LogisticsServiceHandler:
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    def __init__(self):
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        initialize()
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        config_client = ConfigClient()
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        self.cutoff_time = int(config_client.get_property('delivery_cutoff_time'))
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        self.stock_threshold = int(config_client.get_property('inventory_stock_threshold'))
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        self.time_to_producre = int(config_client.get_property('inventory_time_to_procure'))
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    def getProvider(self, providerId):
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        """
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        Returns a provider for a given provider ID. Throws an exception if none found.
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        Parameters:
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         - providerId
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        """
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        return to_t_provider(get_provider(providerId))
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    def getAllProviders(self, ):
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        """
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        Returns a list containing all the providers.
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        """
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        return [to_t_provider(provider) for provider in get_providers()]
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    def getLogisticsInfo(self, destination_pincode, itemId):
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        """
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        Parameters:
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         - destination_pincode
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         - sku_id
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        """
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        logistics_info = self.getLogisticsEstimation(itemId, destination_pincode)
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        logistics_info.airway_billno = get_empty_AWB(logistics_info.providerId)
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        return logistics_info
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    def getEmptyAWB(self, provider_id):
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        """
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        Parameters:
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         - provider_id
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        """
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        return get_empty_AWB(provider_id)
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    def getShipmentInfo(self, awb, providerId):
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        """
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        Parameters:
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         - awb
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        """
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        awb_updates = get_shipment_info(awb, providerId)
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        t_updates = []
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        for update in awb_updates:
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            t_updates.append(to_t_awbupdate(update))
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        return t_updates
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    def getLogisticsEstimation(self, itemId, destination_pin):
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        """
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        Parameters:
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         - itemId
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         - destination_pin
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        """
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        delivery_estimate = get_logistics_estimation(destination_pin)
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        delivery_time = 24*delivery_estimate.delivery_time
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        if self.cutoff_time <= datetime.datetime.now().hour:
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            delivery_time = delivery_time + 24
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        warehouse_loc = delivery_estimate.warehouse_location
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        try:
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            client = InventoryClient().get_client()
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            warehouse_id, items_in_inventory = client.getItemAvailabilityAtLocation(warehouse_loc, itemId)
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        except:
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            raise LogisticsServiceException(103, "Unable to fetch inventory information about this item.")
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        if items_in_inventory < self.stock_threshold :
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            delivery_time = delivery_time + self.time_to_producre
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        delivery_time = int(math.ceil(delivery_time/24.0))
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        logistics_info = LogisticsInfo()
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        logistics_info.deliveryTime = delivery_time
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        logistics_info.providerId = delivery_estimate.provider_id
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        logistics_info.warehouseId = warehouse_id
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        return logistics_info