Subversion Repositories SmartDukaan

'''
Created on 13-Sep-2010

@author: rajveer
'''

from shop2020.logistics.service.impl import DataService
from shop2020.logistics.service.impl.DataService import Awb, AwbUpdate, Provider, \
     DeliveryEstimate, WarehouseAllocation, \
    PublicHolidays, ServiceableLocationDetails, PickupStore
from shop2020.thriftpy.logistics.ttypes import LogisticsServiceException,\
    DeliveryType
from shop2020.utils.Utils import log_entry, to_py_date, to_java_date
from sqlalchemy.sql import or_
from elixir import session
import datetime, time
import sys
import logging
logging.basicConfig(level=logging.DEBUG)

warehouse_allocation_cache = {}
serviceable_location_cache = {}
delivery_estimate_cache = {}

'''
This class is for only data transfer. Never used outside this module.
'''
class _DeliveryEstimateObject:
    def __init__(self, delivery_time, delivery_delay, provider_id, codAllowed, otgAvailable):
        self.delivery_time = delivery_time
        self.delivery_delay = delivery_delay
        self.provider_id = provider_id
        self.codAllowed = codAllowed
        self.otgAvailable = otgAvailable
    
def initialize(dbname="logistics", db_hostname="localhost"):
    log_entry("initialize@DataAccessor", "Initializing data service")
    DataService.initialize(dbname, db_hostname)
    print "Starting cache population at: " + str(datetime.datetime.now())
    __cache_warehouse_allocation_table()
    __cache_serviceable_location_details_table()
    __cache_delivery_estimate_table()
    close_session()
    print "Done cache population at: " + str(datetime.datetime.now())

def __cache_delivery_estimate_table():
    delivery_estimates = DeliveryEstimate.query.all()
    for delivery_estimate in delivery_estimates:
        delivery_estimate_cache[delivery_estimate.destination_pin, delivery_estimate.provider_id]\
        =delivery_estimate.delivery_time, delivery_estimate.delivery_delay

def __cache_serviceable_location_details_table():
    serviceable_locations = ServiceableLocationDetails.query.filter(or_("exp!=0","cod!=0"))
    for serviceable_location in serviceable_locations:
        try:
            provider_pincodes = serviceable_location_cache[serviceable_location.provider_id]
        except:
            provider_pincodes = {}
            serviceable_location_cache[serviceable_location.provider_id] = provider_pincodes 
        provider_pincodes[serviceable_location.dest_pincode] = serviceable_location.dest_code, serviceable_location.exp, serviceable_location.cod, serviceable_location.otgAvailable

def __cache_warehouse_allocation_table():
    warehouse_allocations = WarehouseAllocation.query.all()
    for warehouse_allocation in warehouse_allocations:
        warehouse_allocation_cache[warehouse_allocation.pincode]=warehouse_allocation.primary_warehouse_location

def get_provider(provider_id):
    provider =  Provider.get_by(id=provider_id)
    return provider

def get_providers():
    providers = Provider.query.filter_by(isActive = 1).all()
    return providers 

def get_logistics_estimation(destination_pin, item_selling_price):
    logging.info("Getting logistics estimation for pincode:" + destination_pin )
    
    provider_id, codAllowed, otgAvailable = __get_logistics_provider_for_destination_pincode(destination_pin, item_selling_price)
    
    if not provider_id:
        raise LogisticsServiceException(101, "No provider assigned for pincode: " + str(destination_pin))
    try:
        delivery_time = delivery_estimate_cache[destination_pin, provider_id][0]
        delivery_delay = delivery_estimate_cache[destination_pin, provider_id][1]
        delivery_estimate = _DeliveryEstimateObject(delivery_time, delivery_delay, provider_id, codAllowed, otgAvailable)
        return delivery_estimate
    except Exception as ex:
        print ex
        raise LogisticsServiceException(103, "No Logistics partner listed for this destination pincode and the primary warehouse")

def __get_logistics_provider_for_destination_pincode(destination_pin, item_selling_price):
    if item_selling_price >= 5000 and item_selling_price <= 10000 and serviceable_location_cache.get(6).has_key(destination_pin):
        dest_code, exp, iscod, otgAvailable = serviceable_location_cache.get(6).get(destination_pin)
        iscod = iscod and item_selling_price <= 25000
        otgAvailable = otgAvailable and item_selling_price >= 2000
        return 6, iscod, otgAvailable
    
    if serviceable_location_cache.get(3).has_key(destination_pin):
        dest_code, exp, iscod, otgAvailable = serviceable_location_cache.get(3).get(destination_pin)
        iscod = iscod and item_selling_price <= 25000
        otgAvailable = otgAvailable and item_selling_price >= 2000
        return 3, iscod, otgAvailable
    
    if serviceable_location_cache.get(1).has_key(destination_pin):
        dest_code, exp, iscod, otgAvailable = serviceable_location_cache.get(1).get(destination_pin)
        iscod = iscod and item_selling_price <= 9600
        otgAvailable = otgAvailable and item_selling_price >= 2000
        return 1, iscod, otgAvailable
    else:
        return None, False    

def get_destination_code(providerId, pinCode):
    serviceableLocationDetail = ServiceableLocationDetails.query.filter_by(provider_id = providerId, dest_pincode = pinCode).one()
    return serviceableLocationDetail.dest_code
    
def add_empty_AWBs(numbers, provider_id, type):
    for number in numbers:
        query = Awb.query.filter_by(awb_number = number, provider_id = provider_id)
        try:
            query.one()
        except:    
            awb = Awb()
            awb.awb_number = number
            awb.provider_id = provider_id
            awb.is_available = True
            awb.type = type
    session.commit()

def set_AWB_as_used(awb_number):
    query = Awb.query.filter_by(awb_number = awb_number)
    awb = query.one() 
    awb.is_available=False
    session.commit()
    
def get_empty_AWB(provider_id, type = DeliveryType.PREPAID):
    query = Awb.query.with_lockmode("update").filter_by(provider_id = provider_id, is_available = True)  #check the provider thing
    if type == DeliveryType.PREPAID:
        query = query.filter_by(type="Prepaid")
    if type == DeliveryType.COD:
        query = query.filter_by(type="COD")
    
    try:
        awb = query.first()
        awb.is_available = False
        session.commit()
        return awb.awb_number
    except:
        raise LogisticsServiceException(103, "Unable to get an AWB for the given Provider: " + str(provider_id))

def get_free_awb_count(provider_id, type):
    count = Awb.query.filter_by(provider_id = provider_id, is_available = True, type=type).count()
    if count == None:
        count = 0
    return count
   
def get_shipment_info(awb_number, provider_id):
    awb = Awb.get_by(awb_number = awb_number, provider_id = provider_id)
    query = AwbUpdate.query.filter_by(awb = awb)
    info = query.all()
    return info

def store_shipment_info(update):
    updates = AwbUpdate.query.filter_by(providerId = update.providerId, awbNumber  = update.awbNumber, location = update.location, date = to_py_date(update.date), status = update.status, description = update.description).all()
    if not updates:
        dupdate = AwbUpdate()
        dupdate.providerId = update.providerId
        dupdate.awbNumber  = update.awbNumber
        dupdate.location = update.location
        dupdate.date = to_py_date(update.date)
        dupdate.status = update.status
        dupdate.description = update.description
        session.commit()
        
def get_holidays(start_date, end_date):
    query = PublicHolidays.query
    if start_date != -1:
        query = query.filter(PublicHolidays.date >= to_py_date(start_date))
    if end_date != -1:
        query = query.filter(PublicHolidays.date <= to_py_date(end_date))
    holidays = query.all()
    holiday_dates = [to_java_date(datetime.datetime(*time.strptime(str(holiday.date), '%Y-%m-%d')[:3])) for holiday in holidays] 
    return holiday_dates

def get_provider_for_pickup_type(pickUp):
    return Provider.query.filter(Provider.pickup == pickUp).first().id

def close_session():
    if session.is_active:
        print "session is active. closing it."
        session.close()

def is_alive():
    try:
        session.query(Awb.id).limit(1).one()
        return True
    except:
        return False

def get_all_pickup_stores():
    pickupStores = PickupStore.query.all()
    return pickupStores

def get_pickup_store(storeId):
    return PickupStore.query.filter_by(id = storeId).one()

def get_pickup_store_by_hotspot_id(hotspotId):
    return PickupStore.query.filter_by(hotspotId = hotspotId).one()

def add_pincode(provider, pincode, destCode, exp, cod, stationType, otgAvailable):
    provider = Provider().query.filter_by(id = provider).one()
    serviceableLocationDetails = ServiceableLocationDetails()
    serviceableLocationDetails.provider = provider
    serviceableLocationDetails.dest_pincode = pincode
    serviceableLocationDetails.dest_code = destCode
    serviceableLocationDetails.exp = exp
    serviceableLocationDetails.cod = cod
    serviceableLocationDetails.station_type = stationType
    serviceableLocationDetails.otgAvailable = otgAvailable
    session.commit()

def update_pincode(providerId, pincode, exp, cod, otgAvailable):
    serviceableLocationDetails = ServiceableLocationDetails.get_by(provider_id = providerId, dest_pincode = pincode)
    serviceableLocationDetails.exp = exp
    serviceableLocationDetails.cod = cod
    serviceableLocationDetails.otgAvailable = otgAvailable
    session.commit()
    
def adjust_delivery_time(start_time, delivery_days):
    '''
    Returns the actual no. of days which will pass while 'delivery_days'
    no. of business days will pass since 'order_time'. 
    '''
    start_date = start_time.date()
    end_date = start_date + datetime.timedelta(days = delivery_days)
    holidays = get_holidays(to_java_date(start_time), -1)
    holidays = [to_py_date(holiday).date() for holiday in holidays]
    
    while start_date <= end_date:
        if start_date.weekday() == 6 or start_date in holidays:
            delivery_days = delivery_days + 1
            end_date = end_date + datetime.timedelta(days = 1)
        start_date = start_date + datetime.timedelta(days = 1)
    
    return delivery_days