Subversion Repositories SmartDukaan

import pymongo
from elixir import *
from shop2020.model.v1.catalog.impl import DataService
from shop2020.model.v1.catalog.impl.DataService import Item
from shop2020.clients.InventoryClient import InventoryClient
from dtr.utils.utils import to_java_date
from datetime import datetime, timedelta
import time

DataService.initialize(db_hostname='localhost')

con = None
SOURCE_MAP = {'AMAZON':1,'FLIPKART':2,'SNAPDEAL':3,'SAHOLIC':4}
DISCOUNT_TYPE = {'MRP':1,'DP':2}
LATEST_UPDATED_ITEMS = []

now = datetime.now()

class __SkuInfo:
    
    def __init__(self, _id, skuBundleId, category_id, mrp, available_price, source_id, rank, maxNlc, minNlc, schemeAmount, minDiscount, \
                 maxDiscount, discountType, dp, nlcPoints, bestSellerPoints, totalPoints, status, in_stock, maxprice, brand):
        self._id = _id
        self.skuBundleId = skuBundleId
        self.category_id = category_id
        self.mrp = mrp
        self.available_price = available_price
        self.source_id = source_id
        self.rank = rank
        self.maxNlc = maxNlc
        self.minNlc = minNlc
        self.schemeAmount = schemeAmount
        self.minDiscount = minDiscount
        self.maxDiscount = maxDiscount
        self.discountType = discountType
        self.dp = dp
        self.nlcPoints = nlcPoints
        self.bestSellerPoints = bestSellerPoints
        self.totalPoints = totalPoints
        self.status = status
        self.in_stock = in_stock
        self.maxprice = maxprice
        self.brand = brand


def get_mongo_connection(host='localhost', port=27017):
    global con
    if con is None:
        print "Establishing connection %s host and port %d" %(host,port)
        try:
            con = pymongo.MongoClient(host, port)
        except Exception, e:
            print e
            return None
    return con

def populateStuff():
    print "Inside populate"
    global LATEST_UPDATED_ITEMS
    """Fetch latest updated items across portals
       and calculate max and min R-Nlc"""
    offset= 0
    while(True):
        print "Fetching records offset %d and limit %d" %(offset,300)
        topSkus = list(get_mongo_connection().Catalog.MasterData.find( {"$and":[{'updatedOn': { "$gt": to_java_date(now - timedelta(hours=4))} }, { 'source_id' : { "$in": SOURCE_MAP.values() } }] }).skip(offset).limit(300))
        if len((topSkus)) == 0:
            break
        #topSkus = collection.find( {'_id':664})
        for sku in topSkus:
            """Fix this """
            #TODO Compute deal flags else where.
            info = __SkuInfo(sku['_id'], sku['skuBundleId'], sku['category_id'], sku['mrp'], sku['available_price'], sku['source_id'], sku['rank'], None, None, 0.0, None, \
                             None, None, None, None, None, None, sku['status'], sku['in_stock'],None,sku['brand'].strip().upper())
            exceptionalNlc = list(get_mongo_connection().Catalog.ExceptionalNlc.find( {"$and" : [ {'sku':info._id}, {'overrideNlc':1} ]} ))
            if len(exceptionalNlc) > 0:
                """Exceptional nlc found, no need to calculate max and min R-nlc"""
                info.maxNlc = exceptionalNlc[0]['maxNlc']
                info.minNlc = exceptionalNlc[0]['minNlc']
                info.maxprice = exceptionalNlc[0]['maxNlc']
                LATEST_UPDATED_ITEMS.append(info)
                continue
            
            skuSchemeDetails = list(get_mongo_connection().Catalog.SkuSchemeDetails.find( {'sku':info._id}).sort([('addedOn',pymongo.DESCENDING)]).limit(1))
            if len(skuSchemeDetails) > 0:
                """Sku scheme details, populate scheme amount (Recently added)"""
                
                #TODO Add start date and end date of scehems
                
                info.schemeAmount = float(skuSchemeDetails[0]['schemeAmount'])
                
            skuDealerPrices = list(get_mongo_connection().Catalog.SkuDealerPrices.find( {'sku':info._id} ) )
            if len(skuDealerPrices) > 0:
                info.dp = skuDealerPrices[0]['dp']
            skuDiscount = list(get_mongo_connection().Catalog.SkuDiscountInfo.find( {'sku':info._id} ) )
            if len(skuDiscount) > 0:
                """Sku rule found, populate max , min Discount and discount type"""
                info.maxDiscount = skuDiscount[0]['max_discount']
                info.minDiscount = skuDiscount[0]['min_discount']
                info.discountType = DISCOUNT_TYPE.get(skuDiscount[0]['discountType'].upper())
                LATEST_UPDATED_ITEMS.append(info)
                continue
            
            categoryDiscount = list(get_mongo_connection().Catalog.CategoryDiscount.find( {"$and" : [{'brand':sku['brand'].strip().upper()}, {'category_id':sku['category_id']} ]} ))
            if len(categoryDiscount) > 0:
                info.maxDiscount = categoryDiscount[0]['max_discount']
                info.minDiscount = categoryDiscount[0]['min_discount']
                info.discountType = DISCOUNT_TYPE.get(categoryDiscount[0]['discountType'].upper())
        
            LATEST_UPDATED_ITEMS.append(info)
        offset = offset + 300
    for lol in LATEST_UPDATED_ITEMS:
        print lol.__dict__
    
    
def calculateNlc():
    global LATEST_UPDATED_ITEMS
    populated = 0
    while(populated <= len(LATEST_UPDATED_ITEMS)):
        inventory_client = InventoryClient().get_client()
        for obj in LATEST_UPDATED_ITEMS[populated:300+populated]:
            if obj.maxNlc > 0 and obj.minNlc > 0:
                continue
            saholic_sku = list(get_mongo_connection().Catalog.MasterData.find( {"$and":[{'skuBundleId': obj.skuBundleId}, { 'source_id' : SOURCE_MAP.get('SAHOLIC')}] }))
            identifier = None
            if len(saholic_sku) > 0:
                identifier = saholic_sku[0]['identifier']
            if obj.discountType == DISCOUNT_TYPE.get('MRP'):
                if obj.mrp == 0:
                    """Now mrp is zero, so we have to use saholic MRP"""
                    if identifier is not None:
                        it = Item.query.filter_by(catalog_item_id=identifier).first()
                        obj.mrp = it.mrp
                if obj.mrp > 0:
                    obj.minNlc = obj.mrp - (obj.mrp * obj.maxDiscount/100) - obj.schemeAmount
                    obj.maxNlc = obj.mrp - (obj.mrp * obj.minDiscount/100) - obj.schemeAmount
                    obj.maxprice = obj.maxNlc  
            elif obj.discountType == DISCOUNT_TYPE.get('DP'):
                if obj.dp == 0:
                    """Now dp is zero, so we have to use saholic minimum dp for item"""
                    if identifier is not None:
                        it = Item.query.filter_by(catalog_item_id=identifier).first()
                        try:
                            vendorPricing = inventory_client.getAllItemPricing(it.id)
                            min_dp = min(pricing.dealerPrice for pricing in vendorPricing)
                            obj.dp = min_dp 
                        except:
                            pass
                if obj.dp > 0:
                    obj.minNlc = obj.dp - (obj.dp * obj.maxDiscount/100) - obj.schemeAmount
                    obj.maxNlc = obj.dp - (obj.dp * obj.minDiscount/100) - obj.schemeAmount
                    obj.maxprice = obj.maxNlc   
            else:
                """No rule found, use saholic min nlc as max and min R-Nlc"""
                if identifier is not None:
                    it = Item.query.filter_by(catalog_item_id=identifier).first()
                    try:
                        vendorPricing = inventory_client.getAllItemPricing(it.id)
                        min_nlc = min(pricing.nlc for pricing in vendorPricing)
                        obj.maxNlc = min_nlc
                        obj.minNlc = min_nlc
                        obj.maxprice = obj.maxNlc   
                    except:
                        pass
        populated = populated + 300
        time.sleep(10) 

def calculateNlcPoints():
    global LATEST_UPDATED_ITEMS
    for sku in LATEST_UPDATED_ITEMS:
        if sku.maxNlc and sku.minNlc:
            
            """Create map - TODO"""
            
            if sku.status == 2:
                eolWeight = .60
            else:
                eolWeight = 1.0
            if sku.category_id == 3:
                basePointPercentage = 5.0
                maxNlcPoints = 200
            elif sku.category_id == 5:
                basePointPercentage = 8.0
                maxNlcPoints = 150
            else:
                basePointPercentage = 10.0
                maxNlcPoints = 150
            discFromMinNlc = (sku.minNlc - sku.available_price)/sku.available_price *100
            discFromMaxNlc = (sku.maxNlc - sku.available_price)/sku.available_price *100
            if discFromMinNlc > 0:
                nlcPoints = 100/basePointPercentage * discFromMinNlc
            elif discFromMinNlc < 0 and discFromMaxNlc > 0:
                nlcPoints = 0
            else:
                nlcPoints = 100/basePointPercentage * discFromMinNlc
            if (min(nlcPoints,maxNlcPoints)) > 0:
                sku.nlcPoints = (min(nlcPoints,maxNlcPoints)) * eolWeight
            else:
                sku.nlcPoints = (min(nlcPoints,maxNlcPoints))
        else:
            sku.nlcPoints = 0

def commitData():
    global LATEST_UPDATED_ITEMS
    for sku in LATEST_UPDATED_ITEMS:
        #get_mongo_connection().Catalog.Deals.update({'_id':sku._id},{'$set' : sku.__dict__},upsert=True,multi=True)
        get_mongo_connection().Catalog.Deals.update({'_id':sku._id},{"$set":sku.__dict__},upsert=True)
    

def addBestSellerPoints():
    allItems = list(get_mongo_connection().Catalog.Deals.find({})) 
    for sku in allItems:
        bestSellerPoints = list(get_mongo_connection().Catalog.BestSellerPoints.find( {"$and":[{'min_rank': { "$lte": sku['rank'] } }, {'max_rank': { "$gte": sku['rank'] } } , { 'category_id' : sku['category_id'] }, { 'source_id' : sku['source_id'] }] } ))
        if len(bestSellerPoints) > 0:
            print bestSellerPoints[0]['points']
            if (bestSellerPoints[0]['points']) > 0:
                sku['bestSellerPoints'] = (bestSellerPoints[0]['points']) * bestSellerPoints[0]['weightage']
            else:
                sku['bestSellerPoints'] = (bestSellerPoints[0]['points'])
        else:
            sku['bestSellerPoints'] = -100
        #sku['totalPoints'] = sku['bestSellerPoints'] + sku['nlcPoints']
        get_mongo_connection().Catalog.Deals.update({'_id':sku['_id']},{'$set':{'bestSellerPoints':sku['bestSellerPoints']}},multi=False)
    
    for sku in allItems:
        deal_item = list(get_mongo_connection().Catalog.Deals.find({'skuBundleId':sku['skuBundleId']}).sort('bestSellerPoints',pymongo.DESCENDING).limit(1))
        sku['catalogBestSellerPoints'] = deal_item[0]['bestSellerPoints']
        sku['totalPoints'] = sku['catalogBestSellerPoints'] + sku['nlcPoints']
        get_mongo_connection().Catalog.Deals.update({'_id':sku['_id']},{'$set':{'catalogBestSellerPoints':sku['catalogBestSellerPoints'],'totalPoints':sku['totalPoints']}},multi=False)
        

def elimiateSimilarDeals():
    allItems = get_mongo_connection().Catalog.Deals.find().distinct('skuBundleId')
    for skuBundleId in allItems:
        print skuBundleId
        similarItems = list(get_mongo_connection().Catalog.Deals.find({'skuBundleId':skuBundleId}).sort([('available_price',pymongo.ASCENDING)]))
        bestPrice = float("inf")
        bestOne = None
        bestSellerPoints = 0
        toUpdate = []
        for similarItem in similarItems:
            if similarItem['in_stock'] == 0 or similarItem['maxprice'] is None or similarItem['maxprice'] < similarItem['available_price']:
                get_mongo_connection().Catalog.Deals.update({ '_id' : similarItem['_id'] }, {'$set':{'showDeal':0 }})
                continue
            if similarItem['available_price'] < bestPrice:
                bestOne = similarItem
                bestPrice = similarItem['available_price']
                bestSellerPoints = similarItem['bestSellerPoints']
            elif similarItem['available_price'] == bestPrice and bestSellerPoints < similarItem['bestSellerPoints']:
                bestOne = similarItem
                bestPrice = similarItem['available_price']
                bestSellerPoints = similarItem['bestSellerPoints']
            else:
                pass
        if bestOne is not None:
            for similarItem in similarItems:
                toUpdate.append(similarItem['_id'])
            toUpdate.remove(bestOne['_id'])
            get_mongo_connection().Catalog.Deals.update({ '_id' : bestOne['_id'] }, {'$set':{'showDeal':1 }})
        if len(toUpdate) > 0:
            get_mongo_connection().Catalog.Deals.update({ '_id' : { "$in": toUpdate } }, {'$set':{'showDeal':0 }},upsert=False, multi=True)

def main():
    populateStuff()
    calculateNlc()
    calculateNlcPoints()
    commitData()
    addBestSellerPoints()
    elimiateSimilarDeals()


if __name__=='__main__':
    main()