Subversion Repositories SmartDukaan

import urllib2

import simplejson as json

import pymongo

from dtr.utils.utils import to_java_date, getNlcPoints 

from datetime import datetime, timedelta

import time

from multiprocessing import Pool as ThreadPool

from multiprocessing import cpu_count

import optparse

from dtr.storage.MemCache import MemCache

from dtr.utils.utils import getCashBack

import traceback

from operator import itemgetter

import chardet

con = None

parser = optparse.OptionParser()

parser.add_option("-m", "--m", dest="mongoHost",

                      default="localhost",

                      type="string", help="The HOST where the mongo server is running",

                      metavar="mongo_host")

(options, args) = parser.parse_args()

mc = MemCache(options.mongoHost)

SOURCE_MAP = {'AMAZON':1,'FLIPKART':2,'SNAPDEAL':3,'SAHOLIC':4, 'SHOPCLUES.COM':5}

headers = { 

           'User-agent':'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11',

            'Accept' : 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',      

            'Accept-Language' : 'en-US,en;q=0.8',                     

            'Accept-Charset' : 'ISO-8859-1,utf-8;q=0.7,*;q=0.3'

        }

def get_mongo_connection(host=options.mongoHost, 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 populate():

    toScrapMap = {}

    bestSellers = list(get_mongo_connection().Catalog.MasterData.find({'rank':{'$gt':0}}))

    for bestSeller in bestSellers: 

        snapdealBestSellers = list(get_mongo_connection().Catalog.MasterData.find({'skuBundleId':bestSeller['skuBundleId'],'source_id':3}))

        for data in snapdealBestSellers:

            if not toScrapMap.has_key(data['_id']):

                data['dealFlag'] = 0

                data['dealType'] = 0

                data['dealPoints'] = 0

                data['manualDealThresholdPrice'] = None

                toScrapMap[data['_id']] = data

    dealFlagged = list(get_mongo_connection().Catalog.Deals.find({'source_id':3,'showDeal':1,'totalPoints':{'$gt':0}}))

    for deal in dealFlagged:

        if not toScrapMap.has_key(deal['_id']):

            data = list(get_mongo_connection().Catalog.MasterData.find({'_id':deal['_id']}))

            data[0]['dealFlag'] = 0

            data[0]['dealType'] = 0

            data[0]['dealPoints'] = 0

            data[0]['manualDealThresholdPrice'] = None

            toScrapMap[deal['_id']] = data[0]

    manualDeals = list(get_mongo_connection().Catalog.ManualDeals.find({'startDate':{'$lte':to_java_date(datetime.now())},'endDate':{'$gte':to_java_date(datetime.now())},'source_id':3}))

    for manualDeal in manualDeals:

        if not toScrapMap.has_key(manualDeal['sku']):

            data = list(get_mongo_connection().Catalog.MasterData.find({'_id':manualDeal['sku']}))

            if len(data) > 0:

                data[0]['dealFlag'] = 1

                data[0]['dealType'] = manualDeal['dealType']

                data[0]['dealPoints'] = manualDeal['dealPoints']

                data[0]['manualDealThresholdPrice'] = manualDeal['dealThresholdPrice']

                toScrapMap[manualDeal['sku']] = data[0]

        else:

            data = toScrapMap.get(manualDeal['sku'])

            data['dealFlag'] = 1

            data['dealType'] = manualDeal['dealType']

            data['dealPoints'] = manualDeal['dealPoints']

            data['manualDealThresholdPrice'] = manualDeal['dealThresholdPrice']

    for val in toScrapMap.values():

        updatePrices(val)

#    pool = ThreadPool(cpu_count() *2)

#    offset = 0

#    limit =100

#    while(offset<=len(toScrapMap.values())):

#        pool.map(updatePrices,toScrapMap.values()[offset:offset+limit])

#        offset = offset + limit

#    pool.close()

#    pool.join()

#    print "joining threads at %s"%(str(datetime.now()))

def updatePrices(data):

    if data['source_id']!=3:

        return

    print data['identifier']

    if data['identifier'] is None or len(data['identifier'].strip())==0:

        print "returning"

        return

    try:

        if data['priceUpdatedOn'] > to_java_date(datetime.now() - timedelta(minutes=5)):

            print "sku id is already updated",data['_id'] 

            return

    except:

        pass

    url="http://www.snapdeal.com/acors/json/v2/gvbps?supc=%s&catUrl=&bn=&catId=175&start=0&count=10000"%(data['identifier'].strip())

    print url

    lowestOfferPrice = 0

    instock = 0

    buyBoxPrice = 0

    isBuyBox = 1

    stock = 0

    try:

        req = urllib2.Request(url,headers=headers)

        response = urllib2.urlopen(req)

        snapdeal_data = response.read()

    except:

        print "Unable to scrape %d"%(data['_id'])

        return

    encoding =  chardet.detect(snapdeal_data)

    try:

        snapdeal_data = snapdeal_data.decode(encoding.get('encoding'))

    except:

        snapdeal_data = snapdeal_data.decode(encoding.get('latin-1'))

    try:

        vendorInfo = json.loads(snapdeal_data)

    except:

        return

    finally:

        response.close()

    try:

        buyBoxStock = vendorInfo['primaryVendor']['buyableInventory']

        if buyBoxStock >0:

            buyBoxPrice = vendorInfo['primaryVendor']['sellingPrice']

    except:

        pass

    sortedVendorsData = sorted(vendorInfo['vendors'], key=itemgetter('sellingPrice'))

    for sortedVendorData in sortedVendorsData:

        lowestOfferPrice = float(sortedVendorData['sellingPrice'])

        try:

            stock = sortedVendorData['buyableInventory']

        except:

            pass

        if stock > 0 and lowestOfferPrice > 0:

            instock = 1

            break

    if buyBoxPrice != lowestOfferPrice:

        isBuyBox = 0

    print lowestOfferPrice

    print instock

    print "Lowest Offer Price for id %d is %d , stock is %d and stock count is %d" %(data['_id'],lowestOfferPrice,instock,stock)

    print "*************"

    if instock  == 1:

        get_mongo_connection().Catalog.MasterData.update({'_id':data['_id']}, {'$set' : {'available_price':lowestOfferPrice,'updatedOn':to_java_date(datetime.now()),'priceUpdatedOn':to_java_date(datetime.now()),'in_stock':instock,'buyBoxFlag':isBuyBox}}, multi=True)

        get_mongo_connection().Catalog.Deals.update({'_id':data['_id']}, {'$set' : {'available_price':lowestOfferPrice , 'in_stock':instock,'codAvailable':data['codAvailable']}}, multi=True)

    else:

        get_mongo_connection().Catalog.MasterData.update({'_id':data['_id']}, {'$set' : {'updatedOn':to_java_date(datetime.now()),'in_stock':instock,'priceUpdatedOn':to_java_date(datetime.now()),'buyBoxFlag':isBuyBox}}, multi=True)

        get_mongo_connection().Catalog.Deals.update({'_id':data['_id']}, {'$set' : {'in_stock':instock,'codAvailable':data['codAvailable']}})

    try:

        recomputeDeal(data)

    except:

        print "Unable to compute deal for ",data['skuBundleId']

def populateNegativeDeals():

    negativeDeals = get_mongo_connection().Catalog.NegativeDeals.find().distinct('sku')

    mc.set("negative_deals", negativeDeals, 600)

def recomputePoints(item, deal):

    try:

        nlcPoints = getNlcPoints(item, deal['minNlc'], deal['maxNlc'], deal['available_price'])

    except:

        traceback.print_exc()

        nlcPoints = deal['nlcPoints']

    if item['manualDealThresholdPrice'] >= deal['available_price']:

        dealPoints = item['dealPoints']

    else:

        dealPoints = 0

    get_mongo_connection().Catalog.Deals.update({'_id':deal['_id']},{"$set":{'totalPoints':deal['totalPoints'] - deal['nlcPoints'] + nlcPoints - deal['dealPoints'] +dealPoints , 'nlcPoints': nlcPoints, 'dealPoints': dealPoints, 'manualDealThresholdPrice': item['manualDealThresholdPrice']}})

def recomputeDeal(item):

    """Lets recompute deal for this bundle"""

    print "Recomputing for bundleId %d" %(item.get('skuBundleId'))

    skuBundleId = item['skuBundleId']

    similarItems = list(get_mongo_connection().Catalog.Deals.find({'skuBundleId':skuBundleId}).sort([('available_price',pymongo.ASCENDING)]))

    bestPrice = float("inf")

    bestOne = None

    bestSellerPoints = 0

    toUpdate = []

    prepaidBestPrice = float("inf")

    prepaidBestOne = None

    prepaidBestSellerPoints = 0

    for similarItem in similarItems:

        if similarItem['_id'] == item['_id']:

            try:

                recomputePoints(item, similarItem)

            except:

                traceback.print_exc()

        if similarItem['codAvailable'] ==1:

            if mc.get("negative_deals") is None:

                populateNegativeDeals()

            if similarItem['in_stock'] == 0 or similarItem['maxprice'] is None or similarItem['maxprice'] < similarItem['available_price'] or similarItem['_id'] in mc.get("negative_deals"):

                get_mongo_connection().Catalog.Deals.update({ '_id' : similarItem['_id'] }, {'$set':{'showDeal':0, 'prepaidDeal':0 }})

                continue

            if similarItem['source_id'] == SOURCE_MAP.get('SHOPCLUES.COM') and similarItem['rank']==0:

                get_mongo_connection().Catalog.Deals.update({ '_id' : similarItem['_id'] }, {'$set':{'showDeal':0,'prepaidDeal':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

        else:

            if mc.get("negative_deals") is None:

                populateNegativeDeals()

            if similarItem['in_stock'] == 0 or similarItem['maxprice'] is None or similarItem['maxprice'] < similarItem['available_price'] or similarItem['_id'] in mc.get("negative_deals"):

                get_mongo_connection().Catalog.Deals.update({ '_id' : similarItem['_id'] }, {'$set':{'showDeal':0, 'prepaidDeal':0 }})

                continue

            if similarItem['source_id'] == SOURCE_MAP.get('SHOPCLUES.COM') and similarItem['rank']==0:

                get_mongo_connection().Catalog.Deals.update({ '_id' : similarItem['_id'] }, {'$set':{'showDeal':0,'prepaidDeal':0 }})

                continue

            if similarItem['available_price'] < prepaidBestPrice:

                prepaidBestOne = similarItem

                prepaidBestPrice = similarItem['available_price']

                prepaidBestSellerPoints = similarItem['bestSellerPoints']

            elif similarItem['available_price'] == prepaidBestPrice and prepaidBestSellerPoints < similarItem['bestSellerPoints']:

                prepaidBestOne = similarItem

                prepaidBestPrice = similarItem['available_price']

                prepaidBestSellerPoints = similarItem['bestSellerPoints']

            else:

                pass

    if bestOne is not None or prepaidBestOne is not None:

        for similarItem in similarItems:

            toUpdate.append(similarItem['_id'])

        if bestOne is not None:

            toUpdate.remove(bestOne['_id'])

            get_mongo_connection().Catalog.Deals.update({ '_id' : bestOne['_id'] }, {'$set':{'showDeal':1,'prepaidDeal':0 }})

        if prepaidBestOne is not None:

            if bestOne is not None:

                if prepaidBestOne['available_price'] < bestOne['available_price']: 

                    toUpdate.remove(prepaidBestOne['_id'])

                    get_mongo_connection().Catalog.Deals.update({ '_id' : prepaidBestOne['_id'] }, {'$set':{'showDeal':0,'prepaidDeal':1 }})

            else:

                toUpdate.remove(prepaidBestOne['_id'])

                get_mongo_connection().Catalog.Deals.update({ '_id' : prepaidBestOne['_id'] }, {'$set':{'showDeal':0,'prepaidDeal':1 }})

    if len(toUpdate) > 0:

        get_mongo_connection().Catalog.Deals.update({ '_id' : { "$in": toUpdate } }, {'$set':{'showDeal':0,'prepaidDeal':0 }},upsert=False, multi=True)

def main():

    populate()

if __name__=='__main__':

    main()