Subversion Repositories SmartDukaan

import pymongo
from dtr.utils.utils import to_java_date
from datetime import datetime, timedelta
from operator import itemgetter
from dtr.utils import FlipkartScraper,NewFlipkartScraper

con = None
scraperFk = FlipkartScraper.FlipkartScraper()
scraperProductPage = NewFlipkartScraper.FlipkartProductPageScraper()

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 scrapeFlipkart():
    bestSellers = list(get_mongo_connection().Catalog.MasterData.find({'rank':{'$gt':0}}))
    for bestSeller in bestSellers: 
        flipkartBestSellers = list(get_mongo_connection().Catalog.MasterData.find({'skuBundleId':bestSeller['skuBundleId'],'source_id':2}))
        for data in flipkartBestSellers:
            if data['source_id']!=2:
                continue
            inStock = 0
            retryCount = 0
            print str(data['identifier'])
            if data['identifier'] is None or len(data['identifier'].strip())==0:
                print "continue"
                continue
            
            try:
                if data['priceUpdatedOn'] > to_java_date(datetime.now() - timedelta(minutes=5)):
                    print "sku id is already updated",data['_id'] 
                    continue
            except:
                pass
            
            
            lowestSp = 0
            inStock = 0
            try:
                if data['marketPlaceUrl']!="" or data['marketPlaceUrl'] !="http://www.flipkart.com/ps/%s"%(data['identifier']):
                    result = scraperProductPage.read(data['marketPlaceUrl'])
                    if result.get('lowestSp')!=0:
                        lowestSp = result.get('lowestSp')
                        inStock = result.get('inStock')
            except:
                print "Unable to scrape product page ",data['identifier']
            
            
            if lowestSp == 0:
                url = "http://www.flipkart.com/ps/%s"%(data['identifier'].strip())
                while(retryCount < 3):
                    try:
                        vendorsData = scraperFk.read(url)
                        fetched = True
                        break
                    except Exception as e:
                        print "***Retry count ",retryCount 
                        retryCount+=1
                        if retryCount == 3:
                            fetched = False
                        print e
                if not fetched:
                    print "Unable to fetch data after multiple tries.Continue for ",data['identifier']
                    continue
                
                sortedVendorsData = []
                sortedVendorsData = sorted(vendorsData, key=itemgetter('sellingPrice'))
                print "data",sortedVendorsData
                lowestSp, iterator = (0,)*2
                for vData in sortedVendorsData:
                    if iterator == 0:
                        lowestSp = vData['sellingPrice']
                    break
                if lowestSp > 0:
                    inStock = 1
            print lowestSp
            print inStock
            if lowestSp > 0:
                get_mongo_connection().Catalog.MasterData.update({'_id':data['_id']}, {'$set' : {'available_price':lowestSp,'updatedOn':to_java_date(datetime.now()),'priceUpdatedOn':to_java_date(datetime.now()),'in_stock':inStock}}, multi=True)
                get_mongo_connection().Catalog.Deals.update({'_id':data['_id']}, {'$set' : {'available_price':lowestSp , 'in_stock':inStock}}, multi=True)
            else:
                get_mongo_connection().Catalog.MasterData.update({'_id':data['_id']}, {'$set' : {'updatedOn':to_java_date(datetime.now()),'in_stock':inStock,'priceUpdatedOn':to_java_date(datetime.now())}}, multi=True)
                get_mongo_connection().Catalog.Deals.update({'_id':data['_id']}, {'$set' : {'in_stock':inStock}}, multi=True)
                
            try:
                recomputeDeal(data['skuBundleId'])
            except:
                print "Unable to compute deal for ",data['skuBundleId']

def recomputeDeal(skuBundleId):
    """Lets recompute deal for this bundle"""
    print "Recomputing for bundleId",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():
    scrapeFlipkart()
            
if __name__=='__main__':
    main()