Subversion Repositories SmartDukaan

'''

Created on Jan 15, 2015

@author: amit

'''

from datetime import datetime

from dtr.config import PythonPropertyReader, PythonPropertyReader

from pprint import pprint

from pymongo.mongo_client import MongoClient

import base64

import importlib

import json

import math

import mechanize

import time

import traceback

import urllib

import urllib2

sourceMap = {1:"amazon", 2:"flipkart", 3:"snapdeal", 4:"spice", 5:"homeshop18"}

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'

        }

CASHBACK_URL = PythonPropertyReader.getConfig('CASHBACK_URL')

USER_LOOKUP_URL = PythonPropertyReader.getConfig('USER_LOOKUP_URL')

WALLET_CREDIT_URL = PythonPropertyReader.getConfig('WALLET_CREDIT_URL')

def getStore(source_id):

    #module = sourceMap[source_id]

    store = Store(source_id)

    try:

        module = importlib.import_module("dtr.sources." + sourceMap[source_id])

        store = getattr(module, "Store")(source_id)

        return store

    except:

        traceback.print_exc()

        return None

class ScrapeException(Exception):

    """Exception raised for errors in the input.

    Attributes:

        expr -- input expression in which the error occurred

        msg  -- explanation of the error

    """

    def __init__(self, expr, msg):

        self.expr = expr

        self.msg = msg

class ParseException(Exception):

    """Exception raised for errors in the input.

    Attributes:

        expr -- input expression in which the error occurred

        msg  -- explanation of the error

    """

    def __init__(self, expr, msg):

        self.expr = expr

        self.msg = msg

client = MongoClient('mongodb://localhost:27017/') 

class Store(object):

    ORDER_PLACED = 'Order Placed'

    ORDER_DELIVERED = 'Delivered'

    ORDER_SHIPPED = 'Shipped' #Lets see if we can make use of it

    ORDER_CANCELLED = 'Cancelled'

    CB_INIT = 'Waiting Confirmation'

    CB_PENDING = 'Pending'

    CB_CREDIT_IN_PROCESS = 'Credit in process'

    CB_CREDITED = 'Credited to wallet'

    CB_NA = 'Not Applicable'

    CB_APPROVED = 'Approved'

    CB_CANCELLED = 'Cancelled'

    CONF_CB_SELLING_PRICE = 0

    CONF_CB_DISCOUNTED_PRICE = 1

    def __init__(self, store_id):

        self.db = client.Dtr

        self.store_id = store_id

        self.store_name = sourceMap[store_id]

    '''

    To Settle payback for respective stores.

    Also ensures that settlement happens only for approved orders

    '''

    def getName(self):

        raise NotImplementedError

    def scrapeAffiliate(self, startDate=None, endDate=None):

        raise NotImplementedError

    def saveToAffiliate(self, offers):

        raise NotImplementedError

    def scrapeStoreOrders(self,):

        raise NotImplementedError

    def _saveToOrder(self, order):

        collection = self.db.merchantOrder

        try:

            order = collection.insert(order)

            return True 

        except Exception as e:

            return False

    def _updateToOrder(self, order):

        collection = self.db.merchantOrder

        try:

            collection.update({"orderId":order['orderId']},{"$set":order}, upsert = True)

            #merchantOder 

        except Exception as e:

            traceback.print_exc()

    def getCashbackAmount(self, productCode, amount):

        alagvar = CASHBACK_URL % (productCode,self.store_id)

        filehandle = urllib2.Request(alagvar,headers=headers)

        x= urllib2.urlopen(filehandle)

        rmap = json.loads(str(x.read()))

        if len(rmap)==0:

            return (0,0)

        else:

            if rmap['cash_back_description'] == 'PERCENTAGE':

                return (math.floor((amount * rmap['cash_back'])/100), rmap['cash_back'])

            else:

                return (rmap['cash_back'], 0)

    '''

    Parses the order for specific store

    order id, total amount, created on(now() if could not parse

    suborder id, title, quantity, unit price, expected delivery date,

    status (default would be Order placed)

    once products are identified, each suborder can then be updated

    with respective cashback.

    Possible fields to display for Not yet delivered orders are 

    Product/Quantity/Amount/Store/CashbackAmount/OrderDate/ExpectedDelivery/OrderStaus/DetailedStatus/CashbackStatus

    No need to show cancelled orders.

    CashbackStatus - NotApplicable/Pending/Approved/Cancelled/CreditedToWallet

    OrderStatus - Placed/Cancelled/Delivered

    '''

    def parseOrderRawHtml(self, orderId, subTagId, userId, rawHtml, orderSuccessUrl):

        pass

    def _updateOrdersPayBackStatus(self, searchMap, updateMap):

        searchMap['subOrders.missingAff'] = False

        updateMap['subOrders.$.missingAff'] = True

        self.db.merchantOrder.update(searchMap, { '$set': updateMap }, multi=True)

    def _getActiveOrders(self, searchMap={}, collectionMap={}):

        collection = self.db.merchantOrder

        searchMap = dict(searchMap.items()+ {"closed": False, "storeId" : self.store_id}.items()) 

        collectionMap =  dict(collectionMap.items() + {"orderSuccessUrl":1, "orderId":1,"subOrders":1, "placedOn":1}.items())

        stores = collection.find(searchMap, collectionMap)

        return [store for store in stores]

    def _getMissingOrders(self,searchMap={}):

        collection = self.db.merchantOrder

        searchMap = dict(searchMap.items()+ {"requireDetail":True}.items()) 

        orders = collection.find(searchMap)

        return list(orders)

    def _isSubOrderActive(self,order, merchantSubOrderId):

        subOrders = order.get("subOrders")

        for subOrder in subOrders:

            if merchantSubOrderId == subOrder.get("merchantSubOrderId"):

                return subOrder

        return None

def settlePayBack():

        client.Dtr.merchantOrder.update({'subOrders.cashBackStatus':Store.CB_APPROVED},{'$set':{'subOrders.$.cashBackStatus':Store.CB_CREDIT_IN_PROCESS}}, multi=True)    

        result = client.Dtr.merchantOrder\

            .aggregate([

                        {'$match':{'subOrders.cashBackStatus':Store.CB_CREDIT_IN_PROCESS}},

                        {'$unwind':"$subOrders"},

                        { 

                         '$group':{

                                   '_id':'$userId',

                                   'amount': { '$sum':'$subOrders.cashBackAmount'},

                                   }

                         }

                    ])['result']

        userAmountMap = {}

        print result

        for res in result:

            userAmountMap[res['_id']] = res['amount']

        datetimeNow = datetime.now() 

        batchId = int(time.mktime(datetimeNow.timetuple()))

        if refundToWallet(batchId, userAmountMap):

            client.Dtr.merchantOrder.update({'subOrders.cashBackStatus':Store.CB_CREDIT_IN_PROCESS},{'$set':{'subOrders.$.cashBackStatus':Store.CB_CREDITED, 'subOrders.$.batchId':batchId}}, multi=True)

            for key, value in userAmountMap.iteritems():

                client.Dtr.refund.insert({"userId": key, "batch":batchId, "userAmount":value, "timestamp":datetime.strftime(datetimeNow,"%Y-%m-%d %H:%M:%S")})

                client.Dtr.user.update({"userId":key}, {'$inc': { "credited": value}}, upsert=True)

            tprint("PayBack Settled")

        else:

            tprint("Error Occurred while running batch. Rolling Back")

            client.Dtr.merchantOrder.update({'subOrders.cashBackStatus':Store.CB_CREDIT_IN_PROCESS},{'$set':{'subOrders.$.cashBackStatus':Store.CB_APPROVED}}, multi=True)    

def refundToWallet(batchId, userAmountMap):

    base64string = base64.encodestring('%s:%s' % ("dtr", "dtr18Feb2015")).replace('\n', '')

    batchUpdateMap = {}

    try :

        saholicUserAmountMap = {}

        for key, value in userAmountMap.iteritems():

            userLookupRequest = urllib2.Request(USER_LOOKUP_URL %(key), headers=headers)

            userLookupRequest.add_header("Authorization", "Basic %s" % base64string)

            try:

                response = urllib2.urlopen(userLookupRequest).read()

                saholicUserId = json.loads(response)['account_key']

                saholicUserAmountMap[saholicUserId] = value

            except:

                tprint("Could not fetch saholic id for user : " + str(key))

                continue

        if len(saholicUserAmountMap) > 0:

            batchUpdateMap['userAmount'] = json.dumps(saholicUserAmountMap)

            batchUpdateMap['batchId'] = batchId

            request = urllib2.Request(WALLET_CREDIT_URL, headers=headers)

            data = urllib.urlencode(batchUpdateMap)

            response = urllib2.urlopen(request, data)

            return json.loads(response.read())['response']['credited']

        else:

            tprint("Nothing to Refund")

            return False

    except:

        traceback.print_exc()

        tprint("Could not batch refund")

        return False

def main():

    store = getStore(4)

    print store.getCashbackAmount('1010989', 500)

    #data = urllib.urlencode({'orderId':6000, 'amount':200})

    #request = urllib2.Request(WALLET_CREDIT_URL % (483649), headers=headers)

    #response = urllib2.urlopen(request, data)

    #print response.read()

    #settlePayBack()

###

#Settlement process is suposed to be a batch and run weekly

#It is should be running on first hour of mondays. As cron should

# Maintain a batch id.

def getBrowserObject():

    import cookielib

    br = mechanize.Browser(factory=mechanize.RobustFactory())

    cj = cookielib.LWPCookieJar()

    br.set_cookiejar(cj)

    br.set_handle_equiv(True)

    br.set_handle_redirect(True)

    br.set_handle_referer(True)

    br.set_handle_robots(False)

    br.set_debug_http(False)

    br.set_debug_redirects(False)

    br.set_debug_responses(False)

    br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)

    br.addheaders = [('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/json,application/xml;q=0.9,*/*;q=0.8'),

                     ('Accept-Encoding', 'gzip,deflate,sdch'),                  

                     ('Accept-Language', 'en-US,en;q=0.8'),                     

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

    return br

def ungzipResponse(r):

    headers = r.info()

    if headers['Content-Encoding']=='gzip':

        import gzip

        gz = gzip.GzipFile(fileobj=r, mode='rb')

        html = gz.read()

        gz.close()

        return html

def tprint(*msg):

    print datetime.now(), "-", msg

if __name__ == '__main__':

    main()