364 lines
14 KiB
Python
364 lines
14 KiB
Python
from regluit.core.models import Campaign, Wishlist
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from regluit.payment.models import Transaction, Receiver
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from django.contrib.auth.models import User
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from regluit.payment.parameters import *
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from regluit.payment.paypal import Pay, IPN, IPN_TYPE_PAYMENT, IPN_TYPE_PREAPPROVAL, IPN_TYPE_ADJUSTMENT, Preapproval, IPN_PAY_STATUS_COMPLETED, CancelPreapproval, IPN_SENDER_STATUS_COMPLETED
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import uuid
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import traceback
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import logging
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from decimal import Decimal as D
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logger = logging.getLogger(__name__)
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# at this point, there is no internal context and therefore, the methods of PaymentManager can be recast into static methods
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class PaymentManager( object ):
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def processIPN(self, request):
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'''
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processIPN
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Turns a request from Paypal into an IPN, and extracts info. We support 2 types of IPNs:
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1) Payment - Used for instant payments and to execute pre-approved payments
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2) Preapproval - Used for comfirmation of a preapproval
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'''
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try:
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ipn = IPN(request)
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if ipn.success():
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logger.info("Valid IPN")
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if ipn.transaction_type == IPN_TYPE_PAYMENT:
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# payment IPN
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key = ipn.key()
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t = Transaction.objects.get(reference=key)
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# The status is always one of the IPN_PAY_STATUS codes defined in paypal.py
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t.status = ipn.status
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for item in ipn.transactions:
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try:
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r = Receiver.objects.get(transaction=t, email=item['receiver'])
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logger.info(item)
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# one of the IPN_SENDER_STATUS codes defined in paypal.py
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r.status = item['status_for_sender_txn']
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r.txn_id = item['id_for_sender_txn']
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r.save()
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except:
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# Log an excecption if we have a receiver that is not found
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traceback.print_exc()
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t.save()
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elif ipn.transaction_type == IPN_TYPE_ADJUSTMENT:
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# a chargeback, reversal or refund for an existng payment
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key = ipn.key()
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t = Transaction.objects.get(reference=key)
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# The status is always one of the IPN_PAY_STATUS codes defined in paypal.py
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t.status = ipn.status
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# Reason code indicates more details of the adjustment type
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t.reason = ipn.reason_code
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elif ipn.transaction_type == IPN_TYPE_PREAPPROVAL:
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key = ipn.key()
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t = Transaction.objects.get(reference=key)
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# The status is always one of the IPN_PREAPPROVAL_STATUS codes defined in paypal.py
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t.status = ipn.status
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t.save()
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logger.info("IPN: Preapproval transaction: " + str(t.id) + " Status: " + ipn.status)
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else:
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logger.info("IPN: Unknown Transaction Type: " + ipn.transaction_type)
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else:
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logger.info("ERROR: INVALID IPN")
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logger.info(ipn.error)
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except:
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traceback.print_exc()
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def run_query(self, transaction_list, summary, pledged, authorized ):
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'''
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Generic query handler for returning summary and transaction info, see query_user, query_list and query_campaign
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'''
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if pledged:
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pledged_list = transaction_list.filter(type=PAYMENT_TYPE_INSTANT,
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status="COMPLETED")
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else:
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pledged_list = []
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if authorized:
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authorized_list = Transaction.objects.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status="ACTIVE")
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else:
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authorized_list = []
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if summary:
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pledged_amount = D('0.00')
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authorized_amount = D('0.00')
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for t in pledged_list:
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for r in t.receiver_set.all():
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if r.status == IPN_SENDER_STATUS_COMPLETED:
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# individual senders may not have been paid due to errors, and disputes/chargebacks only appear here
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pledged_amount += r.amount
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for t in authorized_list:
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authorized_amount += t.amount
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amount = pledged_amount + authorized_amount
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return amount
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else:
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return pledged_list | authorized_list
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def query_user(self, user, summary=False, pledged=True, authorized=True):
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'''
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query_user
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Returns either an amount or list of transactions for a user
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summary: if true, return a float of the total, if false, return a list of transactions
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pledged: include amounts pledged
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authorized: include amounts pre-authorized
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return value: either a float summary or a list of transactions
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'''
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transactions = Transaction.objects.filter(user=user)
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return self.run_query(transactions, summary, pledged, authorized)
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def query_campaign(self, campaign, summary=False, pledged=True, authorized=True):
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'''
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query_campaign
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Returns either an amount or list of transactions for a campaign
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summary: if true, return a float of the total, if false, return a list of transactions
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pledged: include amounts pledged
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authorized: include amounts pre-authorized
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return value: either a float summary or a list of transactions
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'''
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transactions = Transaction.objects.filter(campaign=campaign)
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return self.run_query(transactions, summary, pledged, authorized)
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def query_list(self, list, summary=False, pledged=True, authorized=True):
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'''
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query_list
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Returns either an amount or list of transactions for a list
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summary: if true, return a float of the total, if false, return a list of transactions
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pledged: include amounts pledged
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authorized: include amounts pre-authorized
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return value: either a float summary or a list of transactions
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'''
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transactions = Transaction.objects.filter(list=list)
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return self.run_query(transactions, summary, pledged, authorized)
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def execute_campaign(self, campaign):
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'''
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execute_campaign
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attempts to execute all pending transactions for a campaign.
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return value: returns a list of transactions with the status of each receiver/transaction updated
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'''
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# only allow active transactions to go through again, if there is an error, intervention is needed
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transactions = Transaction.objects.filter(campaign=campaign, status="ACTIVE")
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for t in transactions:
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# BUGBUG: Fill this in with the correct info from the campaign object
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receiver_list = [{'email':'jakace_1309677337_biz@gmail.com', 'amount':t.amount},
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{'email':'seller_1317463643_biz@gmail.com', 'amount':t.amount * 0.20}]
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self.execute_transaction(t, receiver_list)
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return transactions
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def execute_transaction(self, transaction, receiver_list):
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'''
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execute_transaction
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executes a single pending transaction.
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transaction: the transaction object to execute
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receiver_list: a list of receivers for the transaction, in this format:
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[
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{'email':'email-1', 'amount':amount1},
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{'email':'email-2', 'amount':amount2}
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]
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return value: a bool indicating the success or failure of the process. Please check the transaction status
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after the IPN has completed for full information
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'''
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if len(transaction.receiver_set.all()) > 0:
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# we are re-submitting a transaction, wipe the old receiver list
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transaction.receiver_set.all().delete()
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transaction.create_receivers(receiver_list)
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p = Pay(transaction)
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# We will update our transaction status when we receive the IPN
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if p.status() == IPN_PAY_STATUS_COMPLETED:
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logger.info("Execute Success")
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return True
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else:
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transaction.error = p.error()
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logger.info("Execute Error: " + p.error())
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return False
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def cancel(self, transaction):
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'''
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cancel
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cancels a pre-approved transaction
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return value: True if successful, false otherwise
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'''
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p = CancelPreapproval(transaction)
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if p.success():
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logger.info("Cancel Transaction " + str(transaction.id) + " Completed")
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return True
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else:
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logger.info("Cancel Transaction " + str(transaction.id) + " Failed with error: " + p.error())
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transaction.error = p.error()
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return False
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def authorize(self, currency, target, amount, campaign=None, list=None, user=None):
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'''
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authorize
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authorizes a set amount of money to be collected at a later date
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currency: a 3-letter paypal currency code, i.e. USD
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target: a defined target type, i.e. TARGET_TYPE_CAMPAIGN, TARGET_TYPE_LIST, TARGET_TYPE_NONE
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amount: the amount to authorize
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campaign: optional campaign object(to be set with TARGET_TYPE_CAMPAIGN)
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list: optional list object(to be set with TARGET_TYPE_LIST)
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user: optional user object
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return value: a tuple of the new transaction object and a re-direct url. If the process fails,
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the redirect url will be None
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'''
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t = Transaction.objects.create(amount=amount,
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type=PAYMENT_TYPE_AUTHORIZATION,
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target=target,
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currency=currency,
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secret = str(uuid.uuid1()),
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status='NONE',
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campaign=campaign,
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list=list,
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user=user
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)
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p = Preapproval(t, amount)
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if p.status() == 'Success':
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t.reference = p.paykey()
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t.save()
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logger.info("Authorize Success: " + p.next_url())
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return t, p.next_url()
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else:
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t.error = p.error()
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t.save()
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logger.info("Authorize Error: " + p.error())
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return t, None
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def pledge(self, currency, target, receiver_list, campaign=None, list=None, user=None, return_url=None, cancel_url=None):
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'''
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pledge
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Performs an instant payment
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currency: a 3-letter paypal currency code, i.e. USD
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target: a defined target type, i.e. TARGET_TYPE_CAMPAIGN, TARGET_TYPE_LIST, TARGET_TYPE_NONE
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receiver_list: a list of receivers for the transaction, in this format:
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[
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{'email':'email-1', 'amount':amount1},
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{'email':'email-2', 'amount':amount2}
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]
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campaign: optional campaign object(to be set with TARGET_TYPE_CAMPAIGN)
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list: optional list object(to be set with TARGET_TYPE_LIST)
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user: optional user object
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return value: a tuple of the new transaction object and a re-direct url. If the process fails,
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the redirect url will be None
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'''
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amount = D('0.00')
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# for chained payments, first amount is the total amount
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amount = D(receiver_list[0]['amount'])
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t = Transaction.objects.create(amount=amount,
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type=PAYMENT_TYPE_INSTANT,
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target=target,
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currency=currency,
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secret = str(uuid.uuid1()),
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status='NONE',
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campaign=campaign,
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list=list,
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user=user
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)
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t.create_receivers(receiver_list)
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p = Pay(t,return_url=return_url, cancel_url=cancel_url)
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if p.status() == 'CREATED':
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t.reference = p.paykey()
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t.save()
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logger.info("Pledge Success: " + p.next_url())
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return t, p.next_url()
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else:
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t.error = p.error()
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t.save()
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logger.info("Pledge Error: " + p.error())
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return t, None
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