977 lines
42 KiB
Python
977 lines
42 KiB
Python
"""
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external library imports
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"""
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import logging
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import traceback
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import urllib
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import urlparse
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import uuid
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from datetime import timedelta
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from dateutil.relativedelta import relativedelta
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from decimal import Decimal as D
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from xml.dom import minidom
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"""
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django imports
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"""
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from django.conf import settings
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from django.contrib.auth.models import User
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from django.core.urlresolvers import reverse
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"""
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regluit imports
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"""
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from regluit.payment import credit
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from regluit.payment.models import Transaction, Receiver, PaymentResponse, Account
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from regluit.payment.parameters import *
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from regluit.payment.signals import transaction_charged, pledge_modified, pledge_created
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from regluit.utils.localdatetime import now
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logger = logging.getLogger(__name__)
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def append_element(doc, parent, name, text):
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element = doc.createElement(name)
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parent.appendChild(element)
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text_node = doc.createTextNode(text)
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element.appendChild(text_node)
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return element
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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, module):
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# Forward to our payment processor
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mod = __import__("regluit.payment." + module, fromlist=[str(module)])
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return mod.Processor().ProcessIPN(request)
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def update_preapproval(self, transaction):
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"""Update a transaction to hold the data from a PreapprovalDetails on that transaction"""
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t = transaction
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p = transaction.get_payment_class().PreapprovalDetails(t)
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preapproval_status = {'id':t.id, 'key':t.preapproval_key}
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if p.error() or not p.success():
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logger.info("Error retrieving preapproval details for transaction %d" % t.id)
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preapproval_status["error"] = "An error occurred while verifying this transaction, see server logs for details"
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else:
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# Check the transaction status
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if t.status != p.status:
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preapproval_status["status"] = {'ours':t.status, 'theirs':p.status}
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t.status = p.status
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t.local_status = p.local_status
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t.save()
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# check the currency code
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if t.currency != p.currency:
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preapproval_status["currency"] = {'ours':t.currency, 'theirs':p.currency}
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t.currency = p.currency
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t.save()
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# Check the amount
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if t.max_amount != D(p.amount):
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preapproval_status["amount"] = {'ours':t.max_amount, 'theirs':p.amount}
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t.max_amount = p.amount
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t.save()
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# Check approved
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if t.approved != p.approved:
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preapproval_status["approved"] = {'ours':t.approved, 'theirs':p.approved}
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t.approved = p.approved
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t.save()
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# In amazon FPS, we may not have a pay_key via the return URL, update here
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try:
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if t.pay_key != p.pay_key:
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preapproval_status['pay_key'] = {'ours':t.pay_key, 'theirs':p.pay_key}
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t.pay_key = p.pay_key
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t.save()
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except:
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# No problem, p.pay_key is not defined for paypal function
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blah = "blah"
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return preapproval_status
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def update_payment(self, transaction):
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"""Update a transaction to hold the data from a PaymentDetails on that transaction"""
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t = transaction
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payment_status = {'id':t.id}
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p = transaction.get_payment_class().PaymentDetails(t)
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if p.error() or not p.success():
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logger.info("Error retrieving payment details for transaction %d" % t.id)
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payment_status['error'] = "An error occurred while verifying this transaction, see server logs for details"
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else:
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# Check the transaction status
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if t.status != p.status:
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payment_status['status'] = {'ours': t.status, 'theirs': p.status}
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t.status = p.status
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t.local_status = p.local_status
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t.save()
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receivers_status = []
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for r in p.transactions:
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# This is only supported for paypal at this time
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try:
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receiver = Receiver.objects.get(transaction=t, email=r['email'])
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receiver_status = {'email':r['email']}
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logger.info(r)
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logger.info(receiver)
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# Check for updates on each receiver's status. Note that unprocessed delayed chained payments
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# will not have a status code or txn id code
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if receiver.status != r['status']:
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receiver_status['status'] = {'ours': receiver.status, 'theirs': r['status']}
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receiver.status = r['status']
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receiver.save()
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if receiver.txn_id != r['txn_id']:
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receiver_status['txn_id'] = {'ours':receiver.txn_id, 'theirs':r['txn_id']}
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receiver.txn_id = r['txn_id']
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receiver.save()
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except:
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traceback.print_exc()
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if not set(["status","txn_id"]).isdisjoint(receiver_status.keys()):
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receivers_status.append(receiver_status)
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if len(receivers_status):
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payment_status["receivers"] = receivers_status
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return payment_status
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def checkStatus(self, past_days=None, transactions=None):
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'''
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Run through all pay transactions and verify that their current status is as we think.
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Allow for a list of transactions to be passed in or for the method to check on all transactions within the
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given past_days
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'''
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DEFAULT_DAYS_TO_CHECK = 3
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status = {'payments':[], 'preapprovals':[]}
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# look at all PAY transactions for stated number of past days; if past_days is not int, get all Transaction
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# only PAY transactions have date_payment not None
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if transactions is None:
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if past_days is None:
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past_days = DEFAULT_DAYS_TO_CHECK
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try:
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ref_date = now() - relativedelta(days=int(past_days))
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payment_transactions = Transaction.objects.filter(date_payment__gte=ref_date)
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except:
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ref_date = now()
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payment_transactions = Transaction.objects.filter(date_payment__isnull=False)
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logger.info(payment_transactions)
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# Now look for preapprovals that have not been paid and check on their status
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preapproval_transactions = Transaction.objects.filter(date_authorized__gte=ref_date, date_payment=None, type=PAYMENT_TYPE_AUTHORIZATION)
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logger.info(preapproval_transactions)
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transactions = payment_transactions | preapproval_transactions
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for t in transactions:
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# deal with preapprovals
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if t.date_payment is None:
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preapproval_status = self.update_preapproval(t)
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logger.info("transaction: {0}, preapproval_status: {1}".format(t, preapproval_status))
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if not set(['status', 'currency', 'amount', 'approved']).isdisjoint(set(preapproval_status.keys())):
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status["preapprovals"].append(preapproval_status)
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# update payments
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else:
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payment_status = self.update_payment(t)
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if not set(["status", "receivers"]).isdisjoint(payment_status.keys()):
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status["payments"].append(payment_status)
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# Clear out older, duplicate preapproval transactions
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cleared_list = []
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for p in transactions:
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# pick out only the preapprovals
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if p.date_payment is None and p.type == PAYMENT_TYPE_AUTHORIZATION and p.status == TRANSACTION_STATUS_ACTIVE and p not in cleared_list:
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# keep only the newest transaction for this user and campaign
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user_transactions_for_campaign = Transaction.objects.filter(user=p.user, status=TRANSACTION_STATUS_ACTIVE, campaign=p.campaign).order_by('-date_authorized')
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if len(user_transactions_for_campaign) > 1:
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logger.info("Found %d active transactions for campaign" % len(user_transactions_for_campaign))
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self.cancel_related_transaction(user_transactions_for_campaign[0], status=TRANSACTION_STATUS_ACTIVE, campaign=transactions[0].campaign)
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cleared_list.extend(user_transactions_for_campaign)
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# Note, we may need to call checkstatus again here
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return status
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def run_query(self, transaction_list, summary=True, campaign_total=False, pledged=False, authorized=False, incomplete=False, completed=False, pending=False, error=False, failed=False, **kwargs):
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'''
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Generic query handler for returning summary and transaction info, see query_user and query_campaign
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campaign_total=True includes all payment types which should count towards campaign total
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'''
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if campaign_total:
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# must double check when adding Paypal or other
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# return only ACTIVE transactions with approved=True
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list = transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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approved=True).exclude(status=TRANSACTION_STATUS_CANCELED)
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list = list | transaction_list.filter(type=PAYMENT_TYPE_INSTANT,
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status=TRANSACTION_STATUS_COMPLETE)
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else:
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list = Transaction.objects.none()
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if pledged:
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list = list | transaction_list.filter(type=PAYMENT_TYPE_INSTANT,
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status=TRANSACTION_STATUS_COMPLETE)
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if authorized:
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# return only ACTIVE transactions with approved=True
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list = list | transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_ACTIVE,
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approved=True)
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if incomplete:
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list = list | transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_INCOMPLETE)
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if completed:
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list = list | transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_COMPLETE)
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if pending:
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list = list | transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_PENDING)
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if error:
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list = list | transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_ERROR)
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if failed:
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list = list | transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_FAILED)
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if summary:
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amount = D('0.00')
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for t in list:
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amount += t.amount
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return amount
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else:
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return list
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def query_user(self, user, **kwargs):
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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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return value: either a float summary or a list of transactions
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Note: this method appears to be unused.
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'''
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transactions = Transaction.objects.filter(user=user)
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return self.run_query(transactions, **kwargs)
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def query_campaign(self, campaign, **kwargs ):
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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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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, **kwargs)
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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=TRANSACTION_STATUS_ACTIVE)
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results = []
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for t in transactions:
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#
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# Currently receivers are only used for paypal, so it is OK to leave the paypal info here
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#
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receiver_list = [{'email':settings.PAYPAL_GLUEJAR_EMAIL, 'amount':t.amount},
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{'email':campaign.paypal_receiver, 'amount':D(t.amount) * (D('1.00') - D(str(settings.GLUEJAR_COMMISSION)))}]
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try:
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self.execute_transaction(t, receiver_list)
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except Exception as e:
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results.append((t, e))
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else:
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results.append((t, None))
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return results
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def finish_campaign(self, campaign):
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'''
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finish_campaign
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attempts to execute all remaining payment to non-primary receivers
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This is currently only supported for paypal
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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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# QUESTION: to figure out which transactions are in a state in which the payment to the primary recipient is done but not to secondary recipient
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# Consider two possibilities: status=IPN_PAY_STATUS_INCOMPLETE or execution = EXECUTE_TYPE_CHAINED_DELAYED
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# which one? Let's try the second one
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# only allow incomplete transactions to go through again, if there is an error, intervention is needed
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transactions = Transaction.objects.filter(campaign=campaign, execution=EXECUTE_TYPE_CHAINED_DELAYED)
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for t in transactions:
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result = self.finish_transaction(t)
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# TO DO: update campaign status
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return transactions
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def cancel_campaign(self, campaign, reason="UNSUCCESSFUL CAMPAIGN"):
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'''
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cancel_campaign
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attempts to cancel active preapprovals related to the 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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transactions = Transaction.objects.filter(campaign=campaign, status=TRANSACTION_STATUS_ACTIVE)
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for t in transactions:
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result = self.cancel_transaction(t)
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if result:
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t.reason = reason
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t.save()
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return transactions
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def finish_transaction(self, transaction):
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'''
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finish_transaction
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calls the paypal API to execute payment to non-primary receivers
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transaction: the transaction we want to complete
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'''
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if transaction.execution != EXECUTE_TYPE_CHAINED_DELAYED:
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logger.error("FinishTransaction called with invalid execution type")
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return False
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# mark this transaction as executed
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transaction.date_executed = now()
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transaction.save()
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p = transaction.get_payment_class().Finish(transaction)
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# Create a response for this
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envelope = p.envelope()
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if envelope:
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correlation = p.correlation_id()
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timestamp = p.timestamp()
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r = PaymentResponse.objects.create(api=p.url,
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correlation_id = correlation,
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timestamp = timestamp,
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info = p.raw_response,
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transaction=transaction)
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if p.success() and not p.error():
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logger.info("finish_transaction Success")
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return True
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else:
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transaction.error = p.error_string()
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transaction.save()
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logger.info("finish_transaction error " + p.error_string())
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return False
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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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# Mark as payment attempted so we will poll this periodically for status changes
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transaction.set_payment()
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# here's where we need to add handling for credit transactions in pledge campaigns
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p = transaction.get_payment_class().Execute(transaction)
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# Create a response for this
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envelope = p.envelope()
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if envelope:
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correlation = p.correlation_id()
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timestamp = p.timestamp()
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r = PaymentResponse.objects.create(api=p.api(),
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correlation_id = correlation,
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timestamp = timestamp,
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info = p.raw_response,
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transaction=transaction)
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# We will update our transaction status when we receive the IPN
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if p.success() and not p.error():
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transaction.pay_key = p.key()
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transaction.save()
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return True
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else:
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transaction.error = p.error_string()
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transaction.save()
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logger.info("execute_transaction Error: " + p.error_string())
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return False
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def cancel_transaction(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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# does this transaction explicity require preapprovals?
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requires_explicit_preapprovals = transaction.get_payment_class().requires_explicit_preapprovals
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if requires_explicit_preapprovals:
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p = transaction.get_payment_class().CancelPreapproval(transaction)
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# Create a response for this
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envelope = p.envelope()
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if envelope:
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correlation = p.correlation_id()
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timestamp = p.timestamp()
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r = PaymentResponse.objects.create(api=p.url,
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correlation_id = correlation,
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timestamp = timestamp,
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info = p.raw_response,
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transaction=transaction)
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if p.success() and not p.error():
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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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transaction.error = p.error_string()
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transaction.save()
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logger.info("Cancel Transaction " + str(transaction.id) + " Failed with error: " + p.error_string())
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return False
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else:
|
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# if no explicit preapproval required, we just have to mark the transaction as cancelled.
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transaction.status = TRANSACTION_STATUS_CANCELED
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transaction.save()
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return True
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|
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def authorize(self, transaction, expiry= None, return_url=None, paymentReason="unglue.it Pledge", modification=False):
|
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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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return_url: url to redirect supporter to after a successful transaction
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paymentReason: a memo line that will show up in the unglue.it accounting
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|
modification: whether this authorize call is part of a modification of an existing pledge
|
|
|
|
return value: a tuple of the new transaction object and a re-direct url. If the process fails,
|
|
the redirect url will be None
|
|
|
|
'''
|
|
|
|
if transaction.host == PAYMENT_HOST_NONE:
|
|
#TODO send user to select a payment processor -- for now, set to a system setting
|
|
transaction.host = settings.PAYMENT_PROCESSOR
|
|
|
|
# we might want to not allow for a return_url to be passed in but calculated
|
|
# here because we have immediate access to the Transaction object.
|
|
|
|
|
|
if return_url is None:
|
|
return_path = "{0}?{1}".format(reverse('pledge_complete'),
|
|
urllib.urlencode({'tid':transaction.id}))
|
|
return_url = urlparse.urljoin(settings.BASE_URL_SECURE, return_path)
|
|
|
|
p = transaction.get_payment_class().Preapproval(transaction, transaction.max_amount, expiry, return_url=return_url, paymentReason=paymentReason)
|
|
|
|
# Create a response for this
|
|
envelope = p.envelope()
|
|
|
|
if envelope:
|
|
r = PaymentResponse.objects.create(api=p.url,
|
|
correlation_id = p.correlation_id(),
|
|
timestamp = p.timestamp(),
|
|
info = p.raw_response,
|
|
transaction=transaction)
|
|
|
|
if p.success() and not p.error():
|
|
transaction.preapproval_key = p.key()
|
|
transaction.save()
|
|
|
|
# it make sense for the payment processor library to calculate next_url when
|
|
# user is redirected there. But if no redirection is required, send user
|
|
# straight on to the return_url
|
|
url = p.next_url()
|
|
|
|
if url is None:
|
|
url = return_url
|
|
|
|
logger.info("Authorize Success: " + url if url is not None else '')
|
|
|
|
# modification and initial pledge use different notification templates --
|
|
# decide which to send
|
|
# we need to fire notifications at the first point at which we are sure
|
|
# that the transaction has successfully completed; triggering notifications
|
|
# when the transaction is initiated risks sending notifications on transactions
|
|
# that for whatever reason fail. will need other housekeeping to handle those.
|
|
# sadly this point is not yet late enough in the process -- needs to be moved
|
|
# until after we are certain.
|
|
|
|
if not modification:
|
|
# BUGBUG:
|
|
# send the notice here for now
|
|
# this is actually premature since we're only about to send the user off to the payment system to
|
|
# authorize a charge
|
|
pledge_created.send(sender=self, transaction=transaction)
|
|
|
|
return transaction, url
|
|
|
|
|
|
else:
|
|
transaction.error = p.error_string()
|
|
transaction.save()
|
|
logger.info("Authorize Error: " + p.error_string())
|
|
return transaction, None
|
|
|
|
def charge(self, transaction, return_url=None, paymentReason="unglue.it Purchase", token = None):
|
|
'''
|
|
charge
|
|
|
|
immediately attempt to collect on transaction
|
|
|
|
return_url: url to redirect supporter to after a successful transaction
|
|
paymentReason: a memo line that will show up in our stripe accounting
|
|
|
|
return value: a tuple of the new transaction object and a re-direct url. If the process fails,
|
|
the redirect url will be None
|
|
|
|
'''
|
|
|
|
if transaction.host == PAYMENT_HOST_NONE:
|
|
#TODO send user to select a payment processor -- for now, set to a system setting
|
|
transaction.host = settings.PAYMENT_PROCESSOR
|
|
|
|
# we might want to not allow for a return_url to be passed in but calculated
|
|
# here because we have immediate access to the Transaction object.
|
|
charge_amount = transaction.needed_amount
|
|
if transaction.credit_amount > 0 :
|
|
success = credit.pay_transaction(transaction, transaction.user, transaction.campaign.user_to_pay, transaction.credit_amount)
|
|
if not success: #shouldn't happen
|
|
logger.error('could not use credit for transaction %s' % transaction.id)
|
|
charge_amount =transaction.max_amount
|
|
p = transaction.get_payment_class().Pay(transaction, amount=charge_amount, return_url=return_url, paymentReason=paymentReason, token=token)
|
|
|
|
|
|
if p.success() and not p.error():
|
|
transaction.preapproval_key = p.key()
|
|
transaction.execution = EXECUTE_TYPE_INSTANT
|
|
transaction.set_executed() # also does the save
|
|
|
|
# it make sense for the payment processor library to calculate next_url when
|
|
# user is redirected there. But if no redirection is required, send user
|
|
# straight on to the return_url
|
|
url = p.next_url()
|
|
|
|
if url is None:
|
|
url = return_url
|
|
|
|
logger.info("Pay Success: " + url if url is not None else '')
|
|
|
|
return transaction, url
|
|
|
|
|
|
else:
|
|
transaction.error = p.error_string()
|
|
transaction.save()
|
|
logger.info("Pay Error: " + p.error_string())
|
|
return transaction, None
|
|
|
|
|
|
|
|
def process_transaction(self, currency, amount, host=PAYMENT_HOST_NONE, campaign=None, user=None,
|
|
return_url=None, paymentReason="unglue.it Pledge", pledge_extra=None,
|
|
modification=False):
|
|
'''
|
|
process
|
|
|
|
saves and processes a proposed transaction; decides if the transaction should be processed immediately.
|
|
|
|
currency: a 3-letter currency code, i.e. USD
|
|
amount: the amount to authorize
|
|
host: the name of the processing module; if none, send user back to decide!
|
|
campaign: required campaign object
|
|
user: optional user object
|
|
return_url: url to redirect supporter to after a successful transaction
|
|
paymentReason: a memo line that will show up in the Payer's Amazon (and Paypal?) account
|
|
modification: whether this authorize call is part of a modification of an existing pledge
|
|
pledge_extra: extra pledge stuff
|
|
|
|
return value: a tuple of the new transaction object and a re-direct url. If the process fails,
|
|
the redirect url will be None
|
|
'''
|
|
# set the expiry date based on the campaign deadline
|
|
if campaign and campaign.deadline:
|
|
expiry = campaign.deadline + timedelta(days=settings.PREAPPROVAL_PERIOD_AFTER_CAMPAIGN)
|
|
else:
|
|
expiry = now() + timedelta(days=settings.PREAPPROVAL_PERIOD_AFTER_CAMPAIGN)
|
|
|
|
t = Transaction.create(amount=0,
|
|
host = host,
|
|
max_amount=amount,
|
|
currency=currency,
|
|
campaign=campaign,
|
|
user=user,
|
|
pledge_extra=pledge_extra
|
|
)
|
|
t.save()
|
|
# does user have enough credit to transact now?
|
|
if user.is_authenticated() and user.credit.available >= amount :
|
|
# YES!
|
|
return_path = "{0}?{1}".format(reverse('pledge_complete'),
|
|
urllib.urlencode({'tid':t.id}))
|
|
return_url = urlparse.urljoin(settings.BASE_URL_SECURE, return_path)
|
|
if campaign.is_pledge() :
|
|
success = credit.pledge_transaction(t,user,amount)
|
|
if success:
|
|
pledge_created.send(sender=self, transaction=t)
|
|
else:
|
|
success = credit.pay_transaction(t,user,t.campaign.user_to_pay, amount)
|
|
if success:
|
|
t.amount = amount
|
|
t.host = PAYMENT_HOST_CREDIT
|
|
t.execution = EXECUTE_TYPE_INSTANT
|
|
t.date_executed = now()
|
|
t.status = TRANSACTION_STATUS_COMPLETE
|
|
t.save()
|
|
transaction_charged.send(sender=self, transaction=t)
|
|
if success:
|
|
return t, return_url
|
|
else:
|
|
# shouldn't happen
|
|
logger.error('could not use credit for transaction %s' % t.id)
|
|
|
|
|
|
# send user to choose payment path
|
|
return t, reverse('fund', args=[t.id])
|
|
|
|
|
|
def cancel_related_transaction(self, transaction, status=TRANSACTION_STATUS_ACTIVE, campaign=None):
|
|
'''
|
|
Cancels any other similar status transactions for the same campaign. Used with modify code
|
|
|
|
Returns the number of transactions successfully canceled
|
|
'''
|
|
|
|
related_transactions = Transaction.objects.filter(status=status, user=transaction.user)
|
|
|
|
if len(related_transactions) == 0:
|
|
return 0
|
|
|
|
if campaign:
|
|
related_transactions = related_transactions.filter(campaign=campaign)
|
|
|
|
canceled = 0
|
|
|
|
for t in related_transactions:
|
|
|
|
if t.id == transaction.id:
|
|
# keep our transaction
|
|
continue
|
|
|
|
if self.cancel_transaction(t):
|
|
canceled = canceled + 1
|
|
# send notice about modification of transaction
|
|
if transaction.amount > t.amount:
|
|
# this should be the only one that happens
|
|
up_or_down = "increased"
|
|
elif transaction.amount < t.amount:
|
|
# we shouldn't expect any case in which this happens
|
|
up_or_down = "decreased"
|
|
else:
|
|
# we shouldn't expect any case in which this happens
|
|
up_or_down = None
|
|
|
|
pledge_modified.send(sender=self, transaction=transaction, up_or_down=up_or_down)
|
|
else:
|
|
logger.error("Failed to cancel transaction {0} for related transaction {1} ".format(t, transaction))
|
|
|
|
return canceled
|
|
|
|
def modify_transaction(self, transaction, amount, expiry=None, pledge_extra=None,
|
|
return_url=None, nevermind_url=None, paymentReason=None):
|
|
'''
|
|
modify
|
|
|
|
Modifies a transaction.
|
|
2 main situations: if the new amount is less than max_amount, no need to go out to PayPal again
|
|
if new amount is greater than max_amount...need to go out and get new approval.
|
|
to start with, we can use the standard pledge_complete, pledge_cancel machinery
|
|
might have to modify the pledge_complete, pledge_cancel because the messages are going to be
|
|
different because we're modifying a pledge rather than a new one.
|
|
|
|
amount: the new amount
|
|
expiry: the new expiration date, or if none the current expiration date will be used
|
|
return_url: the return URL after the preapproval(if needed)
|
|
paymentReason: a memo line that will show up in the Payer's Amazon (and Paypal?) account
|
|
|
|
return value: True if successful, False otherwise. An optional second parameter for the forward URL if a new authorhization is needed
|
|
'''
|
|
|
|
logger.info("transaction.id: {0}, amount:{1}".format(transaction.id, amount))
|
|
if amount < transaction.amount:
|
|
up_or_down = "decreased"
|
|
elif amount > transaction.amount:
|
|
up_or_down = "increased"
|
|
else:
|
|
up_or_down = "modified"
|
|
|
|
|
|
# if expiry is None, use the existing value
|
|
if expiry is None:
|
|
expiry = transaction.date_expired
|
|
|
|
# does this transaction explicity require preapprovals?
|
|
|
|
requires_explicit_preapprovals = transaction.get_payment_class().requires_explicit_preapprovals
|
|
|
|
if transaction.type != PAYMENT_TYPE_AUTHORIZATION:
|
|
logger.info("Error, attempt to modify an invalid transaction type")
|
|
return False, None
|
|
|
|
# Can only modify an active, pending transaction. If it is completed, we need to do a refund. If it is incomplete,
|
|
# then an IPN may be pending and we cannot touch it
|
|
if transaction.status != TRANSACTION_STATUS_ACTIVE:
|
|
logger.info("Error, attempt to modify a transaction that is not active")
|
|
return False, None
|
|
|
|
if transaction.host == PAYMENT_HOST_CREDIT:
|
|
# does user have enough credit to pledge now?
|
|
if transaction.user.credit.available >= amount-transaction.amount :
|
|
# YES!
|
|
transaction.set_pledge_extra(pledge_extra)
|
|
credit.pledge_transaction(transaction,transaction.user,amount)
|
|
return_path = "{0}?{1}".format(reverse('pledge_complete'),
|
|
urllib.urlencode({'tid':transaction.id}))
|
|
return_url = urlparse.urljoin(settings.BASE_URL_SECURE, return_path)
|
|
|
|
logger.info("Updated amount of transaction to %f" % amount)
|
|
pledge_modified.send(sender=self, transaction=transaction,up_or_down=up_or_down)
|
|
return transaction, return_url
|
|
else:
|
|
# cancel old transaction, send user to choose new payment path
|
|
# set the expiry date based on the campaign deadline
|
|
expiry = transaction.deadline_or_now + timedelta( days=settings.PREAPPROVAL_PERIOD_AFTER_CAMPAIGN )
|
|
t = Transaction.create(amount=0,
|
|
max_amount=amount,
|
|
currency=transaction.currency,
|
|
status=TRANSACTION_STATUS_MODIFIED,
|
|
campaign=transaction.campaign,
|
|
user=transaction.user,
|
|
pledge_extra=pledge_extra
|
|
)
|
|
t.save()
|
|
credit.Processor.CancelPreapproval(transaction)
|
|
return t, reverse('fund_%s'%campaign.type, args=[t.id])
|
|
|
|
elif requires_explicit_preapprovals and (amount > transaction.max_amount or expiry != transaction.date_expired):
|
|
|
|
# set the expiry date based on the campaign deadline
|
|
expiry = transaction.deadline_or_now + timedelta( days=settings.PREAPPROVAL_PERIOD_AFTER_CAMPAIGN )
|
|
|
|
# Start a new transaction for the new amount
|
|
t = Transaction.create(amount=amount,
|
|
max_amount=amount,
|
|
host=transaction.host,
|
|
currency=transaction.currency,
|
|
status=TRANSACTION_STATUS_CREATED,
|
|
campaign=transaction.campaign,
|
|
user=transaction.user,
|
|
pledge_extra=pledge_extra
|
|
)
|
|
t.save()
|
|
t, url = self.authorize(transaction,
|
|
expiry=expiry if expiry else transaction.date_expired,
|
|
return_url=return_url,
|
|
paymentReason=paymentReason,
|
|
modification=True
|
|
)
|
|
|
|
if t and url:
|
|
# Need to re-direct to approve the transaction
|
|
logger.info("New authorization needed, redirection to url %s" % url)
|
|
|
|
# Do not cancel the transaction here, wait until we get confirmation that the transaction is complete
|
|
# then cancel all other active transactions for this campaign
|
|
#self.cancel_transaction(transaction)
|
|
|
|
# while it would seem to make sense to send a pledge notification change here
|
|
# if we do, we will also send notifications when we initiate but do not
|
|
# successfully complete a pledge modification
|
|
|
|
return True, url
|
|
else:
|
|
# a problem in authorize
|
|
logger.info("Error, unable to start a new authorization")
|
|
# should we send a pledge_modified signal with state="failed" and a
|
|
# corresponding notification to the user? that would go here.
|
|
return False, None
|
|
|
|
elif (requires_explicit_preapprovals and amount <= transaction.max_amount) or (not requires_explicit_preapprovals):
|
|
# Update transaction but leave the preapproval alone
|
|
transaction.amount = amount
|
|
transaction.set_pledge_extra(pledge_extra)
|
|
|
|
transaction.save()
|
|
logger.info("Updated amount of transaction to %f" % amount)
|
|
# when modifying pledges happens immediately and only within our
|
|
# db, we don't have to wait until we hear back to be assured of
|
|
# success; send the notification immediately
|
|
pledge_modified.send(sender=self, transaction=transaction, up_or_down=up_or_down)
|
|
return True, None
|
|
else:
|
|
# this shouldn't happen
|
|
return False, None
|
|
|
|
|
|
def refund_transaction(self, transaction):
|
|
'''
|
|
refund
|
|
|
|
Refunds a transaction. The money for the transaction may have gone to a number of places. We can only
|
|
refund money that is in our account
|
|
|
|
return value: True if successful, false otherwise
|
|
'''
|
|
|
|
# First check if a payment has been made. It is possible that some of the receivers may be incomplete
|
|
# We need to verify that the refund API will cancel these
|
|
if transaction.status != TRANSACTION_STATUS_COMPLETE:
|
|
logger.info("Refund Transaction failed, invalid transaction status")
|
|
return False
|
|
|
|
p = transaction.get_payment_class().RefundPayment(transaction)
|
|
|
|
# Create a response for this
|
|
envelope = p.envelope()
|
|
|
|
if envelope:
|
|
|
|
correlation = p.correlation_id()
|
|
timestamp = p.timestamp()
|
|
|
|
r = PaymentResponse.objects.create(api=p.url,
|
|
correlation_id = correlation,
|
|
timestamp = timestamp,
|
|
info = p.raw_response,
|
|
transaction=transaction)
|
|
|
|
if p.success() and not p.error():
|
|
logger.info("Refund Transaction " + str(transaction.id) + " Completed")
|
|
return True
|
|
|
|
else:
|
|
transaction.error = p.error_string()
|
|
transaction.save()
|
|
logger.info("Refund Transaction " + str(transaction.id) + " Failed with error: " + p.error_string())
|
|
return False
|
|
|
|
def make_account(self, user=None, host=None, token=None):
|
|
"""delegate to a specific payment module the task of creating a payment account"""
|
|
|
|
mod = __import__("regluit.payment." + host, fromlist=[host])
|
|
return mod.Processor().make_account(user=user, token=token)
|
|
|
|
def retrieve_accounts(self, user, host, include_deactivated=False):
|
|
"""return any accounts that match user, host -- only active ones by default"""
|
|
|
|
if include_deactivated:
|
|
return Account.objects.filter(user=user, host=host)
|
|
else:
|
|
return Account.objects.filter(user=user, host=host, date_deactivated__isnull=True)
|
|
|
|
|