from django.db import models from django.contrib.auth.models import User from regluit.core.models import Campaign, Wishlist, Premium from regluit.payment.parameters import * from decimal import Decimal import uuid class Transaction(models.Model): # type e.g., PAYMENT_TYPE_INSTANT or PAYMENT_TYPE_AUTHORIZATION -- defined in parameters.py type = models.IntegerField(default=PAYMENT_TYPE_NONE, null=False) # host: the payment processor. Named after the payment module that hosts the payment processing functions host = models.CharField(default=PAYMENT_HOST_AMAZON, max_length=32, null=False) # target: e.g, TARGET_TYPE_CAMPAIGN, TARGET_TYPE_LIST -- defined in parameters.py target = models.IntegerField(default=TARGET_TYPE_NONE, null=False) #execution: e.g. EXECUTE_TYPE_CHAINED_INSTANT, EXECUTE_TYPE_CHAINED_DELAYED, EXECUTE_TYPE_PARALLEL execution = models.IntegerField(default=EXECUTE_TYPE_NONE, null=False) # status: general status constants defined in parameters.py status = models.CharField(max_length=32, default='None', null=False) # local_status: status code specific to the payment processor local_status = models.CharField(max_length=32, default='NONE', null=True) # amount & currency -- amount of money and its currency involved for transaction amount = models.DecimalField(default=Decimal('0.00'), max_digits=14, decimal_places=2) # max 999,999,999,999.99 max_amount = models.DecimalField(default=Decimal('0.00'), max_digits=14, decimal_places=2) # max 999,999,999,999.99 currency = models.CharField(max_length=10, default='USD', null=True) # a unique ID that can be passed to PayPal to track a transaction secret = models.CharField(max_length=64, null=True) # a paykey that PayPal generates to identify this transaction pay_key = models.CharField(max_length=128, null=True) # a preapproval key that Paypal generates to identify this transaction preapproval_key = models.CharField(max_length=128, null=True) # (RY is not sure what receipt is for) receipt = models.CharField(max_length=256, null=True) # whether a Preapproval has been approved or not approved = models.NullBooleanField(null=True) # error message from a PayPal transaction error = models.CharField(max_length=256, null=True) # IPN.reason_code reason = models.CharField(max_length=64, null=True) # creation and last modified timestamps date_created = models.DateTimeField(auto_now_add=True) date_modified = models.DateTimeField(auto_now=True) # date_payment: when an attempt is made to make the primary payment date_payment = models.DateTimeField(null=True) # date_executed: when an attempt is made to send money to non-primary chained receivers date_executed = models.DateTimeField(null=True) # datetime for creation of preapproval and for its expiration date_authorized = models.DateTimeField(null=True) date_expired = models.DateTimeField(null=True) # associated User, Campaign, and Premium for this Transaction user = models.ForeignKey(User, null=True) campaign = models.ForeignKey(Campaign, null=True) premium = models.ForeignKey(Premium, null=True) # list: makes allowance for pledging against a Wishlist: not currently in use list = models.ForeignKey(Wishlist, null=True) # whether the user wants to be not listed publicly anonymous = models.BooleanField(null=False) def save(self, *args, **kwargs): if not self.secret: self.secret = str(uuid.uuid1()) super(Transaction, self).save(*args, **kwargs) # Call the "real" save() method. def __unicode__(self): return u"-- Transaction:\n \tstatus: %s\n \t amount: %s\n \treference: %s\n \terror: %s\n" % (self.status, str(self.amount), self.preapproval_key, self.error) def create_receivers(self, receiver_list): primary = True for r in receiver_list: receiver = Receiver.objects.create(email=r['email'], amount=r['amount'], currency=self.currency, status="None", primary=primary, transaction=self) primary = False def get_payment_class(self): ''' Returns the specific payment module that implements this transaction ''' if self.host == PAYMENT_HOST_NONE: return None else: mod = __import__("regluit.payment." + self.host, fromlist=[str(self.host)]) return mod class PaymentResponse(models.Model): # The API used api = models.CharField(max_length=64, null=False) # The correlation ID correlation_id = models.CharField(max_length=512, null=True) # the paypal timestamp timestamp = models.CharField(max_length=128, null=True) # extra info we want to store if an error occurs such as the response message info = models.CharField(max_length=1024, null=True) # local status specific to the api call status = models.CharField(max_length=32, null=True) transaction = models.ForeignKey(Transaction, null=False) def __unicode__(self): return u"PaymentResponse -- api: {0} correlation_id: {1} transaction: {2}".format(self.api, self.correlation_id, unicode(self.transaction)) class Receiver(models.Model): email = models.CharField(max_length=64) amount = models.DecimalField(default=Decimal('0.00'), max_digits=14, decimal_places=2) # max 999,999,999,999.99 currency = models.CharField(max_length=10) status = models.CharField(max_length=64) local_status = models.CharField(max_length=64, null=True) reason = models.CharField(max_length=64) primary = models.BooleanField() txn_id = models.CharField(max_length=64) transaction = models.ForeignKey(Transaction) def __unicode__(self): return u"Receiver -- email: {0} status: {1} transaction: {2}".format(self.email, self.status, unicode(self.transaction)) from django.db.models.signals import post_save, post_delete import regluit.payment.manager # handle any save, updates to a payment.Transaction def handle_transaction_change(sender, instance, created, **kwargs): campaign = instance.campaign if campaign: p = regluit.payment.manager.PaymentManager() amount = p.query_campaign(campaign=instance.campaign,summary=True) instance.campaign.left=instance.campaign.target - amount instance.campaign.save() return True # handle any deletes of payment.Transaction def handle_transaction_delete(sender, instance, **kwargs): campaign = instance.campaign if campaign: p = regluit.payment.manager.PaymentManager() amount = p.query_campaign(campaign=instance.campaign,summary=True) instance.campaign.left=instance.campaign.target - amount instance.campaign.save() return True post_save.connect(handle_transaction_change,sender=Transaction) post_delete.connect(handle_transaction_delete,sender=Transaction)