from django.conf import settings
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from django.contrib.auth.models import User
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from django.db import models
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from django.template.loader import render_to_string
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if settings.USE_PAYMENTS:
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import braintree
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else:
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# hc.payments tests mock this object, so tests should
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# still be able to run:
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braintree = None
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ADDRESS_KEYS = ("company", "street_address",
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"extended_address", "locality", "region", "postal_code",
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"country_code_alpha2")
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class SubscriptionManager(models.Manager):
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def for_user(self, user):
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sub, created = Subscription.objects.get_or_create(user_id=user.id)
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return sub
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def by_transaction(self, transaction_id):
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try:
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tx = braintree.Transaction.find(transaction_id)
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except braintree.exceptions.NotFoundError:
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return None, None
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try:
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sub = self.get(customer_id=tx.customer_details.id)
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except Subscription.DoesNotExist:
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return None, None
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return sub, tx
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def by_braintree_webhook(self, request):
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sig = str(request.POST["bt_signature"])
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payload = str(request.POST["bt_payload"])
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doc = braintree.WebhookNotification.parse(sig, payload)
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assert doc.kind == "subscription_charged_successfully"
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sub = self.get(subscription_id=doc.subscription.id)
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return sub, doc.subscription.transactions[0]
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class Subscription(models.Model):
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user = models.OneToOneField(User, models.CASCADE, blank=True, null=True)
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customer_id = models.CharField(max_length=36, blank=True)
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payment_method_token = models.CharField(max_length=35, blank=True)
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subscription_id = models.CharField(max_length=10, blank=True)
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plan_id = models.CharField(max_length=10, blank=True)
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plan_name = models.CharField(max_length=50, blank=True)
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address_id = models.CharField(max_length=2, blank=True)
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send_invoices = models.BooleanField(default=True)
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invoice_email = models.EmailField(blank=True)
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objects = SubscriptionManager()
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@property
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def payment_method(self):
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if not self.payment_method_token:
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return None
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if not hasattr(self, "_pm"):
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self._pm = braintree.PaymentMethod.find(self.payment_method_token)
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return self._pm
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def _get_braintree_subscription(self):
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if not hasattr(self, "_sub"):
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self._sub = braintree.Subscription.find(self.subscription_id)
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return self._sub
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def get_client_token(self):
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return braintree.ClientToken.generate({
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"customer_id": self.customer_id
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})
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def update_payment_method(self, nonce):
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# Create customer record if it does not exist:
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if not self.customer_id:
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result = braintree.Customer.create({
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"email": self.user.email
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})
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if not result.is_success:
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return result
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self.customer_id = result.customer.id
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self.save()
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# Create payment method
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result = braintree.PaymentMethod.create({
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"customer_id": self.customer_id,
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"payment_method_nonce": nonce,
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"options": {"make_default": True}
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})
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if not result.is_success:
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return result
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self.payment_method_token = result.payment_method.token
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self.save()
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# Update an existing subscription to use this payment method
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if self.subscription_id:
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result = braintree.Subscription.update(self.subscription_id, {
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"payment_method_token": self.payment_method_token
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})
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if not result.is_success:
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return result
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def update_address(self, post_data):
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# Create customer record if it does not exist:
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if not self.customer_id:
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result = braintree.Customer.create({
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"email": self.user.email
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})
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if not result.is_success:
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return result
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self.customer_id = result.customer.id
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self.save()
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payload = {key: str(post_data.get(key)) for key in ADDRESS_KEYS}
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if self.address_id:
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result = braintree.Address.update(self.customer_id,
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self.address_id,
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payload)
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else:
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payload["customer_id"] = self.customer_id
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result = braintree.Address.create(payload)
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if result.is_success:
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self.address_id = result.address.id
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self.save()
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if not result.is_success:
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return result
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def setup(self, plan_id):
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result = braintree.Subscription.create({
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"payment_method_token": self.payment_method_token,
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"plan_id": plan_id
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})
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if result.is_success:
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self.subscription_id = result.subscription.id
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self.plan_id = plan_id
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if plan_id == "P20":
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self.plan_name = "Business ($20 / month)"
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elif plan_id == "Y192":
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self.plan_name = "Business ($192 / year)"
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elif plan_id == "P80":
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self.plan_name = "Business Plus ($80 / month)"
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elif plan_id == "Y768":
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self.plan_name = "Business Plus ($768 / year)"
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self.save()
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return result
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def cancel(self):
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if self.subscription_id:
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braintree.Subscription.cancel(self.subscription_id)
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self.subscription_id = ""
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self.plan_id = ""
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self.plan_name = ""
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self.save()
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def pm_is_card(self):
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pm = self.payment_method
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return isinstance(pm, braintree.credit_card.CreditCard)
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def pm_is_paypal(self):
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pm = self.payment_method
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return isinstance(pm, braintree.paypal_account.PayPalAccount)
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def next_billing_date(self):
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o = self._get_braintree_subscription()
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return o.next_billing_date
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@property
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def address(self):
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if not hasattr(self, "_address"):
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try:
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self._address = braintree.Address.find(self.customer_id,
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self.address_id)
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except braintree.exceptions.NotFoundError:
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self._address = None
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return self._address
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def flattened_address(self):
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if self.address_id:
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ctx = {"a": self.address, "email": self.user.email}
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return render_to_string("payments/address_plain.html", ctx)
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else:
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return self.user.email
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@property
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def transactions(self):
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if not hasattr(self, "_tx"):
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if not self.customer_id:
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self._tx = []
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else:
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self._tx = list(braintree.Transaction.search(braintree.TransactionSearch.customer_id == self.customer_id))
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return self._tx
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