forked from uncloud/uncloud
114 lines
3.8 KiB
Python
114 lines
3.8 KiB
Python
import stripe
|
|
import stripe.error
|
|
import logging
|
|
|
|
from django.core.exceptions import ObjectDoesNotExist
|
|
from django.conf import settings
|
|
|
|
import uncloud_pay.models
|
|
|
|
# Static stripe configuration used below.
|
|
CURRENCY = 'chf'
|
|
|
|
# README: We use the Payment Intent API as described on
|
|
# https://stripe.com/docs/payments/save-and-reuse
|
|
|
|
# For internal use only.
|
|
stripe.api_key = settings.STRIPE_KEY
|
|
|
|
# Helper (decorator) used to catch errors raised by stripe logic.
|
|
# Catch errors that should not be displayed to the end user, raise again.
|
|
def handle_stripe_error(f):
|
|
def handle_problems(*args, **kwargs):
|
|
response = {
|
|
'paid': False,
|
|
'response_object': None,
|
|
'error': None
|
|
}
|
|
|
|
common_message = "Currently it is not possible to make payments. Please try agin later."
|
|
try:
|
|
response_object = f(*args, **kwargs)
|
|
return response_object
|
|
except stripe.error.CardError as e:
|
|
# Since it's a decline, stripe.error.CardError will be caught
|
|
body = e.json_body
|
|
logging.error(str(e))
|
|
|
|
raise e # For error handling.
|
|
except stripe.error.RateLimitError:
|
|
logging.error("Too many requests made to the API too quickly.")
|
|
raise Exception(common_message)
|
|
except stripe.error.InvalidRequestError as e:
|
|
logging.error(str(e))
|
|
raise Exception('Invalid parameters.')
|
|
except stripe.error.AuthenticationError as e:
|
|
# Authentication with Stripe's API failed
|
|
# (maybe you changed API keys recently)
|
|
logging.error(str(e))
|
|
raise Exception(common_message)
|
|
except stripe.error.APIConnectionError as e:
|
|
logging.error(str(e))
|
|
raise Exception(common_message)
|
|
except stripe.error.StripeError as e:
|
|
# XXX: maybe send email
|
|
logging.error(str(e))
|
|
raise Exception(common_message)
|
|
except Exception as e:
|
|
# maybe send email
|
|
logging.error(str(e))
|
|
raise Exception(common_message)
|
|
|
|
return handle_problems
|
|
|
|
# Actual Stripe logic.
|
|
|
|
def public_api_key():
|
|
return settings.STRIPE_PUBLIC_KEY
|
|
|
|
def get_customer_id_for(user):
|
|
try:
|
|
# .get() raise if there is no matching entry.
|
|
return uncloud_pay.models.StripeCustomer.objects.get(owner=user).stripe_id
|
|
except ObjectDoesNotExist:
|
|
# No entry yet - making a new one.
|
|
try:
|
|
customer = create_customer(user.username, user.email)
|
|
uncloud_stripe_mapping = uncloud_pay.models.StripeCustomer.objects.create(
|
|
owner=user, stripe_id=customer.id)
|
|
return uncloud_stripe_mapping.stripe_id
|
|
except Exception as e:
|
|
return None
|
|
|
|
@handle_stripe_error
|
|
def create_setup_intent(customer_id):
|
|
return stripe.SetupIntent.create(customer=customer_id)
|
|
|
|
@handle_stripe_error
|
|
def get_setup_intent(setup_intent_id):
|
|
return stripe.SetupIntent.retrieve(setup_intent_id)
|
|
|
|
def get_payment_method(payment_method_id):
|
|
return stripe.PaymentMethod.retrieve(payment_method_id)
|
|
|
|
@handle_stripe_error
|
|
def charge_customer(amount, customer_id, card_id):
|
|
# Amount is in CHF but stripes requires smallest possible unit.
|
|
# https://stripe.com/docs/api/payment_intents/create#create_payment_intent-amount
|
|
adjusted_amount = int(amount * 100)
|
|
return stripe.PaymentIntent.create(
|
|
amount=adjusted_amount,
|
|
currency=CURRENCY,
|
|
customer=customer_id,
|
|
payment_method=card_id,
|
|
off_session=True,
|
|
confirm=True,
|
|
)
|
|
|
|
@handle_stripe_error
|
|
def create_customer(name, email):
|
|
return stripe.Customer.create(name=name, email=email)
|
|
|
|
@handle_stripe_error
|
|
def get_customer(customer_id):
|
|
return stripe.Customer.retrieve(customer_id)
|