import logging import stripe from django.conf import settings from datacenterlight.models import StripePlan stripe.api_key = settings.STRIPE_API_PRIVATE_KEY logger = logging.getLogger(__name__) def handleStripeError(f): def handleProblems(*args, **kwargs): response = { 'paid': False, 'response_object': None, 'error': None } common_message = "Currently it's not possible to make payments." try: response_object = f(*args, **kwargs) response = { 'response_object': response_object, 'error': None } return response except stripe.error.CardError as e: # Since it's a decline, stripe.error.CardError will be caught body = e.json_body err = body['error'] response.update({'error': err['message']}) return response except stripe.error.RateLimitError as e: response.update({'error': "Too many requests made to the API too quickly"}) return response except stripe.error.InvalidRequestError as e: response.update({'error': "Invalid parameters"}) return response except stripe.error.AuthenticationError as e: # Authentication with Stripe's API failed # (maybe you changed API keys recently) response.update({'error': common_message}) return response except stripe.error.APIConnectionError as e: response.update({'error': common_message}) return response except stripe.error.StripeError as e: # maybe send email response.update({'error': common_message}) return response except Exception as e: # maybe send email response.update({'error': common_message}) return response return handleProblems class StripeUtils(object): CURRENCY = 'chf' INTERVAL = 'month' SUCCEEDED_STATUS = 'succeeded' STRIPE_PLAN_ALREADY_EXISTS = 'Plan already exists' STRIPE_NO_SUCH_PLAN = 'No such plan' PLAN_EXISTS_ERROR_MSG = 'Plan {} exists already.\nCreating a local StripePlan now.' PLAN_DOES_NOT_EXIST_ERROR_MSG = 'Plan {} does not exist.' def __init__(self): self.stripe = stripe def update_customer_token(self, customer, token): customer.source = token customer.save() @handleStripeError def update_customer_card(self, customer_id, token): customer = stripe.Customer.retrieve(customer_id) current_card_token = customer.default_source customer.sources.retrieve(current_card_token).delete() customer.source = token customer.save() credit_card_raw_data = customer.sources.data.pop() new_card_data = { 'last4': credit_card_raw_data.last4, 'brand': credit_card_raw_data.brand } return new_card_data @handleStripeError def get_card_details(self, customer_id, token): customer = stripe.Customer.retrieve(customer_id) credit_card_raw_data = customer.sources.data.pop() card_details = { 'last4': credit_card_raw_data.last4, 'brand': credit_card_raw_data.brand } return card_details def check_customer(self, id, user, token): customers = self.stripe.Customer.all() if not customers.get('data'): customer = self.create_customer(token, user.email, user.name) else: try: customer = stripe.Customer.retrieve(id) except stripe.InvalidRequestError: customer = self.create_customer(token, user.email, user.name) user.stripecustomer.stripe_id = customer.get('response_object').get('id') user.stripecustomer.save() return customer @handleStripeError def get_customer(self, id): customer = stripe.Customer.retrieve(id) # data = customer.get('response_object') return customer @handleStripeError def create_customer(self, token, email, name=None): if name is None or name.strip() == "": name = email customer = self.stripe.Customer.create( source=token, description=name, email=email ) return customer @handleStripeError def make_charge(self, amount=None, customer=None): _amount = float(amount) amount = int(_amount * 100) # stripe amount unit, in cents charge = self.stripe.Charge.create( amount=amount, # in cents currency=self.CURRENCY, customer=customer ) return charge @handleStripeError def get_or_create_stripe_plan(self, amount, name, stripe_plan_id): """ This function checks if a StripePlan with the given stripe_plan_id already exists. If it exists then the function returns this object otherwise it creates a new StripePlan and returns the new object. :param amount: The amount in CHF :param name: The name of the Stripe plan to be created. :param stripe_plan_id: The id of the Stripe plan to be created. Use get_stripe_plan_id_string function to obtain the name of the plan to be created :return: The StripePlan object if it exists else creates a Plan object in Stripe and a local StripePlan and returns it. Returns None in case of Stripe error """ _amount = float(amount) amount = int(_amount * 100) # stripe amount unit, in cents stripe_plan_db_obj = None try: stripe_plan_db_obj = StripePlan.objects.get(stripe_plan_id=stripe_plan_id) except StripePlan.DoesNotExist: try: self.stripe.Plan.create( amount=amount, interval=self.INTERVAL, name=name, currency=self.CURRENCY, id=stripe_plan_id) stripe_plan_db_obj = StripePlan.objects.create(stripe_plan_id=stripe_plan_id) except stripe.error.InvalidRequestError as e: if self.STRIPE_PLAN_ALREADY_EXISTS in str(e): logger.debug(self.PLAN_EXISTS_ERROR_MSG.format(stripe_plan_id)) stripe_plan_db_obj = StripePlan.objects.create(stripe_plan_id=stripe_plan_id) return stripe_plan_db_obj @handleStripeError def delete_stripe_plan(self, stripe_plan_id): """ Deletes the Plan in Stripe and also deletes the local db copy of the plan if it exists :param stripe_plan_id: The stripe plan id that needs to be deleted :return: True if the plan was deleted successfully from Stripe, False otherwise. """ return_value = False try: plan = self.stripe.Plan.retrieve(stripe_plan_id) plan.delete() return_value = True StripePlan.objects.filter(stripe_plan_id=stripe_plan_id).all().delete() except stripe.error.InvalidRequestError as e: if self.STRIPE_NO_SUCH_PLAN in str(e): logger.debug(self.PLAN_DOES_NOT_EXIST_ERROR_MSG.format(stripe_plan_id)) return return_value @handleStripeError def subscribe_customer_to_plan(self, customer, plans): """ Subscribes the given customer to the list of given plans :param customer: The stripe customer identifier :param plans: A list of stripe plans. Ref: https://stripe.com/docs/api/python#create_subscription-items e.g. plans = [ { "plan": "dcl-v1-cpu-2-ram-5gb-ssd-10gb", }, ] :return: The subscription StripeObject """ subscription_result = self.stripe.Subscription.create( customer=customer, items=plans, ) return subscription_result @handleStripeError def make_payment(self, customer, amount, token): charge = self.stripe.Charge.create( amount=amount, # in cents currency=self.CURRENCY, customer=customer ) return charge @staticmethod def get_stripe_plan_id(cpu, ram, ssd, version, app): """ Returns the stripe plan id string of the form `dcl-v1-cpu-2-ram-5gb-ssd-10gb` based on the input parameters :param cpu: The number of cores :param ram: The size of the RAM in GB :param ssd: The size of storage in GB :param version: The version of the Stripe plans :return: A string of the form `dcl-v1-cpu-2-ram-5gb-ssd-10gb` """ dcl_plan_string = 'cpu-{cpu}-ram-{ram}gb-ssd-{ssd}gb'.format(cpu=cpu, ram=ram, ssd=ssd) stripe_plan_id_string = '{app}-v{version}-{plan}'.format(app=app, version=version, plan=dcl_plan_string) return stripe_plan_id_string