DRF_Template/backend/subscriptions/signals.py

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from django.dispatch import receiver
from django.db.models.signals import post_migrate, post_save
from .models import UserSubscription, StripePrice, SubscriptionPlan
from django.core.cache import cache
from config.settings import STRIPE_SECRET_KEY
import stripe
stripe.api_key = STRIPE_SECRET_KEY
# Template for running actions after user have paid for a subscription
@receiver(post_save, sender=SubscriptionPlan)
def clear_cache_after_plan_updates(sender, instance, **kwargs):
# Clear cache
cache.delete('subscriptionplans')
@receiver(post_save, sender=UserSubscription)
def scan_after_payment(sender, instance, **kwargs):
# If the updated/created subscription is valid
if instance.valid and instance.user:
# TODO: Add any Celery task actions here for regular subscription payees
pass
@receiver(post_migrate)
def create_subscriptions(sender, **kwargs):
if sender.name == 'subscriptions':
print('Importing data from Stripe')
created_prices = 0
created_plans = 0
skipped_prices = 0
skipped_plans = 0
products = stripe.Product.list(active=True)
prices = stripe.Price.list(expand=["data.tiers"], active=True)
# Create the StripePrice
for price in prices['data']:
annual = (price['recurring']['interval'] ==
'year') if price['recurring'] else False
STRIPE_PRICE, CREATED = StripePrice.objects.get_or_create(
stripe_price_id=price['id'],
price=price['unit_amount'] / 100,
annual=annual,
lookup_key=price['lookup_key'],
prorated=price['recurring']['usage_type'] == 'metered',
currency=price['currency']
)
if CREATED:
created_prices += 1
else:
skipped_prices += 1
# Create the SubscriptionPlan
for product in products['data']:
ANNUAL_PRICE = None
MONTHLY_PRICE = None
for price in prices['data']:
if price['product'] == product['id']:
STRIPE_PRICE = StripePrice.objects.get(
stripe_price_id=price['id'],
)
if STRIPE_PRICE.annual:
ANNUAL_PRICE = STRIPE_PRICE
else:
MONTHLY_PRICE = STRIPE_PRICE
if ANNUAL_PRICE or MONTHLY_PRICE:
SUBSCRIPTION_PLAN, CREATED = SubscriptionPlan.objects.get_or_create(
name=product['name'],
description=product['description'],
stripe_product_id=product['id'],
annual_price=ANNUAL_PRICE,
monthly_price=MONTHLY_PRICE,
group_exclusive=product['metadata']['group_exclusive'] == 'True'
)
if CREATED:
created_plans += 1
else:
skipped_plans += 1
# Skip over plans with missing pricing rates
else:
print('Skipping plan' +
product['name'] + 'with missing pricing data')
# Assign the StripePrice to the SubscriptionPlan
SUBSCRIPTION_PLAN.save()
print('Created', created_plans, 'new plans')
print('Skipped', skipped_plans, 'existing plans')
print('Created', created_prices, 'new prices')
print('Skipped', skipped_prices, 'existing prices')