dynamicweb/webhook/views.py

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import datetime
import logging
import stripe
# Create your views here.
from django.conf import settings
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_POST
from membership.models import StripeCustomer
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from utils.models import BillingAddress, UserBillingAddress
from utils.tasks import send_plain_email_task
logger = logging.getLogger(__name__)
# Things to do for webhooks feature
# 1. Uninstall old version and install a more recent version of stripe
# ```
# source venv/bin/activate
# ./manage.py shell
# pip uninstall stripe
# pip install stripe==2.24.1
# ```
# 2. Create tax id updated webhook
# ```
# ./manage.py webhook --create \
# --webhook_endpoint https://datacenterlight.ch/en-us/webhooks/ \
# --events_csv customer.tax_id.updated
# ```
#
# 3. From the secret obtained in 2, setup an environment variable
# ```
# WEBHOOK_SECRET='whsec......'
# ```
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@require_POST
@csrf_exempt
def handle_webhook(request):
payload = request.body
event = None
try:
if 'HTTP_STRIPE_SIGNATURE' in request.META:
sig_header = request.META['HTTP_STRIPE_SIGNATURE']
else:
logger.error("No HTTP_STRIPE_SIGNATURE header")
# Invalid payload
return HttpResponse(status=400)
event = stripe.Webhook.construct_event(
payload, sig_header, settings.WEBHOOK_SECRET
)
except ValueError as e:
# Invalid payload
err_msg = "FAILURE handle_invoice_webhook: Invalid payload details"
err_body = "Details %s" % str(e)
return handle_error(err_msg, err_body)
except stripe.error.SignatureVerificationError as e:
# Invalid signature
err_msg = "FAILURE handle_invoice_webhook: SignatureVerificationError"
err_body = "Details %s" % str(e)
return handle_error(err_msg, err_body)
# Do something with event
logger.debug("Passed signature verification")
if event.type == "customer.tax_id.updated":
logger.debug("Webhook Event: customer.tax_id.updated")
tax_id_obj = event.data.object
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logger.debug("Tax_id %s is %s" % (tax_id_obj.id,
tax_id_obj.verification.status))
stripe_customer = None
try:
stripe_customer = StripeCustomer.objects.get(stripe_id=tax_id_obj.customer)
except StripeCustomer.DoesNotExist as dne:
logger.debug(
"StripeCustomer %s does not exist" % tax_id_obj.customer)
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if tax_id_obj.verification.status == "verified":
b_addresses = BillingAddress.objects.filter(stripe_tax_id=tax_id_obj.id)
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for b_address in b_addresses:
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b_address.vat_validation_status = tax_id_obj.verification.status
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b_address.vat_number_validated_on = datetime.datetime.now()
b_address.save()
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ub_addresses = UserBillingAddress.objects.filter(stripe_tax_id=tax_id_obj.id)
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for ub_address in ub_addresses:
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ub_address.vat_validation_status = tax_id_obj.verification.status
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ub_address.vat_number_validated_on = datetime.datetime.now()
ub_address.save()
email_data = {
'subject': "The VAT %s associated with %s was verified" %
(tax_id_obj.value, stripe_customer.user.email if stripe_customer else "unknown"),
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': settings.DCL_ERROR_EMAILS_TO_LIST,
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'body': "The following objects were modified:\n".join(
'\n'.join([str(b_address) for b_address in b_addresses])
).join(
'\n'.join([str(ub_address) for ub_address in ub_addresses])
),
}
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else:
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logger.debug("Tax_id %s is %s" % (tax_id_obj.id,
tax_id_obj.verification.status))
email_data = {
'subject': "The VAT %s associated with %s was %s" %
(tax_id_obj.value, stripe_customer.user.email if stripe_customer else "unknown", tax_id_obj.verification.status),
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': settings.DCL_ERROR_EMAILS_TO_LIST,
'body': "Response = %s" % str(tax_id_obj),
}
send_plain_email_task.delay(email_data)
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else:
logger.error("Unhandled event : " + event.type)
return HttpResponse(status=200)
def handle_error(error_msg, error_body):
logger.error("%s -- %s" % (error_msg, error_body))
email_to_admin_data = {
'subject': error_msg,
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': [settings.ADMIN_EMAIL],
'body': error_body,
}
send_plain_email_task.delay(email_to_admin_data)
return HttpResponse(status=400)