Add webhook app and create_webhook management command

webhook/views.py

@@ -0,0 +1,36 @@
+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
+
+logger = logging.getLogger(__name__)
+
+
+@require_POST
+@csrf_exempt
+def handle_invoice_webhook(request):
+    payload = request.body
+    sig_header = request.META['HTTP_STRIPE_SIGNATURE']
+    event = None
+
+    try:
+        event = stripe.Webhook.construct_event(
+            payload, sig_header, settings.INVOICE_WEBHOOK_SECRET
+        )
+    except ValueError as e:
+        logger.error("Invalid payload details = " + str(e))
+        # Invalid payload
+        return HttpResponse(status=400)
+    except stripe.error.SignatureVerificationError as e:
+        logger.error("SignatureVerificationError details = " + str(e))
+        # Invalid signature
+        return HttpResponse(status=400)
+
+    # Do something with event
+    logger.debug("Passed invoice signature verification")
+
+    return HttpResponse(status=200)