Implement cancelling subscriptions

app/local_settings.example.py

@@ -43,3 +43,4 @@ STRIPE_PUBLIC_API_KEY_PROD = "pk_prod_xxx"
 
 STRIPE_ENDPOINT_SECRET = ""
 STATIC_ROOT = ""
+SECRET_KEY = "a"

app/urls.py

@@ -20,7 +20,7 @@ from django.urls import include, path
 from django.views.generic import TemplateView
 
 from core.ui.views.drilldown import Drilldown
-from core.views import Billing, Home, Order, Portal, Signup
+from core.views import Billing, Cancel, Home, Order, Portal, Signup
 from core.views.callbacks import Callback
 from core.views.charts import SentimentChartJSONView, VolumeChartJSONView
 
@@ -29,6 +29,11 @@ urlpatterns = [
     path("callback", Callback.as_view(), name="callback"),
     path("billing/", Billing.as_view(), name="billing"),
     path("order/<str:plan_name>/", Order.as_view(), name="order"),
+    path(
+        "cancel_subscription/<str:plan_name>/",
+        Cancel.as_view(),
+        name="cancel_subscription",
+    ),
     path(
         "success/", TemplateView.as_view(template_name="success.html"), name="success"
     ),

core/templates/index.html

@@ -11,7 +11,6 @@
         <div class="columns">
           {% if block.column1 is not None %}
             <div class="column">
-
               {{ block.column1 }}
             </div>
           {% endif %}

core/templates/partials/product-list.html

@@ -32,7 +32,7 @@
             {% endif %}
 
             {% if plan in user_plans %}
-              <a class="level-item" href="/cancel/{{ plan.name }}">
+              <a class="level-item" href="/cancel_subscription/{{ plan.name }}">
                 <span class="icon is-small has-text-info">
                   <i class="fas fa-cancel" aria-hidden="true"></i>
                 </span>

core/templates/subscriptioncancel.html

@@ -0,0 +1,9 @@
+{% extends "base.html" %}
+
+{% block content %}
+
+  <section>
+    <p>Subscription {{ plan }} cancelled!</p>
+  </section>
+
+{% endblock %}

core/views/__init__.py

@@ -1,3 +1,4 @@
+import logging
 import pprint
 
 import stripe
@@ -13,6 +14,7 @@ from core.forms import NewUserForm
 from core.lib.products import assemble_plan_map
 from core.models import ContentBlock, Plan, Session
 
+logger = logging.getLogger(__name__)
 pp = pprint.PrettyPrinter(indent=4)
 
 # Create your views here
@@ -55,6 +57,25 @@ class Order(LoginRequiredMixin, View):
             return JsonResponse({"error": str(e)}, status=500)
 
 
+class Cancel(LoginRequiredMixin, View):
+    def get(self, request, plan_name):
+        plan = Plan.objects.get(name=plan_name)
+        try:
+            subscriptions = stripe.Subscription.list(
+                customer=request.user.stripe_id, price=plan.product_id
+            )
+            for subscription in subscriptions["data"]:
+                items = subscription["items"]["data"]
+                for item in items:
+                    stripe.Subscription.delete(item["subscription"])
+                    return render(request, "subscriptioncancel.html", {"plan": plan})
+                    # return JsonResponse({'id': session.id})
+        except Exception as e:
+            # Raise a server error
+            logging.error(f"Error cancelling subscription for user: {e}")
+            return JsonResponse({"error": "True"}, status=500)
+
+
 class Signup(CreateView):
     form_class = NewUserForm
     success_url = reverse_lazy("login")

core/views/callbacks.py

@@ -1,3 +1,4 @@
+import logging
 from datetime import datetime
 
 import stripe
@@ -9,6 +10,8 @@ from rest_framework.views import APIView
 
 from core.models import Plan, Session, User
 
+logger = logging.getLogger(__name__)
+
 
 class Callback(APIView):
     parser_classes = [JSONParser]
@@ -17,16 +20,17 @@ class Callback(APIView):
     def post(self, request):
         payload = request.body
         sig_header = request.META["HTTP_STRIPE_SIGNATURE"]
-
         try:
             stripe.Webhook.construct_event(
                 payload, sig_header, settings.STRIPE_ENDPOINT_SECRET
             )
         except ValueError:
             # Invalid payload
+            logger.error("Invalid payload")
             return HttpResponse(status=400)
         except stripe.error.SignatureVerificationError:
             # Invalid signature
+            logger.error("Invalid signature")
             return HttpResponse(status=400)
 
         if request.data is None:
@@ -37,7 +41,6 @@ class Callback(APIView):
                 session = request.data["data"]["object"]["id"]
                 subscription_id = request.data["data"]["object"]["subscription"]
                 session_map = Session.objects.get(session=session)
-                print("querying session", session)
                 if not session_map:
                     return JsonResponse({"success": False}, status=500)
                 user = session_map.user
@@ -47,7 +50,7 @@ class Callback(APIView):
             if rtype == "customer.subscription.updated":
                 stripe_id = request.data["data"]["object"]["customer"]
                 if not stripe_id:
-                    print("No user found for customer:", stripe_id)
+                    logging.error("No stripe id")
                     return JsonResponse({"success": False}, status=500)
                 user = User.objects.get(stripe_id=stripe_id)
                 # ssubscription_active
@@ -58,7 +61,9 @@ class Callback(APIView):
                     if session_iter.subscription_id == subscription_id:
                         session = session_iter
                 if not session:
-                    print(f"No session found for subscription id {subscription_id}")
+                    logging.error(
+                        f"No session found for subscription id {subscription_id}"
+                    )
                     return JsonResponse({"success": False}, status=500)
                 # query Session objects
                 # iterate and check against product_id
@@ -66,24 +71,20 @@ class Callback(APIView):
                 product_id = request.data["data"]["object"]["plan"]["id"]
                 plan = Plan.objects.get(product_id=product_id)
                 if not plan:
-                    print(f"Plan not found: {product_id}")
+                    logging.error(f"Plan not found: {product_id}")
                     return JsonResponse({"success": False}, status=500)
                 session.plan = plan
                 session.save()
 
             elif rtype == "payment_intent.succeeded":
                 customer = request.data["data"]["object"]["customer"]
-                print("customer", customer)
                 user = User.objects.get(stripe_id=customer)
                 if not user:
-                    print("No user found for customer:", customer)
+                    logging.error(f"No user found for customer: {customer}")
                     return JsonResponse({"success": False}, status=500)
-                print("got", user.email)
                 session = Session.objects.get(request=request.data["request"]["id"])
-                print("Got session", session)
 
                 user.plans.add(session.plan)
-                print("ADDING PLAN TO USER PLANS")
                 user.last_payment = datetime.utcnow()
                 user.save()
 
@@ -91,7 +92,7 @@ class Callback(APIView):
                 customer = request.data["data"]["object"]["customer"]
                 user = User.objects.get(stripe_id=customer)
                 if not user:
-                    print("No user found for customer:", customer)
+                    logging.error(f"No user found for customer {customer}")
                     return JsonResponse({"success": False}, status=500)
                 product_id = request.data["data"]["object"]["plan"]["id"]
                 plan = Plan.objects.get(product_id=product_id)