feat: refunds, failed and pending payments work

home/models/pages.py

@@ -121,7 +121,10 @@ class CoursePage(Page):
             return True
 
         return CoursePurchase.objects.filter(
-            user=user, course=self, refunded=False
+            user=user,
+            course=self,
+            refunded=False,
+            status=CoursePurchase.Status.PAID,
         ).exists()
 
     def _user_purchase_id(self, user):
@@ -129,7 +132,10 @@ class CoursePage(Page):
             return None
 
         purchase = CoursePurchase.objects.filter(
-            user=user, course=self, refunded=False
+            user=user,
+            course=self,
+            refunded=False,
+            status=CoursePurchase.Status.PAID,
         ).first()
         print(f"User {user} purchase for course {self}: {purchase}")
         return purchase.id if purchase else None
@@ -139,15 +145,19 @@ class CoursePage(Page):
         if not user.is_authenticated:
             return False
         obj, created = CoursePurchase.objects.get_or_create(
-            user=user, course=self, refunded=False
+            user=user,
+            course=self,
+            refunded=False,
+            defaults={"status": CoursePurchase.Status.PAID},
         )
+        if obj.status != CoursePurchase.Status.PAID or obj.refunded:
+            obj.status = CoursePurchase.Status.PAID
+            obj.refunded = False
+            obj.save(update_fields=["status", "refunded"])
         # Add user to dedicated access group for this course
         group_name = f"course_{self.id}_access"
         group, _ = Group.objects.get_or_create(name=group_name)
         user.groups.add(group)
-        # Ensure allowed_groups only includes this access group
-        if not self.allowed_groups.filter(id=group.id).exists():
-            self.allowed_groups.add(group)
         return created
 
     def save(self, *args, **kwargs):

purchase/migrations/0009_coursepurchase_stripe_charge_id_and_more.py

@@ -0,0 +1,23 @@
+# Generated by Django 6.0.4 on 2026-05-20 17:28
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('purchase', '0008_remove_purchasableproduct_stripe_payment_url'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='coursepurchase',
+            name='stripe_charge_id',
+            field=models.CharField(blank=True, max_length=255, null=True),
+        ),
+        migrations.AddField(
+            model_name='coursepurchase',
+            name='stripe_payment_intent_id',
+            field=models.CharField(blank=True, max_length=255, null=True),
+        ),
+    ]

purchase/models.py

@@ -16,11 +16,11 @@ logger = lg.getLogger(__name__)
 
 class CoursePurchase(models.Model):
     class Status(models.TextChoices):
-        INITIATED = "initiated", "Initiated"
+        INITIATED = "initiated"
-        PENDING = "pending", "Pending"
+        PENDING = "pending"
-        PAID = "paid", "Paid"
+        PAID = "paid"
-        REFUNDED = "refunded", "Refunded"
+        REFUNDED = "refunded"
-        FAILED = "failed", "Failed"
+        FAILED = "failed"
 
     user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
     course = models.ForeignKey("home.CoursePage", on_delete=models.CASCADE)
@@ -32,11 +32,120 @@ class CoursePurchase(models.Model):
         default=Status.INITIATED,
     )
     stripe_checkout_session_id = models.CharField(max_length=255, blank=True, null=True)
+    # Stripe identifiers to help reconcile refunds coming from webhooks or admin actions
+    stripe_payment_intent_id = models.CharField(max_length=255, blank=True, null=True)
+    stripe_charge_id = models.CharField(max_length=255, blank=True, null=True)
 
     def mock_refund(self):
+        """Legacy helper used in dev: mark purchase refunded locally and perform cleanup.
+
+        Prefer using `refund_via_stripe` to perform an actual Stripe refund when appropriate.
+        """
+        # If we have Stripe identifiers it's better to actually issue a refund via Stripe
+        if self.stripe_charge_id or self.stripe_payment_intent_id:
+            try:
+                self.refund_via_stripe()
+                return True
+            except Exception:
+                # Fallback to local refund if Stripe refund cannot be performed
+                pass
+
         self.refunded = True
+        self.status = CoursePurchase.Status.REFUNDED
         self.save()
 
+    def refund_via_stripe(self, amount=None, reason=None):
+        """Initiate a refund in Stripe for this purchase and mark it refunded locally.
+
+        - amount: integer in cents (optional) to perform a partial refund
+        - reason: optional string ("duplicate", "fraud", "requested_by_customer")
+
+        This method is idempotent: calling it for an already-refunded purchase will be
+        a no-op.
+        """
+        # If already refunded, do nothing
+        if self.refunded:
+            return None
+
+        stripe_api_key = getattr(
+            settings, "STRIPE_SECRET_KEY", os.getenv("STRIPE_SECRET_KEY")
+        )
+        if not stripe_api_key:
+            # Can't call Stripe; mark refunded locally (useful for local testing)
+            self.refunded = True
+            self.status = CoursePurchase.Status.REFUNDED
+            self.save()
+            return None
+
+        import stripe as _stripe
+
+        _stripe.api_key = stripe_api_key
+
+        # Determine what identifier to use for refunding: prefer charge id if present,
+        # otherwise use payment_intent. Stripe accepts either when creating a refund.
+        refund_kwargs = {}
+        if amount is not None:
+            refund_kwargs["amount"] = int(amount)
+        if reason is not None:
+            refund_kwargs["reason"] = reason
+
+        try:
+            if self.stripe_charge_id:
+                refund = _stripe.Refund.create(
+                    charge=self.stripe_charge_id, **refund_kwargs
+                )
+            elif self.stripe_payment_intent_id:
+                refund = _stripe.Refund.create(
+                    payment_intent=self.stripe_payment_intent_id, **refund_kwargs
+                )
+            else:
+                # As a last resort, try to lookup the PaymentIntent from the Checkout Session
+                if self.stripe_checkout_session_id:
+                    session = _stripe.checkout.Session.retrieve(
+                        self.stripe_checkout_session_id
+                    )
+                    payment_intent = session.get("payment_intent")
+                    if payment_intent:
+                        refund = _stripe.Refund.create(
+                            payment_intent=payment_intent, **refund_kwargs
+                        )
+                    else:
+                        raise RuntimeError(
+                            "No Stripe identifiers available to perform refund"
+                        )
+                else:
+                    raise RuntimeError(
+                        "No Stripe identifiers available to perform refund"
+                    )
+
+            # On success, mark refunded locally and perform cleanup (remove group, gitea team)
+            self.refunded = True
+            self.status = CoursePurchase.Status.REFUNDED
+            # Try to persist charge/payment intent ids if Stripe returned them
+            try:
+                charge_id = getattr(refund, "charge", None)
+                if charge_id and not self.stripe_charge_id:
+                    self.stripe_charge_id = charge_id
+            except Exception:
+                pass
+
+            try:
+                # Some Refund objects include payment_intent
+                pi = getattr(refund, "payment_intent", None)
+                if pi and not self.stripe_payment_intent_id:
+                    self.stripe_payment_intent_id = pi
+            except Exception:
+                pass
+
+            # Save and trigger model save logic (which will remove Gitea/team membership)
+            self.save()
+            return refund
+        except Exception as e:
+            logger.exception(
+                f"Failed to initiate Stripe refund for CoursePurchase {self.id}: {e}"
+            )
+            raise
+
     def _get_gitea_team_id(self, team_name):
         api_url = getattr(settings, "GITEA_URL", None)
         if not api_url:
@@ -131,6 +240,14 @@ class CoursePurchase(models.Model):
             )
 
     def save(self, *args, **kwargs):
+        previous_state = None
+        if self.pk:
+            previous_state = (
+                self.__class__.objects.filter(pk=self.pk)
+                .values("status", "refunded")
+                .first()
+            )
+
         super().save(*args, **kwargs)
         group_name = f"course_{self.course.id}_access"
 
@@ -140,15 +257,28 @@ class CoursePurchase(models.Model):
             f"Saving CoursePurchase for user {self.user} and course {self.course.title}, refunded={self.refunded}"
         )
 
-        if self.refunded:
+        should_grant_access = (
-            print(f"Removing user {self.user} from group {group_name} due to refund")
+            self.status == CoursePurchase.Status.PAID and not self.refunded
-            self.remove_from_gitea_team()
+        )
-            self.user.groups.remove(group)
+        had_granted_access = (
-        else:
+            bool(previous_state)
+            and previous_state["status"] == CoursePurchase.Status.PAID
+            and not previous_state["refunded"]
+        )
+
+        if should_grant_access:
             logger.debug(
                 f"Adding user {self.user} to group {group_name} for course {self.course.title}"
             )
             self.add_to_gitea_team()
+            self.user.groups.add(group)
+        else:
+            if had_granted_access:
+                print(
+                    f"Removing user {self.user} from group {group_name} due to status {self.status}"
+                )
+                self.remove_from_gitea_team()
+            self.user.groups.remove(group)
 
 
 class PurchasableProduct(Orderable, models.Model):

purchase/tests.py

@@ -1,3 +1,133 @@
-from django.test import TestCase
+from unittest import mock
 
-# Create your tests here.
+from django.contrib.auth import get_user_model
+from django.test import TestCase, override_settings
+from django.urls import reverse
+from wagtail.models import Page
+
+from home.models.pages import CoursePage
+from purchase.models import CoursePurchase, PurchasableProduct
+
+
+@override_settings(
+    STRIPE_SECRET_KEY=None,
+    STRIPE_WEBHOOK_SECRET="test",
+    GITEA_URL=None,
+)
+class PurchaseStatusTests(TestCase):
+    """Regression tests for purchase status tracking."""
+
+    def setUp(self):
+        self.user = get_user_model().objects.create_user(
+            username="alice",
+            email="alice@example.com",
+            password="pass12345",
+        )
+        root_page = Page.get_first_root_node()
+        self.course = CoursePage(title="Django Course", slug="django-course")
+        root_page.add_child(instance=self.course)
+        self.product = PurchasableProduct.objects.create(
+            name="Django Course",
+            course=self.course,
+            price_cents=1000,
+            currency="pln",
+        )
+
+    def _create_purchase(self, status, session_id="cs_test", refunded=False):
+        return CoursePurchase.objects.create(
+            user=self.user,
+            course=self.course,
+            status=status,
+            refunded=refunded,
+            stripe_checkout_session_id=session_id,
+        )
+
+    def _post_stripe_event(self, event):
+        with mock.patch(
+            "purchase.views.stripe.Webhook.construct_event", return_value=event
+        ):
+            response = self.client.post(
+                reverse("stripe-webhook"),
+                data="{}",
+                content_type="application/json",
+                HTTP_STRIPE_SIGNATURE="test-signature",
+            )
+
+        self.assertEqual(response.status_code, 200)
+
+    def test_access_depends_on_paid_status(self):
+        purchase = self._create_purchase(CoursePurchase.Status.PENDING)
+
+        self.assertFalse(self.course._user_has_access(self.user))
+
+        purchase.status = CoursePurchase.Status.FAILED
+        purchase.save(update_fields=["status"])
+        self.assertFalse(self.course._user_has_access(self.user))
+
+        purchase.status = CoursePurchase.Status.PAID
+        purchase.refunded = False
+        purchase.save(update_fields=["status", "refunded"])
+        self.assertTrue(self.course._user_has_access(self.user))
+
+    def test_checkout_session_completed_unpaid_stays_pending(self):
+        purchase = self._create_purchase(
+            CoursePurchase.Status.PENDING, session_id="cs_completed"
+        )
+
+        self._post_stripe_event(
+            {
+                "type": "checkout.session.completed",
+                "data": {
+                    "object": {
+                        "id": "cs_completed",
+                        "payment_status": "unpaid",
+                    }
+                },
+            }
+        )
+
+        purchase.refresh_from_db()
+        self.assertEqual(purchase.status, CoursePurchase.Status.PENDING)
+
+    def test_async_payment_failed_marks_purchase_failed(self):
+        purchase = self._create_purchase(
+            CoursePurchase.Status.PENDING, session_id="cs_async_failed"
+        )
+
+        self._post_stripe_event(
+            {
+                "type": "checkout.session.async_payment_failed",
+                "data": {"object": {"id": "cs_async_failed"}},
+            }
+        )
+
+        purchase.refresh_from_db()
+        self.assertEqual(purchase.status, CoursePurchase.Status.FAILED)
+        self.assertFalse(self.course._user_has_access(self.user))
+
+    def test_payment_intent_failed_marks_purchase_failed_with_metadata_fallback(self):
+        purchase = self._create_purchase(
+            CoursePurchase.Status.PENDING, session_id="cs_pi_failed"
+        )
+
+        self._post_stripe_event(
+            {
+                "type": "payment_intent.payment_failed",
+                "data": {
+                    "object": {
+                        "id": "pi_failed",
+                        "metadata": {
+                            "user_id": str(self.user.id),
+                            "client_reference_id": str(self.user.id),
+                            "purchasable_id": str(self.product.id),
+                        },
+                        "receipt_email": self.user.email,
+                        "charges": {"data": []},
+                    }
+                },
+            }
+        )
+
+        purchase.refresh_from_db()
+        self.assertEqual(purchase.status, CoursePurchase.Status.FAILED)
+        self.assertFalse(self.course._user_has_access(self.user))

purchase/views.py

@@ -52,7 +52,7 @@ def create_checkout_session(request, purchasable_id):
     try:
         purch = PurchasableProduct.objects.get(pk=purchasable_id)
     except PurchasableProduct.DoesNotExist:
-        raise HttpResponse("Purchasable product not found", status=404)
+        return HttpResponse("Purchasable product not found", status=404)
 
     if not purch.stripe_price_id:
         return HttpResponse("Product not configured for Stripe", status=400)
@@ -65,6 +65,13 @@ def create_checkout_session(request, purchasable_id):
             mode="payment",
             client_reference_id=str(request.user.id),
             metadata={"user_id": str(request.user.id), "purchasable_id": str(purch.id)},
+            payment_intent_data={
+                "metadata": {
+                    "user_id": str(request.user.id),
+                    "purchasable_id": str(purch.id),
+                    "client_reference_id": str(request.user.id),
+                }
+            },
             success_url=getattr(
                 settings, "STRIPE_SUCCESS_URL", "https://example.com/success"
             ),
@@ -83,6 +90,7 @@ def create_checkout_session(request, purchasable_id):
                     defaults={
                         "status": CoursePurchase.Status.PENDING,
                         "stripe_checkout_session_id": session.id,
+                        "stripe_payment_intent_id": session.payment_intent,
                     },
                 )
         except IntegrityError:
@@ -95,10 +103,28 @@ def create_checkout_session(request, purchasable_id):
                     stripe_checkout_session_id=session.id
                 ).first()
 
-        # If purchase exists but stripe_checkout_session_id is missing, set it
+        if purchase:
-        if purchase and not purchase.stripe_checkout_session_id:
+            if purchase.status == CoursePurchase.Status.PAID and not purchase.refunded:
+                return redirect(purch.course.url)
+
+            update_fields = []
+            if purchase.status != CoursePurchase.Status.PENDING:
+                purchase.status = CoursePurchase.Status.PENDING
+                update_fields.append("status")
+            if purchase.refunded:
+                purchase.refunded = False
+                update_fields.append("refunded")
+            if purchase.stripe_checkout_session_id != session.id:
                 purchase.stripe_checkout_session_id = session.id
-            purchase.save(update_fields=["stripe_checkout_session_id"])
+                update_fields.append("stripe_checkout_session_id")
+            if purchase.stripe_payment_intent_id is not None:
+                purchase.stripe_payment_intent_id = None
+                update_fields.append("stripe_payment_intent_id")
+            if purchase.stripe_charge_id is not None:
+                purchase.stripe_charge_id = None
+                update_fields.append("stripe_charge_id")
+            if update_fields:
+                purchase.save(update_fields=update_fields)
 
         # Redirect to Stripe Checkout
         return redirect(session.url)
@@ -107,7 +133,6 @@ def create_checkout_session(request, purchasable_id):
             f"Failed to create checkout session for purchasable {purchasable_id}: {e}"
         )
         raise e
-        # return HttpResponse(status=500)
 
 
 @csrf_exempt
@@ -132,26 +157,121 @@ def stripe_webhook(request):
             )
     except ValueError as e:
         logger.error(f"Invalid payload: {e}")
-        # return HttpResponse(status=400)
         raise e
     except stripe.error.SignatureVerificationError as e:
         logger.error(f"Webhook signature verification failed: {e}")
-        # return HttpResponse(status=400)
         raise e
 
+    # Helper to safely index Stripe objects / nested dict-like objects using [] semantics
+    def _s(obj, key):
+        try:
+            return obj[key]
+        except Exception:
+            return None
+
     # Handle the event
     logger.info(f"Received Stripe event: {event['type']}")
 
+    # Helper to mark a purchase refunded by Stripe identifiers
+    def _mark_purchase_refunded(purchase):
+        if not purchase:
+            return
+        purchase.refunded = True
+        purchase.status = CoursePurchase.Status.REFUNDED
+        # Save normally so our CoursePurchase.save() logic runs (this will remove groups/gitea membership)
+        purchase.save()
+        logger.info(
+            f"Marked CoursePurchase {purchase.id} as REFUNDED due to Stripe event"
+        )
+
+    def _find_purchase_from_payment_intent(pi):
+        pi_id = _s(pi, "id")
+        metadata = _s(pi, "metadata") or {}
+
+        purchase = None
+
+        session_id = (
+            _s(metadata, "checkout_session")
+            or _s(metadata, "session_id")
+            or _s(metadata, "stripe_checkout_session_id")
+        )
+        if session_id:
+            purchase = CoursePurchase.objects.filter(
+                stripe_checkout_session_id=session_id
+            ).first()
+
+        if not purchase and pi_id:
+            purchase = CoursePurchase.objects.filter(
+                stripe_payment_intent_id=pi_id
+            ).first()
+
+        from django.contrib.auth import get_user_model
+
+        User = get_user_model()
+        user = None
+
+        user_id = _s(metadata, "user_id")
+        if user_id:
+            try:
+                user = User.objects.get(pk=int(user_id))
+            except Exception:
+                user = None
+
+        if not user:
+            client_ref = _s(metadata, "client_reference_id") or _s(
+                metadata, "client_id"
+            )
+            if client_ref:
+                try:
+                    user = User.objects.get(pk=int(client_ref))
+                except Exception:
+                    user = None
+
+        if not user:
+            email = _s(pi, "receipt_email")
+            if not email:
+                charges = _s(_s(pi, "charges") or {}, "data") or []
+                if charges:
+                    billing = _s(charges[0], "billing_details") or {}
+                    email = _s(billing, "email")
+            if email:
+                user = User.objects.filter(email=email).first()
+
+        course = None
+        purchasable_id = _s(metadata, "purchasable_id")
+        if purchasable_id:
+            try:
+                purch = PurchasableProduct.objects.get(pk=int(purchasable_id))
+                course = purch.course
+            except Exception:
+                course = None
+
+        if not purchase and user and course:
+            purchase = (
+                CoursePurchase.objects.filter(user=user, course=course, refunded=False)
+                .order_by("-id")
+                .first()
+            )
+
+        return purchase
+
+    # Handle checkout session completion: ensure purchase exists and store PaymentIntent / Charge ids
     if event["type"] == "checkout.session.completed":
         session = event["data"]["object"]
-        session_id = session.get("id")
+        session_id = session["id"]
+        payment_status = _s(session, "payment_status")
         logger.info(f"Checkout session completed: {session}")
 
-        # Try to find the CoursePurchase by Stripe session ID first
+        # First try to find existing CoursePurchase by session id
-        try:
+        purchase = CoursePurchase.objects.filter(
-            purchase = CoursePurchase.objects.get(stripe_checkout_session_id=session_id)
+            stripe_checkout_session_id=session_id
+        ).first()
+        if purchase:
             updated = False
-            if purchase.status != CoursePurchase.Status.PAID:
+            if (
+                payment_status == "paid"
+                and purchase.status != CoursePurchase.Status.PAID
+            ):
                 purchase.status = CoursePurchase.Status.PAID
                 updated = True
             if purchase.refunded:
@@ -159,11 +279,17 @@ def stripe_webhook(request):
                 updated = True
             if updated:
                 purchase.save(update_fields=["status", "refunded"])
+            if payment_status == "paid":
                 logger.info(f"Marked CoursePurchase {purchase.id} as PAID.")
-        except CoursePurchase.DoesNotExist:
+            else:
+                logger.info(
+                    "Processed checkout.session.completed for CoursePurchase %s without changing status (payment_status=%s).",
+                    purchase.id,
+                    payment_status,
+                )
+        else:
             # No existing purchase — attempt to create one by inspecting the Stripe session
             try:
-                # Retrieve expanded session to inspect line items and product metadata
                 session_obj = stripe.checkout.Session.retrieve(
                     session_id,
                     expand=[
@@ -178,48 +304,49 @@ def stripe_webhook(request):
 
                 User = get_user_model()
                 user = None
-                metadata = session_obj.get("metadata") or {}
+
+                metadata = _s(session_obj, "metadata") or {}
 
                 # Prefer explicit user_id in metadata
-                if metadata.get("user_id"):
+                user_id = _s(metadata, "user_id")
+                if user_id:
                     try:
-                        user = User.objects.get(pk=int(metadata.get("user_id")))
+                        user = User.objects.get(pk=int(user_id))
                     except Exception:
                         user = None
 
                 # Fallback to client_reference_id (often used to pass local user id)
-                if not user and session_obj.get("client_reference_id"):
+                if not user:
+                    client_ref = _s(session_obj, "client_reference_id")
+                    if client_ref:
                         try:
-                        user = User.objects.get(
+                            user = User.objects.get(pk=int(client_ref))
-                            pk=int(session_obj.get("client_reference_id"))
-                        )
                         except Exception:
                             user = None
 
                 # Fallback to customer email
                 if not user:
                     email = None
-                    cust_details = session_obj.get("customer_details") or {}
+                    cust_details = _s(session_obj, "customer_details") or {}
-                    if cust_details.get("email"):
+                    email = _s(cust_details, "email") or _s(
-                        email = cust_details.get("email")
+                        session_obj, "customer_email"
-                    elif session_obj.get("customer_email"):
+                    )
-                        email = session_obj.get("customer_email")
+                    if not email:
-                    elif isinstance(session_obj.get("customer"), dict) and session_obj[
+                        customer = _s(session_obj, "customer")
-                        "customer"
+                        if isinstance(customer, dict):
-                    ].get("email"):
+                            email = _s(customer, "email")
-                        email = session_obj["customer"].get("email")
 
                     if email:
                         user = User.objects.filter(email=email).first()
 
                 # Find the purchasable product from line items using product.metadata.local_id
                 course = None
-                line_items = (session_obj.get("line_items") or {}).get("data", [])
+                line_items = _s(_s(session_obj, "line_items") or {}, "data") or []
                 for item in line_items:
-                    price = item.get("price") or {}
+                    price = _s(item, "price") or {}
-                    product = price.get("product")
+                    product = _s(price, "product")
                     if isinstance(product, dict):
-                        local_id = (product.get("metadata") or {}).get("local_id")
+                        local_id = _s(_s(product, "metadata") or {}, "local_id")
                         if local_id:
                             try:
                                 purch = PurchasableProduct.objects.get(pk=int(local_id))
@@ -235,7 +362,11 @@ def stripe_webhook(request):
                                 user=user,
                                 course=course,
                                 defaults={
-                                    "status": CoursePurchase.Status.PAID,
+                                    "status": (
+                                        CoursePurchase.Status.PAID
+                                        if payment_status == "paid"
+                                        else CoursePurchase.Status.PENDING
+                                    ),
                                     "refunded": False,
                                     "stripe_checkout_session_id": session_id,
                                 },
@@ -253,7 +384,10 @@ def stripe_webhook(request):
                     if purchase:
                         # Ensure fields are up to date idempotently
                         update_fields = []
-                        if purchase.status != CoursePurchase.Status.PAID:
+                        if (
+                            payment_status == "paid"
+                            and purchase.status != CoursePurchase.Status.PAID
+                        ):
                             purchase.status = CoursePurchase.Status.PAID
                             update_fields.append("status")
                         if purchase.refunded:
@@ -263,6 +397,27 @@ def stripe_webhook(request):
                             purchase.stripe_checkout_session_id = session_id
                             update_fields.append("stripe_checkout_session_id")
 
+                        # Store PaymentIntent and Charge (if present) for later refund handling
+                        pi = _s(session_obj, "payment_intent")
+                        if pi and not purchase.stripe_payment_intent_id:
+                            purchase.stripe_payment_intent_id = pi
+                            update_fields.append("stripe_payment_intent_id")
+                            # Try to obtain charge id from PaymentIntent
+                            try:
+                                pi_obj = stripe.PaymentIntent.retrieve(
+                                    pi, expand=["charges.data"]
+                                )
+                                charges = _s(_s(pi_obj, "charges") or {}, "data") or []
+                                if charges:
+                                    charge_id = _s(charges[0], "id")
+                                    if charge_id and not purchase.stripe_charge_id:
+                                        purchase.stripe_charge_id = charge_id
+                                        update_fields.append("stripe_charge_id")
+                            except Exception:
+                                logger.exception(
+                                    "Failed to retrieve PaymentIntent/charges for storing charge id"
+                                )
+
                         if update_fields:
                             purchase.save(update_fields=update_fields)
                             logger.info(
@@ -301,6 +456,35 @@ def stripe_webhook(request):
                     f"Failed to create CoursePurchase for session {session_id}: {e}"
                 )
 
+    # Refund-related events: charge.refunded, refund.created, refund.updated
+    elif event["type"] in ("charge.refunded", "refund.created", "refund.updated"):
+        obj = event["data"]["object"]
+        # obj may be a Charge (for charge.refunded) or a Refund (for refund.*)
+        obj_object = _s(obj, "object")
+        if obj_object == "charge":
+            charge_id = _s(obj, "id")
+        else:
+            charge_id = _s(obj, "charge")
+        payment_intent_id = _s(obj, "payment_intent")
+
+        # Try to find the CoursePurchase by charge id or payment_intent
+        purchase = None
+        if charge_id:
+            purchase = CoursePurchase.objects.filter(stripe_charge_id=charge_id).first()
+        if not purchase and payment_intent_id:
+            purchase = CoursePurchase.objects.filter(
+                stripe_payment_intent_id=payment_intent_id
+            ).first()
+
+        if purchase:
+            _mark_purchase_refunded(purchase)
+        else:
+            logger.warning(
+                "Received refund webhook but could not find CoursePurchase for charge=%s pi=%s",
+                charge_id,
+                payment_intent_id,
+            )
+
     elif event["type"] == "checkout.session.expired":
         session = event["data"]["object"]
         session_id = session["id"]
@@ -340,5 +524,105 @@ def stripe_webhook(request):
             logger.warning(
                 f"No CoursePurchase found for async succeeded session {session_id}"
             )
+    elif event["type"] == "payment_intent.created":
+        pi = event["data"]["object"]
+        pi_id = pi["id"]
+        purchase = None
+        try:
+            # Try to find CoursePurchase by checkout session id present in PaymentIntent metadata
+            metadata = _s(pi, "metadata") or {}
+            session_id = (
+                _s(metadata, "checkout_session")
+                or _s(metadata, "session_id")
+                or _s(metadata, "stripe_checkout_session_id")
+            )
+            if session_id:
+                purchase = CoursePurchase.objects.filter(
+                    stripe_checkout_session_id=session_id
+                ).first()
+
+            # Fallback: try client_reference_id (may be copied into metadata)
+            if not purchase:
+                client_ref = _s(metadata, "client_reference_id") or _s(
+                    metadata, "client_id"
+                )
+                if client_ref:
+                    try:
+                        purchase = (
+                            CoursePurchase.objects.filter(
+                                user__pk=int(client_ref), refunded=False
+                            )
+                            .order_by("-id")
+                            .first()
+                        )
+                    except Exception:
+                        purchase = None
+
+            # Fallback: try receipt email / billing details
+            if not purchase:
+                email = _s(pi, "receipt_email")
+                if not email:
+                    charges = _s(_s(pi, "charges") or {}, "data") or []
+                    if charges:
+                        billing = _s(charges[0], "billing_details") or {}
+                        email = _s(billing, "email")
+                if email:
+                    purchase = (
+                        CoursePurchase.objects.filter(user__email=email, refunded=False)
+                        .order_by("-id")
+                        .first()
+                    )
+
+            if purchase:
+                update_fields = []
+                if not purchase.stripe_payment_intent_id and pi_id:
+                    purchase.stripe_payment_intent_id = pi_id
+                    update_fields.append("stripe_payment_intent_id")
+
+                # If charge id is present in the PaymentIntent payload, store it too
+                charges = _s(_s(pi, "charges") or {}, "data") or []
+                if charges:
+                    charge_id = _s(charges[0], "id")
+                    if charge_id and not purchase.stripe_charge_id:
+                        purchase.stripe_charge_id = charge_id
+                        update_fields.append("stripe_charge_id")
+
+                if update_fields:
+                    purchase.save(update_fields=update_fields)
+                    logger.info(
+                        "Updated CoursePurchase %s with fields %s from payment_intent.created",
+                        purchase.id,
+                        update_fields,
+                    )
+                else:
+                    logger.debug(
+                        "payment_intent.created: CoursePurchase %s already has payment fields set",
+                        purchase.id,
+                    )
+            else:
+                logger.info(
+                    "payment_intent.created: no matching CoursePurchase for pi=%s",
+                    pi_id,
+                )
+                logger.debug("payment_intent.created payload: %s", pi)
+        except Exception:
+            logger.exception("Failed processing payment_intent.created")
+
+    elif event["type"] == "payment_intent.payment_failed":
+        pi = event["data"]["object"]
+        pi_id = pi["id"]
+        try:
+            purchase = _find_purchase_from_payment_intent(pi)
+            if purchase:
+                if purchase.status != CoursePurchase.Status.FAILED:
+                    purchase.status = CoursePurchase.Status.FAILED
+                    purchase.save(update_fields=["status"])
+                logger.info(
+                    f"Marked CoursePurchase {purchase.id} as FAILED (payment intent failed)."
+                )
+            else:
+                raise CoursePurchase.DoesNotExist
+        except CoursePurchase.DoesNotExist:
+            logger.warning(f"No CoursePurchase found for failed payment intent {pi_id}")
 
     return HttpResponse(status=200)