Fix redirect after purchase to check for digital products properly

- Add check for is_physical=False in addition to has_product_file
- Add detailed logging to diagnose redirect issues
- Physical products should always redirect to invoice
- Digital products without files should redirect to invoice
- Only digital products with files should redirect to product page

make_post_sell/views/cart.py

@@ -48,15 +48,34 @@ def get_smart_purchase_redirect_url(invoices):
     - Invoice URL if multiple products or physical products
     - General purchases page as fallback
     """
+    import logging
+    logger = logging.getLogger(__name__)
+    
     # Handle single invoice with single digital product
     if len(invoices) == 1:
         invoice = invoices[0]
         line_items = list(invoice.line_items)
+        
+        logger.info(f"Smart redirect check - Invoice {invoice.id} has {len(line_items)} line items")
 
         # Single digital product - redirect to download page
-        if len(line_items) == 1 and line_items[0].product.has_product_file:
+        if len(line_items) == 1:
             product = line_items[0].product
-            return f"/p/{product.id}/{product.slug}"
+            logger.info(f"Single product: {product.title} (ID: {product.id})")
+            logger.info(f"Is physical: {product.is_physical}")
+            logger.info(f"Has product file: {product.has_product_file}")
+            logger.info(f"Product extensions: {product.extensions}")
+            
+            # Check if it's a digital product with a file
+            if not product.is_physical and product.has_product_file:
+                redirect_url = f"/p/{product.id}/{product.slug}"
+                logger.info(f"Redirecting to product page: {redirect_url}")
+                return redirect_url
+            else:
+                if product.is_physical:
+                    logger.info(f"Product is physical, redirecting to invoice")
+                else:
+                    logger.info(f"Digital product has no file, redirecting to invoice")
 
         # Multiple products or physical products - redirect to invoice
         return f"/invoice/{invoice.id}"