API

app.py

@@ -162,7 +162,10 @@ async def login(customer_id: str):
             customer_data = purchase_history[purchase_history['Customer_Id'] == customer_id]
             total_purchases = len(customer_data)
             total_spent = customer_data['Amount (In Dollars)'].sum()
-            last_purchase = customer_data['Purchase_Date'].max().strftime('%Y-%m-%d')
+            
+            # Convert last purchase date to datetime if it's not already
+            last_purchase = pd.to_datetime(customer_data['Purchase_Date'].max())
+            last_purchase_str = last_purchase.strftime('%Y-%m-%d')
             
             return JSONResponse(
                 status_code=status.HTTP_200_OK,
@@ -173,7 +176,7 @@ async def login(customer_id: str):
                     "customer_stats": {
                         "total_purchases": total_purchases,
                         "total_spent": float(total_spent),
-                        "last_purchase_date": last_purchase
+                        "last_purchase_date": last_purchase_str
                     }
                 }
             )