Fix timestamp handling in customer endpoints

app/auth.py

@@ -117,11 +117,14 @@ async def create_customer(
             )
         
         # Create new customer
+        now = datetime.utcnow()
         customer = CustomerModel(
             name=customer_data["name"],
             company_name=customer_data["company_name"],
             email=customer_data["email"],
-            api_key=str(secrets.token_urlsafe(32))
+            api_key=str(secrets.token_urlsafe(32)),
+            created_at=now,
+            updated_at=now
         )
         
         db.add(customer)
@@ -134,7 +137,9 @@ async def create_customer(
             "company_name": customer.company_name,
             "email": customer.email,
             "api_key": customer.api_key,
-            "is_active": customer.is_active
+            "is_active": customer.is_active,
+            "created_at": customer.created_at,
+            "updated_at": customer.updated_at
         }
     except HTTPException as he:
         raise he
@@ -161,8 +166,8 @@ async def list_customers(
                 email=customer.email,
                 api_key=customer.api_key,
                 is_active=customer.is_active,
-                created_at=customer.created_at,
-                updated_at=customer.updated_at
+                created_at=customer.created_at or datetime.utcnow(),
+                updated_at=customer.updated_at or datetime.utcnow()
             ) for customer in customers
         ]
     except Exception as e:

app/schemas.py

@@ -1,4 +1,4 @@
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
 from typing import Optional
 from datetime import datetime
 
@@ -14,8 +14,8 @@ class Customer(CustomerBase):
     id: int
     api_key: str
     is_active: bool
-    created_at: datetime
-    updated_at: datetime
+    created_at: Optional[datetime] = Field(default_factory=datetime.utcnow)
+    updated_at: Optional[datetime] = Field(default_factory=datetime.utcnow)
 
     class Config:
         from_attributes = True
@@ -34,8 +34,8 @@ class CallRecordCreate(CallRecordBase):
 class CallRecord(CallRecordBase):
     id: str
     customer_id: int
-    created_at: datetime
-    updated_at: datetime
+    created_at: Optional[datetime] = Field(default_factory=datetime.utcnow)
+    updated_at: Optional[datetime] = Field(default_factory=datetime.utcnow)
 
     class Config:
         from_attributes = True