Fix customer list endpoint and add database health check

app/auth.py

@@ -145,7 +145,7 @@ async def create_customer(
             detail=f"Error creating customer: {str(e)}"
         )
 
-@router.get("/customers/", response_model=List[CustomerSchema])
+@router.get("/customers/", response_model=List[Customer])
 async def list_customers(
     db: Session = Depends(get_db),
     current_admin: str = Depends(get_current_admin)
@@ -153,7 +153,18 @@ async def list_customers(
     """List all customers"""
     try:
         customers = db.query(Customer).all()
-        return customers
+        return [
+            Customer(
+                id=customer.id,
+                name=customer.name,
+                company_name=customer.company_name,
+                email=customer.email,
+                api_key=customer.api_key,
+                is_active=customer.is_active,
+                created_at=customer.created_at,
+                updated_at=customer.updated_at
+            ) for customer in customers
+        ]
     except Exception as e:
         print(f"Error listing customers: {str(e)}")
         raise HTTPException(

main.py

@@ -264,21 +264,52 @@ async def login_for_access_token(form_data: OAuth2PasswordRequestForm = Depends(
 
 @app.post("/api/v1/customers/", response_model=Customer)
 async def create_customer(
-    customer: Customer,
+    customer: CustomerCreate,
     db: Session = Depends(get_db),
     current_admin: str = Depends(get_current_admin)
 ):
     """Create new customer"""
-    db_customer = Customer(
-        name=customer.name,
-        company_name=customer.company_name,
-        email=customer.email,
-        api_key=str(uuid.uuid4())
-    )
-    db.add(db_customer)
-    db.commit()
-    db.refresh(db_customer)
-    return db_customer
+    try:
+        # Check if email already exists
+        existing_customer = db.query(CustomerModel).filter(CustomerModel.email == customer.email).first()
+        if existing_customer:
+            raise HTTPException(
+                status_code=400,
+                detail="Email already registered"
+            )
+
+        # Create new customer
+        db_customer = CustomerModel(
+            name=customer.name,
+            company_name=customer.company_name,
+            email=customer.email,
+            api_key=str(uuid.uuid4()),
+            is_active=True,
+            created_at=datetime.utcnow(),
+            updated_at=datetime.utcnow()
+        )
+        
+        db.add(db_customer)
+        db.commit()
+        db.refresh(db_customer)
+        
+        return Customer(
+            id=db_customer.id,
+            name=db_customer.name,
+            company_name=db_customer.company_name,
+            email=db_customer.email,
+            api_key=db_customer.api_key,
+            is_active=db_customer.is_active,
+            created_at=db_customer.created_at,
+            updated_at=db_customer.updated_at
+        )
+    except HTTPException as he:
+        raise he
+    except Exception as e:
+        raise HTTPException(
+            status_code=500,
+            detail=f"Failed to create customer: {str(e)}"
+        )
 
 @app.get("/api/v1/calls", response_model=List[CallRecord])
 async def get_calls(
@@ -306,9 +337,20 @@ async def search_calls(
     return customer.search_calls(query)
 
 @app.get("/api/v1/health")
-async def health_check():
-    """Health check endpoint"""
-    return {"status": "healthy"}
+async def health_check(db: Session = Depends(get_db)):
+    """Health check endpoint to verify database connection"""
+    try:
+        # Test database connection
+        db.execute("SELECT 1")
+        return {
+            "status": "healthy",
+            "database": "connected"
+        }
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+            detail=f"Database connection error: {str(e)}"
+        )
 
 @app.get("/api/v1/customers", response_model=List[Customer])
 async def list_customers(
@@ -318,7 +360,16 @@ async def list_customers(
     """List all customers"""
     try:
         customers = db.query(CustomerModel).all()
-        return customers
+        return [Customer(
+            id=c.id,
+            name=c.name,
+            company_name=c.company_name,
+            email=c.email,
+            api_key=c.api_key,
+            is_active=c.is_active,
+            created_at=c.created_at,
+            updated_at=c.updated_at
+        ) for c in customers]
     except Exception as e:
         raise HTTPException(
             status_code=500,