def _validate_messages()

in aidial_assistant/application/assistant_application.py [0:0]

• 9 lines of code
• 3 McCabe index (conditional complexity)

def _validate_messages(messages: list[Message]) -> None:
    if not messages:
        raise RequestParameterValidationError(
            "Message list cannot be empty.", param="messages"
        )

    if messages[-1].role != Role.USER:
        raise RequestParameterValidationError(
            "Last message must be from the user.", param="messages"
        )