from __future__ import annotations
from abc import ABC, abstractmethod
from pydantic import BaseModel


class ChatModel(ABC):

    @abstractmethod
    def structured(self, messages: list[dict], schema: type[BaseModel]) -> BaseModel:
        """Call the model and return a validated Pydantic instance."""

    @abstractmethod
    def complete(self, messages: list[dict]) -> str:
        """Call the model and return raw text content."""