from abc import ABC, abstractmethod
from typing import TypeVar, Type
from pydantic import BaseModel

T = TypeVar('T', bound=BaseModel)

class LLMProvider(ABC):
    @abstractmethod
    async def generate_structured(
        self,
        prompt: str,
        response_schema: Type[T],
        temperature: float = 0.1,
    ) -> T:
        """Generate structured output validated against a Pydantic schema."""
        pass

    @abstractmethod
    async def generate_text(
        self,
        prompt: str,
        temperature: float = 0.3,
    ) -> str:
        """Generate free-form text."""
        pass