"""Source adapters for AI Research Oracle."""

from abc import ABC, abstractmethod


class SourceAdapter(ABC):
    """Base class for all ingestion adapters."""

    @abstractmethod
    def name(self) -> str:
        """Source name: 'github', 'arxiv', 'reddit'."""
        pass

    @abstractmethod
    def fetch(self, query: str = "", limit: int = 20) -> list[dict]:
        """Return entries matching DB schema fields."""
        pass