"""Default deduplication plugin placeholder."""
from dataclasses import dataclass
from typing import Dict, List


@dataclass
class DedupInput:
    article_id: str
    title: str
    link: str
    content: str
    content_length: int
    published_at: str
    feed_id: str


@dataclass
class DuplicateGroup:
    representative_id: str
    member_ids: List[str]
    reason: str
    similarity_scores: Dict[str, float]


class DeduplicationPlugin:
    """Default deduplication plugin."""

    name = "default_placeholder"
    version = "0.1.0"

    def find_duplicates(self, articles: List[DedupInput]) -> List[DuplicateGroup]:
        """Find duplicate articles."""
        # Placeholder implementation
        return []