"""
Доменная сущность чанка
"""
from datetime import datetime
from uuid import UUID, uuid4
from typing import Any


class DocumentChunk:

    def __init__(
        self,
        document_id: UUID,
        collection_id: UUID,
        content: str,
        chunk_id: UUID | None = None,
        order: int = 0,
        metadata: dict[str, Any] | None = None,
        created_at: datetime | None = None,
    ):
        self.chunk_id = chunk_id or uuid4()
        self.document_id = document_id
        self.collection_id = collection_id
        self.content = content
        self.order = order
        self.metadata = metadata or {}
        self.created_at = created_at or datetime.utcnow()