"""Domain entity for CommentLike.

This module defines the CommentLike entity that tracks which users
have liked which comments.
"""

from dataclasses import dataclass
from typing import Any
from uuid import UUID

from app.domain.entities.base import BaseEntity


@dataclass(kw_only=True)
class CommentLike(BaseEntity):
    """Comment like domain entity.

    Tracks a like on a comment by a user. Each like is uniquely
    identified by its entity ID.

    Attributes:
        comment_id: UUID of the liked comment.
        liked_by: Identifier of the user who liked.
    """

    comment_id: UUID
    liked_by: str

    def to_dict(self) -> dict[str, Any]:
        """Convert entity to dictionary.

        Returns:
            Dictionary with all CommentLike attributes.
        """
        return {
            "id": str(self.id),
            "comment_id": str(self.comment_id),
            "liked_by": self.liked_by,
            "created_at": self.created_at.isoformat(),
        }