from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, Integer, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base import Base


class Comment(Base):
    __tablename__ = "comments"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    spot_id: Mapped[int] = mapped_column(Integer, ForeignKey("spots.id"), nullable=False, index=True)
    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
    parent_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("comments.id"), nullable=True)
    content: Mapped[str] = mapped_column(Text, nullable=False)
    audit_status: Mapped[str] = mapped_column(String(20), default="approved")
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())

    user = relationship("User", lazy="selectin")
    replies = relationship(
        "Comment",
        back_populates="parent",
        lazy="noload",
        foreign_keys=[parent_id],
    )
    parent = relationship(
        "Comment",
        remote_side=[id],
        back_populates="replies",
        lazy="noload",
    )

    def __repr__(self) -> str:
        return f"<Comment {self.id} spot={self.spot_id}>"