from sqlalchemy import Column, String, DateTime, Text, ForeignKey
from sqlalchemy.dialects.postgresql import UUID
from uuid import uuid4
from datetime import datetime
from ..database import Base


class Comment(Base):
    __tablename__ = "comments"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid4)
    stream_id = Column(UUID(as_uuid=True), ForeignKey("streams.id", ondelete="CASCADE"), nullable=False, index=True)
    user_id = Column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    username = Column(String(255), nullable=False)
    content = Column(Text, nullable=False)
    created_at = Column(DateTime(timezone=True), default=datetime.utcnow)
    updated_at = Column(DateTime(timezone=True), default=datetime.utcnow, onupdate=datetime.utcnow)
    parent_id = Column(UUID(as_uuid=True), ForeignKey("comments.id", ondelete="CASCADE"), index=True)