import uuid
from datetime import datetime
from sqlalchemy import String, DateTime, Text, ForeignKey
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship
from ..database import Base


class Message(Base):
    __tablename__ = "messages"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    room_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("rooms.id"), nullable=False)
    user_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
    text: Mapped[str] = mapped_column(Text, nullable=False)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)

    # Relationships
    room = relationship("Room", back_populates="messages")
    user = relationship("User", back_populates="messages")