"""Notification model."""
from datetime import datetime

from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Integer, String, Text
from sqlalchemy.orm import relationship

from app.db.session import Base


class Notification(Base):
    """Notification model for in-app notifications."""

    __tablename__ = "notifications"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    type = Column(String(50), nullable=False)  # booking_created, booking_approved, etc
    title = Column(String(200), nullable=False)
    message = Column(Text, nullable=False)
    booking_id = Column(Integer, ForeignKey("bookings.id"), nullable=True)
    is_read = Column(Boolean, default=False, nullable=False)
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)

    # Relationships
    user = relationship("User", back_populates="notifications")
    booking = relationship("Booking", back_populates="notifications")