"""Durable ownership of Notify! tiles, including per-print dismissal tombstones.""" from datetime import datetime from sqlalchemy import Column, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint from backend.app.core.database import Base class NotificationLiveActivity(Base): __tablename__ = "notification_live_activities" __table_args__ = (UniqueConstraint("provider_id", "printer_id", "print_key"),) id = Column(Integer, primary_key=True) provider_id = Column( Integer, ForeignKey("notification_providers.id", ondelete="CASCADE"), nullable=False, index=True ) # Keep ownership after printer deletion until the worker ends the remote tile. printer_id = Column(Integer, nullable=False, index=True) print_key = Column(String(200), nullable=False) job_key = Column(String(160), nullable=True) print_name = Column(String(255), nullable=False, default="") eta_seconds = Column(Integer, nullable=True) eta_deadline = Column(DateTime, nullable=True) credential_key = Column(String(64), nullable=False) activity_id = Column(String(16), nullable=True) state = Column(String(20), nullable=False, default="pending") end_reason = Column(String(40), nullable=True) failures = Column(Integer, nullable=False, default=0) content = Column(Text, nullable=False, default="{}") expires_at = Column(DateTime, nullable=True) next_attempt_at = Column(DateTime, nullable=True) last_sent_at = Column(DateTime, nullable=True) created_at = Column(DateTime, nullable=False, default=datetime.utcnow)