from datetime import datetime
from sqlalchemy import DateTime, ForeignKey, Integer, Text, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column
from fabledassistant.models import Base
from fabledassistant.models.base import CreatedAtMixin


class PushSubscription(Base, CreatedAtMixin):
    __tablename__ = "push_subscriptions"
    id: Mapped[int] = mapped_column(primary_key=True)
    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id", ondelete="CASCADE"))
    endpoint: Mapped[str] = mapped_column(Text)
    p256dh: Mapped[str] = mapped_column(Text)
    auth: Mapped[str] = mapped_column(Text)
    user_agent: Mapped[str | None] = mapped_column(Text, nullable=True)
    last_used: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

    __table_args__ = (
        UniqueConstraint("user_id", "endpoint", name="uq_push_subscription_user_endpoint"),
    )