"""浏览器推送订阅模型"""
from sqlalchemy import Column, String, Text, DateTime, func, JSON
from sqlalchemy.dialects.mysql import CHAR
from app.core.database import Base
import uuid


class PushSubscription(Base):
    __tablename__ = "push_subscriptions"

    id = Column(CHAR(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    user_id = Column(CHAR(36), nullable=True, index=True, comment="关联用户ID")
    endpoint = Column(Text, nullable=False, comment="推送端点URL")
    p256dh = Column(Text, nullable=False, comment="公钥")
    auth = Column(Text, nullable=False, comment="认证密钥")
    user_agent = Column(String(500), nullable=True, comment="设备UA")
    created_at = Column(DateTime, server_default=func.now())
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())