64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
from __future__ import annotations
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from datetime import datetime
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from typing import Literal
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from sqlalchemy import Boolean, DateTime, Enum, Index, String, UniqueConstraint, func
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from sqlalchemy.orm import Mapped, mapped_column
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from app.db.base import Base
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PushEnv = Literal["dev", "prod"]
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PushPlatform = Literal["ios", "android"]
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class PushToken(Base):
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"""
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Push Token 绑定表（Expo Push Token）。
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约束：
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- token 在同一 env + app_id 下必须唯一（避免重复推送）
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- 同一 client_user_id 可能会更新 token（重装/轮换/重新授权）
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"""
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__tablename__ = "push_tokens"
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__table_args__ = (
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UniqueConstraint("env", "app_id", "push_token", name="uniq_env_app_token"),
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Index("idx_push_tokens_client_user_id", "client_user_id"),
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Index("idx_push_tokens_is_active", "is_active"),
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)
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id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True, comment="主键")
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client_user_id: Mapped[str] = mapped_column(String(length=64), nullable=False, comment="客户端用户标识（UUID）")
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platform: Mapped[PushPlatform] = mapped_column(
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Enum("ios", "android", name="push_platform"),
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nullable=False,
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comment="平台",
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)
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push_token: Mapped[str] = mapped_column(String(length=255), nullable=False, comment="Expo Push Token")
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app_id: Mapped[str] = mapped_column(String(length=255), nullable=False, comment="bundle id / package name（用于隔离）")
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env: Mapped[PushEnv] = mapped_column(
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Enum("dev", "prod", name="push_env"),
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nullable=False,
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comment="环境隔离",
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)
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is_active: Mapped[bool] = mapped_column(
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Boolean,
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nullable=False,
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server_default="1",
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comment="是否有效（发送失败且不可恢复时置为 false）",
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)
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last_seen_at: Mapped[datetime] = mapped_column(
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DateTime,
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nullable=False,
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server_default=func.now(),
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server_onupdate=func.now(),
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comment="最后一次上报时间",
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)
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