"""用户表。

登录方式有两种,但都映射到同一行 user:
  - 极光一键登录 → phone 唯一索引
  - 短信验证码登录(mock 阶段)  → 也是 phone 唯一索引
注册即登录:phone 不存在则 insert,存在则更新 last_login_at。

后续如果加微信/Apple 登录,新增 oauth_account 表,这张表不动。
"""
from __future__ import annotations

from datetime import datetime, timezone

from sqlalchemy import DateTime, Integer, String, func
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base


def _utcnow() -> datetime:
    return datetime.now(timezone.utc)


class User(Base):
    __tablename__ = "user"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    phone: Mapped[str] = mapped_column(String(20), unique=True, index=True, nullable=False)

    # 注册渠道:jverify / sms。后续加 wechat / apple 时扩
    register_channel: Mapped[str] = mapped_column(String(20), nullable=False, default="jverify")

    nickname: Mapped[str | None] = mapped_column(String(64), nullable=True)
    avatar_url: Mapped[str | None] = mapped_column(String(512), nullable=True)

    # 账号状态:active / disabled / deleted
    status: Mapped[str] = mapped_column(String(20), nullable=False, default="active")

    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )
    last_login_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=_utcnow, nullable=False
    )

    def __repr__(self) -> str:  # pragma: no cover
        return f"<User id={self.id} phone={self.phone}>"