from datetime import datetime

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

from app.database import Base


class WecomBindToken(Base):
    """A single-use, expiring binding token issued after a verified WeCom callback."""

    __tablename__ = "wecom_bind_tokens"

    token: Mapped[str] = mapped_column(String(64), primary_key=True)
    wecom_userid: Mapped[str] = mapped_column(String(100), index=True)
    expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), index=True)
    consumed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())