"""add invites table — dev SPA 邀请码登录改 DB 后端。

Revision ID: 0005
Revises: 0004
Create Date: 2026-05-19

接 05-19 邀请码登录(`/v1/auth/login_invite`):原 `ZCBOT_INVITES` env 字符串解析撤,
改 `invites` 表。最薄 schema:
- token PK   — login 入口直接查这列
- name UNIQUE — 推导 uuid5 用,同 name = 同 user_id,UNIQUE 防"两 token 同身份"漏
- created_at — 审计

不存 user_id(由 uuid5(NS, name) 推导,namespace 固定不动);不存 revoked_at
(撤销直接 DELETE,5 人级别用户不要软删的额外分支)。
"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = "0005"
down_revision: Union[str, None] = "0004"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "invites",
        sa.Column("token", sa.Text(), primary_key=True),
        sa.Column("name", sa.Text(), nullable=False, unique=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.func.now(),
            nullable=False,
        ),
    )


def downgrade() -> None:
    op.drop_table("invites")