from __future__ import annotations

from app.database.lazer_user import User
from app.dependencies.database import get_db
from app.dependencies.user import get_client_user

from .router import router

from fastapi import Body, Depends, HTTPException, Security
from sqlmodel import select
from sqlmodel.ext.asyncio.session import AsyncSession


@router.post(
    "/rename",
    name="修改用户名",
)
async def user_rename(
    new_name: str = Body(..., description="新的用户名"),
    session: AsyncSession = Depends(get_db),
    current_user: User = Security(get_client_user),
):
    """修改用户名

    为指定用户修改用户名，并将原用户名添加到历史用户名列表中

    错误情况:
    - 404: 找不到指定用户
    - 409: 新用户名已被占用

    返回:
    - 成功: None
    """
    samename_user = (
        await session.exec(select(User).where(User.username == new_name))
    ).first()
    if samename_user:
        raise HTTPException(409, "Username Exisits")
    current_user.previous_usernames.append(current_user.username)
    current_user.username = new_name
    await session.commit()
    return None