from dataclasses import dataclass
from uuid import UUID

from .db import get_db


@dataclass
class User:
    user_id: UUID
    nickname: str


def get_user(user_id: str) -> User | None:
    try:
        user_id = UUID(user_id)
    except:
        return None

    db = get_db()
    cur = db.execute("SELECT * FROM users WHERE user_id = ?", [str(user_id)])
    user_row = cur.fetchone()
    if user_row is None:
        return None

    return User(UUID(user_row[0]), user_row[1])