"""Сервис магазина."""

from __future__ import annotations

from common.models import Donat, Title
from common.repositories import shop_repo


async def list_titles() -> list[Title]:
    rows = await shop_repo.get_titles_list()
    return [Title(id=int(row["i"]), title=row["n"] or "", price=int(row["p"] or 0)) for row in rows]


async def list_donats() -> list[Donat]:
    rows = await shop_repo.get_donats_list()
    return [Donat(id=int(row["i"]), title=row["n"] or "", price=int(row["p"] or 0)) for row in rows]


async def buy_title(id_user: int, id_title: int) -> bool:
    """Купить звание. Возвращает True при успехе."""
    return await shop_repo.buy_title(id_user, id_title) == 1


async def buy_donat(id_user: int, id_donat: int) -> str | None:
    """Купить донат. Возвращает промокод или None при неуспехе."""
    result = await shop_repo.buy_donat(id_user, id_donat)
    if result == "-1":
        return None
    return result