import type { Db } from '../db';
import type { User } from './users';

export interface Shop {
  id: number;
  name: string;
  code: string;
}

interface ShopRow {
  id: number;
  name: string;
  code: string;
}

const toShop = (r: ShopRow): Shop => ({ id: r.id, name: r.name, code: r.code });
export function shopsForUser(db: Db, user: User): Shop[] {
  if (!user.active) return [];

  const rows = user.isAdmin
    ? (db.prepare('SELECT id, name, code FROM shops WHERE active = 1 ORDER BY name, id').all() as ShopRow[])
    : (db
        .prepare(
          `SELECT s.id, s.name, s.code
             FROM shops s
             JOIN user_shops us ON us.shop_id = s.id
            WHERE us.user_id = ? AND s.active = 1
            ORDER BY s.name, s.id`,
        )
        .all(user.id) as ShopRow[]);

  return rows.map(toShop);
}

export function canUseShop(db: Db, user: User, shopId: number): boolean {
  return shopsForUser(db, user).some((s) => s.id === shopId);
}