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

export class ShopNotAllowedError extends Error {
  constructor() {
    super('user cannot use this shop');
    this.name = 'ShopNotAllowedError';
  }
}

export interface SaveOrderInput {
  user: User;
  shopId: number;
  drawDate: string;
  rawText: string;
  lines: { ending: string; qty: number }[];
  source?: 'whatsapp_text' | 'whatsapp_photo';
}
export function saveOrder(db: Db, input: SaveOrderInput): number {
  const run = db.transaction((): number => {
    if (!canUseShop(db, input.user, input.shopId)) throw new ShopNotAllowedError();

    const orderId = Number(
      db
        .prepare(
          `INSERT INTO orders (shop_id, draw_date, source, created_by_user_id, raw_text)
           VALUES (?, ?, ?, ?, ?)`,
        )
        .run(input.shopId, input.drawDate, input.source ?? 'whatsapp_text', input.user.id, input.rawText)
        .lastInsertRowid,
    );

    const insertLine = db.prepare('INSERT INTO order_lines (order_id, ending, qty) VALUES (?, ?, ?)');
    for (const l of input.lines) insertLine.run(orderId, l.ending, l.qty);
    return orderId;
  });
  return run();
}