import { defaultMenu, defaultSettings } from "./defaults.js";
import { MenuItem } from "./models/MenuItem.js";
import { Order } from "./models/Order.js";

export function getSettings() {
  return defaultSettings;
}

export async function ensureSeedMenu() {
  const count = await MenuItem.countDocuments();
  if (count === 0) {
    await MenuItem.insertMany(defaultMenu);
  }
}

export async function resetMenuToDefaults() {
  await MenuItem.deleteMany({});
  await MenuItem.insertMany(defaultMenu);
  return MenuItem.find().sort({ category: 1, name: 1 });
}

export async function nextOrderNumber() {
  const latest = await Order.findOne().sort({ number: -1 }).lean();
  return (latest?.number ?? 1000) + 1;
}

export function computeOrderTotal(lines, settings = defaultSettings) {
  return lines.reduce((sum, line) => {
    const sizeDelta = settings.sizeOptions.find((option) => option.name === line.size)?.delta ?? 0;
    const toppings = line.toppings.reduce((toppingSum, toppingName) => {
      return toppingSum + (settings.toppings.find((item) => item.name === toppingName)?.price ?? 0);
    }, 0);
    return sum + line.basePrice + sizeDelta + toppings;
  }, 0);
}