/**
 * Sync HeaderMenu children of the "Services" menu item
 * to match the current list of services in the database.
 *
 * Strategy:
 *  - Find the HeaderMenu item whose url === '/services'
 *  - Delete all its direct children
 *  - Re-create one child per service item (url = /services/<slug>)
 */

const HeaderMenu = require("../models/headerMenu");
const slugify = require("slugify");

/**
 * @param {Array} serviceItems  - array of service objects { slug, name }
 */
const syncServiceMenu = async (serviceItems = []) => {
  try {
    // 1. Find the "Services" parent menu item
    const servicesParent = await HeaderMenu.findOne({ url: "/services" });

    if (!servicesParent) {
      console.warn("[syncServiceMenu] No HeaderMenu item with url=/services found. Skipping sync.");
      return;
    }

    const parentId = servicesParent._id;

    // 2. Remove all existing children of that parent
    await HeaderMenu.deleteMany({ parentId });

    // 3. Re-create one child per service
    const ops = serviceItems
      .filter((s) => s && s.slug && s.name)
      .map((s, index) => ({
        title: s.name,
        slug: slugify(s.name, { lower: true, strict: true }),
        url: `/services/details/${s.slug}`,
        parentId,
        order: index + 1,
        status: "active",
        type: "internal",
        is_maintainance: false,
      }));

    if (ops.length > 0) {
      await HeaderMenu.insertMany(ops);
    }

    console.log(`[syncServiceMenu] Synced ${ops.length} service menu items under parentId=${parentId}`);
  } catch (err) {
    // Non-fatal – log but don't crash the main request
    console.error("[syncServiceMenu] Error syncing service menu:", err.message);
  }
};

module.exports = syncServiceMenu;