/** Shared client-side catalog search (catalog.dedupe2.json). */

let catalogPromise = null;

export function loadSearchCatalog() {
  if (!catalogPromise) {
    catalogPromise = fetch("/data/catalog.dedupe2.json")
      .then((r) => {
        if (!r.ok) throw new Error("catalog fetch failed");
        return r.json();
      })
      .then((data) => data.products || []);
  }
  return catalogPromise;
}

export function displayName(p) {
  const variants = p.colorVariants;
  let title = p.name;
  if (variants && variants.length >= 2) {
    const shade = variants.find((v) => v.slug === p.slug)?.shade;
    if (shade) {
      const trimmed = p.name.trim();
      if (trimmed.endsWith(shade)) title = trimmed.slice(0, -shade.length).trim();
    }
  }
  const fa = p.categoryFa || null;
  if (fa && !title.includes(fa)) return `\u2067${fa} · \u2066${title}\u2069\u2069`;
  return title;
}

export function searchCatalogProducts(products, query, limit) {
  const needle = String(query || "").trim().toLowerCase();
  if (!needle) return [];
  const hits = products.filter((p) => {
    const hay = `${p.name} ${p.category || ""} ${p.categoryFa || ""}`.toLowerCase();
    return hay.includes(needle);
  });
  return limit != null ? hits.slice(0, limit) : hits;
}

export function formatSearchPrice(price) {
  const amount = Number.isFinite(price) ? Math.round(price) : 0;
  return `${new Intl.NumberFormat("fa-IR", { maximumFractionDigits: 0 }).format(amount)} تومان`;
}

export function escapeSearchHtml(s) {
  return String(s)
    .replaceAll("&", "&")
    .replaceAll("<", "&lt;")
    .replaceAll(">", "&gt;")
    .replaceAll('"', "&quot;");
}