import type { MetadataRoute } from "next";
import { absoluteUrl } from "@/lib/seo";

/**
 * /sitemap.xml — the public, indexable surface only.
 *
 * Authed routes, auth screens and unlisted /p/<shareId> share pages are
 * deliberately absent: they are `noindex` and disallowed in robots.ts, and a
 * sitemap that lists non-indexable URLs is a Search Console error.
 */

/** Legal pages change rarely; keep their stamp tied to the published revision. */
const LEGAL_UPDATED = new Date("2026-06-07T00:00:00.000Z");

type Entry = {
  path: string;
  priority: number;
  changeFrequency: MetadataRoute.Sitemap[number]["changeFrequency"];
  lastModified: Date;
};

const NOW = new Date();

const ROUTES: Entry[] = [
  { path: "/", priority: 1.0, changeFrequency: "weekly", lastModified: NOW },
  { path: "/features", priority: 0.9, changeFrequency: "monthly", lastModified: NOW },
  { path: "/pricing", priority: 0.9, changeFrequency: "monthly", lastModified: NOW },
  { path: "/faq", priority: 0.8, changeFrequency: "monthly", lastModified: NOW },
  { path: "/about", priority: 0.6, changeFrequency: "yearly", lastModified: NOW },
  { path: "/terms", priority: 0.3, changeFrequency: "yearly", lastModified: LEGAL_UPDATED },
  { path: "/privacy", priority: 0.3, changeFrequency: "yearly", lastModified: LEGAL_UPDATED },
  { path: "/cookies", priority: 0.3, changeFrequency: "yearly", lastModified: LEGAL_UPDATED },
  { path: "/acceptable-use", priority: 0.3, changeFrequency: "yearly", lastModified: LEGAL_UPDATED },
  { path: "/refunds", priority: 0.3, changeFrequency: "yearly", lastModified: LEGAL_UPDATED },
  { path: "/subprocessors", priority: 0.3, changeFrequency: "yearly", lastModified: LEGAL_UPDATED },
];

export default function sitemap(): MetadataRoute.Sitemap {
  return ROUTES.map(({ path, ...rest }) => ({ url: absoluteUrl(path), ...rest }));
}