import { getSEOSettingsGlobal } from "@/lib/payload/globals";
import { siteConfig } from "@/lib/site";

function stripTrailingSlash(url: string): string {
  return url.replace(/\/+$/, "");
}

/**
 * The canonical base URL for the whole site. Prefers the CMS override
 * (SEO-Einstellungen → Website-URL) when it's a valid absolute URL, then
 * NEXT_PUBLIC_SERVER_URL (the single source of truth used everywhere else
 * in this app — emails, meeting links, Payload's own serverURL), then the
 * hardcoded siteConfig fallback. Never throws — SEO metadata must never
 * break a page render.
 */
export async function getSiteUrl(): Promise<string> {
  try {
    const settings = await getSEOSettingsGlobal();
    if (settings.siteUrl && /^https?:\/\/.+/.test(settings.siteUrl)) {
      return stripTrailingSlash(settings.siteUrl);
    }
  } catch {
    // CMS/DB unreachable — fall through to the env-based default.
  }
  return stripTrailingSlash(process.env.NEXT_PUBLIC_SERVER_URL || siteConfig.domain);
}

/** Whether the site should be indexable at all (global kill switch in the CMS). */
export async function isSiteIndexable(): Promise<boolean> {
  try {
    const settings = await getSEOSettingsGlobal();
    return settings.robotsIndexable !== false;
  } catch {
    return true;
  }
}