import "server-only";
import type { Metadata } from "next";
import { getSeoPage, getSeoSettings } from "@/lib/data";
import { siteConfig } from "@/lib/site-config";

export async function buildMetadata(path: string, fallback?: Metadata): Promise<Metadata> {
  const [settings, override] = await Promise.all([
    getSeoSettings(),
    getSeoPage(path),
  ]);

  const siteName = settings?.site_name || siteConfig.name;
  const siteDesc = settings?.site_description || siteConfig.tagline;
  const ogDefault = settings?.default_og_image || "/logo.png";

  const title =
    override?.title ?? (fallback?.title as string | undefined) ?? siteName;
  const description =
    override?.description ??
    (fallback?.description as string | undefined) ??
    siteDesc;
  const ogImage = override?.og_image || ogDefault;

  return {
    title,
    description,
    metadataBase: new URL(siteConfig.url),
    openGraph: {
      title,
      description,
      images: ogImage ? [{ url: ogImage }] : undefined,
      type: "website",
      locale: "tr_TR",
      siteName,
    },
    twitter: {
      card: "summary_large_image",
      title,
      description,
      images: ogImage ? [ogImage] : undefined,
      site: settings?.twitter_handle ?? undefined,
    },
    alternates: override?.canonical
      ? { canonical: override.canonical }
      : undefined,
    robots: override?.noindex
      ? { index: false, follow: false }
      : undefined,
    verification: settings?.google_site_verification
      ? { google: settings.google_site_verification }
      : undefined,
  };
}