export const SITE_ORIGIN = "https://www.asphp.ir";
export const SITE_NAME = "آریا شبکه پیشرو";
export const DEFAULT_DESCRIPTION =
  "خرید سرور HP، رم سرور، هارد سرور، CPU و تجهیزات شبکه از آریا شبکه پیشرو همراه با مشاوره تخصصی، تضمین کیفیت و خدمات پس از فروش.";

export function pageMetadata({ title, description = DEFAULT_DESCRIPTION, path = "/", image }) {
  const canonical = absoluteUrl(path);
  const metaTitle = title.includes(SITE_NAME) ? title : `${title} | ${SITE_NAME}`;

  return {
    title: metaTitle,
    description,
    alternates: {
      canonical
    },
    openGraph: {
      title: metaTitle,
      description,
      url: canonical,
      siteName: SITE_NAME,
      locale: "fa_IR",
      type: "website",
      ...(image ? { images: [{ url: absoluteUrl(image), alt: title }] } : {})
    },
    twitter: {
      card: image ? "summary_large_image" : "summary",
      title: metaTitle,
      description,
      ...(image ? { images: [absoluteUrl(image)] } : {})
    }
  };
}

export function productCanonicalPath(item) {
  const id = item.productId || item.id;
  return `/products/${encodeURIComponent(id)}/${slugifyFa(item.title)}`;
}

export function blogCanonicalPath(blog) {
  return `/blog/${encodeURIComponent(blog.id)}/${slugifyFa(blog.title)}`;
}

export function absoluteUrl(path = "/") {
  if (/^https?:\/\//.test(path)) return path;
  return `${SITE_ORIGIN}${path.startsWith("/") ? path : `/${path}`}`;
}

export function slugifyFa(value = "") {
  return String(value)
    .trim()
    .normalize("NFKC")
    .replace(/[^\p{L}\p{N}\s-]+/gu, "")
    .replace(/\s+/g, "-")
    .replace(/-+/g, "-")
    .replace(/^-|-$/g, "");
}