Site URL

1/**
2 * Canonical public site URL for metadata, sitemap, and JSON-LD.
3 */
4 
5import { getBrand } from "@/lib/brand";
6 
7export function getSiteUrl(): string {
8  const brand = getBrand();
9 
10  // Prefer explicit public URL, then brand default. Only use Vercel deployment
11  // host on preview builds so production JSON-LD / OG never point at *.vercel.app.
12  const raw =
13    process.env.NEXT_PUBLIC_SITE_URL ||
14    (process.env.VERCEL_ENV === "preview" && process.env.VERCEL_URL
15      ? `https://${process.env.VERCEL_URL}`
16      : brand.siteUrl);
17 
18  // Prefer www for apex hosts when crawlers are picky about og:image redirects.
19  try {
20    const url = new URL(raw);
21    const apex = brand.domain.replace(/^www\./, "");
22    if (url.hostname === apex) {
23      url.hostname = `www.${apex}`;
24      return url.toString().replace(/\/$/, "");
25    }
26  } catch {
27    // fall through
28  }
29  return raw.replace(/\/$/, "");
30}