/**
 * The one place the site's absolute origin is written down.
 *
 * The apex domain 301s to www at Cloudflare, so www is the host that actually
 * serves a 200. Canonicals, og:url, sitemap <loc> entries and the robots.txt
 * Sitemap: line must all agree with it — a canonical pointing at a redirect
 * makes Google resolve the hop before it can consolidate the signal.
 *
 * backend/app.py holds the same value as BASE_URL for the sitemap. The two are
 * asserted against each other by the e2e journeys rather than shared at build
 * time, because the backend and frontend ship as separate images.
 */
export const SITE_URL = 'https://www.schoolcompare.co.uk';

/** Absolute URL for a site-relative path. Tolerates a missing leading slash. */
export function absoluteUrl(path: string): string {
  const rooted = path.startsWith('/') ? path : `/${path}`;
  return `${SITE_URL}${rooted}`;
}