/**
 * The `NEXT_PUBLIC_*` values this app needs, read once and validated here
 * rather than defaulted at each use site. Mirrors `lib/env.ts` in
 * nachklang-feedback, nachklang-admin and nachklang-tickets.
 *
 * Throwing is the whole point. Next inlines `process.env.NEXT_PUBLIC_*` at
 * **build** time, so a value missing when Plesk runs `npm run build` is baked
 * into the bundle and cannot be fixed by restarting the app. A fallback to
 * localhost would ship an admin area that sends every signed-out user to
 * `http://localhost:3002` - no error, no log, just a dead end. A failed build is
 * the better outcome, on the machine that can still do something about it.
 *
 * Referenced by their full literal name because that is what the inlining
 * matches - no dynamic lookup, no destructuring of `process.env`.
 */

function requireEnv(name: string, value: string | undefined): string {
  if (!value) {
    throw new Error(`${name} is not set. Copy .env.local.example and fill it in before building.`);
  }
  // URL.origin never carries a trailing slash, and neither should anything we concatenate onto.
  return value.replace(/\/+$/, "");
}

export const API_BASE_URL = requireEnv("NEXT_PUBLIC_API_BASE_URL", process.env.NEXT_PUBLIC_API_BASE_URL);

export const ADMIN_APP_URL = requireEnv("NEXT_PUBLIC_ADMIN_APP_URL", process.env.NEXT_PUBLIC_ADMIN_APP_URL);