/**
 * Shared environment helpers.
 */
import { readRuntimeConfigIsland } from "@/lib/runtime-config.shared";
import { readBoolEnv, readOptOutEnv } from "@/lib/runtime-env";

/**
 * Whether the UI is running inside a Prowler Cloud deployment.
 *
 * Runtime read, resolved from two sources:
 * - Browser: the runtime public-config island (`cloudEnabled`), rendered in
 *   <head> before any bundle runs, so calling this at module scope is safe.
 * - Without a DOM (RSC, server actions, SSR, edge, Node) and jsdom tests
 *   without an island: `UI_CLOUD_ENABLED`. The island is produced from the
 *   same env var (lib/runtime-config.ts), so SSR and hydration always agree.
 */
export function isCloud(): boolean {
  const islandConfig = readRuntimeConfigIsland();
  if (islandConfig) return islandConfig.cloudEnabled;

  return readBoolEnv("UI_CLOUD_ENABLED");
}

/**
 * Whether visitors can create an account without an invitation.
 *
 * Prowler Cloud only: always on elsewhere. In Cloud it follows
 * `UI_SELF_REGISTRATION_ENABLED` (island, then env), on unless "false".
 */
export function isSelfRegistrationEnabled(): boolean {
  if (!isCloud()) return true;

  const islandConfig = readRuntimeConfigIsland();
  if (islandConfig) return islandConfig.selfRegistrationEnabled;

  return readOptOutEnv("UI_SELF_REGISTRATION_ENABLED");
}