const PUBLIC_SITE_SETTINGS_CACHE_TTL_MS = 30_000;
const PUBLIC_SITE_SETTINGS_CACHE_KEY = Symbol.for(
  "ai-chatbot.public-site-settings-cache",
);

type PublicSiteSettingsCacheEntry = {
  data: Record<string, unknown>;
  expiresAt: number;
};

function getPublicSiteSettingsCacheStore() {
  const globalCache = globalThis as typeof globalThis & {
    [PUBLIC_SITE_SETTINGS_CACHE_KEY]?: Map<
      string,
      PublicSiteSettingsCacheEntry
    >;
  };

  if (!globalCache[PUBLIC_SITE_SETTINGS_CACHE_KEY]) {
    globalCache[PUBLIC_SITE_SETTINGS_CACHE_KEY] = new Map<
      string,
      PublicSiteSettingsCacheEntry
    >();
  }

  return globalCache[PUBLIC_SITE_SETTINGS_CACHE_KEY]!;
}

export function getScopedSiteSettingsCache(cacheKey: string) {
  return getPublicSiteSettingsCacheStore().get(cacheKey) ?? null;
}

export function setScopedSiteSettingsCache(
  cacheKey: string,
  data: Record<string, unknown>,
  ttlMs: number = PUBLIC_SITE_SETTINGS_CACHE_TTL_MS,
) {
  getPublicSiteSettingsCacheStore().set(cacheKey, {
    data,
    expiresAt: Date.now() + ttlMs,
  });
}

export function deleteScopedSiteSettingsCache(cacheKey: string) {
  getPublicSiteSettingsCacheStore().delete(cacheKey);
}

export function clearScopedSiteSettingsCache() {
  getPublicSiteSettingsCacheStore().clear();
}

export { PUBLIC_SITE_SETTINGS_CACHE_TTL_MS };