domainstack.io/lib/edge-config.ts

"use cache";

import { get } from "@vercel/edge-config";

/**
 * Fetches the default domain suggestions from Vercel Edge Config.
 *
 * Falls back to an empty array if Edge Config is not configured or the key doesn't exist,
 * which shows only user search history without default suggestions.
 *
 * Edge Config key: `domain_suggestions`
 *
 * Expected schema:
 * ```json
 * {
 *   "domain_suggestions": [
 *     "github.com",
 *     "reddit.com",
 *     "wikipedia.org",
 *     "firefox.com",
 *     "jarv.is"
 *   ]
 * }
 * ```
 *
 * @returns Array of suggested domain names (empty array if unavailable)
 */
export async function getDefaultSuggestions(): Promise<string[]> {
  // If EDGE_CONFIG is not set, return empty array
  if (!process.env.EDGE_CONFIG) {
    return [];
  }

  try {
    const suggestions = await get<string[]>("domain_suggestions");

    // Return the suggestions if they exist, otherwise empty array
    return suggestions ?? [];
  } catch (error) {
    // Log the error but fail gracefully
    console.error(
      "[edge-config] failed to fetch domain suggestions",
      error instanceof Error ? error.message : String(error),
    );
    return [];
  }
}