Fix: add timeout to IDCTA fetch

Author: SantaZena

src/app/lib/idcta/fetchIdctaConfig/index.ts

@@ -22,13 +22,19 @@ const cache = new LRUCache<string, IdctaConfig>({
 async function fetchIdctaConfig(): Promise<IdctaConfig | null> {
   const idctaConfigUrl = getIdctaConfigUrl();
 
+  if (!idctaConfigUrl) return null;
+
   const cachedConfig = cache.get(idctaConfigUrl);
   if (cachedConfig) {
     return cachedConfig;
   }
 
+  const controller = new AbortController();
+  const timeoutMs = 2000;
+  const timeoutId = setTimeout(() => controller.abort(), timeoutMs);
+
   try {
-    const response = await fetch(idctaConfigUrl);
+    const response = await fetch(idctaConfigUrl, { signal: controller.signal });
 
     if (!response.ok) {
       throw new Error(`HTTP ${response.status}: ${response.statusText}`);
@@ -37,14 +43,15 @@ async function fetchIdctaConfig(): Promise<IdctaConfig | null> {
     const config = await response.json();
 
     cache.set(idctaConfigUrl, config);
-
     return config;
   } catch (error) {
     logger.error(IDCTA_FETCH_ERROR, {
       url: idctaConfigUrl,
       error,
     });
     return null;
+  } finally {
+    clearTimeout(timeoutId);
   }
 }