apps/backend/off-service.js

@@ -3,8 +3,10 @@ import redisClient from './redis-client.js';
 
 const OFF_API_BASE = 'https://world.openfoodfacts.org';
 const CACHE_TTL = 3600;
+const MAX_RETRIES = 2;
+const RETRY_DELAY_MS = 1000;
 
-// Open Food Facts authentication (optional, improves rate limits)
+// Open Food Facts authentication (required for reliable access)
 const OFF_USERNAME = process.env.OFF_USERNAME;
 const OFF_PASSWORD = process.env.OFF_PASSWORD;
 
@@ -18,6 +20,10 @@ function getOffAuth() {
   return null;
 }
 
+function sleep(ms) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
 export function transformOFFProduct(offProduct) {
   if (!offProduct || !offProduct._id || !offProduct.product_name) {
     return null;
@@ -68,6 +74,10 @@ export async function searchBabyProducts(query) {
 
     console.log(`Fetching from OFF API: ${searchTerm}`);
     const auth = getOffAuth();
+
+    let lastError;
+    for (let attempt = 0; attempt <= MAX_RETRIES; attempt++) {
+      try {
         const response = await axios.get(`${OFF_API_BASE}/cgi/search.pl`, {
           params: {
             search_terms: searchTerm,
@@ -83,7 +93,11 @@ export async function searchBabyProducts(query) {
 
         // Check if response is actually JSON (OFF sometimes returns HTML on error)
         if (typeof response.data === 'string' || !response.data.products) {
-      console.warn(`[OFF] Invalid response for "${searchTerm}": API may be down`);
+          console.warn(`[OFF] Invalid response for "${searchTerm}" (attempt ${attempt + 1}): API may be down`);
+          if (attempt < MAX_RETRIES) {
+            await sleep(RETRY_DELAY_MS * (attempt + 1));
+            continue;
+          }
           return [];
         }
 
@@ -103,6 +117,17 @@ export async function searchBabyProducts(query) {
           console.log(`[OFF] No products found for "${searchTerm}", not caching empty result`);
         }
         return products;
+      } catch (err) {
+        lastError = err;
+        console.warn(`[OFF] Request failed for "${searchTerm}" (attempt ${attempt + 1}): ${err.message}`);
+        if (attempt < MAX_RETRIES) {
+          await sleep(RETRY_DELAY_MS * (attempt + 1));
+        }
+      }
+    }
+
+    console.error(`[OFF] All retries failed for "${searchTerm}": ${lastError?.message}`);
+    return [];
   } catch (error) {
     console.error('Error searching baby products from OFF:', error.message);
     return [];