update extension rename logic to prevent conflict

background.js

@@ -49,16 +49,18 @@ chrome.downloads.onDeterminingFilename.addListener(function(item, suggest) {
   //     skus = items.idArray.split(',');
   //   });
   // }
-  
-  var new_filename = skus[index] + ".zip"; 
-  suggest({filename: new_filename});
-  index++;
-  if(index >= skus.length) {
-    console.log("Last file was downloaded");
-    alert(noImages);
+  console.log(item.url);
+  if(item.url.includes("https://digitallibrary-external.fastretailing.com/api/asset")){
+    var new_filename = skus[index] + ".zip"; 
+    suggest({filename: new_filename});
+    index++;
+    if(index >= skus.length) {
+      console.log("Last file was downloaded");
+      alert(noImages);
 
-    index = 0;
-    noImages = "";
-    chrome.storage.local.remove('idArray');
+      index = 0;
+      noImages = "";
+      chrome.storage.local.remove('idArray');
+    }
   }
 });