Add warning message for dialog box

src/downloadmanager.cpp

@@ -444,20 +444,38 @@ void DownloadManager::queryDownloadListInfo()
 {
   TimeThis tt("DownloadManager::queryDownloadListInfos()");
 
-  startDisableDirWatcher();
-
   log::info("Retrieving infos from every download (if possible)...");
 
+  int incompleteInfos = 0;
+
   // Just go through all active downloads to query infos
   for (size_t i = 0; i < m_ActiveDownloads.size(); i++) {
     if (isInfoIncomplete(i)) {
-      queryInfoMd5(i);
+      incompleteInfos++;
     }
   }
 
-  log::info("Files infos have been retrived successfully!");
+  // Warn the user if the number of incomplete infos is over 5
+  if (incompleteInfos > 5) {
+    QString message = tr("There %1 incomplete download meta files.\n\n"
+                         "Do you want to fetch metadata for all incomplete downloads?\n"
+                         "API uses will be consumed, and Mod Organizer may stutter.");
+    message         = message.arg(incompleteInfos);
+    if (QMessageBox::question(m_ParentWidget, tr("Incomplete Download Infos"), message,
+                              QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes) {
+      // Fetch metadata for incomplete download infos
+      startDisableDirWatcher();
+      for (size_t i = 0; i < m_ActiveDownloads.size(); i++) {
+        if (isInfoIncomplete(i)) {
+          queryInfoMd5(i);
+        }
+      }
+      endDisableDirWatcher();
+    }
+    return;
+  }
 
-  endDisableDirWatcher();
+  log::info("Files infos have been retrieved successfully!");
 }
 
 bool DownloadManager::addDownload(const QStringList& URLs, QString gameName, int modID,