added alertView

YouTube/Helpers/GlobalVariables.swift

@@ -67,3 +67,14 @@ func requestSuggestionsURL(text: String) -> URL {
     let url = URL.init(string: "https://api.bing.com/osjson.aspx?query=\(netText)")!
     return url
 }
+
+func showNotification() {
+    let alert = UIAlertController(title: "Oops!", message:"Please check your internet connection", preferredStyle: .alert)
+    alert.addAction(UIAlertAction(title: "OK", style: .default) { _ in })
+    let navigationController = UIApplication.shared().windows[0].rootViewController as! UINavigationController
+    let activeViewCont = navigationController.visibleViewController!
+    activeViewCont.present(alert, animated: true, completion: nil)
+}
+
+
+

YouTube/Model/User.swift

@@ -41,10 +41,10 @@ class User {
                     let user = User.init(name: name, profilePic: profilePic, backgroundImage: backgroundImage, playlists: playlists)
                     completition(user)
                 } catch _ {
-                    print("failed to fetch data")
+                    showNotification()
                 }
             } else {
-                print("Please check your internet connection")
+                showNotification()
             }
         }.resume()
     }

YouTube/Model/Video.swift

@@ -69,7 +69,7 @@ class Video {
                                                 suggestedVideos: suggestedVideos)
                     completiotion(video)
                 } catch _ {
-                    print("error downloading video")
+                  showNotification()
                 }
             }
         }.resume()

YouTube/Model/VideoItem.swift

@@ -25,13 +25,13 @@ class VideoItem {
         var items = [[String : AnyObject]]()
         URLSession.shared().dataTask(with: fromURL) { (data, response, error) in
             if error != nil {
-            print("Please check your internet connection")
+            showNotification()
             } else{
                     do{
                         let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers)
                         items = json as! [[String : AnyObject]]
                         } catch _ {
-                    print("error fetching the feed")
+                    showNotification()
                     }
                 completition(items)
         }