Display import state in a notification.

osu.Game/Database/ArchiveModelManager.cs

@@ -218,7 +218,42 @@ namespace osu.Game.Database
         /// <param name="stream">The stream to import files from.</param>
         /// <param name="filename">The filename of the archive being imported.</param>
         public async Task Import(Stream stream, string filename)
-            => await Import(new ZipArchiveReader(stream, filename)); // we need to keep around the filename as some model managers (namely SkinManager) use the archive name to populate skin info
+        {
+            var notification = new ProgressNotification
+            {
+                Progress = 0,
+                State = ProgressNotificationState.Active,
+                Text = $"{HumanisedModelName.Humanize(LetterCasing.Title)} import is initialising...",
+            };
+
+            PostNotification.Invoke(notification);
+
+            try
+            {
+                // we need to keep around the filename as some model managers (namely SkinManager) use the archive name to populate skin info
+                var imported = await Import(new ZipArchiveReader(stream, filename), notification.CancellationToken);
+
+                notification.CompletionText = $"Imported {imported}! Click to view.";
+                notification.CompletionClickAction += () =>
+                {
+                    PresentImport?.Invoke(new[] { imported });
+                    return true;
+                };
+                notification.State = ProgressNotificationState.Completed;
+            }
+            catch (TaskCanceledException)
+            {
+                throw;
+            }
+            catch (Exception e)
+            {
+                notification.Text = $"{HumanisedModelName.Humanize(LetterCasing.Title)} import failed!";
+                notification.State = ProgressNotificationState.Cancelled;
+                Logger.Error(e, $@"Could not import ({filename})", LoggingTarget.Database);
+            }
+
+            return;
+        }
 
         /// <summary>
         /// Fired when the user requests to view the resulting import.