added auto library loading on first start.

Author: theweavrs

BreadPlayer.Core/ViewModels/LibraryViewModel.cs

@@ -37,6 +37,7 @@ You should have received a copy of the GNU General Public License
 using BreadPlayer.Common;
 using BreadPlayer.Messengers;
 using Windows.ApplicationModel.DataTransfer;
+using Windows.Storage.Search;
 
 namespace BreadPlayer.ViewModels
 {
@@ -424,7 +425,7 @@ async void Init(object para)
         #endregion
 
         #region Methods
-       
+     
         async Task RefreshSourceAsync()
         {
             await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
@@ -449,7 +450,7 @@ void ChangeView(string header, bool group, object src)
             grouped = group;
             source = src;
             libgrouped = ViewSource.IsSourceGrouped;
-            if((src as ThreadSafeObservableCollection<Mediafile>)?.Any() == true && Player.CurrentlyPlayingFile != null)
+            if((src as ThreadSafeObservableCollection<Mediafile>)?.Any() == true && Player.CurrentlyPlayingFile != null && (src as ThreadSafeObservableCollection<Mediafile>).FirstOrDefault(t => t.Path == Player.CurrentlyPlayingFile?.Path) != null)
                 (src as ThreadSafeObservableCollection<Mediafile>).FirstOrDefault(t => t.Path == Player.CurrentlyPlayingFile?.Path).State = PlayerState.Playing;
         }
         async Task LoadCollectionAsync(Func<Mediafile, string> sortFunc, bool group)

BreadPlayer.Core/ViewModels/SettingsViewModel.cs

@@ -105,11 +105,13 @@ public SettingsViewModel()
         }
         public static GroupedObservableCollection<string, Mediafile> TracksCollection
         { get; set; }
-        private void HandleMessage(Message message)
+        private async void HandleMessage(Message message)
         {
             if(message.Payload is List<object>)
             {
                 TracksCollection = (message.Payload as List<object>)[0] as GroupedObservableCollection<string, Mediafile>;
+                if (TracksCollection.Count <= 0)
+                    await AutoLoadMusicLibrary().ConfigureAwait(false);
                 if (TracksCollection != null)
                 {
                     message.HandledStatus = MessageHandledStatus.HandledContinue;
@@ -190,6 +192,15 @@ public ThreadSafeObservableCollection<StorageFolder> LibraryFoldersCollection
                 return _LibraryFoldersCollection; }
             set { Set(ref _LibraryFoldersCollection, value); }
         }
+        async Task AutoLoadMusicLibrary()
+        {
+            var options = Common.DirectoryWalker.GetQueryOptions();
+            //this is the query result which we recieve after querying in the folder
+            StorageFileQueryResult queryResult = KnownFolders.MusicLibrary.CreateFileQueryWithOptions(options);
+            //the event for files changed
+            queryResult.ContentsChanged += QueryResult_ContentsChanged;
+            await AddFolderToLibraryAsync(queryResult);
+        }
         /// <summary>
         /// Loads songs from a specified folder into the library. <seealso cref="LoadCommand"/>
         /// </summary>