private int AddSong(int songId)
{
// Keep queue trimmed
if (LookupMap.Count >= MAX_QUEUE_SIZE)
{
PlayQueueEntryModel head = null;
if (PlaybackQueue.Count > 0)
{
head = PlaybackQueue.First();
}
if (head != null)
{
if (CurrentPlaybackQueueEntryId == head.RowId)
{
// TODO: #6 raise alert about queue being full
return -1;
}
else
{
RemoveEntry(head.RowId);
}
}
}
PlayQueueEntryModel currentTail = null;
if (PlaybackQueue.Count > 0)
{
currentTail = PlaybackQueue.Last();
}
PlayQueueEntryTable newPlayQueueEntry;
if (currentTail == null)
{
newPlayQueueEntry = new PlayQueueEntryTable(songId, 0, 0);
DatabaseManager.Current.AddPlayQueueEntry(newPlayQueueEntry);
}
else
{
newPlayQueueEntry = new PlayQueueEntryTable(songId, 0, currentTail.RowId);
DatabaseManager.Current.AddPlayQueueEntry(newPlayQueueEntry);
currentTail.NextId = newPlayQueueEntry.RowId;
}
PlayQueueEntryModel newEntry = new PlayQueueEntryModel(newPlayQueueEntry);
LookupMap.Add(newEntry.RowId, newEntry);
PlaybackQueue.Add(newEntry);
NotifyPropertyChanged(Properties.NextTrack);
NotifyPropertyChanged(Properties.PrevTrack);
return newEntry.RowId;
}
public void Populate()
{
Logger.Current.Log(new CallerInfo(), LogLevel.Info, "Calling Popuplate");
List<PlayQueueEntryTable> allEntries = DatabaseManager.Current.FetchPlayQueueEntries();
PlayQueueEntryModel head = null;
foreach (PlayQueueEntryTable playQueueEntry in allEntries)
{
PlayQueueEntryModel newEntry = new PlayQueueEntryModel(playQueueEntry);
LookupMap.Add(newEntry.RowId, newEntry);
if (newEntry.PrevId == 0)
{
DebugHelper.Assert(new CallerInfo(), head == null, "Second head found in play queue!!!");
head = newEntry;
}
}
PlayQueueEntryModel currentLocation = head;
while (currentLocation != null && PlaybackQueue.Count < LookupMap.Count)
{
PlaybackQueue.Add(currentLocation);
if (LookupMap.ContainsKey(currentLocation.NextId))
{
currentLocation = LookupMap[currentLocation.NextId];
}
else
{
currentLocation = null;
}
}
DebugHelper.Assert(new CallerInfo(), currentLocation == null, "Circular reference found in Play Queue");
DebugHelper.Assert(new CallerInfo(), PlaybackQueue.Count == LookupMap.Count, "Missing element found in Play Queue");
CurrentPlaybackQueueEntryId = ApplicationSettings.GetSettingsValue<int>(ApplicationSettings.CURRENT_PLAYQUEUE_POSITION, 0);
if (CurrentPlaybackQueueEntryId == 0)
{
ResetPlayerToStart();
}
}