public bool IsFileCached(string key, string path = null)
{
string fileName = GetFileNameForKey(key);
string filePath = Path.Combine(path ?? string.Empty, fileName);
return(FileStorageHelper.IsFileExists(filePath));
}
/// <summary>
/// Load state
/// </summary>
public async Task LoadState()
{
try
{
if (!FileStorageHelper.IsFileExists("currentPlaylist.js"))
{
return;
}
var json = await FileStorageHelper.ReadText("currentPlaylist.js");
if (!string.IsNullOrEmpty(json))
{
_currentPlaylist.Deserialize(json);
if (_currentPlaylist.CurrentItem != null)
{
UpdateTransportControl();
CurrentAudioChanged?.Invoke(this, EventArgs.Empty);
}
}
}
catch (Exception ex)
{
Logger.Error(ex, "Unable to load AudioService state");
}
}
public async Task <Stream> GetCachedImageStream(string key)
{
if (!IsFileCached(key, ImageCachePath))
{
return(null);
}
try
{
var fileName = GetFileNameForKey(key);
var filePath = Path.Combine(ImageCachePath, fileName);
if (!FileStorageHelper.IsFileExists(filePath))
{
return(null);
}
var ms = new MemoryStream();
using (var fileStream = await FileStorageHelper.OpenFileRead(filePath))
{
await fileStream.CopyToAsync(ms);
}
await ms.FlushAsync();
ms.Seek(0, SeekOrigin.Begin);
return(ms);
}
catch (Exception ex)
{
Logger.Error(ex, "Unable to get cached image stream");
}
return(null);
}