protected override async Task OnLoadMoreData(int offset)
{
if (_actionResult != null &&
offset >= _actionResult.TotalMatches)
{
return;
}
var apiDevice = SonosMusicApi.GetMusicApiDevice(_currentMusicServiceContainer);
var memStorage = GetMemoryStorage(apiDevice.FriendlyName);
ActionResult actionResult;
using (Loader.Loading("Loading 64 items"))
{
if (_currentMusicServiceContainer == null)
{
return;
}
actionResult = await apiDevice
.MusicApiService
.GetMetadata(_currentMusicServiceContainer.Token, offset, 64);
}
_actionResult = actionResult;
if (actionResult.Exception != null)
{
return;
}
if (offset >= actionResult.TotalMatches)
{
return;
}
var loadedData = memStorage.Load <XElement>(_currentMusicServiceContainer.Token);
if (loadedData != null)
{
loadedData.Add(actionResult.Result.Elements());
memStorage.Save(_currentMusicServiceContainer.Token, loadedData);
}
var query = Query(actionResult.Result);
foreach (var item in query)
{
Items.Add(item);
}
}
public override async Task <XElement> GetData(Container container, uint offset = 0)
{
if (_currentMusicServiceContainer == null)
{
throw new Exception("musicService MUST be typeof MusicServiceContainer");
}
var apiDevice = SonosMusicApi.GetMusicApiDevice(_currentMusicServiceContainer);
var loadedData = GetMemoryStorage(apiDevice.FriendlyName)
.Load <XElement>(_currentMusicServiceContainer.Token);
if (loadedData != null)
{
return(loadedData);
}
// we need to check credentials and ask user to enable service if we dont have the
// service credentials
var credentialsOk = await apiDevice
.MusicApiService.CheckCredentials()
.ConfigureAwait(false);
if (!credentialsOk)
{
if (!await TryGetCredentialsFromUser(apiDevice, _currentMusicServiceContainer.Auth)
.ConfigureAwait(false))
{
Items = new ObservableCollection <MusicServiceContainer>
{
ContainerFactory.Create(container.Id, container.ParentId,
"No credentials for " + _currentMusicServiceContainer.Title,
container.ClassId) as MusicServiceContainer
};
return(null);
}
}
ActionResult actionResult;
using (Loader.Loading("Loading..."))
{
actionResult = await apiDevice
.MusicApiService
.GetMetadata(_currentMusicServiceContainer.Token, 0, 64)
.ConfigureAwait(false);
}
Debug.WriteLine(actionResult.Result);
_actionResult = actionResult;
// disable cache for services.
if (actionResult.Exception != null)
{
Items = new ObservableCollection <MusicServiceContainer>
{
ContainerFactory.Create <MusicServiceContainer>(container.Id, container.ParentId,
"Error getting items...", container.ClassId)
};
}
GetMemoryStorage(apiDevice.FriendlyName)
.Save(_currentMusicServiceContainer.Token, actionResult.Result);
return(actionResult.Result);
}