/// <summary>
/// Retrieves the data from a RSS data source (http://www.dandandin.it/Blog/RSS.aspx?p=1~2~-1&r=f3a58073-d9c8-496e-af7b-f4ee2ae8dd40), in an observable collection of RssSearchResult items.
/// </summary>
/// <returns>An observable collection of RssSearchResult items.</returns>
public async Task <ObservableCollection <EntitiesBase.RssSearchResult> > Refresh()
{
SyndicationFeed feed;
if (_internetService.IsNetworkAvailable())
{
feed = await _xmlDataSource.LoadRemote <System.ServiceModel.Syndication.SyndicationFeed>(RssUrl);
var defaultImage = feed.ImageUrl != null ? feed.ImageUrl.AbsoluteUri : null;
var items = feed != null ? new ObservableCollection <EntitiesBase.RssSearchResult>(feed.Items.Select(i => new EntitiesBase.RssSearchResult(i, defaultImage))) : new ObservableCollection <EntitiesBase.RssSearchResult>();
_storageService.Save("Web_RSS", items);
return(items);
}
return(_storageService.Load <ObservableCollection <EntitiesBase.RssSearchResult> >("Web_RSS"));
}
/// <summary>
/// Retrieves the data from Youtube (channel: CNETTV ), filtered by a filter specification, in an observable collection of YouTubeVideo items.
/// </summary>
/// <param name="filter">Filter operation specification</param>
/// <returns>An observable collection of YouTubeVideo items.</returns>
public async Task <ObservableCollection <EntitiesBase.YouTubeVideo> > Search(FilterSpecification filter)
{
var data = _storageService.Load <EntitiesBase.YouTubeVideo[]>("Videos_s5");
var searchResults = RepositoriesBase.Filter <EntitiesBase.YouTubeVideo> .FilterCollection(filter, data);
if (searchResults == null || !searchResults.Any())
{
data = await _youtubeDataSource.LoadRemote <EntitiesBase.YouTubeVideo[]>(String.Format(YoutubeBaseUrl, HttpUtility.UrlEncode(YoutubeQuery)));
searchResults = RepositoriesBase.Filter <EntitiesBase.YouTubeVideo> .FilterCollection(filter, data);
}
return(searchResults);
}