public NewsFeedViewModel(List<NewsFeedItem> newsItems, UserCache userCache)
{
NewsItems = newsItems;
_cache = userCache;
if (NewsItems.Any())
_cache.LogViewedNewsItem(NewsItems[_index].Album.ID);
}
public static UserCache Load(string userName)
{
UserCache newCache = new UserCache(userName);
if (File.Exists(newCache._cacheLocation))
{
using (StreamReader reader = new StreamReader(newCache._cacheLocation))
{
newCache._cacheData = JsonConvert.DeserializeObject<UserCacheData>(reader.ReadToEnd());
}
}
if (newCache._cacheData == null)
{
newCache._cacheData = new UserCacheData();
}
return newCache;
}
/// <summary>
/// Spawn a background task to find any new albums or tracks
/// based on what the user is following. A news feed item will
/// popup if an item is found.
/// </summary>
/// <param name="userCache"></param>
private void GetNewsFeed(UserCache userCache)
{
/*System.Threading.Tasks.Task.Run(() =>
{
AlbumType filter = AlbumType.Album | AlbumType.Single;
DateTime cutoff = DateTime.Now.AddMonths(-3); //TODO: Data-drive this setting.
int maxSuggestions = 1; //TODO: Data-drive this setting.
FollowedArtistList followedArtists = SpotifyCacheService.GetFollowedArtists();
List<NewsFeedItem> newsItems = new List<NewsFeedItem>();
foreach (Artist followedArtist in followedArtists.ArtistItems.Items)
{
//Find if there's any new content available from this artist.
AlbumInfoList albums = SpotifyClientService.Client.GetArtistAlbums(followedArtist, filter);
foreach (AlbumInfo album in albums.Items)
{
if (userCache.SeenNewsItem(album.ID)) continue;
Album albumInfo = SpotifyClientService.Client.GetAlbum(album);
if (albumInfo.ReleaseDate > cutoff)
{
newsItems.Add(new NewsFeedItem(followedArtist, albumInfo));
if (newsItems.Count >= maxSuggestions)
break;
}
else
{
//Assume that albums are returned by Spotify by release date, descending.
//If we miss the cutoff, skip out.
break;
}
}
if (newsItems.Count >= maxSuggestions)
break;
}
if (newsItems.Any())
{
Dispatcher.Invoke(() =>
{
//Display a popup.
this.NewsFeedPopup.DataContext = new NewsFeedViewModel(newsItems, userCache);
this.NewsFeedPopup.Width = this.RenderSize.Width * 0.8;
this.NewsFeedPopup.Height = this.RenderSize.Height * 0.8;
this.NewsFeedPopup.IsOpen = true;
});
}
});*/
}
/// <summary>
/// Displays the login window and will initialize the application with
/// login credentials.
/// </summary>
private void Login() {
if (ShowLoginWindow() == false)
return;
this.PlaylistView.Initialize();
this.NavigationControl.Initialize();
PlaylistService.Initialize(this.PlaylistView.ViewModel);
_userCache = UserCache.Load(SpotifyClientService.User.Id);
GetNewsFeed(_userCache);
//TODO: Support other music services. This should be broken out into a separate UI action.
LoginViewModel loginViewModel = (LoginViewModel)this.LoginControl.DataContext;
loginViewModel.AccountName = SpotifyClientService.User.DisplayName;
loginViewModel.MusicService = MusicService.Spotify;
MainWindowViewModel mainWindowViewModel = (MainWindowViewModel)this.DataContext;
mainWindowViewModel.IsLoggedIn = true;
}
public NewsFeedViewModel()
{
NewsItems = new List<NewsFeedItem>();
_cache = null;
}