/// <summary>
/// Deserializes all Files in .../podcasts/ path at startup
/// </summary>
/// <returns>A <see cref="List{PodcastModel}"/>Returns a List with all deserialized Podcasts if <see cref="true"/>, else a new empty List</returns>
public static ObservableCollection <PodcastModel> Deserialize()
{
var feedList = new ObservableCollection <PodcastModel>();
string podcastPath = MainViewModel.ApplicationSettings.GetPodcastPath();
string[] files = Directory.GetFiles(podcastPath, "*.json", SearchOption.TopDirectoryOnly);
Parallel.ForEach(files, file =>
{
if (!Guid.TryParse(Path.GetFileNameWithoutExtension(file), out Guid id))
{
return;
}
string json = File.ReadAllText(file);
PodcastModel feed = JsonConvert.DeserializeObject <PodcastModel>(json);
feedList.Add(feed);
});
if (files.Length <= 0)
{
return(new ObservableCollection <PodcastModel>());
}
return(feedList);
}
/// <summary>
/// Check if localpath and webpath ar valid and saves image
/// </summary>
/// <param name="podcastModel"></param>
private static async void SaveImage(this PodcastModel podcastModel)
{
string imagePath = MainViewModel.ApplicationSettings.GetImagePath() + podcastModel.Id + ".jpg";
bool isWebPath = Uri.TryCreate(podcastModel.ImagePath, UriKind.Absolute, out Uri webPath) && (webPath.Scheme == Uri.UriSchemeHttp || webPath.Scheme == Uri.UriSchemeHttps);
if (isWebPath)
{
podcastModel.SetImagePath(await FileController.DownloadImageAndSave(webPath.AbsoluteUri, imagePath));
}
}
/// <summary>
/// Serializes one <see cref="PodcastModel"/>. ID will be set if ID is equal to <see cref="Guid.Empty"/>
/// </summary>
/// <param name="podcastModel"></param>
public static void Serialize(this PodcastModel podcastModel)
{
if (podcastModel.Id == Guid.Empty.ToString())
{
podcastModel.SetID();
}
SaveImage(podcastModel);
string json = JsonConvert.SerializeObject(podcastModel, Formatting.Indented);
string path = MainViewModel.ApplicationSettings.GetPodcastPath() + podcastModel.Id + ".json";
File.WriteAllText(path, json);
}
