/// <summary>
/// Add a new media data to the registry from an actual media file.
/// </summary>
/// <param name="file">THe supplied media file. Make sure it is in a supported format.</param>
public static async void AddMedia(StorageFile file)
{
try
{
MediaType mediaType = GetMediaType(file.FileType); // Figure out the type of file and add the right media data.
switch (mediaType)
{
case MediaType.Audio:
AddMedia(await NBAudio.FromStorageFileAsync(file).ConfigureAwait(true));
break;
case MediaType.Video:
AddMedia(await NBVideo.FromStorageFileAsync(file).ConfigureAwait(true));
break;
case MediaType.Image:
AddMedia(await NBImage.FromStorageFileAsync(file).ConfigureAwait(true));
break;
default:
throw new ArgumentException("This file is either unsupported or invalid."); // In case all else fails, throw an error.
}
}
catch (Exception e)
{
await new MessageDialog("Something went wrong, so we could not add this media at all: " + e.Message).ShowAsync(); // If something goes wrong, notify the users.
}
}
/// <summary>
/// From the storage folder, import the saved media from .nbme files. Ignores all invalid and corrupted files.
/// For the format of each .nbme file, see: <see cref="SaveNewMedia(NBMedia)"/>
/// </summary>
public static async void LoadMedias()
{
StorageFolder dataStorage = ApplicationData.Current.LocalFolder;
StorageFolder mediasStorageFolder;
try
{
mediasStorageFolder = await dataStorage.GetFolderAsync(MEDIA_STORAGE_NAME);
}
catch (FileNotFoundException)
{
mediasStorageFolder = await dataStorage.CreateFolderAsync(MEDIA_STORAGE_NAME);
}
IReadOnlyList <StorageFile> foundFiles = await mediasStorageFolder.GetFilesAsync(); // Get the files.
int problemFilesCount = 0; // Stores the number of corrupted files to display later.
foreach (StorageFile file in foundFiles)
{
if (file.FileType == MEDIA_STORAGE_FORMAT) // Invalid files are ignored and do not count towards the problem files count.
{
try // Read the lines of the file.
{
IList <string> contentLines = await FileIO.ReadLinesAsync(file);
string targetFormat = contentLines[0];
string targetPath = contentLines[1];
StorageFile mediaFile = await StorageFile.GetFileFromPathAsync(targetPath); // This errors if the path is invalid. Suitable for a validity check.
MediaType mediaType = GetMediaType(targetFormat); // Get the type of media and import it.
NBMedia resultantMedia;
switch (mediaType)
{
case MediaType.Audio:
resultantMedia = await NBAudio.FromStorageFileAsync(mediaFile).ConfigureAwait(true);
break;
case MediaType.Video:
resultantMedia = await NBVideo.FromStorageFileAsync(mediaFile).ConfigureAwait(true);
break;
case MediaType.Image:
resultantMedia = await NBImage.FromStorageFileAsync(mediaFile).ConfigureAwait(true);
break;
default:
throw new ArgumentException("This file is either unsupported or invalid."); // In case all else fails, throws the error to make it count towards the problem files.
}
resultantMedia.DataFile = file;
medias.Add(resultantMedia);
}
catch (Exception)
{
problemFilesCount++;
// new MessageDialog("Something went wrong while opening a media data file.").ShowAsync();
}
}
}
if (problemFilesCount > 0) // If there are any corrupted files, notify users about that.
{
string fileWordForm = (problemFilesCount > 1) ? "files" : "file"; // I like grammar and spelling. 1 problem file will return "file" and multiple problem files will return "files".
await new MessageDialog($"Something went wrong while opening {problemFilesCount} media data {fileWordForm}. All problematic files are ignored due to possible corruption or denied access.\n\nPlease make sure to turn on File System Access for the Nebula Player app in\nSettings > Privacy > File System.\n\nIf it is allowed, please clear the list by clicking on the Clear List button and reimport all media.").ShowAsync();
}
}
