public async Task DeleteMediaFiles(List <KeyValuePair <string, long> > mediaFiles)
{
var folders = await MapDeckIdToDeckIdFolder();
foreach (var file in mediaFiles)
{
StorageFolder folder;
if (folders.Keys.Contains(file.Value))
{
folder = folders[file.Value];
}
else
{
folder = await MediaFolder.TryGetItemAsync(file.Value.ToString()) as StorageFolder;
}
if (folder == null)
{
continue;
}
var storageFile = await folder.TryGetItemAsync(file.Key) as StorageFile;
if (storageFile != null)
{
await storageFile.DeleteAsync();
MarkFileRemoveIntoDatabase(storageFile.Name, file.Value);
}
}
}
public async Task <StorageFolder> GetDeckMediaFolder(long deckId)
{
var folder = await MediaFolder.TryGetItemAsync(deckId.ToString()) as StorageFolder;
if (folder == null)
{
folder = await MediaFolder.CreateFolderAsync(deckId.ToString());
}
return(folder);
}
public async Task <Dictionary <long, StorageFolder> > MapDeckIdToDeckIdFolder()
{
long[] deckIdArray = collection.Deck.AllIds();
Dictionary <long, StorageFolder> folderList = new Dictionary <long, StorageFolder>();
foreach (var id in deckIdArray)
{
StorageFolder folder = await MediaFolder.TryGetItemAsync(id.ToString()) as StorageFolder;
if (folder == null)
{
folder = await MediaFolder.CreateFolderAsync(id.ToString());
}
folderList.Add(id, folder);
}
return(folderList);
}
