public async Task RoamFile(IBindableStorageFile file)
{
using (await f_lock.Acquire())
{
if (!RoamedFiles.Contains(file))
{
//Backing values
string oldPath = GetParentFolder(file.BackingFile);
string value = await _ivService.GetValue(oldPath, FileLocation.Local);
await _ivService.Remove(oldPath, FileLocation.Local);
await file.BackingFile.MoveAsync(_roamingFolder, file.BackingFile.Name, NameCollisionOption.GenerateUniqueName);
await _ivService.Add(GetParentFolder(file.BackingFile), value, FileLocation.Roamed);
LocalFiles.Remove(file);
//UI
file.IsRoamed = true;
RoamedFiles.Add(file);
}
}
}
private async void OnRoamingDataChanged(ApplicationData sender, object args)
{
using (await f_lock.Acquire())
{
var roamingFiles = await Task.WhenAll((await sender.RoamingFolder.GetFilesAsync())
.Where(f => f.Name != Constants.IV_FILE_NAME)
.Select(async x => await BindableStorageFile.Create(x)));
var newDictionary = (await sender.RoamingFolder.GetFilesAsync()).First(f => f.Name == Constants.IV_FILE_NAME);
await newDictionary.CopyAsync(_roamingFolder, Constants.IV_FILE_NAME, NameCollisionOption.ReplaceExisting);
//Remove no-longer-synced-files
foreach (var file in RoamedFiles)
{
if (!await ContainsBindableStorageFile(file, roamingFiles))
{
await DeleteFileAsync(file.BackingFile, FileLocation.Roamed);
}
}
foreach (var file in roamingFiles.Where(f => f.Name != Constants.IV_FILE_NAME))
{
if (!(await ContainsBindableStorageFile(file, RoamedFiles)))
{
file.IsRoamed = true;
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal,
() => RoamedFiles.Add(file));
}
}
}
}