public async Task <FileItem?> GetChangedFileAsync(CancellationToken cancellationToken, Action startedWatching)
{
foreach (var file in _fileSet)
{
_fileWatcher.WatchDirectory(Path.GetDirectoryName(file.FilePath));
}
var tcs = new TaskCompletionSource <FileItem?>(TaskCreationOptions.RunContinuationsAsynchronously);
cancellationToken.Register(() => tcs.TrySetResult(null));
void FileChangedCallback(string path, bool newFile)
{
if (_fileSet.TryGetValue(path, out var fileItem))
{
tcs.TrySetResult(fileItem);
}
}
_fileWatcher.OnFileChange += FileChangedCallback;
startedWatching();
var changedFile = await tcs.Task;
_fileWatcher.OnFileChange -= FileChangedCallback;
return(changedFile);
}
