public bool NeedsDownload(string videoId, StorageFile storageFile)
{
if (UrlCaches.ContainsKey(videoId) && storageFile.Exists())
{
var fileName = storageFile.ToString();
var urlCache = UrlCaches[videoId];
if (storageFile.Length >= urlCache.Length)
{
if (!VideoCaches.ContainsKey(fileName))
{
SetFinished(urlCache.VideoId, fileName, false);
}
else if (VideoCaches[fileName].Finished)
{
return(false);
}
}
foreach (var item in VideoCaches.Where(p => p.Value.FileName != fileName && p.Value.Finished && File.Exists(p.Value.FileName) && p.Value.VideoId == videoId))
{
try {
File.Copy(item.Value.FileName, fileName, true);
} catch (IOException) {
return(true);
}
SetFinished(urlCache.VideoId, fileName, true);
return(false);
}
}
return(true);
}
public void SetFinished(string videoId, string fileName, bool finished)
{
if (VideoCaches.ContainsKey(fileName))
{
var item = VideoCaches[fileName];
if (item.VideoId == videoId)
{
item.Finished = finished;
}
}
else
{
var videoCache = new VideoCache {
VideoId = videoId, FileName = fileName, Finished = finished
};
_videoCaches.Add(videoCache);
VideoCaches.Add(fileName, videoCache);
}
}
