public override Task Download()
{
return(Task.Run(async() =>
{
var patch = await FetchPatch();
var fileList = await FetchPatchManifest(patch.PatchId);
var rootUrl = string.Format(PatchRootFormat, patch.PatchId);
await _downloader.StartDownload(rootUrl, fileList.Files);
fileList.Files.GroupBy(f => f.HashGroup)
.ForEach(group =>
{
var hm = new HashManager(group.Key);
hm.CreateIfMissing();
hm.Load();
foreach (var file in group)
{
hm.Put(file.FullFile, file.Hash);
}
hm.Save();
});
}));
}