public async Task<XCollection<Bookmark>> RemoveBookmarks( XCollection<Bookmark> bookmarks, CancellationToken cancellationToken )
{
if( bookmarks != null && bookmarks.Count > 0 )
{
string id = bookmarks[0].ArtId;
XCollection<Bookmark> existbookmarks = await GetBookmarksByDocumentId( id, cancellationToken ) ?? (await GetLocalBookmarksByDocumentId(id, cancellationToken ) ?? new XCollection<Bookmark>());
if( existbookmarks.Count > 0 )
{
for( int i = existbookmarks.Count - 1; i >= 0; i-- )
{
if( bookmarks.Any( x => x.Id == existbookmarks[i].Id ) )
{
existbookmarks.RemoveAt( i );
}
}
}
BookmarksResponse request = new BookmarksResponse();
request.Bookmarks = existbookmarks;
await SaveBookmarks( id, request, cancellationToken );
return request.Bookmarks;
}
return null;
}