if there is a native markdown driven, login supported, file-based(no database), online editor supported blog platform that transforms both code and markdown to

if there is a native markdown driven, login supported, file-based(no database), online editor supported blog platform that transforms both code and markdown to html5, I will start tech blogging right away. drupal and wordpress users for years and I keep looking for a simpler solution, no not the static site generators which has no online editor and no login support either. I plan build one with python/flask, then I will have my personal site.