How to change all routes with language codes
I need to dublicate all existing routes with several language codes:
/2020/03/11/Hello-world
/en/2020/03/11/Hello-world
/de/2020/03/11/Hello-world
/Hello-world-page
/en/Hello-world-page
/de/Hello-world-page
/...
/en/...
/de/...
Then I need to pre-handle all routes to check prefix exists and get as slug, then let related handlers do thier jobs.. I searched it many many times but never lucky to solve..
How to accomplish that? Thank you!