I can handle arbitrary file number and size and control it server side

Functionaly nothing change for the end user: the drop files and it's uploaded on the server.

Technically:

2 new REST routes:

• POST to create the file
  • the version is "un-published" until all chunks are uploaded
  • there cannot be 2 concurrent upload of version for the same file
• PATCH to send chunks
  • Last chunk is identified so the file can be marked as published
  • If patch > to a configured size a 400 error is thrown an uploaded chunks are discarded

In addition to that, in SYSTEM_CHECK (every 30 minutes) files partially uploaded not published are discareded (given a resonnable delay to avoid discarding a file being currently uploaded).