301 Redirect to a 302 Redirect SEO implications

Question

using thousands of redirects i rebuilt my website and changed the url structure

I have a script (php) that digests unique# into year/month/newtitle via the middle-man url: example.com/redirector.php?unique#

Currently, the flow is:

example.com/unique# ----301----> example.com/redirector.php?unique# ----302----> example.com/year/month/title

should they both be 301 redirects  is there a way to redirect without using the middle man url