Remove www site-wide, force https on certain directories and http on the rest?

Question

Firstly, I would like to remove the www. from my domain name

http://www.example.com => http://example.com

I would also like for certain directories to be sec

Answer 1

This code works for me:

   RewriteEngine on

   RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
   RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

   RewriteCond %{HTTPS} !=on
   RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]