htaccess

So I am stuck

I have a redirect for port 80 traffic to redirect to https version of the site. so all the site is on https

RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteRule ^{^(.*)$} https://www.domain.com/$1 [R=301,L]

All pages redirect to correct version on https.

NOW I want to change domain to dom-ain.com but I am stuck on how to redirect to this new https domain possibly non https at first.

I have back links on the web to the non https version and https version of domain.com

What should the htaccess code be if I want the site to redirect to the new domain now and I plan to keep it an exact replica in structure and content.

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