htaccess to hide subdirectory without changing base root, and with exception of another subdirectory - apache

Question

I have a website https://example.com
which has 2 subdirectories, https://example.com/admin and https://example.com/store.
I want to hide /store from URL so my requests would look like:
https://example.com/shop.php?id=someid
But Also, I want https://example.com/admin/index.php to work.
I found some answers that achieve both 1 and 2 but they change base root so all my css,js, images don't load
So far I have:
RewriteCond %{HTTP_HOST} ^(www\.)?example.com$
RewriteRule ^store/(.*) /$1 [L,R=301]
RewriteCond %{HTTP_HOST} ^(www\.)?example.com$
RewriteRule !^store/ store%{REQUEST_URI} [L]
This achieves 1 but not 2.

Answer 1

RewriteCond %{HTTP_HOST} ^(www\.)?example.com$
RewriteRule ^store/(.*) /$1 [L,R=301]
RewriteCond %{HTTP_HOST} ^(www\.)?example.com$
RewriteRule !^store/ store%{REQUEST_URI} [L]
In the second rule... exclude the /admin subdirectory (as well as /store) in the RewriteRule pattern. And add a condition to exclude requests that contain a file extension (ie. .css, .js, .png, etc.). For example:
RewriteCond %{HTTP_HOST} ^(www\.)?example.com$
RewriteCond %{REQUEST_URI} !\.\w{2,4}$
RewriteRule !^(store|admin)($|/) store%{REQUEST_URI} [L]
Alternatively (although marginally less efficient), exclude any request that already maps to a physical file:
RewriteCond %{HTTP_HOST} ^(www\.)?example.com$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule !^(store|admin)($|/) store%{REQUEST_URI} [L]
This rule assumes you have another .htaccess file in the /store subdirectory that also uses the rewrite engine. (But if that is the case then the first rule isn't actually doing anything.)
Unless you are hosting multiple domains/sites then you don't need the first condition that checks the requested Host.