mod rewrite - RewriteRule in .htaccess and Reverse Proxy -

here problem, i`m struggling few days.

we`ve got domain firstpart.maindomanin.com nad subdomain secondpart.maindomain.com. under first domain there first part of project (based on saas commerce) , second part (under secondpart.maindomain.com) - based on symfony. 2 parts connected through soap services etc.

for firstpart.maindoman.com using cloudflare. we`ve got reverse proxy so: firstpart.maindomain.com/uk/made pointed secondpart.maindomain.com/uk

and (we cant enable cloudflare secondpart.maindomain.com due unrelated issues) want redirect url-s secondpart.maindomain.com/uk firstpart.maindomain.com/uk/made example secondpart.maindomain.com/uk/furniture firstpart.maindomain.com/uk/made/furniture secondpart.maindomain.com/uk/sales firstpart.maindomain.com/uk/made/sales etc. need change domain , add 'made' between language code , rest of url

other need redirect urls firstpart.maindomain.com/uk/furniture firstpart.maindomain.com/uk/made/furniture (add 'made' between language code , rest of url)

and need in htaccess under subdomain secondpart.maindomain.com.

i came with:

rewritecond %{http_host} secondpart.maindomain.com$ [nc] rewriterule ^([a-z]{2,3})(.*)$ http://firstpart.maindomain.com/$1/made$2 [r=301,l] 

and url secondpart.maindomain.com/uk/furniture

i`m getting redirection to

http://firstpart.maindomain.com/uk/made/furniture

which fine after redirection there infinite loop (so except changing urls not working)

as turned out http_host both firstpart.maindomain.com/uk/made , secondpart.maindomain.com/uk same , secondpart.maindomain.com condition not working. came condition

rewritecond %{request_uri} !^made [nc] rewriterule ^([a-z]{2,3})(.*)$ http://firstpart.maindomain.com/$1/made$2 [r=301,l] 

so condition not met if there word 'made' inside uri , in case same in first rule.

i tried several different configurations nothing working.

when tested http://htaccess.madewithlove.be/ fine , there not redirection.

so im assuming there reverse proxy on cloudflare.

im not expert in htaccess tried lot of solutions , nothing working.

i appreciate it.

p.s. in case here .htaccess

<ifmodule mod_rewrite.c> rewriteengine on rewriterule .* - [e=http_authorization:%{http:authorization}]  rewriterule ^([a-z]{2,3})(.*)$ http://vendauat.lauraashley.com/$1/made$2 [r=301,l]  rewritecond %{request_uri}::$1 ^(/.+)/(.*)::\2$ rewriterule ^(.*) - [e=base:%1]   rewritecond %{env:redirect_status} ^$ rewriterule ^app\.php(/(.*)|$) %{env:base}/$2 [r=301,l]  rewritecond %{request_filename} -f rewriterule .? - [l]    rewriterule .? %{env:base}/app.php [l]  </ifmodule> 

this condition:

rewritecond %{request_uri} !^made [nc] 

will met because regex pattern says: if request never starts made, %{request_uri} variable always starts with /. maybe want instead:

rewritecond %{request_uri} !^/[^/]+/made/