How to rewrite rules for NGINX?

Question

Nginx

There are the following rules in .htaccess, now the site needs to be transferred to a server with NGINX:

# The Friendly URLs part
# redirect all requests to /ru/favicon.ico
# to /favicon.ico
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(sr|ru)favicon.ico$ favicon.ico [L,QSA]

# redirect all requests to /en/assets* and /ru/assets* to /assets*
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(sr|ru)/assets(.*)$ assets$2 [L,QSA]

# redirect all other requests to  /ru/*
# to index.php and set the cultureKey parameter
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(sr|ru)?/?(.*)$ index.php?cultureKey=$1&q=$2 [L,QSA]

This is a rather crookedly made multilingualism.
Thanks in advance!

Answer 1

I write offhand, just to show the idea, I am not responsible for the correctness of the syntax.
HTTP Redirect with 301 response code (the rest are similar)
location /en/favicon.ico {
return 301/favicon.ico;
}
Translation to another location (it must be created, ie location /assets/ must exist).
Sequentially pass to other locations, if not found then return 403.
location /ru/ {
rewrite ^(/ru)/assets/(.*)$ /assets/$2 break;
rewrite ^(/ru)/favicon.ico$ /favicon.ico break;
rewrite ^(/en)/assets/(.*)$ $1/assets/$2 break;
rewrite ^(/en)/(.*)$ /index.php break;
return 403;
}