Multiple variables in a single map directive - nginx

Question

I have the following map based on the value of a cookie:
map $cookie_version $version_host {
default 172.17.0.1:8001;
2.65.1 172.17.0.1:8001;
2.65.2 172.17.0.1:8003;
}
However I need the same map for the value of a header:
map $http_app_version $version_api_host {
default 172.17.0.1:8001;
2.65.1 172.17.0.1:8001;
2.65.2 172.17.0.1:8003;
}
Is there a way to not duplicate the map?
My server block:
server {
listen 443 ssl;
ssl_certificate /etc/ssl/nexello.crt;
ssl_certificate_key /etc/ssl/nexello.key;
server_name _;
proxy_set_header Host $host;
proxy_set_header X-FORWARDED-FOR $remote_addr;
charset utf-8;
location / {
# Web based access
# Cookies are used instead of a header because the request passes through here before any javascript can even set a Header.
if ($cookie_token) {
proxy_pass https://$version_host;
}
# API based access
# Here we use headers because anyone that is using the API has full control of the headers.
if ($http_authorization) {
proxy_pass https://$version_api_host;
}
# Auth
# In case there is no header or cookie we assume that it has no access token and should be redirected to the auth machine.
proxy_pass https://172.17.0.1:7001;
}
}

Answer 1

You could use
map $cookie_version$http_app_version $version_host {
default 172.17.0.1:8001;
# your complicated regex here since two variables will be concatenated.
}
and use $version_host in proxy_pass.
Also offtopic, since you're using if be careful with it
https://www.nginx.com/resources/wiki/start/topics/depth/ifisevil/

Answer 2

I somewhat solved this as while there still is two maps, the options are stored in another file so there won't be any reptition:
map $cookie_version $version_cookie_host {
include /etc/nginx/versions.conf;
}
map $http_authorization $version_header_host {
include /etc/nginx/versions.conf;
}
Contents of /etc/nginx/versions.conf:
default 172.17.0.1:8001;
2.65.1 172.17.0.1:8001;
2.65.2 172.17.0.1:8003;