events {}

http {
    # 1 = log, 0 = don't log (based on path)
    map $uri $loggable_uri {
        default 1;
        ~^/_next                0;
        =/favicon.webp          0;
        =/robots.txt            0;
        =/api/auth/get-session  0;
        =/monitoring            0;
        ~^/api/.*/count$        0;
        =/api/health            0;
    }

    # 1 = log, 0 = don't log (based on header)
    map $http_rsc $loggable_prefetch {
        default 1;
        ""      1;   # header not present
        ~.+     0;   # header exists (any value)
    }

    # final decision: log only if BOTH say yes
    map "$loggable_uri:$loggable_prefetch" $loggable {
        default 0;
        "1:1"   1;
    }

    log_format clean ' $request_method $uri $status';
    access_log /var/log/nginx/access.log clean if=$loggable;

    upstream backend {
        server app:3000;
    }

    server {
        listen 80;
        resolver 127.0.0.11 valid=5s ipv6=off;

        location / {
            proxy_pass http://backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;

            # SSE SETUP
            proxy_http_version 1.1;
            proxy_set_header Connection "";
            proxy_buffering off;
            proxy_read_timeout 200s;
        }
    }

    client_max_body_size 100M;
}