load_module modules/ngx_http_brotli_static_module.so;

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log notice;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;

    keepalive_timeout  65;

    #gzip-static  on;

    proxy_cache_path /var/cache/nginx keys_zone=owl_cache:20m inactive=24h;

    upstream backend {
        # Within Kubernetes:
        server owlboard-backend:8460;

        # External to Kubernetes:
        #server 172.30.129.19:8460;

        # Within Docker:
        #server owlboard-backend:8460
    }

    server {
        listen       80;
        listen  [::]:80;
        server_name  localhost;
        proxy_cache owl_cache;

        add_header Content-Security-Policy "default-src 'self'";

        location / {
            root /usr/share/nginx/html;
            index index;
            gzip_static on;
            brotli_static on;
            error_page 500 502 503 504 /err/50x.html;
            error_page 404 /err/404;
            try_files $uri.html $uri $uri/index.html $uri/ =404;
            add_header Cache-Control "public, no-transform, max-age=1209600";

            if ($uri ~* \.html$) {
                return 404;
            }
        }

        location /misc/ {
            proxy_pass http://backend;
        }

        location /api/ {
            proxy_pass http://backend;
            proxy_cache_key $scheme://$host$uri$is_args$query_string;
            proxy_ignore_headers Cache-Control;
            proxy_cache_valid 200 2m;  # Evaluate whether 2m or 1m is more appropriate
            add_header Cache-Control "private, no-transform, max-age=120";
        }

    }
}