user  nginx;
worker_processes  1;

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

events {
    worker_connections  1024;
}

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

    log_format json_combined escape=json
      '{'
        '"time_local":"$time_local",'
        '"remote_addr":"$remote_addr",'
        '"remote_user":"$remote_user",'
        '"request":"$request",'
        '"request_id":"$request_id",'
        '"request_host":"$host",'
        '"response_status": "$status",'
        '"body_bytes_sent":"$body_bytes_sent",'
        '"request_time":"$request_time",'
        '"http_referrer":"$http_referer",'
        '"http_user_agent":"$http_user_agent"'
      '}';

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

    sendfile        on;

    keepalive_timeout  65;

    gzip on;
    gzip_disable "msie6";
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_buffers 16 8k;
    gzip_http_version 1.1;
    gzip_min_length 512;
    gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss application/javascript application/vnd.ms-fontobject application/x-font-ttf font/opentype image/svg+xml image/x-icon font/woff2;

    map $sent_http_content_type $cache_expires {
        default                    off;
        text/html                  epoch;
        text/css                   max;
        application/javascript     max;
        ~image/                    max;
    }

    server {
        listen 80;
        listen [::]:80;

        root /usr/share/nginx/html;
        index indexV2.html;

        access_log /dev/stdout;
        error_log  /dev/stderr error;

        expires $cache_expires;

        # Redirect old /index.html requests to new file
        location = /index.html {
            return 301 /indexV2.html;
        }

        # Serve indexV2.html directly without redirect loop
        location = /indexV2.html {
            root /usr/share/nginx/html;
        }

        # Fallback for SPA routing — all unmatched routes go to indexV2.html
        location / {
            try_files $uri /indexV2.html;
        }
    }


    # Healthcheck
    server {
        listen      8080;

        location /health {
            add_header Content-Type text/plain;
            return 200 'OK';
        }
    }
}