upstream puma {
  server fabmanager:3000;
}

server {
  listen 80;
  server_name MAIN_DOMAIN;
  root /usr/src/app/public;

  location ^~ /packs/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  try_files $uri/index.html $uri @puma;
  location @puma {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_redirect off;
    proxy_pass http://puma;
  }

  client_max_body_size 4G;
  keepalive_timeout 10;

  error_page 500 502 504 /500.html;
  error_page 503 @503;

  # Return a 503 error if the maintenance page exists.
  if (-f /usr/src/app/public/maintenance.html) {
    return 503;
  }

  location @503 {
    # Serve static assets if found.
    if (-f $request_filename) {
      break;
    }

    # Set root to the shared directory.
    root /usr/src/app/public/;
    rewrite ^(.*)$ /maintenance.html break;
  }

  location /.well-known/acme-challenge {
    root /etc/letsencrypt/webrootauth;
    default_type "text/plain";
  }

  # no spam bot
  if ($http_referer ~* (guardlink.org|free-share-buttons|social-buttons|buy-cheap-online.info|social-buttons.com|free-share-buttons.com|darodar.com|blackhatworth.com|hulfingtonpost.com|priceg.com|semalt.com|imaspammer.com|iedit.ilovevitaly.com|7makemoneyonline.com|iedit.ilovevitaly.com|7makemoneyonline.com|gamersyde.com|iloveitaly.com|econom.co|semalt.com|forum.topic44637676.darodar.com|darodar.com|iskalko.ru|ilovevitaly.ru|ilovevitaly.com|ilovevitaly.co|o-o-8-o-o.ru|o-o-6-o-o.ru|buttons-for-website.com|semalt.semalt.com|cenoval.ru|priceg.com|darodar.com|cenokos.ru|seoexperimenty.ru|gobongo.info|vodkoved.ru|adcash.com|websocial.me|cityadspix.com|luxup.ru|ykecwqlixx.ru|superiends.org|slftsdybbg.ru|edakgfvwql.ru|socialseet.ru|screentoolkit.com|econom.co|semalt.com|savetubevideo.com|shopping.ilovevitaly.com|iedit.ilovevitaly.com|forum.topic52548358.darodar.com|forum.topic53813291.darodar.com|share-buttons.com|event-tracking.com|success-seo.com|free-floating-buttons.com|get-free-social-traffic.com|chinese-amezon.com|get-free-traffic-now.com|free-social-buttons.com|videos-for-your-business.com)) { return 403; }

}
