upstream endpoint {
   server app-gateway-lua:3001;
}

server {

    listen       80;
    location / {
        root   /opt/html;
        index  index.html;
    }
    location /api {
      if ($request_method = 'OPTIONS') {
          add_header 'Access-Control-Allow-Origin' 'http://localhost:8080';
          add_header 'Access-Control-Allow-Methods' 'POST, GET, OPTIONS, DELETE, PUT';
          add_header 'Access-Control-Allow-Headers' 'Content-Type,x-requested-with';
          add_header 'Access-Control-Max-Age' 1728000;
          add_header 'Access-Control-Allow-Credentials' true;
          return 200;
      }

      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      add_header 'Access-Control-Allow-Origin' 'http://localhost:8080';
      add_header 'Access-Control-Allow-Methods' 'POST, GET, OPTIONS, DELETE, PUT';
      add_header 'Access-Control-Allow-Headers' 'Content-Type,x-requested-with';
      add_header 'Access-Control-Expose-Headers' '*';
      add_header 'Access-Control-Allow-Credentials' true;
      proxy_pass http://endpoint;
    }

}