# DoS Mitigation
limit_req_zone $binary_remote_addr zone=one:10m rate=3r/m;
limit_conn_zone $binary_remote_addr zone=addr:10m;

{% if be_app_repo is defined %}
upstream puma {
  server unix:{{puma_sockfile}} fail_timeout=0;
}
{% endif %}
server {
  listen 80;
  return 301 https://$host$request_uri;
}

server {
  listen 443 http2 default_server;
  listen [::]:443 ssl http2 default_server;


{% if letsencrypt.hostname %}
  server_name {{ letsencrypt.hostname }};
{% endif %}

  ssl on;
{% if letsencrypt.enabled %}
  ssl_certificate /etc/letsencrypt/live/{{ letsencrypt.hostname }}/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/{{ letsencrypt.hostname }}/privkey.pem;
{% else %}
  ssl_certificate /etc/nginx/ssl/self-signed.crt;
  ssl_certificate_key /etc/nginx/ssl/self-signed.key;
{% endif %}
  ssl_dhparam /etc/nginx/ssl/dhparam.pem;

  ssl_protocols TLSv1.1 TLSv1.2;

  ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';

  ssl_prefer_server_ciphers on;
  ssl_ecdh_curve secp384r1;
  ssl_session_cache shared:SSL:10m;
  ssl_session_tickets off;
  add_header Strict-Transport-Security "max-age=31536000; preload" ;
  ssl_session_timeout 2h;
  ssl_stapling on;
  ssl_stapling_verify on;


  resolver 8.8.8.8 8.8.4.4 valid=300s;
  resolver_timeout 5s;

  add_header X-Frame-Options "DENY";
  add_header Public-Key-Pins 'pin-sha256="klO23nT2ehFDXCfx3eHTDRESMz3asj1muO+4aIdjiuY="; pin-sha256="633lt352PKRXbOwf4xSEa1M517scpD3l5f79xMD9r9Q="; max-age=2592000; includeSubDomains';

  # DoS Mitigation
  client_body_timeout 5s;
  client_header_timeout 5s;

{% if fe_app_repo is defined%}
  root {{ fe_app_path }}/dist;
{% else %}
  root {{ be_app_path }}/public;
{% endif %}

  if (-f $document_root/system/maintenance.html) {
    return 503;
  }
  error_page 503 @maintenance;
  location @maintenance {
    rewrite  ^(.*)$  /system/maintenance.html last;
    break;
  }

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

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

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;

  if (-f $document_root/system/maintenance.html) {
    return 503;
  }
  error_page 503 @maintenance;
  location @maintenance {
    rewrite  ^(.*)$  /system/maintenance.html last;
    break;
  }
}