user  nginx;
worker_processes  auto;

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  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;

    keepalive_timeout  65;

    server {
        listen 80;
        server_name decla.red;
        server_tokens off;

        location /.well-known/acme-challenge/ {
            root /var/www/certbot;
        }

        location / {
            return 301 https://$host$request_uri;
        }
    }

    server {
        listen 443 ssl;
        server_name decla.red;
        server_tokens off;

        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

        ssl_certificate /etc/letsencrypt/live/decla.red/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/decla.red/privkey.pem;
        include /etc/letsencrypt/options-ssl-nginx.conf;
        ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

        location ~ ^/(502).html$ {
            root /usr/share/nginx/html/errors;
            internal;
        }

        location / {
            proxy_pass  http://frontend;
            proxy_set_header    Host                $http_host;
            proxy_set_header    X-Real-IP           $remote_addr;
            proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
        }

        error_page 502 /502.html;
    }
}