{ config, lib, pkgs, ... }:
let cfg = config.my.services.nginx;
in
{
  options.my.services.nginx = with lib; { enable = mkEnableOption "Nginx"; };
  config = lib.mkIf cfg.enable {
    services.nginx = {
      enable = true;
      statusPage = true; # For monitoring scraping.
      recommendedGzipSettings = true;
      recommendedOptimisation = true;
      recommendedTlsSettings = true;
      recommendedProxySettings = true;
    };

    networking.firewall.allowedTCPPorts = [ 80 443 ];

    # Nginx needs to be able to read the certificates
    users.users.nginx.extraGroups = [ "acme" ];

    security.acme = {
      defaults.email = "franck@fcuny.net";
      acceptTerms = true;
    };

    services.prometheus = {
      exporters.nginx = {
        enable = true;
        listenAddress = "127.0.0.1";
      };
      scrapeConfigs = [{
        job_name = "nginx";
        static_configs = [{
          targets = [
            "127.0.0.1:${
              toString config.services.prometheus.exporters.nginx.port
            }"
          ];
          labels = { instance = config.networking.hostName; };
        }];
      }];
    };

    services.grafana.provision.dashboards = [{
      name = "NGINX";
      options.path = pkgs.nur.repos.alarsyo.grafanaDashboards.nginx;
      disableDeletion = true;
    }];
  };
}