{ pkgs, config, ... }:
{
  services.nginx.virtualHosts.${config.services.grafana.settings.server.domain} = {
    locations."/" = {
      proxyPass = "http://${toString config.services.grafana.settings.server.http_addr}:${toString config.services.grafana.settings.server.http_port}";

      proxyWebsockets = true;
    };
  };

  services.grafana = {
    enable = true;

    settings = {
      server = {
        domain = "grafana.katkak.dev";
        http_addr = "127.0.0.1";
        http_port = 2342;
      };
    };

    provision = {
      datasources.settings.datasources = [
        {
          name = "Prometheus";
          type = "prometheus";
          url = "http://${config.services.prometheus.listenAddress}:${toString config.services.prometheus.port}";
        }
      ];
    };
  };

  services.prometheus = {
    enable = true;

    port = 9001;

    exporters = {
      node = {
        enable = true;

        enabledCollectors = [ "systemd" ];

        port = 9002;
      };
    };

    scrapeConfigs = [
      {
        job_name = "nixos";

        static_configs = [
          {
            targets = [
              "127.0.0.1:${toString config.services.prometheus.exporters.node.port}"
            ];
          }
        ];
      }
    ];
  };
}