{
  config,
  lib,
  ...
}:
let
  inherit (lib) mkOption types;
in
{
  imports = [
    ./cadvisor.nix
    ./node.nix
    ./nginx.nix
    ./postgres.nix
  ];

  options.bagel = {
    meta.monitoring = {
      address = mkOption {
        description = "Node's public address";
        type = types.str;
      };
      exporters = mkOption {
        description = "List of all exporters to scrape";
        type = types.listOf (types.submodule {
          options.port = mkOption {
            description = "Exporter port";
            type = types.int;
          };
        });
        default = [];
      };
    };
  };

  config.networking.firewall.allowedTCPPorts = map (e: e.port) config.bagel.meta.monitoring.exporters;
}