{
  config,
  lib,
  pkgs,
  ...
}:

{

  options.zpha.services.batsignal.enable = lib.mkEnableOption "batsignal";

  config = lib.mkIf config.zpha.services.batsignal.enable {
    users.users.zaphyra.maid = {
      systemd.services.batsignal = {
        description = "batsignal - battery monitor daemon";
        after = [ "niri-session.target" ];
        partOf = [ "niri-session.target" ];
        wantedBy = [ "niri-session.target" ];

        serviceConfig = {
          Restart = "on-failure";
          ExecStart =
            let
              args = [
                # expire notifications
                "-e"
                # show message when battery begins charging/discharging
                "-p"
                # minimum number of SECONDS to wait between battery checks
                "-m10"
                # bat levels
                "-w20"
                "-c10"
                "-d5"
                "-D"
                "systemctl suspend"
              ];
            in
            "${lib.getExe pkgs.batsignal} ${lib.escapeShellArgs args}";
        };
      };
    };
  };

}