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# based on https://code.tvl.fyi/tree/users/glittershark/system/system/modules/reusable/battery.nix
{ config, lib, pkgs, ... }:
let
inherit (pkgs.vuizvui.profpatsch)
getBins
;
cfg = config.vuizvui.hardware.low-battery;
bins = getBins pkgs.systemd [ "systemctl" ];
in {
options = {
vuizvui.hardware.low-battery = {
enable = lib.mkEnableOption "suspend on low battery";
treshold = lib.mkOption {
description = "Percentage treshold on which to suspend";
type = lib.types.int;
default = 5;
};
action = lib.mkOption {
description = "Type of suspend action to perform when treshold is reached";
type = lib.types.enum [
"hibernate"
"suspend"
"suspend-then-hibernate"
];
default = "suspend";
};
};
};
config = lib.mkIf cfg.enable {
services.udev.extraRules = lib.concatStrings [
''SUBSYSTEM=="power_supply", ''
''ATTR{status}=="Discharging", ''
''ATTR{capacity}=="[0-${toString cfg.treshold}]", ''
''RUN+="${bins.systemctl} ${cfg.action}"''
];
};
}
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