{ config, lib, pkgs, ... }: with import <stockholm/lib>; let cfg = config.krebs.power-action; out = { options.krebs.power-action = api; config = lib.mkIf cfg.enable imp; }; api = { enable = mkEnableOption "power-action"; battery = mkOption { type = types.str; default = "BAT0"; }; user = mkOption { type = types.string; default = "power-action"; }; startAt = mkOption { type = types.str; default = "*:0/1"; }; plans = mkOption { type = with types; attrsOf (submodule { options = { charging = mkOption { type = nullOr bool; default = null; description = '' check for charging status. null = don't care true = only if system is charging or unknown false = only if system is discharging ''; }; upperLimit = mkOption { type = int; }; lowerLimit = mkOption { type = int; }; action = mkOption { type = path; }; }; }); }; }; imp = { systemd.services.power-action = { serviceConfig = rec { ExecStart = startScript; User = cfg.user; }; startAt = cfg.startAt; }; }; startScript = pkgs.writeDash "power-action" '' set -euf power="$(${powerlvl})" state="$(${state})" ${concatStringsSep "\n" (mapAttrsToList writeRule cfg.plans)} ''; charging_check = plan: if (plan.charging == null) then "" else if plan.charging then ''&& [ "$state" = "true" ]'' else ''&& ! [ "$state" = "true" ]'' ; writeRule = _: plan: "if [ $power -ge ${toString plan.lowerLimit} ] && [ $power -le ${toString plan.upperLimit} ] ${charging_check plan}; then ${plan.action}; fi"; powerlvl = pkgs.writeDash "powerlvl" '' cat /sys/class/power_supply/${cfg.battery}/capacity ''; state = pkgs.writeDash "state" '' if [ "$(cat /sys/class/power_supply/${cfg.battery}/status)" = "Discharging" ] then echo "false" else echo "true" fi ''; in out