nixos/modules/hardware/battery.nix

{ config, lib, ... }:

let
	inherit (lib) mkOption types;
in
	{

	options.batMode = mkOption {
		type = types.enum [ "single" "double" ];
		default = "single";
	};

	config = {
		powerManagement.powertop.enable = true;
		services.upower = {
			enable = true;

			# In accordance with the waybar battery colors
			percentageLow = 30;
			percentageCritical = 20;
			percentageAction = 10;

			criticalPowerAction = "PowerOff"; # This can destroy work
			usePercentageForPolicy = true;
		};

		services.tlp = if config.batMode == "single" then {
			enable = true;
			settings = {
				START_CHARGE_THRESH_BAT0 = 65;
				STOP_CHARGE_THRESH_BAT0 = 85;

				CPU_SCALING_GOVERNOR_ON_AC = "performance";
				CPU_ENERGY_PERF_POLICY_ON_AC = "performance";

				CPU_MIN_PERF_ON_AC = 0;
				CPU_MAX_PERF_ON_AC = 100;
				CPU_MIN_PERF_ON_BAT = 0;
				CPU_MAX_PERF_ON_BAT = 65;
			};
		} else {
			enable = true;
			settings = {
				CPU_SCALING_GOVERNOR_ON_AC = "performance";
				CPU_SCALING_GOVERNOR_ON_BAT = "powersave";

				CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
				CPU_ENERGY_PERF_POLICY_ON_AC = "performance";

				CPU_MIN_PERF_ON_AC = 0;
				CPU_MAX_PERF_ON_AC = 100;
				CPU_MIN_PERF_ON_BAT = 0;
				CPU_MAX_PERF_ON_BAT = 75;

				# 0 is first
				START_CHARGE_THRESH_BAT0 = 60;
				STOP_CHARGE_THRESH_BAT0 = 85;

				# 1 is second
				START_CHARGE_THRESH_BAT1 = 60;
				STOP_CHARGE_THRESH_BAT1 = 85;
			};
		};

	};
}