dotfiles/home/.config/eww/scripts/gammarelay

#!/usr/bin/env bash

if [ "$1" = "temperature" ]; then
	watch_cmd="{t}"
	update_cmd="UpdateTemperature"
	update_signature="n"
	set_cmd="Temperature"
	set_signature="q"
	default_val=6500
	click_val=4500
	scroll_change=100
	cmp_op="<"

elif [ "$1" = "brightness" ]; then
	watch_cmd="{bp}"
	update_cmd="UpdateBrightness"
	update_signature="d"
	set_cmd="Brightness"
	set_signature="d"
	default_val=1
	click_val=0.8
	scroll_change=0.02
	cmp_op="<"

elif [ "$1" = "gamma" ]; then
	watch_cmd="{g}"
	update_cmd="UpdateGamma"
	update_signature="d"
	set_cmd="Gamma"
	set_signature="d"
	default_val=1
	click_val=1.1
	scroll_change=0.02
	cmp_op=">"

else
	>&2 echo "Invalid option, first argument must be one of: temperature, brightness, gamma"
	exit 1
fi

if [ "$2" = "watch" ]; then
	exec wl-gammarelay-rs watch "$watch_cmd"

elif [ "$2" = "get" ]; then
	exec busctl --user get-property rs.wl-gammarelay / rs.wl.gammarelay "$set_cmd" | cut -d' ' -f2

elif [ "$2" = "scroll" ]; then
	if [ "$3" = "up" ]; then
		sign="+"
	elif [ "$3" = "down" ]; then
		sign="-"
	else
		>&2 echo "Invalid sign, second argument must be one of: up, down"
		exit 1
	fi

	exec busctl --user -- call rs.wl-gammarelay / rs.wl.gammarelay "$update_cmd" "$update_signature" ${sign}${scroll_change}

elif [ "$2" = "set" ]; then
	mode="$3"
	if [ "$mode" = "toggle" ]; then
		cur_val="$(busctl --user get-property rs.wl-gammarelay / rs.wl.gammarelay "$set_cmd" | cut -d' ' -f2)"
		if [ "$(echo "$cur_val $cmp_op $default_val" | bc -l)" = "1" ]; then
			mode="off"
		else
			mode="on"
		fi
	fi

	if [ "$mode" = "on" ]; then
		exec busctl --user -- set-property rs.wl-gammarelay / rs.wl.gammarelay "$set_cmd" "$set_signature" "$click_val"
	elif [ "$mode" = "off" ]; then
		exec busctl --user -- set-property rs.wl-gammarelay / rs.wl.gammarelay "$set_cmd" "$set_signature" "$default_val"
	else
		>&2 echo "Invalid mode, third argument, must be one of: toggle, on, off"
		exit 1
	fi

else
	>&2 echo "Invalid operation, second argument must be one of: watch, scroll, set"
	exit 1
fi