#!/bin/sh
# Script que muestra un panel con información del sistema
# Dependencias: xsetroot, alsa-utils, moc
#
# Autor: O. Sánchez <o-sanchez@linuxmail.org>

while true;
do
DATE=$(date +" %a %d %b  %R")
TEMP=$(sed 's/000$/°C/' /sys/class/thermal/thermal_zone1/temp)
MEM=$(free -h | awk '/^Mem:/ {print $3}')
CPU=$(top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1"%"}')
VOL() {
	a=$(amixer sget Master | tail -n1 | sed -r "s/.*\[(.*)\]/\1/")
	b=$(amixer get Master | tail -n1 | sed -r "s/.*\[(.*)%\].*/\1/")

	if [ "$a" = 'on' ]; then
		printf " $b%%"
	else
		printf "";
	fi
}
SONG() {
	if [ "$(pgrep mocp)" ]; then
		if [ "$(mocp -Q %state)" = "PLAY" ];then
			SONG=$(mocp -Q %song)
			if [ -n "$SONG" ]; then
				echo " $SONG - $(mocp -Q %album) |"
			else
				echo " $(mocp -Q %file) |"
			fi
		fi
	else
		echo ""
	fi
}
BAT() {
	bat_dir=/sys/class/power_supply/BAT1
	read -r capacity < "$bat_dir/capacity"
	read -r status   < "$bat_dir/status"

	printf '%s%% [%s]\n' "$capacity" "$status"
}
xsetroot -name "$(SONG) CPU $CPU | MEM $MEM | TEMP $TEMP | $(VOL) | $DATE | $BAT"
	sleep 1
done