#!/bin/sh

font=;

clock() {
	date '+%H:%M %d-%m-%y'
}

# get the battery capacity and status
battery() {
	BATC=/sys/class/power_supply/BAT0/capacity
	BATS=/sys/class/power_supply/BAT0/status

	# prepend percentage with a '+' if charging, '-' otherwise
	test "`cat $BATS`" = "Charging" && echo -n '+' || echo -n '-'
	echo $BATC
}

volume() {
	# get master volume level from amixer

	# parse amixer output to get ONLY the level. Will output "84%"
	# we need `uniq` because on some hardware, The master is listed twice in
	# "Front Left" and Front Right" (because laptop speakers I guess)
	amixer get Master | sed -n 's/^.*\[\([0-9]\+\)%.*$/\1/p'| uniq
}

network() {
	infs=$(ip link | sed -n 's/^[0-9]: \(.*\):.*$/\1/p')
	lo=$(echo $infs | awk '{print $1}')
	int1=$(echo $infs | awk '{print $2}')
	int2=$(echo $infs | awk '{print $3}')

	#iwconfig returns an error code if the interface  tested has no wireless extensions
	if iwconfig $int1 >/dev/null 2>&1; then
		wifi=$int1
		eth0=$int2
	else
		wifi=$int2
		eth0=$int1
	fi

	ip link show $eth0 | grep 'state UP' >/dev/null && int=$eth0 || int=$wifi
	printf $int
	ping -c1 -s1 8.8.8.8 >/dev/null 2>&1 && echo "connected" || echo "disconnected"

}

# get cpu load (TODO- get this using iostat)


# get ram usage
memused() {
	# store the total and free memory in two variables
	t=$(grep -E 'MemTotal' /proc/meminfo |awk '{print $2}')
	f=$(grep -E 'MemFree' /proc/meminfo |awk '{print $2}')
	b=$(grep -E '^(Buffers)' /proc/meminfo |awk '{print $2}')
	c=$(grep -E '^(Cached)' /proc/meminfo |awk '{print $2}')

	# then, calcultate the percentage of memory used
	bc | "100($t -$f -$c -$b) / $t"
}