#!/bin/sh

usbmon() {
	usb1=$(lsblk -la | awk '/sdc1/ { print $1 }')
	usb1mounted=$(lsblk -la | awk '/sdc1/ { print $7 }')

	if [ "$usb1" ]; then
		if [ -z "$usb1mounted" ]; then
			echo " |"
		else
			echo " $usb1 |"
		fi
	fi
}

battery() {
  percentage=$(acpi -b | awk '{ print $4; }' | tr -d "%" | tr -d ",")
  state=$(acpi -b | awk '{ print $3; }' | tr -d ",")
  if [ $state = "Discharging" ]; then
    if [ $percentage -gt 75 ]; then
      state=""
    elif [ $percentage -gt 50 ]; then
      state=""
    elif [ $percentage -gt 25 ]; then
      state=""
    else
      state=""
    fi
  elif [ $state = "Full" ]; then
    state=""
  elif [ $state = "Charging" ]; then
    state=""
  fi
  echo "$state $percentage %"
}

fsmon() {
	ROOTPART=$(df -h | awk '/\/$/ { print $3}') 
	HOMEPART=$(df -h | awk '/\/home/ { print $3}') 
	SWAPPART=$(cat /proc/swaps | awk '/\// { print $4 }')

	echo "   $ROOTPART    $HOMEPART    $SWAPPART"
}

ram() {
	mem=$(free -h | awk '/Mem:/ { print $3 }' | cut -f1 -d 'i')
	echo  "$mem"
}

cpu() {
	read -r cpu a b c previdle rest < /proc/stat
	prevtotal=$((a+b+c+previdle))
	sleep 0.5
	read -r cpu a b c idle rest < /proc/stat
	total=$((a+b+c+idle))
	cpu=$((100*( (total-prevtotal) - (idle-previdle) ) / (total-prevtotal) ))
	echo  "$cpu"%
}

network() {
	conntype=$(ip route | awk '/default/ { print substr($5,1,1) }')

	if [ -z "$conntype" ]; then
		echo " down"
	elif [ "$conntype" = "e" ]; then
		echo " up"
	elif [ "$conntype" = "w" ]; then
		echo " up"
	fi
}

volume_pa() {
	muted=$(pactl list sinks | awk '/Mute:/ { print $2 }')
	vol=$(pactl list sinks | grep Volume: | awk 'FNR == 1 { print $5 }' | cut -f1 -d '%')

	if [ "$muted" = "yes" ]; then
		echo " muted"
	else
		if [ "$vol" -ge 65 ]; then
			echo " $vol%"
		elif [ "$vol" -ge 40 ]; then
			echo " $vol%"
		elif [ "$vol" -ge 0 ]; then
			echo " $vol%"	
		fi
	fi

}

clock() {
	dte=$(date +"%D")
	time=$(date +"%H:%M")

	echo " $dte  $time"
}

main() {
	while true; do
    dwm -s " $(usbmon) $(ram) | $(cpu) | $(battery) | $(network) | $(volume_pa) | $(clock)"
		sleep 1
	done
}

main