#!/bin/sh

TIMER_PATH="/home/melvin/.timer"

if [ "$1" = "run" ]; then
	# relax if zero at start
	if [ "$(cat "$TIMER_PATH")" -le "0" ]; then
		echo "$TIMER_PATH" | entr -npz true
	fi

	while true; do
		curr=$(cat "$TIMER_PATH")
		next=$((curr - 5))
		echo $next | tee "$TIMER_PATH"

		if [ "$next" -le "0" ]; then
			notify-send "Timer ended"
			echo 0 | tee "$TIMER_PATH"
			echo "$TIMER_PATH" | entr -npz true
		fi

		sleep 5
	done
elif [ "$1" = "get" ]; then
	curr=$(cat "$TIMER_PATH")
	if [ "$curr" -gt "3600" ]; then
		str="$((curr / 3600)):$(((curr % 3600) / 60))h"
	elif [ "$curr" -gt "60" ]; then
		str="$((curr / 60)):$((curr % 60))m"
	else
		str="${curr}s"
	fi
	echo "$str"
elif [ "$1" = "set" ]; then
	num=$(printf "%s" "$2" | head -c-1)
	unit=$(printf "%s" "$2" | tail -c1)
	if [ "$unit" = "h" ]; then
		secs=$((num * 3600))
	elif [ "$unit" = "m" ]; then
		secs=$((num * 60))
	else
		secs=$num
	fi
	echo "$secs" | tee "$TIMER_PATH"
elif [ "$1" = "inc" ]; then
	curr=$(cat "$TIMER_PATH")
	next=$((curr + 300))
	echo $next | tee "$TIMER_PATH"
	xsetroot -name "$(stats quick)"
elif [ "$1" = "dec" ]; then
	curr=$(cat "$TIMER_PATH")
	next=$((curr - 300))
	echo $next | tee "$TIMER_PATH"
	xsetroot -name "$(stats quick)"
fi