#!/bin/bash

exec="/usr/local/bin/factorio"

notify="notify-send"
limit="3600" #seconds / day
logfile="$HOME/.timeout-$(basename "$exec")"

today="$(date -I)"
start="$(date +%s)"
last="$(tail -n 1 $logfile)"
remaining="$(bc <<< "$limit - 0$(grep -q "$today" <<< "$last" && cut -d "T" -f 2 <<< "$last")")"

if test "$remaining" -le "0" ; then
	"$notify" "Time limit exceeded for today" &
	exit 1
fi

function conclude()	{
	end="$(date +%s)"

	grep -q "$today" <<< "$last" && end="$(bc <<< "$(cut -d "T" -f 2 <<< "$last") + "$end"")"

	time="$(bc <<< "$end - $start")"

	echo "${today}T${time}" >> "$logfile"
}

"$exec" &

while test "$(wc -l <<< "$pid")" -le 1 ; do
	pid="$(pgrep factorio)"
done

( sleep "$remaining" ; "$notify" "Time limit reached." "1 minute to extinction." & sleep 60 ; kill $(tr "\n" " " <<< "$pid") ; conclude ) &
killer="$!"

wait "$(head -n2 | tail -n1 <<< "$pid")"
conclude
kill "$killer"