#!/bin/sh
usage="utp -a|-l FILE"

if [ $# -eq "0" ]; then
	echo $usage;
	exit 65
fi

while getopts ":a:l:" option; do
	case $option in
		a)	p_start=$(head -n1 $OPTARG | cut -d' ' -f2)
			p_end=$(tail -n1 $OPTARG | cut -d' ' -f2)

			h_start=$(head -n1 $OPTARG | cut -d':' -f1)
			h_end=$(tail -n1 $OPTARG | cut -d':' -f1)
			h_diff=$(($h_end - $h_start))

			m_start=$(head -n1 $OPTARG | cut -d':' -f2)
			m_end=$(tail -n1 $OPTARG | cut -d':' -f2)
			m_diff=$(($m_end - $m_start))

			t_diff=$(($h_diff * 60 + $m_diff))

			cut -d' ' -f2 $OPTARG | uniq -c > s
			sum_time=0
			percent=100
			echo -e "Percent:\tTime:"
			i=1
			while [ $i -le $(wc -l s | cut -d' ' -f1) ]; do
				p=$(sed -n "${i}p" s | cut -c9-12 | sed "s/%//")
				if [ $p -lt $(($percent - 9)) ]; then
					sum_m=$(($sum_time / 60))
					sum_s=$(($sum_time - $sum_m * 60))
					echo  -e "$percent - $(($percent - 9)):\t${sum_m}m${sum_s}s"
					percent=$(($percent - 10))
					sum_time=0
				fi
				s=$(sed -n "${i}p" s | cut -c5-7)
				sum_time=$(($sum_time + $s))
				i=$(($i + 1))
			done
			rm s

			sum_m=$(($sum_time / 60))
			sum_s=$(($sum_time - $sum_m * 60))
			echo -e "$percent - 01:\t${sum_m}m${sum_s}s"

			echo "The script was logging from $p_start to $p_end in $t_diff minutes.";;

		l)	while true; do
				echo "$(date +%T), $(apm | cut -d' ' -f5)" | tee -a $OPTARG
				sleep 1
			done;;

		*)	echo $usage;;
	esac
done