#!/bin/bash
outfile=""
infile="restofgreatbook.txt"
tempfile="restofgreatbook.txt.copy"


split(){
	outfile=$(head -n 1 $infile).txt
	headline=$1
	tailline=$(($1+1))
	if [[ $1 != "" ]]; then
		echo $headline
		echo $tailline
		clear
		head -n $headline $infile
		echo " "
#		echo " "
		echo "Lines count (102 for 100 items, 52 for 50 items): "$headline
		yn=y
		read -p "Continue with this list? [Y/n]" yn
		case $yn in
			[Yy]*) 
				head -n $headline $infile > "$outfile"
				cp $infile $tempfile
				tail -n +$tailline $tempfile > $infile
				;;
			[Nn]*)
				echo "split aborted"
				exit
				;;
		esac
	else
		echo "missing number"
		echo "use 'greatSplitter.sh count | head' to get the next line number "
		exit 1
	fi
#	echo "hello test"
#	echo $headline
#	echo $tailline
	echo $outfile
	echo $1
}

linecount(){
	let count=0
	while read line; do
		let count=$count+1
		if [ "$line" = "" ]; then
			echo $count
			echo $line
		fi
	done < $infile
}

case $1 in

	count)
		linecount | head -n 1
		;;
	
	split)
		split $(linecount | head -n 1)
		;;
esac