#!/usr/bin/env bash

file="$1"


gamma=""
epsilon=""

countPositionBits(){
	ones=(0 0 0 0 0 0 0 0 0 0 0 0)
	#ones=(0 0 0 0 0)
	stdin="$(cat -)"

	while read line; do

		bitn=0
		while read bit; do
			if [ "$bit" -eq 1 ]; then
				ones[$bitn]=$((${ones[$bitn]} + 1))
			fi
			bitn=$(( bitn + 1 ))
		done < <(echo "$line" | grep -o .)


	done < <(echo "$stdin")

	printf '%s\n' "${ones[@]}"

}

dots(){
	seq $i | sed 's/.*/./' | tr -d '\n'
}

ogr="$(cat "$1")"
csr="$(cat "$1")"

echo "OGR"

i=0
while [ "$(echo "$ogr" | wc -l)" -gt 1 ]; do
	counts="$(echo "$ogr" | countPositionBits)"
	noofogr="$(echo "$ogr" | wc -l)"
	noofones="$( echo "$counts" | sed -n "$((i + 1))p" )"
	echo "$ogr"
	echo "No of ones $noofones"
	echo "No of ogr $noofogr"
	if [ "$((noofones * 10))" -ge "$(( noofogr * 10 / 2 ))" ]; then
		echo "Filtering only 1s in position $i"
		echo "^$(dots $i)1"
		ogr="$(echo "$ogr" | grep "^$(dots $i)1" )"
	else
		echo "Filtering only 0s in position $i"
		ogr="$(echo "$ogr" | grep "^$(dots $i)0" )"
	fi
	echo -e "\n---\n"
	i="$((i + 1))"
done

echo "CSR"

i=0
while [ "$(echo "$csr" | wc -l)" -gt 1 ]; do
	counts="$(echo "$csr" | countPositionBits)"
	noofcsr="$(echo "$csr" | wc -l)"
	noofones="$( echo "$counts" | sed -n "$((i + 1))p" )"
	echo "$csr"
	echo "No of ones $noofones"
	echo "No of csr $noofcsr"
	if [ "$((noofones * 10))" -ge "$(( noofcsr * 10 / 2 ))" ]; then
		echo "Filtering only 0s in position $i"
		echo "^$(dots $i)1"
		csr="$(echo "$csr" | grep "^$(dots $i)0" )"
	else
		echo "Filtering only 1s in position $i"
		csr="$(echo "$csr" | grep "^$(dots $i)1" )"
	fi
	echo -e "\n---\n"
	i="$((i + 1))"
done


ogrDecimal="$( echo "ibase=2; $ogr" | bc )"
csrDecimal="$( echo "ibase=2; $csr" | bc )"

echo "Oxxygen Generator Rating: $ogr -> $ogrDecimal"
echo "CO2 Scrubber Rating: $csr -> $csrDecimal"

echo "Answer: $((ogrDecimal * csrDecimal))"


#while read i; do
#	if [ "$i" -gt "$(( lines / 2 ))" ]; then
#		gamma="${gamma}1"
#		epsilon="${epsilon}0"
#	else
#		gamma="${gamma}0"
#		epsilon="${epsilon}1"
#	fi
#done < <(echo "")
#
#gammaDecimal="$( echo "ibase=2; $gamma" | bc )"
#epsilonDecimal="$( echo "ibase=2; $epsilon" | bc )"
#
#echo "Gamma: $gamma -> $gammaDecimal"
#echo "Epsilon: $epsilon -> $epsilonDecimal"
#
#echo "Answer: $((gammaDecimal * epsilonDecimal))"