#!/bin/sh

####################
# Name: move.sh
# Lisc: ISC
# Main: jadedctrl
# Desc: Move your bloody pieces!
#####################

na=0
algebraic_notation=0
force=0
for argument in $@
do
	case $argument in
		-a)
			na=1
			algebraic_notation=1
			;;
		-f)
			force=1
			;;
		*)
			if [ $na -eq 1 ]
			then
				move=$argument
				na=0
			else
				if echo $argument | grep "," > /dev/null
				then
					algebraic_notation=0
					move=$argument
				else
					file=$argument
				fi
			fi
			;;
	esac
done


if [ $algebraic_notation -eq 0 ]
then
	origin=$(echo $move | awk -F\- '{print $1}')
	dest=$(echo $move | awk -F\- '{print $2}')
	if grep $dest $file > /dev/null
	then
		if [ $force -eq 1 ]
		then
			sed 's/'"$origin"'/'"$dest"'/' $file > $file.new
			mv $file.new $file
		else
			sed 's/'"$dest"'/0,0/g' $file > $file.new
			sed 's/'"$origin"'/'"$dest"'/' $file.new > $file
		fi
	else
		sed 's/'"$origin"'/'"$dest"'/' $file > $file.new
		mv $file.new $file
	fi
fi