#!/bin/bash

# Written by Ewan Leith 2011
# Version Tracking done quickly and simply
# The ec script needs a directory called /var/echange to exist and be writeable by anyone using the script
# or for the per-user directory /var/echange/USERNAME to exist already and be owned by that user


CURRENTDIR=`pwd`
TIMESTAMP=`date "+%Y%m%d%H%M"`
ECHANGEDIR=/var/echange/`whoami`


if [ ! -d ${ECHANGEDIR} ]
then
	mkdir ${ECHANGEDIR}
	if [ $? -ne 0 ]
	then
		echo "Unable to create ${ECHANGEDIR}, exiting"
		exit
	fi
	chmod 700 ${ECHANGEDIR}
fi


if [ $# -eq 0 ]
then
	echo "No files passed, exiting"
	exit
fi

echo "echange Tracking Message:"
read MESSAGE

for ARG in "$@"
do
	#echo $ARG
	if [ -e $ARG ]
	then
		BASEFILE=`basename $ARG`
		#echo $BASEFILE

		if [ -e  ${ECHANGEDIR}/${BASEFILE}.${TIMESTAMP} ]
		then
			BASEFILE=${BASEFILE}.$$
		fi			
		echo "$ARG is a file, copying to ${ECHANGEDIR}/${BASEFILE}.${TIMESTAMP}"

		cp "$ARG" "${ECHANGEDIR}/${BASEFILE}.${TIMESTAMP}"
		echo "echange original file: $ARG" >>  "${ECHANGEDIR}/${BASEFILE}.${TIMESTAMP}.echange"
		echo "echange tracking message: ${MESSAGE}" >>  "${ECHANGEDIR}/${BASEFILE}.${TIMESTAMP}.echange"
	else
		echo "$ARG is not a file, can't track it!"
	fi
done