#! /bin/sh -e

source=/var/alternc/html
target=/srv/alternc/html

set -- `getopt vn $*`

for i ; do
	case "$1" in
	-h)
		echo "this script aims to ease migration of alternc accounts between disks"
		echo "it only migrates /var/alternc/html (to /srv/alternc/html) right now"
		echo "you need to pass the name of the accounts you want to migrate"
		echo ""
		echo "example: $0 -v admin"
		echo ""
		echo "a symlink is done between /var/alternc/html and /srv/alternc/html"
		echo "the original directory is renamed but not erased, in case there are bugs in this script..."
		exit
		;;
	-v)
		verbose=1
		;;
	-n)
		dryrun=1
		;;
	--)
		shift
		break
		;;
	esac
	shift	
done

for account in $*; do
	fl=`echo $account | sed 's/^\(.\).*$/\1/'`
	if ! [ -d $source/$fl/$account ] || [ -h $source/$fl/$account ] ; then 
		echo $account already migrated, skipping
		continue
	fi
	[ $verbose ] && echo "===> syncing account $account"
	if ! [ -d $target/$fl/$account ] ; then
		[ $dryrun ] || mkdir -p $target/$fl
		[ $dryrun ] || (cd $source/$fl && tar cf - $account | pv | ( cd $target/$fl && tar xf - ))
	fi
	[ $dryrun ] || mv $source/$fl/$account $source/$fl/$account.old
	[ $dryrun ] || rsync -a $source/$fl/$account.old/ $target/$fl/$account/
	[ $dryrun ] || ln -s $target/$fl/$account $source/$fl/$account
	[ $verbose ] && echo "$source/$fl/$account.old/ can be destroyed"
done