#!/usr/bin/env bash 

set -eu

VAR=""

synopsis() {
	cat << EOF
Usage : `basename $0` [-h] system [variable]
EOF
}

help() {
	cat << EOF

`basename $0` affiche des informations sur un système.
Si une variable est précisée, son contenu est affiché.

Exemple : `basename $0` societe PUBLIC_IP

`synopsis`

-h	: affiche cette aide

EOF
}

usage() {
	synopsis
	exit 1
}

args() {
	local opt
	while getopts "hr" opt; do
		case $opt in
			h) help; exit 0;;
			?) usage;;
		esac
	done
	shift $(($OPTIND - 1))

	[ $# -gt 2 ] && usage
	[ $# -lt 1 ] && usage

	[ $# -eq 2 ] && VAR=$2

	GUEST_NAME="$1"
}


# Programme principal

VDN_PATH=$(readlink -f $(dirname $0)/..); . $VDN_PATH/bin/functions.sh

args "$@"

. $VDN_PATH/allocators/$VDN_RESOURCES_ALLOCATOR

setGuestVars $GUEST_NAME

GUEST_OWNER=$USER

loadGuestVars $GUEST_NAME

PUBLIC_IP=$(computePublicIp $GUEST_NAME 0 || :)
MAC_0=$(computeMacAddr $GUEST_NAME 0)

if [ -z "$VAR" ]; then
	cat <<-EOF
	MODE=$MODE
	GUEST_NAME=$GUEST_NAME
	GUEST_PATH="$GUEST_PATH"
	GUEST_SYS=$GUEST_SYS
	EMULATOR="$EMULATOR"
	MEMORY="$MEMORY"
	HDA="$HDA"
	AUFS_SIZE="$AUFS_SIZE" AUFS_FILE="$AUFS_FILE" 
	SWAP_SIZE="$SWAP_SIZE" SWAP_FILE="$SWAP_FILE" 
	SAVE_FILE="$SAVE_FILE" 
	NETWORKS="$NETWORKS"
	SERVICES="$EXTRA_SERVICES"
	REDIRS="$REDIRS"
	PUBLIC_IP="$PUBLIC_IP"
	MAC_0="$MAC_0"
	EOF

	if $VDN_PATH/bin/vdn-alive $GUEST_NAME; then
		if [ -e $TMPDIR/vdn-$GUEST_NAME-$GUEST_OWNER-redirs ]; then
			echo
			echo "Redirections :"
			cat $TMPDIR/vdn-$GUEST_NAME-$GUEST_OWNER-redirs
		fi
	fi

	echo
	echo "Dernières sauvegardes : "
	[ -e $SAVE_FILE ] && du -h $SAVE_FILE || echo "Never saved"
	if [ -n "$HDB" ]; then
		[ -z "$SAVE_DIR_HDB" ] && SAVE_DIR_HDB=$SAVE_DIR || :
		[ -e $SAVE_DIR_HDB/$HDB ] && du -h $SAVE_DIR_HDB/$HDB || echo "Never saved"
	fi
	echo

else
	echo ${!VAR}
fi