#!/bin/bash

#Variables:
NET_HOME="/net/home/"
TEACHERS_HOME="teachers"
STUDENTS_HOME="students"
OTHERS_HOME="others"
MSG_NON_FOUND="File Not Found Exception"
CONFIG=""
DATA=""
TEST=""
TAR="star"

usage(){


	echo "USAGE"
	echo "lliurex-vault-homenets test    {teachers|students|others}"
	echo "lliurex-vault-homenets backup  {data|config} {teachers|students|others} DEST"
	echo "lliurex-vault-homenets restore SOURCE DEST"
	echo "lliurex-vault-homenets custom  {backup|restore} SOURCE DEST"
	echo "lliurex-vault-homenets custom  {test} SOURCE"
}


do_check_size_data(){

	# Check the size of Net directories
	if [ -d  $NET_HOME$1 ] ; then
		du -s $NET_HOME$1   | cut -d "/" -f1
	else
		echo "$MSG_NON_FOUND $1"
	fi
}

backup_data_creation(){

	# Create a Data Backup for $1
	TAR_DIRECTORY=$(mktemp -d)
	
	for DIRECTORY in $(ls $NET_HOME$1); do
		echo	"$TAR --exclude=".." --exclude="." -czvf $TAR_DIRECTORY/$1-$DIRECTORY.tgz  $NET_HOME$1/$DIRECTORY/* >/dev/null  2>/dev/null"

		$TAR --exclude=".." --exclude="." -czvf $TAR_DIRECTORY/$1-$DIRECTORY.tgz  $NET_HOME$1/$DIRECTORY/* >/dev/null  2>/dev/null
	done
	echo $TAR_DIRECTORY
	
	#rm -rf $TAR_DIRECTORY

}

backup_config_creation(){

	# Create a Data Backup for $1
	TAR_DIRECTORY=$(mktemp -d)
	
	for DIRECTORY in $(ls $NET_HOME$1); do
		$TAR --exclude=".." --exclude="." --exclude="*firefox*Cache*"  -czvf $TAR_DIRECTORY/$1-$DIRECTORY.tgz  $NET_HOME$1/$DIRECTORY/.* >/dev/null  2>/dev/null
	done
	echo $TAR_DIRECTORY
	
	#rm -rf $TAR_DIRECTORY

}

restore_backup_creation(){

	# Restore Data Backup for $1
	if [ -f "$1" -a -d "$2" ] ; then
		
		$TAR -xv $1 $2
		exit 0
	fi
	
		exit 1
	
}



#MAIN
ACTION="$1"
shift

case "$ACTION" in 

	test)
		if [ -z "$1" ] ; then
			usage
		fi
		do_check_size_data $1
		exit 0
		;;
	backup)
		if [ -z "$2" ] ; then
			usage
		fi
		if [ "$1" == "data" ] ; then
			backup_data_creation $2
		fi
		if [ "$1" == "config" ]; then
			backup_config_creation $2
		fi
		exit 0
		;;
	restore)
		if [ -z "$2"] ; then
			usage
		fi
		if [ -f "$1" ] ; then
			restore_backup_creation $1 $2
		fi
		exit 0
		;;
	custom)
		CUSTOM_ACTION=$1
		shift
		
		case "$CUSTOM_ACTION" in
				test)
					
					if [ -z "$1" ] ; then
						usage
					fi
					
					exit 0
				;;
				backup)
					usage
				;;
				restore)
					usage
				;;
				*)
				usage
				;;
		esac
		;;
	*)
		usage
		exit 1
		;;
esac