#!/bin/bash

dossier_local="/data/clone-ftp"

server="ftp.server"							#server name
source_distant=""							#remote directory to backup (let empty for all the ftp root)
credential_file="/data/clone-ftp.secret"	#format user:password
logfile="/var/log/clone-ftp.log"			#logfile
foldersExcluded="backup_ftp
public_html/private/backups
public_html/monlinux.net/files"				#exclude directory or files
quick="no"									#value "on"/"yes" or "off" to only check only new files, not modified (quicker)

#test if local directory exist
if [ ! -d "$dossier_local" ] ; then
	echo "Error : directory $dossier_local don't exist!" >&2
	exit 1
fi

#test if credential file exist
if [ ! -e "$credential_file" ] ; then
	echo "Error : FTP credential file $credential_file don't exist!" >&2
	exit 1
fi

#get args to check about quick mode
if [ $# == 1 ] ; then
	if [ "$1" == "--quick" ] ; then quick="yes"
	  else echo "bad args, use --quick for only check new files" >&2 && exit 1
	fi
fi

credential=$(cat $credential_file)

#get excluded
if [ "$foldersExcluded" != "" ] ; then
	while read exclude ; do
		formatFoldersExcluded="$formatFoldersExcluded --exclude '$exclude'"
	done < <(echo "$foldersExcluded")
fi

#get quick mode : only add new files, don't compare files modified
if [ "$quick" == "yes" ] || [ "$quick" == "on" ] ; then quickValue='--only-missing' ; fi

#lftp -c mirror --continue --delete $quickValue --log="$logfile" "$formatFoldersExcluded" ftp://$credential@$server/$source_distant $dossier_local
lftp -u $credential $server <<EOF
  mirror --continue --delete $quickValue --log=$logfile $formatFoldersExcluded /$source_distant $dossier_local
EOF

exit $?