#!/bin/sh

lockfile="/tmp/duplicacy.lock"
FOLDERS_TO_BACKUP=("<folder to backup>" "<2nd folder to backup>")
HOST=$(hostname -s)
LOGFILE="/var/log/duplicacy/duplicacy_$(/bin/date +%Y%m%d-%H%M%S).log"

if [ -e ${lockfile} ] && kill -0 `cat ${lockfile}`; then
        echo "duplicacy backup already running" >> ${LOGFILE}
        exit
fi

# make sure the lockfile is removed when we exit and then claim it
trap "rm -f ${lockfile}; exit" INT TERM EXIT
echo $$ > ${lockfile}

# run the backup
for folder in ${FOLDERS_TO_BACKUP[@]}; do
	# removes the slashes and replaces with a dash
	id=${HOST}${folder////-}
	cd ${folder}
    if [ -d "${folder}/.duplicacy" ]; then
    	duplicacy -verbose -log backup -stats >> ${LOGFILE} 2>&1
    else
    	# sftp password	DUPLICACY_SSH_PASSWORD	DUPLICACY_<STORAGENAME>_SSH_PASSWORD	ssh_password
    	echo "Please enter duplicacy ssh password"
    	read -S SSH_PASSWORD
        export DUPLICACY_SSH_PASSWORD=${SSH_PASSWORD}
    	duplicacy init ${id} sftp://duplicacy@gauntnas.home.johnhgaunt.com//mnt/data-pool/duplicacy/data
        duplicacy set -key ssh_password -value "${SSH_PASSWORD}"
        SSH_PASSWORD=''
    fi
done

# compress the logs
pigz $(dirname ${LOGFILE})/*.log

# clean up lockfile
rm -f ${lockfile}