#!/bin/sh
#
# Remove old incremtal inc of all jails
# Usage: rm
#

LIBDIR="$(dirname $0)" && . "${LIBDIR}/config"

for jail in $("${LIBDIR}/bkctld-list"); do
    incs=$(ls "${INCDIR}/${jail}")
    if [ -f "${CONFDIR}/${jail}" ]; then
        keepfile="$(mktemp)"
        while read j; do
            date=$( echo "${j}" | cut -d. -f1 )
            before=$( echo "${j}" | cut -d. -f2 )
            date -d "$(date "${date}") ${before}" "+%Y-%m-%d"
        done < "${CONFDIR}/${jail}" > "${keepfile}"
        for j in $(echo "${incs}" | grep -v -f "${keepfile}"); do
            start=$(date +"%H:%M:%S")
            inc_inode=$(stat --format=%i "${INCDIR}/${jail}/${j}")
            if [ "${inc_inode}" -eq 256 ]; then
                /bin/btrfs subvolume delete "${INCDIR}/${jail}/${j}" | debug
                end=$(date +"%H:%M:%S")
                notice "${jail} : deleted ${j} inc [${start}/${end}]"
            else
                lock="/run/lock/bkctld/rm-${jail}.lock"
                if [ -f "${lock}" ]; then
                    warning "${jail} : trying to run already running rm"
                else
                    (
                        empty="/tmp/bkctld-${$}-$(date +%N)"
                        mkdir -p /run/lock/bkctld && touch "${lock}" && mkdir -p "${empty}"
                        trap "rm -f ${lock} && rmdir ${empty}" 0
                        rsync -a --delete "${empty}/" "${INCDIR}/${jail}/${j}/"
                        rmdir "${INCDIR}/${jail}/${j}/"
                        end=$(date +"%H:%M:%S")
                        notice "${jail} : deleted ${j} inc [${start}/${end}]"
                    )
                fi
            fi
        done
        rm "${keepfile}"
    fi
done