#!/usr/bin/env bash

ENABLED=yes
[[ ${ENABLED} == "yes" ]] || exit 0
DEBUGMODE=no

unset ROOTFS; [[ -d /usr/lib/ublinux ]] || ROOTFS=.
SOURCE=${ROOTFS}/usr/lib/ublinux/functions; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null || exit 0
SOURCE=${ROOTFS}/usr/lib/ublinux/default; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null || exit 0
debug_mode "$0" "$@"

SYSCONF="${ROOTFS}${SYSCONF}"
SOURCE=${SYSCONF}/config; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null
SOURCE=${SYSCONF}/save; [ -f ${SOURCE} ] && . ${SOURCE} 2>/dev/null

PATH_CHANGES="/memory/changes"
NAME_ROOTCOPY="rootcopy"

exec_save_rootcopy(){
## При перезагрузке/выключении, сохранить/перезаписать указанные каталоги/файлы <SAVE_ROOTCOPY_INCLUDE>, кроме <SAVE_ROOTCOPY_EXCLUDE> в /ublinux-data/rootcopy/
    if [[ -n ${SAVE_ROOTCOPY_INCLUDE} || -n ${SAVE_ROOTCOPY_CHANGES} ]]; then
	PATH_ROOTCOPY=$(find ${ROOTFS}/memory/layer-base/*/ -maxdepth 1 -type d -name "${NAME_ROOTCOPY}" | head -1)
	[[ -n ${PATH_ROOTCOPY} ]] || PATH_ROOTCOPY="$(find ${ROOTFS}/memory/layer-base/*/ -maxdepth 1 -type f -name "ublinux-data*.sgn" | head -1)"
	[[ -n ${PATH_ROOTCOPY} ]] && PATH_ROOTCOPY="${PATH_ROOTCOPY%/*}/${NAME_ROOTCOPY}" || exit 0

	[[ -e ${PATH_ROOTCOPY} ]] || install -dm0755 -o root -g root "${PATH_ROOTCOPY}"
	if [[ -w ${PATH_ROOTCOPY} ]]; then
	    if [[ -n ${SAVE_ROOTCOPY_EXCLUDE} ]]; then
		while read -r SELECT_EXCLUDE; do
		    ROOTCOPY_EXCLUDE+=",'${SELECT_EXCLUDE}'"
		done <<< ${SAVE_ROOTCOPY_EXCLUDE//,/$'\n'}
	    fi
    	    cd ${ROOTFS}/${PATH_CHANGES}
	    [[ -n ${SAVE_ROOTCOPY_CHANGES} ]] && while read -r SELECT_CHANGES; do
		[[ -e ${SELECT_CHANGES#/*} ]] \
		&& eval rsync --quiet --update --archive --recursive --acls --xattrs --relative --delete --delete-excluded --exclude={''${ROOTCOPY_EXCLUDE}} ${SELECT_CHANGES#/*} ${PATH_ROOTCOPY}
		# --dry-run --verbose --quiet 
    	    done <<< ${SAVE_ROOTCOPY_CHANGES//,/$'\n'}
	    [[ -n ${SAVE_ROOTCOPY_INCLUDE} ]] && while read -r SELECT_INCLUDE; do
		[[ -e ${ROOTFS}/${SELECT_INCLUDE} ]] \
		&& eval rsync --quiet --update --archive --recursive --acls --xattrs --relative --delete --delete-excluded --exclude={''${ROOTCOPY_EXCLUDE}} ${ROOTFS}/${SELECT_INCLUDE} ${PATH_ROOTCOPY}
		# --dry-run --verbose --quiet 
    	    done <<< ${SAVE_ROOTCOPY_INCLUDE//,/$'\n'}
	fi

    fi
}

################
##### MAIN #####
################

    [[ ${SYSTEMBOOT_STATEMODE} == "changes" ]] && exit 0
    exec_save_rootcopy $@