#!/bin/sh -x

# HOWTO restic
# 1. init repository
# restic -r sftp:user@host:/srv/restic-repo init
# 2. backup
# restic -r /srv/restic-repo --verbose backup ~/work
# 3. restore
# restic -r /srv/restic-repo restore 79766175 --target /tmp/restore-work
# list snapshots
# restic -r /srv/restic-repo snapshots
# filter by path
# restic -r /srv/restic-repo snapshots --path="/srv"
# integry check
# restic -r /srv/restic-repo check

SNAPNAME="RemoteBackup-$(date +"%Y-%d-%d")-$(pwgen -A 3)"

zfs list | cut -w -f1,5 | grep -v NAME | \
while read VOLUME
do
	NAME=$(printf "$VOLUME" | cut -w -f1)
	MOUNTPOINT=$(printf "$VOLUME" | cut -w -f2)
	
	if [ "$MOUNTPOINT" == "none" ]; then
		printf "%s\n" "Volume $NAME not mounted. Not backing up."
	else
		printf "%s\n" "Creating Snapshot: $NAME@$SNAPNAME"
		zfs snap "$NAME@$SNAPNAME"
		
		printf "%s\n" "Transferring Snapshot: $NAME@$SNAPNAME"
		echo "I DO BACKUP THIS: ${MOUNTPOINT}.zfs/snapshot/$SNAPNAME/"
		# restic -r sftp:user@host:/backupspace backup "${MOUNTPOINT}.zfs/snapshot/$SNAPNAME"
		
		printf "%s\n" "Deleting Snapshot: $NAME@$SNAPNAME"
		zfs destroy "$NAME@$SNAPNAME"
	fi
done