#!/bin/bash
CONTS_LIST=$(lxc list | grep "RUNNING\|STOPPED" | awk {'print $2'})

if [ $# -eq 0 ]
then
echo "No arguments supplied, doing interactive mode"
sleep 1
let i=0
W=()
while read -r line;
do
let i=$i+1
W+=($i "$line" off)
done < <( echo "$CONTS_LIST" )
CONTS=$(dialog --checklist "Choose containers to copy" 24 80 17 "${W[@]}" 3>&2 2>&1 1>&3)
DEST_IP=$(dialog --inputbox "Enter destination IP:" 25 25  --output-fd 1)
DEST_PORT=$(dialog --inputbox "Enter destination SSH port(leave blank for default 22):" 25 25  --output-fd 1)
fi

if [[ ! -z "$1" ]]; then
if [[ ! -z "$2" ]]; then
CONTS=$(echo "$CONTS_LIST" | nl | grep "$1" | awk {'print $1'})
DEST_IP="$2"
DEST_PORT="$3"
fi
fi

[ -z "$DEST_PORT" ] && DEST_PORT=22


DEST_ZPOOL=$(echo crypt)
DEST_ZPOOL_2=$(echo storage)

DATASETS=$(zfs list)
SNAPS=$(zfs list -t snapshot)
DEST_SNAPS=$(ssh $DEST_IP -p $DEST_PORT zfs list -t snapshot); (($? != 0)) && { echo "SSH command to fill DEST_SNAPS exited with non-zero"; exit 1; }


bionic_checker=$(ssh $DEST_IP -p $DEST_PORT lsb_release -c | awk {'print $2'}); (($? != 0)) && { echo "SSH command to fill bionic_checker exited with non-zero"; exit 1; }

for CONT in $CONTS;
do
CONT_VAR=$(echo "$CONTS_LIST"| sed -n "`echo "$CONT p" | sed 's/ //'`")
SNAPS_CLEANED=$(echo "$SNAPS" | grep crypt | grep lxd | grep storage | grep containers | grep -E "....-..-.._........--.d" | awk {'print $1'} | grep "$CONT_VAR"@)
DEST_SNAPS_CLEANED=$(echo "$DEST_SNAPS" | grep crypt | grep lxd | grep storage | grep containers | grep -E "....-..-.._........--.d" | awk {'print $1'} | grep "$CONT_VAR"@)
SOURCE_DEST_IDENTICAL_SNAPS=$(grep -Fxf <(echo "$SNAPS_CLEANED") <(echo "$DEST_SNAPS_CLEANED"))
SNAP_TO_SEND_FIRST=$(echo "$SOURCE_DEST_IDENTICAL_SNAPS" | tail -n1)
DATASET_VAR=$(echo "$DATASETS" | grep crypt | grep lxd | grep storage | grep containers | awk {'print $1'} | grep -E "$CONT_VAR"$)
DATASET_RECORDSIZE_VAR=$(zfs get recordsize -H -o value "$DATASET_VAR")
DATASET_ATIME_VAR=$(zfs get atime -H -o value "$DATASET_VAR")
DATASET_RELATIME_VAR=$(zfs get relatime -H -o value "$DATASET_VAR")
DATASET_QUOTA_VAR=$(zfs get quota -H -o value "$DATASET_VAR")

SNAP_TO_SEND_FIRST_FOR_LATER_CHECK=$(echo "$SNAP_TO_SEND_FIRST")
IFS="
"

echo "Start move "$CONT_VAR""

if [ -z "$SNAP_TO_SEND_FIRST" ]
then

if [ -z "$SNAPS_CLEANED" ]
then

echo "Creating first snapshot"
for command in $(zfSnap -n -zpool28fix -a 7d "$DATASET_VAR" | grep snapshot | grep "$DATASET_VAR")
do
        SNAP_TO_SEND_FIRST=$(echo "$command" | awk '{print $3}')
        echo "Doing "$command""
        eval "$command";
done

else
SNAP_TO_SEND_FIRST=$(echo "$SNAPS_CLEANED" | tail -n 48 | head -n 1)
fi

echo "Sending first snapshot"
echo "Sending "$SNAP_TO_SEND_FIRST""
zfs send "$SNAP_TO_SEND_FIRST" | lzop | pv | ssh "$DEST_IP" -p $DEST_PORT "lzop -d | zfs recv -o recordsize="$DATASET_RECORDSIZE_VAR" -o atime="$DATASET_ATIME_VAR" -o relatime="$DATASET_RELATIME_VAR" -o quota="$DATASET_QUOTA_VAR" "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR"; (($? != 0)) && { echo "SSH command to send first snapshot exited with non-zero"; exit 1; }"


echo "Sleep 2"
sleep 2

fi

echo "Creating second snapshot"
for command in $(zfSnap -n -zpool28fix -a 7d "$DATASET_VAR" | grep snapshot | grep "$DATASET_VAR")
do
        SNAP_TO_SEND_SECOND=$(echo "$command" | awk '{print $3}')
        echo "Doing "$command""
        eval "$command";

done

echo "Sending second snapshot"
echo "Sending "$SNAP_TO_SEND_FIRST" to "$SNAP_TO_SEND_SECOND" with -I parameter"
zfs send -I "$SNAP_TO_SEND_FIRST" "$SNAP_TO_SEND_SECOND" | lzop | pv | ssh "$DEST_IP" -p $DEST_PORT "lzop -d | zfs recv -o recordsize="$DATASET_RECORDSIZE_VAR" -o atime="$DATASET_ATIME_VAR" -o relatime="$DATASET_RELATIME_VAR" -o quota="$DATASET_QUOTA_VAR" "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR" -F; (($? != 0)) && { echo "SSH command to send second snapshot exited with non-zero"; exit 1; }"

echo "Sleep 2"
sleep 2

echo "Creating third snapshot"
for command in $(zfSnap -n -zpool28fix -a 7d "$DATASET_VAR" | grep snapshot | grep "$DATASET_VAR")
do
	SNAP_TO_SEND_THIRD=$(echo "$command" | awk '{print $3}')
        echo "Doing "$command""
        eval "$command";
done

echo "Sending third snapshot"
echo "Sending "$SNAP_TO_SEND_SECOND" to "$SNAP_TO_SEND_THIRD""
zfs send -i "$SNAP_TO_SEND_SECOND" "$SNAP_TO_SEND_THIRD" | lzop | pv | ssh "$DEST_IP" -p $DEST_PORT "lzop -d | zfs recv -o recordsize="$DATASET_RECORDSIZE_VAR" -o atime="$DATASET_ATIME_VAR" -o relatime="$DATASET_RELATIME_VAR" -o quota="$DATASET_QUOTA_VAR" "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR" -F; (($? != 0)) && { echo "SSH command to send third snapshot exited with non-zero"; exit 1; }"

echo "Sleep 2"
sleep 2

echo "Creating fourth snapshot"
for command in $(zfSnap -n -zpool28fix -a 7d "$DATASET_VAR" | grep snapshot | grep "$DATASET_VAR")
do
        SNAP_TO_SEND_FOURTH=$(echo "$command" | awk '{print $3}')
        echo "Doing "$command""
        eval "$command";
done

echo "Sending fourth snapshot"
echo "Sending "$SNAP_TO_SEND_THIRD" to "$SNAP_TO_SEND_FOURTH""
zfs send -i "$SNAP_TO_SEND_THIRD" "$SNAP_TO_SEND_FOURTH" | lzop | pv | ssh "$DEST_IP" -p $DEST_PORT "lzop -d | zfs recv -o recordsize="$DATASET_RECORDSIZE_VAR" -o atime="$DATASET_ATIME_VAR" -o relatime="$DATASET_RELATIME_VAR" -o quota="$DATASET_QUOTA_VAR" "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR" -F; (($? != 0)) && { echo "SSH command to send fourth snapshot exited with non-zero"; exit 1; }"

echo "Sleep 2"
sleep 2

echo "Stopping "$CONT_VAR" on source"
lxc stop "$CONT_VAR" --timeout 30; (($? != 0)) && echo "lxc stop timed-out after 30 seconds, doing with force parameter" && lxc stop "$CONT_VAR" --force

echo "Sleep 2"
sleep 2

echo "Creating fifth snapshot"
for command in $(zfSnap -n -zpool28fix -a 7d "$DATASET_VAR" | grep snapshot | grep "$DATASET_VAR")
do
        SNAP_TO_SEND_FIFTH=$(echo "$command" | awk '{print $3}')
        echo "Doing "$command""
        eval "$command";
done

echo "Sending fifth snapshot"
echo "Sending "$SNAP_TO_SEND_FOURTH" to "$SNAP_TO_SEND_FIFTH""
zfs send -i "$SNAP_TO_SEND_FOURTH" "$SNAP_TO_SEND_FIFTH" | lzop | pv | ssh "$DEST_IP" -p $DEST_PORT "lzop -d | zfs recv -o recordsize="$DATASET_RECORDSIZE_VAR" -o atime="$DATASET_ATIME_VAR" -o relatime="$DATASET_RELATIME_VAR" -o quota="$DATASET_QUOTA_VAR" "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR" -F; (($? != 0)) && { echo "SSH command to send fifth snapshot exited with non-zero"; exit 1; }"

if [ $bionic_checker == bionic ]
then

if [ -z "$SNAP_TO_SEND_FIRST_FOR_LATER_CHECK" ]
then

echo "Setting up mountpoint on destination for "$CONT_VAR""
ssh "$DEST_IP" -p $DEST_PORT zfs set mountpoint=/var/lib/lxd/storage-pools/"$DEST_ZPOOL_2"/containers/"$CONT_VAR" "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR"; (($? != 0)) && { echo "SSH command to setup mountpoint on destination exited with non-zero"; exit 1; }

echo "Fixing config for bionic"
ssh "$DEST_IP" -p $DEST_PORT sed -i '/volatile.idmap.current/d' /var/lib/lxd/storage-pools/"$DEST_ZPOOL_2"/containers/"$CONT_VAR"/backup.yaml; (($? != 0)) && { echo "SSH command to setup volatile.idmap exited with non-zero"; exit 1; }
ssh "$DEST_IP" -p $DEST_PORT sed -i '/volatile.uuid/d' /var/lib/lxd/storage-pools/"$DEST_ZPOOL_2"/containers/"$CONT_VAR"/backup.yaml; (($? != 0)) && { echo "SSH command to setup volatile.uuid exited with non-zero"; exit 1; }


echo "Importing "$CONT_VAR" on destination"
ssh "$DEST_IP" -p $DEST_PORT lxd import "$CONT_VAR" --force; (($? != 0)) && { echo "SSH command to import container exited with non-zero"; exit 1; }

fi

echo "Starting "$CONT_VAR" on destination"
ssh "$DEST_IP" -p $DEST_PORT lxc start "$CONT_VAR"; (($? != 0)) && { echo "SSH command to start container exited with non-zero"; exit 1; }

echo " "

else

if [ -z "$SNAP_TO_SEND_FIRST_FOR_LATER_CHECK" ]
then
echo "Setting up mountpoint on destination for "$CONT_VAR""
ssh "$DEST_IP" -p $DEST_PORT zfs set canmount=noauto "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR"; (($? != 0)) && { echo "SSH command to setup mountpoint on destination exited with non-zero"; exit 1; }
ssh "$DEST_IP" -p $DEST_PORT zfs set mountpoint=/var/snap/lxd/common/lxd/storage-pools/"$DEST_ZPOOL_2"/containers/"$CONT_VAR" "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR"; (($? != 0)) && { echo "SSH command to setup mountpoint on destination exited with non-zero"; exit 1; }
ssh "$DEST_IP" -p $DEST_PORT zfs mount "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR"; (($? != 0)) && { echo "SSH command to setup mountpoint on destination exited with non-zero"; exit 1; }
REMOTE_LXD_PID=$(ssh "$DEST_IP" -p $DEST_PORT cat /var/snap/lxd/common/lxd.pid); (($? != 0)) && { echo "SSH command to get REMOTE_LXD_PID on destination exited with non-zero"; exit 1; }
ssh "$DEST_IP" -p $DEST_PORT "nsenter -t $REMOTE_LXD_PID -m bash -c \"mount -t zfs "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR" /var/snap/lxd/common/lxd/storage-pools/"$DEST_ZPOOL_2"/containers/"$CONT_VAR"\""; (($? != 0)) && { echo "SSH command to set REMOTE_LXD_PID on destination exited with non-zero"; exit 1; }

echo "Importing "$CONT_VAR" on destination"
ssh "$DEST_IP" -p $DEST_PORT /snap/bin/lxd import "$CONT_VAR" --force; (($? != 0)) && { echo "SSH command to import container exited with non-zero"; exit 1; }
ssh "$DEST_IP" -p $DEST_PORT zfs umount "$DEST_ZPOOL"/lxd/storage/containers/"$CONT_VAR"; (($? != 0)) && { echo "SSH command to import container exited with non-zero"; exit 1; }
fi

echo "Starting "$CONT_VAR" on destination"
ssh "$DEST_IP" -p $DEST_PORT /snap/bin/lxc start "$CONT_VAR"; (($? != 0)) && { echo "SSH command to start container exited with non-zero"; exit 1; }

echo " "

fi

done