environment/bin/get

ARCHIVE=false
DESTINATION_LOCAL_DIR="./"

if [[ "$1" == "--archive" ]]; then
    ARCHIVE=true
    shift
fi

if [[ $# -lt 2 ]]; then
    echo "Usage: $0 [--archive] user@host remote_source_dir [local_destination_dir]"
    exit 1
fi

USER_HOST="$1"
REMOTE_USER="${USER_HOST%@*}"
HOST="${USER_HOST#*@}"

REMOTE_SOURCE_DIR="$2"
if [[ -n "$3" ]]; then
    DESTINATION_LOCAL_DIR="$3"
fi

if [[ "$REMOTE_SOURCE_DIR" = /* ]]; then
    IS_ABSOLUTE=true
else
    IS_ABSOLUTE=false
fi


echo "ARCHIVE=$ARCHIVE"
echo "REMOTE_USER=$REMOTE_USER"
echo "HOST=$HOST"
echo "REMOTE_SOURCE_DIR=$REMOTE_SOURCE_DIR"
echo "DESTINATION_LOCAL_DIR=$DESTINATION_LOCAL_DIR"

REMOTE_BASE_DIR=""

if $IS_ABSOLUTE; then
    REMOTE_BASE_DIR="/"
else
    REMOTE_BASE_DIR=/home/$REMOTE_USER
fi


# Example that works
# ssh debian@gurgul.org "tar --zstd -cf - -C /home/debian .dat" | tar --zstd -xf - -C .
# get debian@gurgul.org .dat

# get --archive debian@gurgul.org /etc

TAR_COMMAND="tar --zstd -cf - -C $REMOTE_BASE_DIR $REMOTE_SOURCE_DIR"

if $ARCHIVE; then 
    ssh $REMOTE_USER@$HOST $TAR_COMMAND > "$DESTINATION_LOCAL_DIR/$(basename "$REMOTE_SOURCE_DIR")-$(date +"%d-%m-%Y").tar.zst"
else
    ssh $REMOTE_USER@$HOST $TAR_COMMAND | tar --zstd -xf - -C $DESTINATION_LOCAL_DIR
fi