#!/bin/sh
# ==============================================================================
# HassOS data partition handling 
# ==============================================================================
set -e

OPTION_FILE=/mnt/overlay/data.opt
DATA_DEVICE_CHILD="$(findfs LABEL="hassos-data")"
DATA_DEVICE_ROOT="/dev/$(lsblk -no pkname "${DATA_DEVICE_CHILD}")"

# Move command
if [ "${1}" = "move" ] && [ -e "${2}" ]; then
    DEVICE="${2}"

    # Check device
    if ! lsblk "${DEVICE}" | grep disk > /dev/null 2>&1; then
        echo "[ERROR] Is not disk!"
        exit 1
    elif [ "${DEVICE}" = "${DATA_DEVICE_ROOT}" ]; then
        echo "[ERROR] Can't be the same disk!"
        exit 1
    fi

    # Flag device
    echo "WARNING: ${DEVICE} will be reset on next restart!"
    echo "Press a key to move forward"
    read -r

    echo "${DEVICE}" > ${OPTION_FILE}
fi