#!/bin/sh

BOOT_CONFIG="/mnt/boot/CONFIG"
USB_CONFIG="/mnt/config"
CONFIG_DIR=""
USE_USB=0

# Check and mount usb CONFIG to folder
if findfs LABEL="CONFIG" > /dev/null 2>&1; then
    echo "[Info] Use USB stick for import CONFIG"

    systemctl start mnt-config.mount
    if ! systemctl -q is-active mnt-config.mount; then
        echo "[Error] Can't mount config partition"
        exit 1
    fi

    USE_USB=1
    CONFIG_DIR=${USB_CONFIG}
fi

# Use boot CONFIG folder
if [ ${USE_USB} = 0 ] && [ -d ${BOOT_CONFIG} ]; then
    echo "[Info] Use boot partition for import CONFIG"
    CONFIG_DIR=${BOOT_CONFIG}
elif [ ${USE_USB} = 0 ]; then
    echo "[Warning] No config partition found"
    exit 0
fi


##
# NetworkManager
if [ -d "${CONFIG_DIR}/network" ]; then
    echo "[Info] Update NetworkManager connections!"

    rm -rf /etc/NetworkManager/system-connections/*
    cp -f ${CONFIG_DIR}/network/* /etc/NetworkManager/system-connections/
    chmod 600 /etc/NetworkManager/system-connections/*

    nmcli con reload > /dev/null 2>&1
fi

##
# Modules
if [ -d "${CONFIG_DIR}/modules" ]; then
    echo "[Info] Update Modules configuration!"

    rm -rf /etc/modules-load.d/*
    cp -f ${CONFIG_DIR}/modules/* /etc/modules-load.d/
fi

##
# Udev
if [ -d "${CONFIG_DIR}/udev" ]; then
    echo "[Info] Update Udev configuration!"

    rm -rf /etc/udev/rules.d/*
    cp -f ${CONFIG_DIR}/udev/* /etc/udev/rules.d/
fi

##
# SSH know hosts
if [ -f "${CONFIG_DIR}/authorized_keys" ]; then
    echo "[Info] Update SSH authorized_keys!"

    cp -f ${CONFIG_DIR}/authorized_keys /root/.ssh/authorized_keys
    chmod 600 /root/.ssh/authorized_keys

    systemctl start dropbear > /dev/null 2>&1
else
    echo "[Info] Stop SSH debug access"

    rm -f /root/.ssh/authorized_keys
    systemctl stop dropbear > /dev/null 2>&1
fi

##
# timesyncd
if [ -f "${CONFIG_DIR}/timesyncd.conf" ]; then
    echo "[Info] Update timesyncd config"

    cat "${CONFIG_DIR}/timesyncd.conf" > /etc/systemd/timesyncd.conf
    systemctl restart systemd-timesyncd.service > /dev/null 2>&1
fi

##
# Firmware update / Only USB
UPTIME=$(awk '{printf "%0.f", $1}' /proc/uptime)
if ls ${USB_CONFIG}/*.raucb > /dev/null 2>&1 && [ "${UPTIME}" -ge "180" ]; then
    echo "[Info] Performe a firmware update"

    # shellcheck disable=SC2012
    rauc_filename=$(ls ${USB_CONFIG}/*.raucb | head -n 1)
    if rauc install "${rauc_filename}"; then
        echo "[Info] Firmware update success"
        systemctl reboot
    else
        echo "[Error] Firmware update fails"
    fi
fi

# Cleanup config partition
if [ ${USE_USB} = 1 ]; then
    systemctl stop mnt-config.mount
else
    rm -rf ${BOOT_CONFIG}
fi