#!/bin/sh

# SPDX-License-Identifier: CC0-1.0
# 2022 Aleksander Morgado <aleksander@aleksander.es>
#
# Automatically report to netifd that the underlying modem
# is really disconnected
#
# require program name and at least 4 arguments
[ $# -lt 4 ] && exit 1

MODEM_PATH="$1"
BEARER_PATH="$2"
INTERFACE="$3"
STATE="$4"

[ "${STATE}" = "disconnected" ] || exit 0

. /lib/netifd/netifd-proto.sh
. /usr/share/ModemManager/modemmanager.common

MODEM_STATUS=$(mmcli --modem="${MODEM_PATH}" --output-keyvalue)
[ -n "${MODEM_STATUS}" ] || exit 1

MODEM_DEVICE=$(modemmanager_get_field "${MODEM_STATUS}" "modem.generic.device")
[ -n "${MODEM_DEVICE}" ] || exit 2

CFG=$(mm_get_modem_config "${MODEM_DEVICE}")
[ -n "${CFG}" ] || exit 3

IFUP=$(ifstatus "${CFG}" | jsonfilter -e "@.up")

[ "${IFUP}" = "true" ] && {
	mm_log "info" "Reconnecting '${CFG}' on '${STATE}' event"
	ubus call network.interface down "{ 'interface': '${CFG}'}"
	ubus call network.interface up "{ 'interface': '${CFG}'}"
}

exit 0