#!/bin/sh

UCI_GET="uci -q get"
UCI_SET="uci -q set"
UCI_ADD="uci -q add"
UCI_DELETE="uci -q delete"
UCI_COMMIT="uci -q commit"
UCI_SHOW="uci -q show"

UCI_GET_BBF_DMMAP="uci -q -c /etc/bbfdm/dmmap get"
UCI_SET_BBF_DMMAP="uci -q -c /etc/bbfdm/dmmap set"
UCI_ADD_BBF_DMMAP="uci -q -c /etc/bbfdm/dmmap add"
UCI_DELETE_BBF_DMMAP="uci -q -c /etc/bbfdm/dmmap delete"
UCI_RENAME_BBF_DMMAP="uci -q -c /etc/bbfdm/dmmap rename"
UCI_COMMIT_BBF_DMMAP="uci -q -c /etc/bbfdm/dmmap commit"
UCI_SHOW_BBF_DMMAP="uci -q -c /etc/bbfdm/dmmap show"

uci_get() {
	val=$($UCI_GET "${1}")
	echo "${val:-$2}"
}

uci_get_bbf_dmmap() {
	val=$($UCI_GET_BBF_DMMAP "${1}")
	echo "${val:-$2}"
}

get_ip_addr_used() {
	protocol=$1
	interface=$2

	if [ "$protocol" = "IPv6" ]; then
		if [ -n "$interface" ]; then
			ip_addr_used=$(ifstatus "$interface" | jsonfilter -e '@["ipv6-address"][0].address')
		else
			ip_addr_used=$(ip -6 route | grep default | awk -F ' ' '{print $3}' | head -n 1)
		fi
	else
		if [ -n "$interface" ]; then
			ip_addr_used=$(ifstatus "$interface" | jsonfilter -e '@["ipv4-address"][0].address')
		else
			ip_addr_used=$(ip route | grep default | awk -F ' ' '{print $9}')
		fi
	fi
	
	echo "${ip_addr_used}"
}