#!/usr/bin/lua

--! LibreMesh
--! Copyright (C) 2019  Gioacchino Mazzurco <gio@altermundi.net>
--! SPDX-License-Identifier: AGPL-3.0-only

local fs = require("nixio.fs")
local JSON = require("luci.jsonc")

local ifacesPath = "/sys/class/net/"
local hostname = io.input("/proc/sys/kernel/hostname"):read("*line")

local batHostTable = {}

local ignoredIf = { lo=true, anygw=true }

for ifname in fs.dir(ifacesPath) do
	if not ignoredIf[ifname] then
		local macaddr = io.input(ifacesPath..ifname.."/address"):read("*line")
		if type(macaddr) == "string" and macaddr:len() == 17 then
			batHostTable[macaddr] = string.gsub(hostname.."_"..ifname, "%W", "_")
		end
	end
end

io.popen("shared-state-async insert bat-hosts", "w"):write(JSON.stringify(batHostTable))