#!/usr/bin/lua

--! LibreMesh
--! Copyright (C) 2019  Gioacchino Mazzurco <gio@altermundi.net>
--!
--! This program is free software: you can redistribute it and/or modify
--! it under the terms of the GNU Affero General Public License as
--! published by the Free Software Foundation, either version 3 of the
--! License, or (at your option) any later version.
--!
--! This program is distributed in the hope that it will be useful,
--! but WITHOUT ANY WARRANTY; without even the implied warranty of
--! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--! GNU Affero General Public License for more details.
--!
--! You should have received a copy of the GNU Affero General Public License
--! along with this program.  If not, see <http://www.gnu.org/licenses/>.

local JSON = require("luci.jsonc")

local outputTable = {}
local filtredValues = {}

for key,value in pairs(JSON.parse(io.stdin:read("*all")) ) do
	if filtredValues[value.data] == nil or filtredValues[value.data].bleachTTL < value.bleachTTL then
		filtredValues[value.data] = {
			data = value.data,
			key = key,
			bleachTTL = value.bleachTTL
		}
	end
end

for _,value in pairs(filtredValues) do
	table.insert(outputTable, value.key.." "..value.data)
end

io.output("/etc/bat-hosts"):write(table.concat(outputTable,"\n").."\n")