#!/usr/bin/lua

local sysconfig = require 'gluon.sysconfig'


if sysconfig.primary_mac then
  os.exit(0)
end


local platform = require 'gluon.platform'

local fs = require 'luci.fs'
local util = require 'luci.util'


local try_files = {
  '/sys/class/ieee80211/phy0/macaddress',
  '/sys/class/net/eth0/address',
}

if platform.match('ar71xx', 'generic', {'tl-wdr3600', 'tl-wdr4300'}) then
  table.insert(try_files, 1, '/sys/class/ieee80211/phy1/macaddress')
end

if platform.match('ar71xx', 'generic', {'unifi-outdoor-plus'}) then
  table.insert(try_files, 1, '/sys/class/net/eth0/address')
end

if platform.match('ar71xx', 'generic', {'archer-c5', 'archer-c7'}) then
  table.insert(try_files, 1, '/sys/class/net/eth1/address')
end


for _, file in ipairs(try_files) do
  local addr = fs.readfile(file)

  if addr then
    sysconfig.primary_mac = util.trim(addr)
    break
  end
end