#!/usr/bin/lua

local uci = require('simple-uci').cursor()
local fs = require 'nixio.fs'

local enabled
if uci:get('autoupdater-wifi-fallback', 'settings') then
  enabled = uci:get_bool('autoupdater-wifi-fallback', 'settings', 'enabled')
  uci:delete('autoupdater-wifi-fallback', 'settings')
else
  enabled = uci:get_bool('autoupdater', 'settings', 'enabled')
end

uci:section('autoupdater-wifi-fallback', 'autoupdater-wifi-fallback', 'settings',{
  enabled = enabled,
})

uci:delete('wireless', 'fallback')
uci:delete('network', 'fallback')
uci:delete('network', 'fallback6')

uci:section('network', 'interface', 'fallback',{
  proto = 'dhcp',
  peerdns = true,
  sourcefilter = false,
})
uci:section('network', 'interface', 'fallback6',{
  ifname = '@fallback',
  proto = 'dhcpv6',
  peerdns = true,
  sourcefilter = false,
})

uci:save('autoupdater-wifi-fallback')
uci:save('network')
uci:save('wireless')

local minute = tonumber(fs.readfile('/usr/lib/micron.d/autoupdater'):match('^([0-9][0-9]?)%s'))
minute = (minute + 10) % 60

local f = io.open('/usr/lib/micron.d/autoupdater-wifi-fallback', 'w')
f:write(string.format('%i * * * * /usr/sbin/autoupdater-wifi-fallback\n', minute))
f:close()