--[[
LuCI - Lua Configuration Interface

Copyright 2011 Jo-Philipp Wich <xm@subsignal.org>

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

$Id$
]]--

module("luci.tools.status", package.seeall)

local uci = require "luci.model.uci".cursor()

function dhcp_leases()
	local rv = { }
	local nfs = require "nixio.fs"
	local leasefile = "/var/dhcp.leases"

	uci:foreach("dhcp", "dnsmasq",
		function(s)
			if s.leasefile and nfs.access(s.leasefile) then
				leasefile = s.leasefile
				return false
			end
		end)

	local fd = io.open(leasefile, "r")
	if fd then
		while true do
			local ln = fd:read("*l")
			if not ln then
				break
			else
				local ts, mac, ip, name = ln:match("^(%d+) (%S+) (%S+) (%S+)")
				if ts and mac and ip and name then
					rv[#rv+1] = {
						expires  = os.difftime(tonumber(ts) or 0, os.time()),
						macaddr  = mac,
						ipaddr   = ip,
						hostname = (name ~= "*") and name
					}
				end
			end
		end
		fd:close()
	end

	return rv
end

function wifi_networks()
	local rv = { }
	local ntm = require "luci.model.network".init()

	local dev
	for _, dev in ipairs(ntm:get_wifidevs()) do
		local rd = {
			up       = dev:is_up(),
			device   = dev:name(),
			name     = dev:get_i18n(),
			networks = { }
		}

		local net
		for _, net in ipairs(dev:get_wifinets()) do
			rd.networks[#rd.networks+1] = {
				name       = net:shortname(),
				link       = net:adminlink(),
				up         = net:is_up(),
				mode       = net:active_mode(),
				ssid       = net:active_ssid(),
				bssid      = net:active_bssid(),
				encryption = net:active_encryption(),
				frequency  = net:frequency(),
				channel    = net:channel(),
				signal     = net:signal(),
				quality    = net:signal_percent(),
				noise      = net:noise(),
				bitrate    = net:bitrate(),
				ifname     = net:ifname(),
				assoclist  = net:assoclist(),
				country    = net:country(),
				txpower    = net:txpower(),
				txpoweroff = net:txpower_offset()
			}
		end

		rv[#rv+1] = rd
	end

	return rv
end

function wifi_network(id)
	local ntm = require "luci.model.network".init()
	local net = ntm:get_wifinet(id)
	if net then
		local dev = net:get_device()
		if dev then
			return {
				id         = id,
				name       = net:shortname(),
				link       = net:adminlink(),
				up         = net:is_up(),
				mode       = net:active_mode(),
				ssid       = net:active_ssid(),
				bssid      = net:active_bssid(),
				encryption = net:active_encryption(),
				frequency  = net:frequency(),
				channel    = net:channel(),
				signal     = net:signal(),
				quality    = net:signal_percent(),
				noise      = net:noise(),
				bitrate    = net:bitrate(),
				ifname     = net:ifname(),
				assoclist  = net:assoclist(),
				country    = net:country(),
				txpower    = net:txpower(),
				txpoweroff = net:txpower_offset(),
				device     = {
					up     = dev:is_up(),
					device = dev:name(),
					name   = dev:get_i18n()
				}
			}
		end
	end
	return { }
end