--[[
LuCI - Lua Configuration Interface

Copyright 2008 Steven Barth <steven@midlink.org>
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

$Id$
]]--

require("luci.sys")
require("luci.sys.zoneinfo")
require("luci.tools.webadmin")
require("luci.fs")
require("luci.config")

local m, s, o
local has_ntpd = luci.fs.access("/usr/sbin/ntpd")

m = Map("system", translate("System"), translate("Here you can configure the basic aspects of your device like its hostname or the timezone."))
m:chain("luci")


s = m:section(TypedSection, "system", translate("System Properties"))
s.anonymous = true
s.addremove = false

s:tab("general",  translate("General Settings"))
s:tab("logging",  translate("Logging"))
s:tab("language", translate("Language and Style"))


--
-- System Properties
--

o = s:taboption("general", DummyValue, "_systime", translate("Local Time"))
o.template = "admin_system/clock_status"


o = s:taboption("general", Value, "hostname", translate("Hostname"))
o.datatype = "hostname"

function o.write(self, section, value)
	Value.write(self, section, value)
	luci.sys.hostname(value)
end


o = s:taboption("general", ListValue, "zonename", translate("Timezone"))
o:value("UTC")

for i, zone in ipairs(luci.sys.zoneinfo.TZ) do
	o:value(zone[1])
end

function o.write(self, section, value)
	local function lookup_zone(title)
		for _, zone in ipairs(luci.sys.zoneinfo.TZ) do
			if zone[1] == title then return zone[2] end
		end
	end

	AbstractValue.write(self, section, value)
	local timezone = lookup_zone(value) or "GMT0"
	self.map.uci:set("system", section, "timezone", timezone)
	luci.fs.writefile("/etc/TZ", timezone .. "\n")
end


--
-- Logging
--

o = s:taboption("logging", Value, "log_size", translate("System log buffer size"), "kiB")
o.optional    = true
o.placeholder = 16
o.datatype    = "uinteger"

o = s:taboption("logging", Value, "log_ip", translate("External system log server"))
o.optional    = true
o.placeholder = "0.0.0.0"
o.datatype    = "ip4addr"

o = s:taboption("logging", Value, "log_port", translate("External system log server port"))
o.optional    = true
o.placeholder = 514
o.datatype    = "port"

o = s:taboption("logging", ListValue, "conloglevel", translate("Log output level"))
o:value(8, translate("Debug"))
o:value(7, translate("Info"))
o:value(6, translate("Notice"))
o:value(5, translate("Warning"))
o:value(4, translate("Error"))
o:value(3, translate("Critical"))
o:value(2, translate("Alert"))
o:value(1, translate("Emergency"))

o = s:taboption("logging", ListValue, "cronloglevel", translate("Cron Log Level"))
o.default = 8
o:value(5, translate("Debug"))
o:value(8, translate("Normal"))
o:value(9, translate("Warning"))


--
-- Langauge & Style
--

o = s:taboption("language", ListValue, "_lang", translate("Language"))
o:value("auto")

local i18ndir = luci.i18n.i18ndir .. "base."
for k, v in luci.util.kspairs(luci.config.languages) do
	local file = i18ndir .. k:gsub("_", "-")
	if k:sub(1, 1) ~= "." and luci.fs.access(file .. ".lmo") then
		o:value(k, v)
	end
end

function o.cfgvalue(...)
	return m.uci:get("luci", "main", "lang")
end

function o.write(self, section, value)
	m.uci:set("luci", "main", "lang", value)
end


o = s:taboption("language", ListValue, "_mediaurlbase", translate("Design"))
for k, v in pairs(luci.config.themes) do
	if k:sub(1, 1) ~= "." then
		o:value(v, k)
	end
end

function o.cfgvalue(...)
	return m.uci:get("luci", "main", "mediaurlbase")
end

function o.write(self, section, value)
	m.uci:set("luci", "main", "mediaurlbase", value)
end


--
-- NTP
--

if has_ntpd then
	s = m:section(TypedSection, "timeserver", translate("Time Synchronization"))
	s.anonymous = true
	s.addremove = false

	function m.on_parse()
		local has_section = false

		m.uci:foreach("system", "timeserver",
			function(s)
				has_section = true
				return false
		end)

		if not has_section then
			m.uci:section("system", "timeserver", "ntp")
		end
	end

	o = s:option(Flag, "enable", translate("Enable builtin NTP server"))
	o.rmempty = false

	function o.cfgvalue(self)
		return luci.sys.init.enabled("sysntpd")
			and self.enabled or self.disabled
	end

	function o.write(self, section, value)
		if value == self.enabled then
			luci.sys.init.enable("sysntpd")
			luci.sys.call("env -i /etc/init.d/sysntpd start >/dev/null")
		else
			luci.sys.call("env -i /etc/init.d/sysntpd stop >/dev/null")
			luci.sys.init.disable("sysntpd")
		end
	end


	o = s:option(DynamicList, "server", translate("NTP server candidates"))
	o.datatype = "host"
	o:depends("enable", "1")

	-- retain server list even if disabled
	function o.remove() end
end


return m