#!/opt/lnxall_app/bin/lua

local invoker = require "invoker"
local module = {}

local MIN_VALID_TIME = 1770087731

function module.checkplat()
	local osr = invoker.readfile("/etc/os-release")
	if not osr then
		return false
	end

	return string.find(osr, "debian", 1, true) ~= nil or
		string.find(osr, "Debian", 1, true) ~= nil
end

function module.category()
	return "系统资源"
end

function module.description()
	return "检查时间同步"
end

function module.detailed()
	return "检查系统时间是否明显异常, 并确认 timesyncd 或 ntpd 时间同步服务是否正在运行."
end

function module.suggestion()
	return nil
end

function module.step()
	local now = os.time()
	if now < MIN_VALID_TIME then
		return {
			type = "incorrect UTC",
			now = os.date(nil, now),
		}, true
	end

	local timesyncd = invoker.invoke(invoker.NOSTDIO, "pidof", "timesyncd")
	local ntpd = invoker.invoke(invoker.NOSTDIO, "pidof", "ntpd")
	if timesyncd ~= 0 and ntpd ~= 0 then
		return {
			type = "NTP service NOT found",
			now = os.date(nil, now),
		}, true
	end

	return {
		type = "NTP service found",
		now = os.date(nil, now),
	}, false
end

return module