-- 不能使用 debug 命名模块，会冲突，
-- 要使用其余名字比如 loghelper
local loghelper = {} 
io.stdout:setvbuf("no")

loghelper.LEVEL = {
	INFO = 4, 
	DEBUG = 3, 
	WARN = 2, 
	ERROR = 1, 
	NONE = 0
}

local logTag = { 
	[loghelper.LEVEL.INFO]  = "[Info]", 
	[loghelper.LEVEL.DEBUG] = "[Debug]", 
	[loghelper.LEVEL.WARN]  = "[Warn]", 
	[loghelper.LEVEL.ERROR] = "[Error]", 
}

loghelper.level = loghelper.LEVEL.INFO

loghelper.strict = function(level)
	loghelper.level = level
end

loghelper.log = function(level, msg)
	if level <= loghelper.level then 
		print(logTag[level] .. ":" .. msg)
	end 
end 

return loghelper