local jnet = {} 

jnet.DataType = {
    INT = 1,
    FLOAT = 2,
    BOOL = 3,
    STRING = 4
}

local INT = jnet.DataType.INT
local FLOAT = jnet.DataType.FLOAT
local BOOL = jnet.DataType.BOOL
local STRING = jnet.DataType.STRING

local grab = function(buffer, t, sp)
	if t == INT then 
		return buffer:grabInteger(sp)
	elseif t == FLOAT then 
		return buffer:grabFloat(sp)
	elseif t == BOOL then 
		return buffer:grabBoolean(sp)
	elseif t == STRING then 
		return buffer:grabString(sp)
	end
end 

-- return jin.net.Buffer
jnet.serialize = function(message, buffer)
	if buffer == nil then 
		return 
	end 
	for k, v in pairs(message) do 
		buffer:append(v)
	end
	return buffer
end 

-- input jin.net.Buffer, startpoint 
-- return messege table
jnet.deserialize = function(msg_type, buffer, startpoint)
    local message = {}
    local p = startpoint or 0
    for k, t in pairs(msg_type) do 
    	local v, l = grab(buffer, t, p)
    	p = l + p
        message[k] = v
    end 
    return message
end

return jnet