-- local protobuf = require "protobuf" --引入文件protobuf.lua
-- --注册protobuffer文件
-- protobuf.register_file（protofile）
-- ​
-- --根据注册的protofile中的类定义进行序列化，返回得到一个stringbuffer
-- protobuf.encode("package.message", { ... })
-- ​
-- --根据注册的protofile中的类定义进行反序列化
-- protobuf.decode("package.message", stringbuffer)

local skynet = require "skynet"
local protobuf = require "protobuf" --引入文件protobuf.lua
local stringify = require "stringify"

protobuf.register_file "./proto/game.pb"
local packname = "game." -- 包名

local Sproto = {}
local tmap = {}

Sproto.enum_id = function (name)
    local ret = protobuf.enum_id("game.msg_cmd", "cmd_"..name)
    if not ret then
        assert(false, "not enum:cmd_"..name)
    end
    return ret
end

Sproto.decode = function(msg)
    local e_id = string.unpack("I4", msg)
    if not e_id then
        skynet.error("Sproto.decode not e_id")
        return 
    end
    local name = tmap[e_id]
    if not name then
        skynet.error("Sproto.decode not name, e_id:"..e_id)
        return nil, nil 
    end
    local str = string.sub(msg, 5, #msg)
    local ret = protobuf.decode(packname..name, str)
    local function fun(args)
        return Sproto.encode(name.."_rsp", args)
    end
    return "REQUEST", name, ret, fun
end

Sproto.encode = function (name, args, ...)
    local e_id = Sproto.enum_id(name)
    local ret = protobuf.encode(packname..name, args)
    if ret and e_id then
        return string.pack("I4", e_id)..ret
    end
    return ret
end

Sproto.register_msg = function(name)
    local e_id = Sproto.enum_id(name)
    if e_id then
        tmap[e_id] = name
    end
end


-- skynet.start(function()
--     skynet.error("protobuf game.pb")

--     --编码
--     local stringbuffer = protobuf.encode("game.login", --对应person.proto协议的包名与类名
--     {
--         sid = 1,
--         account = 3,
--     })
--     stringbuffer = string.pack("I4", 65536)..stringbuffer
--     local msg = string.unpack("I4", stringbuffer)

--     local str = string.sub(stringbuffer, 5, #stringbuffer)
--     -- 解码
--     local data = protobuf.decode("game.login",str)
--     for k, v in pairs(data or {}) do
--         skynet.error(k, v)
--     end
-- end)

skynet.start(function()
    skynet.error("protobuf game.pb")
    Sproto.register_msg("login")
    Sproto.register_msg("login_rsp")
    --编码
    local code = Sproto.encode("login", {
        sid = 1,
        account = 3,
    })

    local req, name , args, func= Sproto.decode(code)
    skynet.error(req, name)
    skynet.error(stringify(args or {}))
    local code2 = func({
        errno = 3;
    })

    req, name , args, func= Sproto.decode(code2)
    skynet.error(req, name)
    skynet.error(stringify(args or {}))
end)