package rpc

import (
	"fmt"
	"github.com/golang/protobuf/proto"
	"sync"
)

type PBProcessor struct {
}

var rpcPbResponseDataPool sync.Pool
var rpcPbRequestDataPool sync.Pool


func init(){
	rpcPbResponseDataPool.New = func()interface{}{
		return &PBRpcResponseData{}
	}

	rpcPbRequestDataPool.New = func()interface{}{
		return &PBRpcRequestData{}
	}
}

func (m *PBRpcRequestData) GetParamValue() interface{}{
	if m.GetAddtionParam() == nil {
		return nil
	}

	switch x := m.AddtionParam.AdditionOneof.(type) {
	case *AdditionParam_SParam:
		return x.SParam
	case *AdditionParam_UParam:
		return x.UParam
	case *AdditionParam_StrParam:
		return x.StrParam
	case *AdditionParam_BParam:
		return x.BParam
	}

	return nil
}

func (m *PBRpcRequestData) GetAdditionParams() IRawAdditionParam{
	if m.GetAddtionParam() == nil {
		return nil
	}

	return m
}

func (slf *PBRpcRequestData) MakeRequest(seq uint64,serviceMethod string,noReply bool,inParam []byte,inAdditionParam interface{}) *PBRpcRequestData{
	slf.Seq = proto.Uint64(seq)
	slf.ServiceMethod = proto.String(serviceMethod)
	slf.NoReply = proto.Bool(noReply)
	slf.InParam = inParam

	if inAdditionParam == nil {
		return slf
	}

	switch inAdditionParam.(type) {
	case int:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_SParam{int64(inAdditionParam.(int))}}
	case int32:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_SParam{int64(inAdditionParam.(int32))}}
	case int16:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_SParam{int64(inAdditionParam.(int16))}}
	case int64:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_SParam{inAdditionParam.(int64)}}
	case uint:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_UParam{uint64(inAdditionParam.(uint))}}
	case uint32:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_UParam{uint64(inAdditionParam.(uint32))}}
	case uint16:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_UParam{uint64(inAdditionParam.(uint16))}}
	case uint64:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_UParam{inAdditionParam.(uint64)}}
	case string:
		slf.AddtionParam =  &AdditionParam{AdditionOneof:&AdditionParam_StrParam{inAdditionParam.(string)}}
	case []byte:
		slf.AddtionParam = &AdditionParam{AdditionOneof: &AdditionParam_BParam{inAdditionParam.([]byte)}}
	default:
		panic(fmt.Sprintf("not support type %+v",inAdditionParam))
	}

	return slf
}

func (slf *PBRpcResponseData) MakeRespone(seq uint64,err RpcError,reply []byte) *PBRpcResponseData{
	slf.Seq = proto.Uint64(seq)
	slf.Error = proto.String(err.Error())
	slf.Reply = reply

	return slf
}

func (slf *PBProcessor) Marshal(v interface{}) ([]byte, error){
	return proto.Marshal(v.(proto.Message))
}

func (slf *PBProcessor) Unmarshal(data []byte, msg interface{}) error{
	protoMsg := msg.(proto.Message)
	return proto.Unmarshal(data, protoMsg)
}

func (slf *PBProcessor) MakeRpcRequest(seq uint64,serviceMethod string,noReply bool,inParam []byte,inAdditionParam interface{}) IRpcRequestData{
	pPbRpcRequestData := rpcPbRequestDataPool.Get().(*PBRpcRequestData)
	pPbRpcRequestData.MakeRequest(seq,serviceMethod,noReply,inParam,inAdditionParam)
	return pPbRpcRequestData
}

func (slf *PBProcessor) MakeRpcResponse(seq uint64,err RpcError,reply []byte) IRpcResponseData {
	pPBRpcResponseData := rpcPbResponseDataPool.Get().(*PBRpcResponseData)
	pPBRpcResponseData.MakeRespone(seq,err,reply)
	return pPBRpcResponseData
}

func (slf *PBProcessor) ReleaseRpcRequest(rpcRequestData IRpcRequestData){
	rpcPbRequestDataPool.Put(rpcRequestData)
}

func (slf *PBProcessor) ReleaseRpcResponse(rpcResponseData IRpcResponseData){
	rpcPbResponseDataPool.Put(rpcResponseData)
}

func (slf *PBProcessor) IsParse(param interface{}) bool {
	_,ok := param.(proto.Message)
	return ok
}

func (slf *PBProcessor)	GetProcessorType() RpcProcessorType{
	return RpcProcessorPb
}

func (slf *PBRpcRequestData) IsNoReply() bool{
	return slf.GetNoReply()
}

func (slf *PBRpcResponseData)		GetErr() *RpcError {
	if slf.GetError() == "" {
		return nil
	}
	return Errorf(slf.GetError())
}