package server

import (
	"io"
	"net"
	"os"

	"git.loafle.net/commons_go/rpc"
	"git.loafle.net/commons_go/rpc/protocol/json"
	"git.loafle.net/commons_go/rpc/server"
)

func NewServerHandler(addr string, registry rpc.Registry) *ServerHandlers {
	sh := &ServerHandlers{}
	sh.RPCRegistry = registry
	sh.addr = addr

	sh.RegisterCodec(json.NewServerCodec(), "json")

	return sh
}

type ServerHandlers struct {
	server.ServerHandlers

	addr string
}

func (sh *ServerHandlers) OnStart() {
	// no op
}

func (sh *ServerHandlers) OnStop() {
	// no op
}

func (sh *ServerHandlers) Listen() (net.Listener, error) {
	os.Remove(sh.addr)
	l, err := net.ListenUnix("unix", &net.UnixAddr{Name: sh.addr, Net: "unix"})
	if nil == err {
		os.Chmod(sh.addr, 0777)
	}
	return l, err
}

func (sh *ServerHandlers) OnAccept(conn net.Conn) (net.Conn, error) {
	return conn, nil
}

func (sh *ServerHandlers) GetContentType(r io.Reader) string {
	return "json"
}

func (sh *ServerHandlers) OnPreRead(r io.Reader) {
	// no op
}

func (sh *ServerHandlers) OnPostRead(r io.Reader) {
	// no op
}

func (sh *ServerHandlers) OnPreWriteResult(w io.Writer, result interface{}) {
	// no op
}

func (sh *ServerHandlers) OnPostWriteResult(w io.Writer, result interface{}) {
	// no op
}

func (sh *ServerHandlers) OnPreWriteError(w io.Writer, err error) {
	// no op
}

func (sh *ServerHandlers) OnPostWriteError(w io.Writer, err error) {
	// no op
}