package fasthttp

import (
	"io"
	"log"

	"github.com/valyala/fasthttp"

	cwf "git.loafle.net/commons_go/websocket_fasthttp"
	"git.loafle.net/commons_go/websocket_fasthttp/websocket"

	rpcServer "git.loafle.net/commons_go/rpc/server"
	"git.loafle.net/commons_go/server"
)

type SocketHandlers struct {
	cwf.SocketHandlers

	RPCServerHandler rpcServer.ServerHandler
}

func (sh *SocketHandlers) Handshake(ctx *fasthttp.RequestCtx) (bool, *fasthttp.ResponseHeader) {
	return true, nil
}

func (sh *SocketHandlers) Handle(conn *websocket.Conn, stopChan <-chan struct{}, doneChan chan<- struct{}) {
	contentType := "json"
	codec, err := sh.RPCServerHandler.GetCodec(contentType)
	if nil != err {
		log.Printf("RPC Handle: %v", err)
		doneChan <- struct{}{}
		return
	}

	var messageType int
	var r io.Reader
	var w io.WriteCloser

	// conn.SetReadLimit(maxMessageSize)
	// conn.SetReadDeadline(time.Now().Add(pongWait))
	// conn.SetPongHandler(func(string) error { c.conn.SetReadDeadline(time.Now().Add(pongWait)); return nil })

	for {
		if messageType, r, err = conn.NextReader(); nil != err {
			doneChan <- struct{}{}
			return
		}

		if w, err = conn.NextWriter(messageType); nil != err {
			doneChan <- struct{}{}
			return
		}

		if err = rpcServer.Handle(sh.RPCServerHandler, codec, r, w); nil != err {
			if server.IsClientDisconnect(err) {
				doneChan <- struct{}{}
				return
			}
			log.Printf("RPC: %v", err)
		}

		if err = w.Close(); nil != err {
			doneChan <- struct{}{}
			return
		}

		select {
		case <-stopChan:
			return
		default:
		}
	}

}

func (sh *SocketHandlers) Validate() {
	sh.SocketHandlers.Validate()

	if nil == sh.RPCServerHandler {
		panic("RPCServerHandler must be specified.")
	}
}