package fasthttp

import (
	"github.com/gorilla/websocket"

	"git.loafle.net/commons_go/rpc"
	"git.loafle.net/commons_go/rpc/protocol"
	cwf "git.loafle.net/commons_go/websocket_fasthttp"
)

type ServletHandlers struct {
}

func (sh *ServletHandlers) GetRequest(servletCTX rpc.ServletContext, codec protocol.ServerCodec, conn interface{}) (protocol.ServerRequestCodec, error) {
	soc := conn.(cwf.Socket)
	_, r, err := soc.NextReader()

	requestCodec, err := codec.NewRequest(r)

	return requestCodec, err
}

func (sh *ServletHandlers) SendResponse(servletCTX rpc.ServletContext, conn interface{}, requestCodec protocol.ServerRequestCodec, result interface{}, err error) error {
	soc := conn.(cwf.Socket)

	wc, wErr := soc.NextWriter(websocket.TextMessage)
	if nil != wErr {
		return wErr
	}

	if nil != err {
		if wErr := requestCodec.WriteError(wc, 500, err); nil != wErr {
			return wErr
		}
	} else {
		if wErr := requestCodec.WriteResponse(wc, result); nil != wErr {
			return wErr
		}
	}

	return nil
}

func (sh *ServletHandlers) SendNotification(servletCTX rpc.ServletContext, conn interface{}, codec protocol.ServerCodec, method string, args ...interface{}) error {
	soc := conn.(cwf.Socket)

	wc, wErr := soc.NextWriter(websocket.TextMessage)
	if nil != wErr {
		return wErr
	}

	if wErr := codec.WriteNotification(wc, method, args); nil != wErr {
		return wErr
	}

	return nil
}