package fasthttp

import (
	"io"

	"git.loafle.net/commons_go/logging"
	"git.loafle.net/commons_go/rpc/client"
	"git.loafle.net/commons_go/rpc/protocol"
	cwfc "git.loafle.net/commons_go/websocket_fasthttp/client"
	"git.loafle.net/commons_go/websocket_fasthttp/websocket"
)

func New(socketBuilder cwfc.SocketBuilder) client.ClientReadWriteCloseHandler {
	return &ClientReadWriteCloseHandlers{
		SocketBuilder: socketBuilder,
	}
}

type ClientReadWriteCloseHandlers struct {
	client.ClientReadWriteCloseHandlers

	SocketBuilder cwfc.SocketBuilder
}

func (crwch *ClientReadWriteCloseHandlers) Connect(clientCTX client.ClientContext) (interface{}, error) {

	return cwfc.NewSocket(crwch.SocketBuilder, clientCTX)
}

func (crwch *ClientReadWriteCloseHandlers) ReadResponse(clientCTX client.ClientContext, codec protocol.ClientCodec, conn interface{}) (protocol.ClientResponseCodec, error) {
	soc := conn.(cwfc.Socket)

	_, buf, err := soc.ReadMessage()
	if nil != err {
		if !websocket.IsUnexpectedCloseError(err) {
			logging.Logger().Errorf("RPC: %v", err)
		}
		return nil, io.EOF
	}

	return codec.NewResponse(buf)
}

func (crwch *ClientReadWriteCloseHandlers) WriteRequest(clientCTX client.ClientContext, codec protocol.ClientCodec, conn interface{}, method string, params []interface{}, id interface{}) error {
	var (
		buf  []byte
		wErr error
	)
	soc := conn.(cwfc.Socket)

	buf, wErr = codec.NewRequest(method, params, id)
	if nil != wErr {
		return wErr
	}

	wErr = soc.WriteMessage(websocket.TextMessage, buf)
	if nil != wErr {
		if websocket.IsUnexpectedCloseError(wErr) {
			logging.Logger().Errorf("RPC: %v", wErr)
		}
		return io.EOF
	}

	return nil
}

func (crwch *ClientReadWriteCloseHandlers) Disconnect(clientCTX client.ClientContext, conn interface{}) {
	soc := conn.(cwfc.Socket)
	soc.Close()
}

func (crwch *ClientReadWriteCloseHandlers) Validate() {
	crwch.ClientReadWriteCloseHandlers.Validate()

	if nil == crwch.SocketBuilder {
		logging.Logger().Panicf("RPC Client: SocketBuilder must be specified")
	}

}