package service

import (
	"go_dreamfactory/cmd/v2/lib/common"
	"go_dreamfactory/cmd/v2/model"
	"go_dreamfactory/cmd/v2/service/observer"
	"go_dreamfactory/comm"
	"go_dreamfactory/pb"
	"io/ioutil"
	"net/http"
	"strings"
	"time"

	"github.com/gorilla/websocket"
	"github.com/sirupsen/logrus"
	"google.golang.org/protobuf/proto"
)

var (
	conn *ConnServiceImpl
)

type ConnService interface {
	WsConnect(wsUrl string) error
	HttpConnect(url string) ([]byte, error)
	SendMsg(msg *pb.UserMessage, rsp proto.Message) (err error)
	ReceiveMsg() (errdata *pb.ErrorData, msg *pb.UserMessage)
	ListenerPush()
	Close()
}

type ConnServiceImpl struct {
	ws  *websocket.Conn
	obs observer.Observer
}

func NewConnService(obs observer.Observer) ConnService {
	conn = &ConnServiceImpl{obs: obs}
	return conn
}

func GetConnService() *ConnServiceImpl {
	return conn
}

// connect ...
func (c *ConnServiceImpl) WsConnect(wsUrl string) error {
	dialer := &websocket.Dialer{
		HandshakeTimeout: 5 * time.Second,
	}
	ws, _, err := dialer.Dial(wsUrl, nil)
	if err != nil {
		logrus.Errorf("websocket conn err:%v", err)
		return err
	}
	c.ws = ws
	return nil
}

func (c *ConnServiceImpl) HttpConnect(url string) ([]byte, error) {
	res, err := http.Get(url)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()
	return ioutil.ReadAll(res.Body)
}

// listener push
func (c *ConnServiceImpl) ListenerPush() {
	defer func() {
		if err := recover(); err != nil {
			logrus.Errorf("listenerPush err: %v", err)
		}
	}()
	go func() {
		for {
			// time.Sleep(time.Millisecond * 200)
			msg := &pb.UserMessage{}
			_, data, err := c.ws.ReadMessage()
			if err != nil {
				logrus.Errorf("readMessage err:%v", err)
				return
			}

			if err = proto.Unmarshal(data, msg); err != nil {
				return
			}
			// logrus.WithFields(
			// 	logrus.Fields{"MainType": msg.MainType, "SubType": msg.SubType},
			// ).Debug(msg.Data.TypeUrl)

			methodStr := msg.Data.TypeUrl
			methodName := common.SubStr(methodStr, 20, len(methodStr))
			p := &model.PushModel{
				MethodName: methodName,
				DataTime:   time.Now().Format(time.RFC3339),
				Msg:        msg,
			}
			// logrus.WithFields(
			// 	logrus.Fields{"MainType": msg.MainType, "SubType": msg.SubType},
			// ).Debug(methodName)

			renderRespPanel := func(p *model.PushModel) {
				c.obs.Notify(observer.EVENT_REQ_RSP, p.Msg)
			}

			if strings.HasSuffix(methodName, "Push") {
				c.obs.Notify(observer.EVENT_APP_MONI, p)
				c.obs.Notify(observer.EVENT_APP_MONI_EX, msg)
				c.obs.Notify(observer.EVENT_USER_CHANGE, p)
				if methodName == "NotifyErrorNotifyPush" {
					renderRespPanel(p)
				}
			} else {
				//render appTestcase respPanel
				renderRespPanel(p)
			}
		}
	}()

}

// SendMsg ....
func (c *ConnServiceImpl) SendMsg(msg *pb.UserMessage, rsp proto.Message) (err error) {
	defer func() {
		if err := recover(); err != nil {
			logrus.Errorf("sendMsg %v", err)
		}
	}()
	// msg.Sec = r.BuildSecStr()
	if comm.ProtoMarshal(rsp, msg) {
		if data, err := proto.Marshal(msg); err != nil {
			return err
		} else {
			return c.ws.WriteMessage(websocket.BinaryMessage, data)
		}
	}
	return
}

// ReceiveMsg ....
func (c *ConnServiceImpl) ReceiveMsg() (errdata *pb.ErrorData, msg *pb.UserMessage) {
	msg = &pb.UserMessage{}
	_, data, err := c.ws.ReadMessage()
	if err != nil {
		logrus.Errorf("readMessage err:%v", err)
		return
	}

	if err = proto.Unmarshal(data, msg); err != nil {
		return
	}

	if errdata = c.handleNotify(msg); errdata != nil {
		return
	}

	return
}

// err notify
func (c *ConnServiceImpl) handleNotify(msg *pb.UserMessage) (errdata *pb.ErrorData) {
	if msg.MainType == "notify" && msg.SubType == "errornotify" {
		rsp := &pb.NotifyErrorNotifyPush{}
		if !comm.ProtoUnmarshal(msg, rsp) {
			errdata = &pb.ErrorData{
				Code: pb.ErrorCode_PbError,
			}
			return
		}
		errdata = &pb.ErrorData{
			Code: rsp.Code,
		}
		return
	}
	return
}

func (c *ConnServiceImpl) Close() {
	if err := c.ws.Close(); err != nil {
		logrus.Errorf("close ws conn err: %v", err)
	}
}