package mqtt

import (
	"context"
	"fmt"
	"log"
	"net/url"
	"sync"
	"testing"
	"time"

	"github.com/eclipse/paho.golang/autopaho"
	"github.com/eclipse/paho.golang/autopaho/extensions/rpc"
	"github.com/eclipse/paho.golang/paho"
	"google.golang.org/protobuf/proto"
	"joylink.club/iot/config"
	"joylink.club/iot/dto"
)

func TestRequest(t *testing.T) {
	listen()
	clientId := "iotlogreq_test"
	logReqTopic := GetLogReqTopic()
	cliCfg := getCmConfig(clientId, logReqTopic)

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()
	cm, err := autopaho.NewConnection(ctx, cliCfg)
	if err != nil {
		panic(err)
	}
	log.Print("TEST")

	time.Sleep(3 * time.Second)

	h, err := rpc.NewHandler(ctx, rpc.HandlerOpts{
		Conn:             cm,
		Router:           cliCfg.Router,
		ResponseTopicFmt: "%s/iotlogresp",
		ClientID:         clientId,
	})

	if err != nil {
		log.Fatal(err)
	}

	req := &dto.IotServiceLogReq{
		Count: 10,
	}
	b, err := proto.Marshal(req)
	if err != nil {
		log.Fatal(err)
	}
	resp, err := h.Request(ctx, &paho.Publish{
		Topic:   logReqTopic,
		Payload: b,
	})
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("请求结果: %v\n", resp)
	lr := &dto.IotServiceLogResp{}
	err = proto.Unmarshal(resp.Payload, lr)
	log.Printf("Received response: %s\n", lr)

	time.Sleep(3 * time.Second)
}

func listen() {
	var v sync.WaitGroup

	v.Add(1)

	go func() {
		config.LoadConfig()
		mqttcfg := config.Cfg.Mqtt
		cmc := &IotMqttConfig{
			AppId:             mqttcfg.Topic.App,
			BrokerUrl:         mqttcfg.Address,
			ClientId:          mqttcfg.ClientId,
			Username:          mqttcfg.Username,
			Password:          mqttcfg.Password,
			KeepAlive:         mqttcfg.KeepAlive,
			ConnectRetryDelay: mqttcfg.ConnectRetryDelay,
			ConnectTimeout:    mqttcfg.ConnectTimeout,
		}
		err := Start(cmc)
		if err != nil {
			panic(err)
		}

		time.Sleep(2 * time.Second)

		RegIotLogReqHandler(func(req *dto.IotServiceLogReq) *dto.IotServiceLogResp {
			fmt.Printf("收到日志请求: %v\n", req)
			resp := &dto.IotServiceLogResp{
				Logs: []string{"日志1", "日志2"},
			}
			fmt.Printf("返回日志响应: %v\n", resp)
			return resp
		})

		v.Done()

		for {
			time.Sleep(1 * time.Second)
		}
	}()

	v.Wait()
}

func getCmConfig(clientId, logReqTopic string) autopaho.ClientConfig {
	addr, _ := url.Parse("tcp://192.168.3.233:1883")
	cc := autopaho.ClientConfig{
		BrokerUrls: []*url.URL{addr},
		KeepAlive:  60,
		OnConnectionUp: func(cm *autopaho.ConnectionManager, connAck *paho.Connack) {
			fmt.Println("mqtt connection up")
			ctx, cancel := context.WithTimeout(context.Background(), time.Duration(5*time.Second))
			defer cancel()
			if _, err := cm.Subscribe(ctx, &paho.Subscribe{
				Subscriptions: []paho.SubscribeOptions{
					{Topic: logReqTopic, QoS: 0},
				},
			}); err != nil {
				fmt.Printf("failed to subscribe (%s). This is likely to mean no messages will be received.", err)
				return
			}
			fmt.Println("mqtt subscription made")
		},
		OnConnectError: func(err error) { fmt.Printf("error whilst attempting connection: %s\n", err) },
		ClientConfig: paho.ClientConfig{
			ClientID:      clientId,
			Router:        paho.NewStandardRouter(),
			OnClientError: func(err error) { fmt.Printf("%s requested disconnect: %s\n", clientId, err) },
			OnServerDisconnect: func(d *paho.Disconnect) {
				if d.Properties != nil {
					fmt.Printf("%s requested disconnect: %s\n", clientId, d.Properties.ReasonString)
				} else {
					fmt.Printf("%s requested disconnect; reason code: %d\n", clientId, d.ReasonCode)
				}
			},
		},
	}
	cc.SetUsernamePassword("rtsts_service", []byte("joylink@0503"))
	return cc
}