videoplayer/handler/device.go

package handler

import (
	"context"
	"encoding/json"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
	"github.com/gorilla/websocket"
	"net/http"
	"strconv"
	"time"
	"videoplayer/proto"
	"videoplayer/service"
	"videoplayer/worker"
)

type DeviceAddReq struct {
	DeviceName     string `json:"device_name" form:"device_name"`
	DeviceIP       string `json:"device_ip" form:"device_ip"`
	DeviceStatus   string `json:"device_status" form:"device_status"`
	AuthID         int    `json:"auth_id" form:"auth_id"`
	DeviceInfo     string `json:"device_info" form:"device_info"`
	DeviceType     string `json:"device_type" form:"device_type"`
	DeviceLocation string `json:"device_location" form:"device_location"`
}

type DeviceUpdateReq struct {
	ID             int    `json:"id" form:"id"`
	DeviceName     string `json:"device_name" form:"device_name" `
	DeviceIP       string `json:"device_ip" form:"device_ip" `
	DeviceStatus   string `json:"device_status" form:"device_status" `
	AuthID         int    `json:"auth_id" form:"auth_id" `
	DeviceInfo     string `json:"device_info" form:"device_info" `
	DeviceType     string `json:"device_type" form:"device_type" `
	DeviceLocation string `json:"device_location" form:"device_location" `
}

type DeviceStatus struct {
	IP     string `json:"ip" form:"ip" `
	Status string `json:"status" form:"status" `
	ID     int    `json:"id" form:"id" `
}

type DeviceDelReq struct {
	ID int `json:"id" form:"id" `
}

type DeviceRestartReq struct {
	ID     int    `json:"id" form:"id" `
	Option string `json:"option" form:"option" `
}

func SetUpDeviceGroup(router *gin.Engine) {
	deviceGroup := router.Group("/device")
	deviceGroup.POST("/get_device_list", GetDeviceList)
	deviceGroup.POST("/restart", RestartDevice)
	deviceGroup.POST("/add_device", AddDevice)
	deviceGroup.POST("/set_device_status", SetDeviceStatus)
	deviceGroup.POST("/update_device", UpdateDevice)
	deviceGroup.POST("/delete_device", DeleteDevice)
	deviceGroup.GET("/get_real_time_image", GetRealTimeImage)

}

func DeleteDevice(c *gin.Context) {
	id, _ := c.Get("id")
	//获取post参数
	var req DeviceDelReq
	if err := c.ShouldBind(&req); err == nil {
		if service.DeleteDevice(req.ID, int(id.(float64))) {
			c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
		} else {
			c.JSON(200, gin.H{"code": proto.OperationFailed, "message": "failed"})
		}
	} else {
		c.JSON(200, gin.H{"code": proto.ParameterError, "message": "failed"})
	}
}

func UpdateDevice(c *gin.Context) {
	var req DeviceUpdateReq
	user_id, _ := c.Get("id")
	if err := c.ShouldBind(&req); err == nil {
		res := service.UpdateDevice(req.DeviceName, req.DeviceIP, req.DeviceStatus, req.DeviceInfo, req.DeviceType, req.DeviceLocation, req.ID, int(user_id.(float64)))
		if res {
			c.JSON(200, gin.H{
				"code":    0,
				"message": "success",
			})
		} else {
			c.JSON(200, gin.H{
				"code":    proto.DeviceUpdateFailed,
				"message": "failed",
			})
		}
	} else {
		c.JSON(200, gin.H{
			"code":    proto.ParameterError,
			"message": "failed",
		})
	}
}
func SetDeviceStatus(c *gin.Context) {
	var req DeviceStatus
	id, _ := c.Get("id")
	if err := c.ShouldBind(&req); err == nil {
		if req.IP != "" {
			if service.SetDeviceStatus(req.Status, req.ID, int(id.(float64))) {
				c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
			} else {
				c.JSON(200, gin.H{"code": 1, "message": "failed"})
			}
		}
	} else {
		c.JSON(200, gin.H{"code": proto.ParameterError, "message": "failed", "data": err.Error()})
	}
}

func AddDevice(c *gin.Context) {
	var req DeviceAddReq
	id, _ := c.Get("id")
	if err := c.ShouldBind(&req); err == nil {
		user_id := int(id.(float64))
		fmt.Println(req)
		device_id := service.AddDevice(req.DeviceName, req.DeviceIP, req.DeviceStatus, req.DeviceInfo, req.DeviceType, req.DeviceLocation, user_id)
		if device_id != 0 {
			c.JSON(200, gin.H{
				"code":    proto.SuccessCode,
				"message": "success",
				"data":    device_id,
			})
		} else {
			c.JSON(200, gin.H{
				"code":    proto.DeviceAddFailed,
				"message": "failed",
				"data":    "device add failed",
			})
		}
	} else {
		c.JSON(200, gin.H{
			"code":    proto.ParameterError,
			"message": "failed",
			"data":    err.Error(),
		})
	}
}

func GetDeviceList(c *gin.Context) {
	id, _ := c.Get("id")
	devices := service.GetDeviceList(int(id.(float64)))
	c.JSON(200, gin.H{
		"code":    proto.SuccessCode,
		"message": "success",
		"data":    devices,
	})
}

func RestartDevice(c *gin.Context) {
	user_id, _ := c.Get("id")
	var req DeviceRestartReq
	if err := c.ShouldBind(&req); err != nil {
		c.JSON(200, gin.H{"code": proto.ParameterError, "message": "failed", "data": err.Error()})
		return
	}
	device_id := req.ID
	if req.Option == "one" {
		device := service.GetDevice(device_id, int(user_id.(float64)))
		if device.ID != 0 {
			if device.DeviceIP != "" {
				if Restart(device.DeviceIP) {
					c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
				} else {
					c.JSON(200, gin.H{"code": proto.DeviceRestartFailed, "message": "failed"})
				}
			}
		} else {
			c.JSON(200, gin.H{"code": proto.DataNotFound, "message": "failed", "data": string(device_id) + ": device not found"})
		}
	} else if req.Option == "all" {
		devices := service.GetDeviceList(int(user_id.(float64)))
		if len(devices) > 0 {
			for _, device := range devices {
				if device.DeviceIP != "" {
					if !Restart(device.DeviceIP) {
						c.JSON(200, gin.H{"code": proto.DeviceRestartFailed, "message": "failed"})
						return
					}
				}
			}
		} else {
			c.JSON(200, gin.H{"code": proto.DataNotFound, "message": "failed", "data": "device not found"})
		}
		c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
	}
}

func Restart(ip string) bool {
	url := "http://" + ip + "/restart"
	resp, err := http.Get(url)
	if err != nil {
		return false
	}
	defer resp.Body.Close()
	if resp.StatusCode == 200 {
		return true
	}
	return false
}

// 发送实时视频流
func GetRealTimeImage(c *gin.Context) {
	id, _ := c.Get("id")
	id1 := int(id.(float64))
	device_id := c.Query("device_id")
	device_id_int, _ := strconv.Atoi(device_id)
	device := service.GetDevice(device_id_int, id1)
	if device.ID == 0 {
		c.JSON(http.StatusOK, gin.H{"code": proto.DataNotFound, "message": "device not found"})
		return
	}
	ws, err := upgrader.Upgrade(c.Writer, c.Request, nil)
	clients[ws] = true
	if err != nil {
		fmt.Println("connect wss err:", err)
		return
	}
	worker.SetRedisWithExpire(strconv.Itoa(int(device.ID))+"_is_play", "1", time.Minute*5)
	fmt.Println("device_id:", device_id_int, " has set is_play to 1")
	go subscribeAndHandleMessages(ws, device_id_int)
}

func subscribeAndHandleMessages(ws *websocket.Conn, device_id int) {
	ctx := context.Background()
	pubsub := worker.RedisClient.Subscribe(ctx, strconv.Itoa(device_id)+"_frames_msgs")
	// 生成唯一连接 uuid
	con_id := uuid.New().String()
	online_conn_key := "device_" + strconv.Itoa(device_id) + "_online_conn_ids"
	// 加入设备在线连接集合
	worker.SetRedisSetAddWithExpire(online_conn_key, con_id, time.Minute*5)
	defer pubsub.Close()
	defer ws.Close()
	ch := pubsub.Channel()
	var check_cnt int
	var ticker *time.Ticker
	for {
		select {
		case msg, _ := <-ch:
			var res3 []byte
			var msgObj proto.Message
			if msg.Payload != "" {
				msgObj.Type = "img"
				msgObj.Msg = msg.Payload
				msgObj.From_user_id = -1
				res3, _ = json.Marshal(msgObj)
			} else {
				if check_cnt < 5 {
					check_cnt++
					time.Sleep(time.Millisecond * 200)
					continue
				}
				check_cnt = 0
				msgObj.Type = "check"
				msgObj.Msg = "check"
				msgObj.From_user_id = -1
				res3, _ = json.Marshal(msgObj)
			}
			// fmt.Println("send message to client length:", len(res3))
			err2 := ws.WriteMessage(websocket.TextMessage, res3)
			if err2 != nil {
				clientsMux.Lock()
				clients[ws] = false
				clientsMux.Unlock()
				fmt.Println("send message to client err:", err2)
				worker.SetRedisSetRemove(online_conn_key, con_id)
				goto end
			}
		default:
			if ticker == nil {
				ticker = time.NewTicker(time.Second)
			}
			select {
			case <-ticker.C:
				err := ws.WriteControl(websocket.PingMessage, []byte{}, time.Now().Add(time.Second))
				if err != nil {
					fmt.Println("Connection check failed:", err)
					worker.SetRedisSetRemove(online_conn_key, con_id)
					goto end
				}
			default:
				continue
			}
		}
	}

end:
	// 查看是否还有其他连接，没有则设置 is_play 为 0
	if worker.IsContainKey(online_conn_key) == false {
		worker.SetRedisWithExpire(strconv.Itoa(device_id)+"_is_play", "0", time.Minute*5)
		fmt.Println("device_id:", device_id, " has set is_play to 0")
	}

}