package handler

import (
	"encoding/json"
	"fusenapi/constants"
	"fusenapi/server/websocket/internal/svc"
	"fusenapi/server/websocket/internal/types"
	"fusenapi/utils/auth"
	"github.com/google/uuid"
	"github.com/gorilla/websocket"
	"github.com/zeromicro/go-zero/core/logx"
	"net/http"
	"sync"
	"time"
)

var (
	//升级
	upgrade = websocket.Upgrader{
		//允许跨域
		CheckOrigin: func(r *http.Request) bool {
			return true
		},
	}
	//连接map池
	mapConn = sync.Map{}
)

// 每个连接的连接属性
type wsConnectItem struct {
	conn     *websocket.Conn //websocket的连接
	property interface{}     //属性
}

func DataTransferHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		// 解析JWT token,并对空用户进行判断
		claims, err := svcCtx.ParseJwtToken(r)
		// 如果解析JWT token出错,则返回未授权的JSON响应并记录错误消息
		if err != nil {
			logx.Info("unauthorized:", err.Error()) // 记录错误日志
			w.Write([]byte("connect failed:unauthorized"))
			return
		}
		if claims != nil {
			// 从token中获取对应的用户信息
			_, err = auth.GetUserInfoFormMapClaims(claims)
			// 如果获取用户信息出错,则返回未授权的JSON响应并记录错误消息
			if err != nil {
				return
			}
		} else {
			// 如果claims为nil,则认为用户身份为白板用户
			w.Write([]byte("connect failed:unauthorized!!"))
			return
		}
		//升级websocket
		conn, err := upgrade.Upgrade(w, r, r.Header)
		if err != nil {
			logx.Error("http upgrade websocket err:", err)
			w.Write([]byte("http upgrade websocket err"))
			return
		}
		//生成连接唯一标识
		uniqueId := uuid.New().String() + time.Now().Format("20060102150405")
		c := wsConnectItem{
			conn: conn,
		}
		//保存连接
		mapConn.Store(uniqueId, c)
		//把uniqueId传回去
		rsp := types.DataTransferRsp{
			MsgType: constants.WEBSOCKET_CONNECT_SUCCESS,
			Message: uniqueId,
		}
		b, _ := json.Marshal(rsp)
		conn.WriteMessage(websocket.TextMessage, b)
	}
}

func (w *wsConnectItem) Readloop() {

}