package service

import (
	"sportfitness/base/assembly/base/model"
	"sync"

	"github.com/sirupsen/logrus"
)

// 监听列表， key: userId
var msgBusDataMap = map[int]chan model.Msg{}
var msgBusDataMapMu = sync.Mutex{}

type MsgBus struct {
}

func (m MsgBus) AddListener(userId int) (channelOut <-chan model.Msg) {
	msgBusDataMapMu.Lock()
	defer msgBusDataMapMu.Unlock()
	channel := make(chan model.Msg, 10)
	msgBusDataMap[userId] = channel
	channelOut = channel
	return
}
func (m MsgBus) RemoveListener(userId int) {
	msgBusDataMapMu.Lock()
	defer msgBusDataMapMu.Unlock()
	if c, ok := msgBusDataMap[userId]; ok {
		close(c)
	}
	delete(msgBusDataMap, userId)
}

func (MsgBus) SendMsg(msg model.Msg) {
	msgBusDataMapMu.Lock()
	defer msgBusDataMapMu.Unlock()
	if channel, ok := msgBusDataMap[msg.UserIdRcv]; ok {
		select {
		case channel <- msg:
			break
		default:
			logrus.Errorf("向用户ID[%d]发送信息失败，chan满", msg.UserIdRcv)
		}
	} //else {
	// 设备不在线时，可在此处理
	//}

}