package util

import (
	"context"
	"encoding/json"
	"fmt"
	"github.com/gogf/gf/v2/frame/g"
	. "jygit.jydev.jianyu360.cn/BaseService/ossService/config"
	"log"
	"sync/atomic"
	"time"
)

var DownLoadCounter int64
var GetDetailCounter int64

const OssService = "ossService"

// NodeInfo 描述节点心跳信息
type NodeInfo struct {
	NodeName  string `json:"node_name"`
	Timestamp int64  `json:"timestamp"`
}

// SendHeartbeat 将节点心跳信息写入redis，过期时间为10秒
func SendHeartbeat(ctx context.Context) {
	nodeName := g.Config().MustGet(ctx, "node.node_name").String()
	node := NodeInfo{
		NodeName:  nodeName,
		Timestamp: time.Now().Unix(),
	}
	data, err := json.Marshal(node)
	if err != nil {
		log.Println("Heartbeat marshal error", err)
		return
	}
	Rdb.Set(ctx, OssService+":"+nodeName, data, 10*time.Second)
}

// CheckOnlineNodes 检查在线节点数
func CheckOnlineNodes(ctx context.Context, prevWarn *int64) {
	nodes, _ := GetOnlineNodes(ctx)
	warnMaxNodeNum := g.Config().MustGet(ctx, "warnMaxNodeNum").Int()
	if len(nodes) < warnMaxNodeNum {
		alertMsg := fmt.Sprintf(g.Config().MustGet(ctx, "onlineNodesWarn").String(), warnMaxNodeNum, len(nodes))
		log.Println(alertMsg)
		if nowUnix := time.Now().Unix(); nowUnix-*prevWarn > g.Config().MustGet(ctx, "warnInterval").Int64() {
			*prevWarn = nowUnix
			SendWeixinNotification(alertMsg)
			SendEmailNotification(alertMsg)
		}
	}
}

func GetOnlineNodes(ctx context.Context) ([]NodeInfo, error) {
	keys, err := Rdb.Keys(ctx, OssService+":*").Result()
	var nodes []NodeInfo
	if err != nil {
		log.Println("GetOnlineNodes keys error", err)
		return nodes, err
	} else {
		for _, key := range keys {
			data, err := Rdb.Get(ctx, key).Result()
			if err != nil {
				log.Println("GetOnlineNodes key error", err)
				continue
			}
			var node NodeInfo
			json.Unmarshal([]byte(data), &node)
			nodes = append(nodes, node)
		}
	}
	return nodes, nil
}

func CheckDownLoadQueue(ctx context.Context, prevWarn *int64) {
	warnSize := g.Config().MustGet(ctx, "downLoadLineUpWarnSize").Int64()
	if atomic.LoadInt64(&DownLoadCounter) >= warnSize {
		alertMsg := fmt.Sprintf(g.Config().MustGet(ctx, "downLoadQueueWarn").String(), g.Config().MustGet(ctx, "downLoadPoolSize").Int(), warnSize)
		log.Println(alertMsg)
		if nowUnix := time.Now().Unix(); nowUnix-*prevWarn > g.Config().MustGet(ctx, "warnInterval").Int64() {
			*prevWarn = nowUnix
			SendWeixinNotification(alertMsg)
			SendEmailNotification(alertMsg)
		}
	}
}

func CheckGetDetailQueue(ctx context.Context, prevWarn *int64) {
	warnSize := g.Config().MustGet(ctx, "getDetailLineUpWarnSize").Int64()
	if atomic.LoadInt64(&DownLoadCounter) >= warnSize {
		alertMsg := fmt.Sprintf(g.Config().MustGet(ctx, "getDetailQueueWarn").String(), g.Config().MustGet(ctx, "downLoadPoolSize").Int(), g.Config().MustGet(ctx, "getDetailFromEsPoolSize").Int(), g.Config().MustGet(ctx, "getDetailFromMgoPoolSize").Int(), warnSize)
		log.Println(alertMsg)
		if nowUnix := time.Now().Unix(); nowUnix-*prevWarn > g.Config().MustGet(ctx, "warnInterval").Int64() {
			*prevWarn = nowUnix
			SendWeixinNotification(alertMsg)
			SendEmailNotification(alertMsg)
		}
	}
}