package main

import (
	"context"
	"encoding/json"
	"go.mongodb.org/mongo-driver/bson/primitive"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
	"log"
	"mfw/util"
	"net"
	"time"
)

var sid, eid primitive.ObjectID
var udpclient util.UdpClient //udp对象
func main() {
	udpclient = util.UdpClient{Local: "10.171.112.160:1199", BufSize: 1024}//10.171.112.160:1199
	udpclient.Listen(processUdpMsg)
	log.Printf("Udp listening port: %s:%s\n", "10.171.112.160", "1199")
	client, err := mongo.NewClient(options.Client().ApplyURI("mongodb://10.30.94.175:27081,10.81.232.246:27082,10.172.242.243:27080")) //192.168.3.207  10.30.94.175
	if err != nil {
		log.Println(17, err)
		return
	}
	ctx := context.Background()
	err = client.Connect(ctx)
	if err != nil {
		log.Println(23, err)
		return
	}

	result := client.Database("qfw").Collection("bidding").FindOne(ctx, primitive.M{}, options.FindOne().SetSort(primitive.M{"_id": -1}).SetProjection(primitive.M{"_id": 1}))
	tmp := make(map[string]primitive.ObjectID)
	err = result.Decode(&tmp)
	if err != nil {
		log.Println(31, err)
		return
	}
	log.Println("start id",tmp)
	timer := time.NewTimer(time.Minute * 1)
	var isfive bool
	for  {
		select {
		case <-timer.C:
			if sid.IsZero() {
				sid = tmp["_id"]
			} else {
				if !eid.IsZero() && eid != sid{
					sid = eid
				}else {
					log.Println(sid,eid,"为空或者id一致")
					timer.Reset(time.Minute)
					continue
				}
			}
			result2 := client.Database("qfw").Collection("bidding").FindOne(ctx, primitive.M{}, options.FindOne().SetSort(primitive.M{"_id": -1}).SetProjection(primitive.M{"_id": 1}))
			tmp2 := make(map[string]primitive.ObjectID)
			err := result2.Decode(&tmp2)
			if err != nil {
				log.Println(44, err)
				timer.Reset(time.Minute)
				continue
			}

			countDocuments, err := client.Database("qfw").Collection("bidding").CountDocuments(ctx, primitive.M{"_id": primitive.M{
				"$gte": sid,
				"$lte": tmp2["_id"],
			}})
			if err != nil {
				log.Println(52, err)
				timer.Reset(time.Minute)
				continue
			}
			if countDocuments <= 100 && !isfive{
				isfive = true
				log.Println("数据不够100条",sid,tmp2["_id"],countDocuments)
				timer.Reset(time.Minute*5)
				continue
			}
			eid = tmp2["_id"]
			tmpmap := map[string]string{
				"gtid":  sid.Hex(),
				"lteid": eid.Hex(),
			}
			tmpbyte, _ := json.Marshal(tmpmap)
			log.Println("发送",string(tmpbyte),"udp到10.171.112.160:1109 ",udpclient.WriteUdp(tmpbyte, util.OP_TYPE_DATA, &net.UDPAddr{
				IP:   net.ParseIP("10.171.112.160"),
				Port: 1109,
			}))
			//log.Println("发送",string(tmpbyte),"udp到10.171.112.160:1109 ")

			log.Println(sid, tmp2["_id"], countDocuments)
			timer.Reset(time.Minute)
			isfive = false
		}
	}
}

func processUdpMsg(b byte, bytes []byte, addr *net.UDPAddr) {
	switch b {
	case util.OP_NOOP:
		log.Println("节点接收成功", string(bytes), addr.String())
	}
}