package mgodb

import (
	"context"
	"eta/eta_forum_admin/utils"
	"fmt"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/event"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
	"go.mongodb.org/mongo-driver/mongo/readpref"
	"sync"
	"time"
)

var (
	MaxPoolSize = uint64(50)
	MinPoolSize = uint64(0)
)

//func init() {
//	fmt.Println("start MgoNewClient")
//	MgoNewClient()
//	fmt.Println("end MgoNewClient")
//}

type MgoConfig struct {
	Url           string `json:"url"`
	Username      string `json:"username"`
	Password      string `json:"password"`
	AuthMechanism string `json:"auth_mechanism"`
	Database      string `json:"database"`
}

func NewMgoClient(mgoConfig MgoConfig) *mongo.Client {
	var err error
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	credential := options.Credential{
		AuthMechanism: mgoConfig.AuthMechanism,
		Username:      mgoConfig.Username,
		Password:      mgoConfig.Password,
	}
	clientOpts := options.Client().ApplyURI(mgoConfig.Url).SetAuth(credential)
	startedCommands := sync.Map{} // map[int64]bson.Raw

	cmdMonitor := &event.CommandMonitor{
		Started: func(_ context.Context, evt *event.CommandStartedEvent) {
			startedCommands.Store(evt.RequestID, evt.Command)
			//startedCommands[evt.RequestID] = evt.Command
		},
		Succeeded: func(_ context.Context, evt *event.CommandSucceededEvent) {
			//log.Printf("Command: %v Reply: %v\n",
			//	startedCommands[evt.RequestID],
			//	evt.Reply,
			//)
			var commands bson.Raw
			v, ok := startedCommands.Load(evt.RequestID)
			if ok {
				commands = v.(bson.Raw)
			}
			utils.MongoLog.Info("\n【MongoDB】[%.3fms] [%v] \n", float64(evt.Duration)/1e6, commands)
		},
		Failed: func(_ context.Context, evt *event.CommandFailedEvent) {
			//log.Printf("Command: %v Failure: %v\n",
			//	startedCommands[evt.RequestID],
			//	evt.Failure,
			//)
			var commands bson.Raw
			v, ok := startedCommands.Load(evt.RequestID)
			if ok {
				commands = v.(bson.Raw)
			}
			utils.MongoLog.Info("\n【MongoDB】[%.3fms] [%v] \n %v \n", float64(evt.Duration)/1e6, commands, evt.Failure)
		},
	}

	// 创建options

	clientOpts.SetMonitor(cmdMonitor)

	clientOpts.SetMinPoolSize(MinPoolSize)
	clientOpts.SetMaxPoolSize(MaxPoolSize)
	clientOpts.SetConnectTimeout(10 * time.Second)

	mgoClient, err := mongo.Connect(context.TODO(), clientOpts)
	if err != nil {
		panic(err)
	}

	if err = mgoClient.Ping(ctx, readpref.Primary()); err != nil {
		panic(err)
	}

	fmt.Println("Connected to MongoDB!")
	return mgoClient
}