package statvidtotalmod

import (
	"fmt"
	"time"

	"91porn-server/common"
	"91porn-server/common/db"
	"91porn-server/common/log"
	"91porn-server/models"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

var mdb *db.MongoDB

const table = models.VideoTotalStat

func coll(t *db.MongoTool) *db.MongoTool {
	if t == nil {
		return mdb.Coll(table)
	}
	return t.Coll(table)
}

func initIndex() {
	many := []mongo.IndexModel{
		{
			Keys:    bson.D{{Key: "vid", Value: 1}},
			Options: options.Index().SetUnique(true),
		},
		{
			Keys: bson.D{{Key: "playCount", Value: -1}},
		},
		{
			Keys: bson.D{{Key: "payCount", Value: -1}},
		},
		{
			Keys: bson.D{{Key: "payPlayCount", Value: -1}},
		},
		{
			Keys: bson.D{{Key: "createdAt", Value: -1}},
		},
		{
			Keys: bson.D{{Key: "updatedAt", Value: -1}},
		},
		{
			Keys: bson.D{{Key: "recordAt", Value: -1}},
		},
	}
	if _, err := coll(nil).CreateIndex(many); err != nil {
		panic(fmt.Sprintf("%s model set index err ==>[%+v]", table, err))
	}
}

func ChangeStatTrans(trans *db.MongoTool, recordAt time.Time, incDocMap IncDocMap) error {
	writes := make([]mongo.WriteModel, len(incDocMap))
	i := 0
	for vid, doc := range incDocMap {
		filter := M{
			"vid": vid,
		}
		incM, err := common.ToBsonM(doc)
		if err != nil {
			return err
		}
		update := M{
			"$setOnInsert": M{
				"vid":       vid,
				"createdAt": time.Now(),
			},
			"$set": M{
				"updatedAt": time.Now(),
				"recordAt":  recordAt,
			},
		}
		if len(incM) != 0 {
			update["$inc"] = incM
		}
		writes[i] = mongo.NewUpdateOneModel().
			SetFilter(filter).
			SetUpdate(update).
			SetUpsert(true)
		i++
		log.Debug(fmt.Sprintf("table:%s [ vid:%+v filter:%+v update:%+v ]\n", table, vid, filter, update))
	}
	if len(writes) == 0 {
		return nil
	}
	//bulkWrite 不是原子操作 不具备事务性
	opt := (&options.BulkWriteOptions{}).SetOrdered(false) //设为无序,触发并行写,提升写效率
	_, err := coll(trans).Bulk(writes, opt)
	return err
}

func GetPayCountMap(vidList []ObjectID) (map[ObjectID]int64, error) {
	if len(vidList) == 0 {
		return make(map[ObjectID]int64), nil
	}
	filter := M{
		"vid": M{"$in": vidList},
	}
	list := []struct {
		Vid      ObjectID `bson:"vid"`
		PayCount int64    `bson:"payCount"` //购买次数
	}{}
	if err := coll(nil).Find(&list, filter); err != nil {
		return make(map[ObjectID]int64), nil
	}
	m := make(map[ObjectID]int64, len(list))
	for _, v := range list {
		m[v.Vid] = v.PayCount
	}
	return m, nil
}