package userrecomod

import (
	"fmt"
	"time"

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

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

var mdb *db.MongoDB

const table = models.UserReco

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: "sortKey", Value: -1}, {Key: "createdAt", Value: -1}},
		},
		{
			Keys: bson.D{{Key: "active", Value: 1}},
		},
		{
			Keys: bson.D{{Key: "updatedAt", Value: 1}},
		},
		{
			Keys: bson.D{{Key: "createdAt", Value: 1}},
		},
	}
	if _, err := coll(nil).CreateIndex(many); err != nil {
		panic(fmt.Sprintf("%s model set index err ==>[%+v]", table, err))
	}
}

// getListCnt 获取总数
func getListCnt(cond bson.M) (int64, error) {
	total, err := coll(nil).Count(cond)
	if err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "getListCnt", table, "Count", err),
			log.Any("cond", cond),
		)
		return 0, err
	}
	return total, nil
}

// GetSkipSize 计算跳转
func getSkipSize(page, size uint64, cond bson.M) (uint64, int64, error) {
	total, err := getListCnt(cond)
	if err != nil {
		return 0, 0, err
	}
	return (page - 1) * size, total, nil
}

// GetUserReco 获取推荐用户
func GetUserReco(page, size uint64, isWeb bool) ([]UserReco, int64, error) {
	var datas []UserReco
	cond := bson.M{}
	if !isWeb {
		cond = bson.M{"active": true}
	}
	sort := bson.D{{Key: "sortKey", Value: -1}, {Key: "createdAt", Value: -1}}
	skip, total, err := getSkipSize(page, size, cond)
	if err != nil {
		return datas, total, err
	}
	opts := options.FindOptions{}
	opts.SetSort(sort).SetSkip(int64(skip)).SetLimit(int64(size))
	if err = coll(nil).Find(&datas, cond, &opts); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "GetUserReco", table, "Find", err),
			log.Any("page", page),
			log.Any("size", size),
			log.Any("isWeb", isWeb),
		)
	}
	return datas, total, err
}

// AddUserReco 添加一个推荐用户
func AddUserReco(uid uint64, sortKey int, active bool) error {
	now := time.Now()
	reco := UserReco{
		UID:       uid,
		SortKey:   sortKey,
		Active:    active,
		UpdatedAt: now,
		CreatedAt: now,
	}
	if _, err := coll(nil).InsertOne(&reco); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "AddUserReco", table, "InsertOne", err),
			log.Any("uid", uid),
			log.Any("sortKey", sortKey),
			log.Any("active", active),
		)
		return err
	}
	return nil
}

func getRecoUpdate(uid *uint64, sortKey *int, active *bool) bson.M {
	update := bson.M{"updatedAt": time.Now()}
	if uid != nil {
		update["uid"] = *uid
	}
	if sortKey != nil {
		update["sortKey"] = *sortKey
	}
	if active != nil {
		update["active"] = *active
	}
	return update
}

// ModifyUserReco 修改推荐用户信息
func ModifyUserReco(id primitive.ObjectID, uid *uint64, sortKey *int, active *bool) error {
	cond := bson.M{"_id": id}
	update := getRecoUpdate(uid, sortKey, active)
	if _, err := coll(nil).UpdateOne(cond, bson.M{"$set": update}); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "ModifyUserReco", table, "UpdateOne", err),
			log.Any("id", id),
			log.Any("uid", uid),
			log.Any("sortKey", sortKey),
			log.Any("active", active),
		)
		return err
	}
	return nil
}

// RemoveUserReco 删除推荐用户信息
func RemoveUserReco(id primitive.ObjectID) error {
	cond := bson.M{"_id": id}
	if _, err := coll(nil).DeleteOne(cond); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "RemoveUserReco", table, "DeleteOne", err),
			log.Any("id", id),
		)
		return err
	}
	return nil
}