package locmod

import (
	"fmt"
	"time"

	"91porn-server/common"
	"91porn-server/common/db"
	"91porn-server/common/log"
	"91porn-server/common/pageopt"
	"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"
)

// M M from Map
type M = bson.M

// ObjectID ObjectID
type ObjectID = primitive.ObjectID

var mdb *db.MongoDB

const table = models.HotCity

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

// initIndexHot 设置index
func initIndexHot() {
	many := []mongo.IndexModel{
		{
			Keys:    bson.D{{Key: "city", Value: 1}},
			Options: options.Index().SetUnique(true),
		},
		{
			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))
	}
}

// GetHotCity 获取热门城市
func GetHotCity() ([]HotCity, error) {
	var back []HotCity
	if err := coll(nil).Find(&back, bson.M{"enable": true}); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "GetHotCity", table, "Find", err))
		return nil, err
	}
	return back, nil
}

// Insert 插入记录
func Insert(doc HotCityDoc) error {
	now := time.Now()
	doc.CreatedAt = &now
	doc.UpdatedAt = &now
	if _, err := coll(nil).InsertOne(doc); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "Insert", table, "InsertOne", err))
		return err
	}
	return nil
}

// UpdateTo UpdateTo
func UpdateTo(id ObjectID, doc HotCityDoc) error {
	now := time.Now()
	doc.UpdatedAt = &now
	update, err := common.ToBsonM(doc)
	if err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "UpdateTo", table, "ToBsonM", err),
			log.Any("id", id),
			log.Any("doc", doc),
		)
		return err
	}
	result, err := coll(nil).UpdateOne(M{"_id": id}, bson.M{"$set": update})
	if err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "UpdateTo", table, "UpdateOne", err),
			log.Any("id", id),
			log.Any("doc", doc),
		)
		return err
	}
	if result.ModifiedCount+result.UpsertedCount != 1 {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "UpdateTo", table, "UpdateOne", err),
			log.Any("id", id),
			log.Any("doc", doc),
			log.Any("mCount", result.ModifiedCount),
			log.Any("uCount", result.UpsertedCount),
		)
		return fmt.Errorf("wrong update count")
	}
	return nil
}

// DeleteMany DeleteMany
func DeleteMany(idArray []ObjectID) error {
	if idArray == nil {
		idArray = []ObjectID{}
	}
	if _, err := coll(nil).DeleteMany(M{"_id": M{"$in": idArray}}); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "DeleteMany", table, "DeleteMany", err), log.Any("idArray", idArray))
		return err
	}
	return nil
}

// HotCityPages 热门城市
func HotCityPages(sort bson.D, skip int64, limit int64, matchs ...pageopt.Matcher) (HotCityPage, error) {
	pipeline := []bson.M{
		{"$match": pageopt.MergeM(matchs)},
		{
			"$facet": bson.M{
				"total": bson.A{bson.M{"$count": "total"}},
				"list": bson.A{
					bson.M{"$sort": sort},
					bson.M{"$skip": skip},
					bson.M{"$limit": limit},
				},
			},
		},
		{
			"$project": bson.M{
				"total": bson.M{"$arrayElemAt": bson.A{"$total.total", 0}},
				"list":  1,
			},
		},
	}
	var page HotCityPage
	if err := coll(nil).AggregateDecode(&page, pipeline); err != nil {
		log.Error(fmt.Sprintf("[METHOD-%s]==> Model %s %s fail error:%+v:", "HotCityPages", table, "AggregateDecode", err),
			log.Any("sort", sort),
			log.Any("matchs", matchs),
		)
		return page, err
	}
	return page, nil
}