package videodiscountmod

import (
	"encoding/json"
	"errors"
	"fmt"
	"strconv"
	"time"

	"91porn-server/app/appg"
	"91porn-server/common/constant/redisconst"
	"91porn-server/common/db"
	"91porn-server/common/log"
	"91porn-server/common/redis"
	"91porn-server/models"
	"91porn-server/skd/skdg"
	"91porn-server/web/webg"

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

const table = models.VideoDiscount

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

// InitIndex 设置index
func initIndex() {
	coll := coll(nil)
	many := []mongo.IndexModel{
		{
			Keys:    bson.D{{Key: "uid", Value: 1}},
			Options: options.Index().SetUnique(true),
		},
		{
			Keys: bson.D{{Key: "expiration", Value: 1}},
		},
	}
	if _, err := coll.CreateIndex(many); err != nil {
		panic(fmt.Sprintf("%s model set index err ==>[%+v]", table, err))
	}
}

func RefreshDiscountCache(uid uint64) {
	redisCachDel(uid)
	if _, err := GetByUID(uid); err != nil {
		log.Error("RefreshDiscountCache", log.Any("uid", uid), log.E(err))
	}
}

func redisCachDel(uid uint64) {
	redisKey := redisconst.DataCachKey(table, strconv.FormatUint(uid, 10))
	if _, err := getRedis().Del(redisKey); err != nil {
		log.Error("redis del user, ", log.Any("err:", err.Error()), log.Any("uid:", uid))
	}
}

func getRedis() *redis.Client {
	if appg.Redis != nil {
		return appg.Redis
	}
	if webg.Redis != nil {
		return webg.Redis
	}
	if skdg.Redis != nil {
		return skdg.Redis
	}
	return nil
}

// GetByUID 获取用户购买视频折扣卡记录（设置了缓存！）
func GetByUID(uid uint64) (discount VideoDiscountLog, err error) {
	redisKey := redisconst.DataCachKey(table, strconv.FormatUint(uid, 10))
	redisc := appg.Redis
	if redisc == nil || !redisc.Exists(redisKey) {
		f := bson.M{"uid": uid}
		if err = coll(nil).FindOne(&discount, f); err != nil {
			log.Error("GetByUID", log.Any("uid", uid), log.E(err))
			return
		}
		if discount.UID == 0 {
			return
		}
		jsonBytes, err := json.Marshal(discount)
		if err != nil {
			return discount, err
		}
		_ = redisc.Set(redisKey, string(jsonBytes), redisconst.DataCachExpire)
		return discount, err
	}
	str, err := redisc.Get(redisKey)
	if err != nil {
		return discount, err
	}
	if str == nil {
		return discount, errors.New("redis key is null")
	}
	err = json.Unmarshal([]byte(*str), &discount)
	return
}

// GetByUIDAndWeb 获取用户购买视频折扣卡记录（web后台使用, 不用redis）
func GetByUIDAndWeb(uid uint64) (discount VideoDiscountLog, err error) {
	f := bson.M{"uid": uid}
	if err = coll(nil).FindOne(&discount, f); err != nil {
		log.Error("GetByUIDAndWeb", log.Any("uid", uid), log.E(err))
		return
	}
	if discount.UID == 0 {
		return
	}
	return discount, err
}

func Upsert(t *db.MongoTool, set *EditSelector) (err error) {
	defer RefreshDiscountCache(*set.UID)
	set.UpdatedAt = time.Now()
	res, err := coll(t).UpsertOne(
		bson.M{"uid": set.UID},
		bson.M{
			"$set": set,
			"$setOnInsert": bson.M{
				"createdAt": set.UpdatedAt,
			},
		},
	)
	if err != nil {
		log.Error("Upsert", log.Any("set", set), log.E(err))
		return
	}
	if res.ModifiedCount+res.UpsertedCount < 1 {
		err = errors.New("upsert fail")
		log.Warn("Upsert", log.Any("set", set), log.Any("res", res))
	}
	return
}