package activitySer

import (
	"context"
	"fmt"
	"strings"
	"time"

	"stat/api/proto"
	"stat/common/gencode"
	"stat/common/stdLog"
	"stat/models/activitymod"

	"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"
)

// 生成活动奖品兑换码
func GenManyGiftCode(ctx context.Context, param proto.GenGiftCodeRes) (stdLog.CodeType, error) {
	now := time.Now()
	filter := bson.M{activitymod.FN.LotteryGift.Id: param.GiftId}
	info, err := activitymod.FindOneLotteryGift(ctx, filter)
	if err != nil {
		return stdLog.QueryDataError, err
	}
	doc := &activitymod.LotteryGetGift{
		ActId:     info.ActId,
		ActName:   info.ActName,
		GiftId:    info.Id.Hex(),
		GiftName:  info.GiftName,
		CreatedAt: now,
	}
	for i := 0; i < int(param.CodeNum); i++ {
		code, err := genGiftCode(ctx, int(param.CodeLen))
		if err != nil {
			return stdLog.Failure, err
		}
		doc.GiftCode = code
		doc.Id = primitive.NewObjectID()
		if err = activitymod.InsertOneLotteryGetGift(ctx, doc); err != nil {
			return stdLog.InsertDataError, err
		}
	}
	return stdLog.Success, nil
}

func genGiftCode(ctx context.Context, len int) (string, error) {
	// 生成码
	for {
		code := strings.ToUpper(gencode.CodeGenerate(len))
		filter := bson.M{activitymod.FN.LotteryGetGift.GiftCode: code}
		_, err := activitymod.FindOneLotteryGetGift(ctx, filter)
		if err != nil {
			if err != mongo.ErrNoDocuments {
				return "", err
			}
			return code, nil
		}
	}
}

// 修改奖品兑换信息
func UpdateOneRecvGiftInfo(ctx context.Context, param *proto.UpdateGetGiftReq) (stdLog.CodeType, error) {
	now := time.Now()
	if param.GiftCode == "" {
		return stdLog.ParamError, fmt.Errorf("giftcode param err")
	}
	filter := bson.M{
		activitymod.FN.LotteryGetGift.Id:       param.Id,
		activitymod.FN.LotteryGetGift.GiftCode: param.GiftCode,
	}
	doc := bson.M{}
	if param.UserId == nil || *param.UserId == "" {
		return stdLog.ParamError, fmt.Errorf("userId can not be nil")
	} else {
		doc[activitymod.FN.LotteryGetGift.UserId] = *param.UserId
	}
	if param.AppName == nil || *param.AppName == "" {
		return stdLog.ParamError, fmt.Errorf("appName can not be nil")
	} else {
		doc[activitymod.FN.LotteryGetGift.AppName] = *param.AppName
	}
	if param.Remark != nil {
		doc[activitymod.FN.LotteryGetGift.Remark] = *param.Remark
	}
	doc[activitymod.FN.LotteryGetGift.GetGiftAt] = now
	doc[activitymod.FN.LotteryGetGift.UpdatedAt] = now
	doc[activitymod.FN.LotteryGetGift.IsUsed] = true
	updateDoc := bson.M{"$set": doc}
	err := activitymod.UpdateOneLotteryGetGift(ctx, filter, updateDoc)
	if err != nil {
		return stdLog.UpdateDataError, err
	}
	return stdLog.Success, nil
}

// 删除一个活动奖品兑换信息
func DelOneRecvGiftInfo(ctx context.Context, param proto.DelGetGiftReq) (stdLog.CodeType, error) {
	filter := bson.M{activitymod.FN.LotteryGetGift.Id: param.Id}
	count, err := activitymod.DelOneLotteryGetGift(ctx, filter)
	if err != nil {
		return stdLog.UpdateDataError, err
	}
	if count == 0 {
		return stdLog.DataNotExist, nil
	}

	return stdLog.Success, nil
}

// 奖品兑换详情列表
func GetReceiveGiftInfoList(ctx context.Context, param proto.GetGiftInfoReq) (stdLog.CodeType, *proto.GetGiftInfoResp, error) {
	if param.PageSize <= 0 {
		param.PageSize = 10
	}
	if param.PageNum <= 0 {
		param.PageNum = 1
	}
	data := &proto.GetGiftInfoResp{List: make(activitymod.LotteryGetGiftList, 0)}
	filter := bson.M{}
	if param.LotteryCode != nil {
		filter[activitymod.FN.LotteryGetGift.LotteryCode] = *param.LotteryCode
	}
	if param.ActId != nil {
		filter[activitymod.FN.LotteryGetGift.ActId] = bson.M{"$regex": *param.ActId}
	}
	if param.ActName != nil {
		filter[activitymod.FN.LotteryGetGift.ActName] = bson.M{"$regex": *param.ActName}
	}
	if param.GiftId != nil {
		filter[activitymod.FN.LotteryGetGift.GiftId] = bson.M{"$regex": *param.GiftId}
	}
	if param.GiftName != nil {
		filter[activitymod.FN.LotteryGetGift.GiftName] = *param.GiftName
	}
	if param.UserId != nil {
		filter[activitymod.FN.LotteryGetGift.UserId] = *param.UserId
	}
	if param.AppName != nil {
		filter[activitymod.FN.LotteryGetGift.AppName] = *param.AppName
	}
	if param.IsUsed != nil {
		filter[activitymod.FN.LotteryGetGift.IsUsed] = *param.IsUsed
	}
	if param.GiftCode != nil {
		filter[activitymod.FN.LotteryGetGift.GiftCode] = *param.GiftCode
	}
	if param.GiftCode != nil {
		filter[activitymod.FN.LotteryGetGift.GiftCode] = *param.GiftCode
	}
	if param.IsGaveOut != nil {
		filter[activitymod.FN.LotteryGetGift.IsGaveOut] = *param.IsGaveOut
	}
	count, err := activitymod.CountLotteryGetGifts(ctx, filter)
	if err != nil {
		return stdLog.QueryDataError, data, err
	}
	data.Total = count

	opt := &options.FindOptions{}
	skip := (param.PageNum - 1) * param.PageSize
	if param.PageSize <= 0 {
		param.PageSize = 10
	}
	opt.SetSkip(skip)
	opt.SetLimit(param.PageSize)
	opt.SetSort(bson.M{activitymod.FN.LotteryGetGift.CreatedAt: -1})
	if err := activitymod.FindManyLotteryGetGiftWithBind(ctx, &data.List, filter, opt); err != nil {
		return stdLog.QueryDataError, data, err
	}
	return stdLog.Success, data, nil
}