package client

import (
	"encoding/json"
	"errors"
	"git.selly.red/Selly-Modules/natsio"
	"git.selly.red/Selly-Modules/natsio/model"
	"git.selly.red/Selly-Modules/natsio/subject"
)

type Promotion struct{}

func GetPromotion() Promotion {
	return Promotion{}
}

func (s Promotion) GenerateVoucherPromotion(p model.GenerateVoucherPromotionRequest) (*model.ResponseGenerateVoucherPromotion, error) {
	msg, err := natsio.GetServer().Request(subject.Promotion.GenerateVoucherPromotion, toBytes(p))
	if err != nil {
		return nil, err
	}

	var r struct {
		Data  *model.ResponseGenerateVoucherPromotion `json:"data"`
		Error string                                  `json:"error"`
	}

	if err = json.Unmarshal(msg.Data, &r); err != nil {
		return nil, err
	}

	if r.Error != "" {
		return nil, errors.New(r.Error)
	}

	return r.Data, nil
}