package apicrypt

import (
	"PaymentCenter/app/constants/errorcode"
	"PaymentCenter/app/models/appmodel"
	"PaymentCenter/app/utils/encrypt/sm2"
)

func NewSm2(app *appmodel.App) ApiCrypt {
	return &SM2{
		App: app,
	}
}

func (r *SM2) Encrypt(data string) (encryptData []byte, errCode int) {

	if r.App.MerchantPublicKey == "" {
		return nil, errorcode.AppSM2EncryptKeyNotFound
	}

	encryptDataString, err := sm2.SM2Encrypt(data, r.App.MerchantPublicKey)
	if err != nil {
		return nil, errorcode.AppSM2EncryptFail
	}
	encryptData = []byte(encryptDataString)
	return
}

func (r *SM2) Decrypt(encryptData string) (decryptData []byte, errCode int) {
	if r.App.PrivateKey == "" || r.App.PublicKey == "" {
		return nil, errorcode.AppSM2DecryptKeyNotFound
	}

	decryptDataString, err := sm2.SM2Decrypt(encryptData, r.App.PublicKey, r.App.PrivateKey)
	if err != nil {
		return nil, errorcode.AppSM2DecryptFail
	}
	decryptData = []byte(decryptDataString)
	return
}