package l_encrypt

import (
	"fmt"
	"gitea.cdlsxd.cn/self-tools/l_crypt/encrypt_way/sm2"
)

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

func (r *SM2) Encrypt(data string) (encryptData []byte, err error) {

	if r.App.MerchantPublicKey == "" {
		return nil, fmt.Errorf("密钥缺失")
	}

	encryptDataString, err := sm2.SM2Encrypt(data, r.App.MerchantPublicKey)
	if err != nil {
		return nil, fmt.Errorf("加密失败")
	}
	encryptData = []byte(encryptDataString)
	return
}

func (r *SM2) Decrypt(encryptData string) (decryptData []byte, err error) {
	defer func() {
		if e := recover(); e != nil {
			err = fmt.Errorf("解密失败")
		}
	}()
	if r.App.PrivateKey == "" || r.App.PublicKey == "" {
		return nil, fmt.Errorf("密钥缺失")
	}

	decryptDataString, err := sm2.SM2Decrypt(encryptData, r.App.PublicKey, r.App.PrivateKey)
	if err != nil {
		return nil, fmt.Errorf("解密失败")
	}
	decryptData = []byte(decryptDataString)
	return
}