refactor: Update Save method to handle base64 encoded secrets

The Save method in the SecretHandler struct is updated to handle base64 encoded secrets. If the decodeBase64EncodedSecret flag is set to true, the secret is decoded from base64 and then saved to the specified file. This allows for more flexibility in handling secrets that are stored in base64 format.

handler/handler.go

@@ -55,24 +55,24 @@ func (handler *SecretHandler) Save(secretID, path string, decodeBase64EncodedSec
 		return handler.template.Execute(file, m)
 	}
 
-	var (
-		buff          bytes.Buffer
-		decodedSecret []byte
-	)
-
 	// execute template
+	var buff bytes.Buffer
 	err = handler.template.Execute(&buff, m)
 	if err != nil {
 		return err
 	}
 
 	// decode base64 encoded secret
-	decodedSecret, err = util.DecodeBase64StrToBytes(buff.String())
+	decodedSecret, err := util.DecodeBase64BytesToBytes(buff.Bytes())
 	if err != nil {
 		return err
 	}
 
 	// write decoded secret to file
 	_, err = file.Write(decodedSecret)
-	return err
+	if err != nil {
+		return err
+	}
+
+	return nil
 }