/*
 * Copyright 2025 The Project Oak Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef CC_UTILS_VARIANT_VARIANT_H_
#define CC_UTILS_VARIANT_VARIANT_H_

#include <optional>

#include "proto/variant.pb.h"

namespace oak {

// Converts a proto message to a Variant proto.
// Compiles as long as we have UUID coverage for message type T.
template <typename T>
Variant ToVariant(const T& message);

// Converts a Variant proto to a proto message.
// Returns empty whenever `variant` does not contain type T.
template <typename T>
std::optional<T> FromVariant(const Variant& variant);

}  // namespace oak

#endif  // CC_UTILS_VARIANT_VARIANT_H_
