/*
 * Copyright (C) 2016 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include "BufferSource.h"
#include "CryptoAlgorithmParameters.h"
#include <wtf/Vector.h>

#if ENABLE(SUBTLE_CRYPTO)

namespace WebCore {

class CryptoAlgorithmRsaOaepParams final : public CryptoAlgorithmParameters {
public:
    // Use labelVector() instead of label. The label will be gone once labelVector() is called.
    std::optional<BufferSource::VariantType> label;

    Class parametersClass() const final { return Class::RsaOaepParams; }

    const Vector<uint8_t>& labelVector()
    {
        if (!m_labelVector.isEmpty() || !label)
            return m_labelVector;

        m_labelBuffer = WTFMove(*label);
        label = std::nullopt;
        if (!m_labelBuffer.length())
            return m_labelVector;

        m_labelVector.append(m_labelBuffer.data(), m_labelBuffer.length());
        return m_labelVector;
    }

private:
    Vector<uint8_t> m_labelVector;
    BufferSource m_labelBuffer;
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_CRYPTO_ALGORITHM_PARAMETERS(RsaOaepParams)

#endif // ENABLE(SUBTLE_CRYPTO)