/*
 * Copyright (C) 2013 Google 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER OR 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,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef CryptoKey_h
#define CryptoKey_h

#include "bindings/core/v8/ScriptWrappable.h"
#include "modules/crypto/NormalizeAlgorithm.h"
#include "platform/heap/Handle.h"
#include "public/platform/WebCryptoKey.h"
#include "wtf/Forward.h"
#include "wtf/text/WTFString.h"

namespace blink {

class CryptoResult;
class KeyAlgorithm;

class CryptoKey : public GarbageCollectedFinalized<CryptoKey>, public ScriptWrappable {
    DEFINE_WRAPPERTYPEINFO();
public:
    static CryptoKey* create(const WebCryptoKey& key)
    {
        return new CryptoKey(key);
    }

    ~CryptoKey();

    String type() const;
    bool extractable() const;
    Vector<String> usages() const;

    const WebCryptoKey& key() const { return m_key; }

    // If the key cannot be used with the indicated algorithm, returns false
    // and completes the CryptoResult with an error.
    bool canBeUsedForAlgorithm(const WebCryptoAlgorithm&, WebCryptoOperation, CryptoResult*) const;

    // On failure, these return false and complete the CryptoResult with an error.
    static bool parseFormat(const String&, WebCryptoKeyFormat&, CryptoResult*);
    static bool parseUsageMask(const Vector<String>&, WebCryptoKeyUsageMask&, CryptoResult*);

    void trace(Visitor*) { }

protected:
    explicit CryptoKey(const WebCryptoKey&);

    const WebCryptoKey m_key;
};

} // namespace blink

#endif // CryptoKey_h