/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 * Copyright (C) 2017 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:
 *
 *     * 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,
 * 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 <optional>
#include <wtf/Forward.h>

namespace WebCore {

enum class ReferrerPolicy : uint8_t {
    EmptyString,
    NoReferrer,
    NoReferrerWhenDowngrade,
    SameOrigin,
    Origin,
    StrictOrigin,
    OriginWhenCrossOrigin,
    StrictOriginWhenCrossOrigin,
    UnsafeUrl,
    Default = StrictOriginWhenCrossOrigin
};

enum class ReferrerPolicySource : uint8_t { MetaTag, HTTPHeader, ReferrerPolicyAttribute };
std::optional<ReferrerPolicy> parseReferrerPolicy(StringView, ReferrerPolicySource);
String referrerPolicyToString(const ReferrerPolicy&);

}

namespace WTF {

template<> struct EnumTraitsForPersistence<WebCore::ReferrerPolicy> {
    using values = EnumValues<
        WebCore::ReferrerPolicy,
        WebCore::ReferrerPolicy::EmptyString,
        WebCore::ReferrerPolicy::NoReferrer,
        WebCore::ReferrerPolicy::NoReferrerWhenDowngrade,
        WebCore::ReferrerPolicy::SameOrigin,
        WebCore::ReferrerPolicy::Origin,
        WebCore::ReferrerPolicy::StrictOrigin,
        WebCore::ReferrerPolicy::OriginWhenCrossOrigin,
        WebCore::ReferrerPolicy::StrictOriginWhenCrossOrigin,
        WebCore::ReferrerPolicy::UnsafeUrl
    >;
};

}
