/*
 * Copyright (C) 2006-2025 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. ``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
 * 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 <WebCore/ResourceResponseBase.h>
#include <wtf/RetainPtr.h>
#include <wtf/TZoneMalloc.h>

OBJC_CLASS NSURLResponse;

namespace WebCore {

class ResourceResponse : public ResourceResponseBase {
    WTF_MAKE_TZONE_ALLOCATED_EXPORT(ResourceResponse, WEBCORE_EXPORT);
public:
    ResourceResponse()
    {
        m_initLevel = AllFields;
    }
    
    ResourceResponse(ResourceResponseBase&& base)
        : ResourceResponseBase(WTF::move(base))
    {
        m_initLevel = AllFields;
    }

    ResourceResponse(NSURLResponse *nsResponse)
        : m_nsResponse(nsResponse)
    {
        m_initLevel = Uninitialized;
        m_isNull = !nsResponse;
    }

    ResourceResponse(URL&& url, String&& mimeType, long long expectedLength, String&& textEncodingName)
        : ResourceResponseBase(WTF::move(url), WTF::move(mimeType), expectedLength, WTF::move(textEncodingName))
    {
        m_initLevel = AllFields;
    }

    // FIXME(rdar://149970210): Remove this constructor once the internal build is up-to-date
    ResourceResponse(const URL& url, String&& mimeType, long long expectedLength, String&& textEncodingName)
        : ResourceResponseBase(URL { url }, WTF::move(mimeType), expectedLength, WTF::move(textEncodingName))
    {
        m_initLevel = AllFields;
    }

    WEBCORE_EXPORT void disableLazyInitialization();

    unsigned memoryUsage() const
    {
        // FIXME: Find some programmatic lighweight way to calculate ResourceResponse and associated classes.
        // This is a rough estimate of resource overhead based on stats collected from memory usage tests.
        return 3800;
        /*  1280 * 2 +                // average size of ResourceResponse. Doubled to account for the WebCore copy and the CF copy.
                                      // Mostly due to the size of the hash maps, the Header Map strings and the URL.
            256 * 2                   // Overhead from ResourceRequest, doubled to account for WebCore copy and CF copy.
                                      // Mostly due to the URL and Header Map.
         */
    }

    WEBCORE_EXPORT NSURLResponse *nsURLResponse() const;
    WEBCORE_EXPORT RetainPtr<NSURLResponse> protectedNSURLResponse() const;

#if USE(QUICK_LOOK)
    bool isQuickLook() const { return m_isQuickLook; }
    void setIsQuickLook(bool isQuickLook) { m_isQuickLook = isQuickLook; }
#endif

    void initNSURLResponse() const;

private:
    friend class ResourceResponseBase;

    void platformLazyInit(InitLevel);
    String platformSuggestedFilename() const;
    CertificateInfo platformCertificateInfo(std::span<const std::byte>) const;

    static bool platformCompare(const ResourceResponse& a, const ResourceResponse& b);

    mutable RetainPtr<NSURLResponse> m_nsResponse;

#if USE(QUICK_LOOK)
    bool m_isQuickLook { false };
#endif
};

} // namespace WebCore
