/*
 * Copyright (C) 2013 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.
 */

#include "config.h"
#include "APIWebArchive.h"

#if PLATFORM(COCOA)

#include "APIArray.h"
#include "APIData.h"
#include "APIWebArchiveResource.h"
#include <WebCore/LegacyWebArchive.h>
#include <wtf/RetainPtr.h>

using namespace WebCore;

namespace API {

Ref<WebArchive> WebArchive::create(WebArchiveResource* mainResource, PassRefPtr<API::Array> subresources, PassRefPtr<API::Array> subframeArchives)
{
    return adoptRef(*new WebArchive(mainResource, subresources, subframeArchives));
}

Ref<WebArchive> WebArchive::create(API::Data* data)
{
    return adoptRef(*new WebArchive(data));
}

Ref<WebArchive> WebArchive::create(PassRefPtr<LegacyWebArchive> legacyWebArchive)
{
    return adoptRef(*new WebArchive(legacyWebArchive));
}

Ref<WebArchive> WebArchive::create(Range* range)
{
    return adoptRef(*new WebArchive(LegacyWebArchive::create(range)));
}

WebArchive::WebArchive(WebArchiveResource* mainResource, PassRefPtr<API::Array> subresources, PassRefPtr<API::Array> subframeArchives)
    : m_cachedMainResource(mainResource)
    , m_cachedSubresources(subresources)
    , m_cachedSubframeArchives(subframeArchives)
{
    RefPtr<ArchiveResource> coreMainResource = m_cachedMainResource->coreArchiveResource();

    Vector<RefPtr<ArchiveResource>> coreArchiveResources;
    coreArchiveResources.reserveInitialCapacity(m_cachedSubresources->size());
    for (size_t i = 0; i < m_cachedSubresources->size(); ++i) {
        RefPtr<WebArchiveResource> resource = m_cachedSubresources->at<WebArchiveResource>(i);
        ASSERT(resource);
        coreArchiveResources.uncheckedAppend(resource->coreArchiveResource());
    }

    Vector<RefPtr<LegacyWebArchive>> coreSubframeLegacyWebArchives;
    coreSubframeLegacyWebArchives.reserveInitialCapacity(m_cachedSubframeArchives->size());

    for (size_t i = 0; i < m_cachedSubframeArchives->size(); ++i) {
        RefPtr<WebArchive> subframeWebArchive = m_cachedSubframeArchives->at<WebArchive>(i);
        ASSERT(subframeWebArchive);
        coreSubframeLegacyWebArchives.uncheckedAppend(subframeWebArchive->coreLegacyWebArchive());
    }

    m_legacyWebArchive = LegacyWebArchive::create(coreMainResource.release(), WTF::move(coreArchiveResources), WTF::move(coreSubframeLegacyWebArchives));
}

WebArchive::WebArchive(API::Data* data)
{
    RefPtr<SharedBuffer> buffer = SharedBuffer::create(data->bytes(), data->size());
    m_legacyWebArchive = LegacyWebArchive::create(buffer.get());
}

WebArchive::WebArchive(PassRefPtr<LegacyWebArchive> legacyWebArchive)
    : m_legacyWebArchive(legacyWebArchive)
{
}

WebArchive::~WebArchive()
{
}

WebArchiveResource* WebArchive::mainResource()
{
    if (!m_cachedMainResource)
        m_cachedMainResource = WebArchiveResource::create(m_legacyWebArchive->mainResource());
    return m_cachedMainResource.get();
}

API::Array* WebArchive::subresources()
{
    if (!m_cachedSubresources) {
        Vector<RefPtr<API::Object>> subresources;
        subresources.reserveInitialCapacity(m_legacyWebArchive->subresources().size());

        for (const auto& subresource : m_legacyWebArchive->subresources())
            subresources.uncheckedAppend(WebArchiveResource::create(subresource));

        m_cachedSubresources = API::Array::create(WTF::move(subresources));
    }

    return m_cachedSubresources.get();
}

API::Array* WebArchive::subframeArchives()
{
    if (!m_cachedSubframeArchives) {
        Vector<RefPtr<API::Object>> subframeWebArchives;
        subframeWebArchives.reserveInitialCapacity(m_legacyWebArchive->subframeArchives().size());

        for (const auto& subframeArchive : m_legacyWebArchive->subframeArchives())
            subframeWebArchives.uncheckedAppend(WebArchive::create(static_cast<LegacyWebArchive*>(subframeArchive.get())));

        m_cachedSubframeArchives = API::Array::create(WTF::move(subframeWebArchives));
    }

    return m_cachedSubframeArchives.get();
}

static void releaseCFData(unsigned char*, const void* data)
{
    // Balanced by CFRetain in WebArchive::data().
    CFRelease(data);
}

Ref<API::Data> WebArchive::data()
{
    RetainPtr<CFDataRef> rawDataRepresentation = m_legacyWebArchive->rawDataRepresentation();

    // Balanced by CFRelease in releaseCFData.
    CFRetain(rawDataRepresentation.get());

    return API::Data::createWithoutCopying(CFDataGetBytePtr(rawDataRepresentation.get()), CFDataGetLength(rawDataRepresentation.get()), releaseCFData, rawDataRepresentation.get());
}

LegacyWebArchive* WebArchive::coreLegacyWebArchive()
{
    return m_legacyWebArchive.get();
}

} // namespace WebKit

#endif // PLATFORM(COCOA)