/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * 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:
 *
 *     * 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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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "DedicatedWorkerGlobalScope.h"

#include "ContentSecurityPolicyResponseHeaders.h"
#include "DOMWindow.h"
#include "DedicatedWorkerThread.h"
#include "EventNames.h"
#include "JSRTCRtpScriptTransformer.h"
#include "MessageEvent.h"
#include "RTCTransformEvent.h"
#include "RequestAnimationFrameCallback.h"
#include "SecurityOrigin.h"
#include "Worker.h"
#if ENABLE(OFFSCREEN_CANVAS)
#include "WorkerAnimationController.h"
#endif
#include "WorkerObjectProxy.h"
#include <wtf/IsoMallocInlines.h>

namespace WebCore {

WTF_MAKE_ISO_ALLOCATED_IMPL(DedicatedWorkerGlobalScope);

Ref<DedicatedWorkerGlobalScope> DedicatedWorkerGlobalScope::create(const WorkerParameters& params, Ref<SecurityOrigin>&& origin, DedicatedWorkerThread& thread, Ref<SecurityOrigin>&& topOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider)
{
    auto context = adoptRef(*new DedicatedWorkerGlobalScope(params, WTFMove(origin), thread, WTFMove(topOrigin), connectionProxy, socketProvider));
    if (!params.shouldBypassMainWorldContentSecurityPolicy)
        context->applyContentSecurityPolicyResponseHeaders(params.contentSecurityPolicyResponseHeaders);
    return context;
}

DedicatedWorkerGlobalScope::DedicatedWorkerGlobalScope(const WorkerParameters& params, Ref<SecurityOrigin>&& origin, DedicatedWorkerThread& thread, Ref<SecurityOrigin>&& topOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider)
    : WorkerGlobalScope(WorkerThreadType::DedicatedWorker, params, WTFMove(origin), thread, WTFMove(topOrigin), connectionProxy, socketProvider)
    , m_name(params.name)
{
}

DedicatedWorkerGlobalScope::~DedicatedWorkerGlobalScope() = default;

EventTargetInterface DedicatedWorkerGlobalScope::eventTargetInterface() const
{
    return DedicatedWorkerGlobalScopeEventTargetInterfaceType;
}

void DedicatedWorkerGlobalScope::prepareForDestruction()
{
    WorkerGlobalScope::prepareForDestruction();
}

ExceptionOr<void> DedicatedWorkerGlobalScope::postMessage(JSC::JSGlobalObject& state, JSC::JSValue messageValue, PostMessageOptions&& options)
{
    Vector<RefPtr<MessagePort>> ports;
    auto message = SerializedScriptValue::create(state, messageValue, WTFMove(options.transfer), ports, SerializationContext::WorkerPostMessage);
    if (message.hasException())
        return message.releaseException();

    // Disentangle the port in preparation for sending it to the remote context.
    auto channels = MessagePort::disentanglePorts(WTFMove(ports));
    if (channels.hasException())
        return channels.releaseException();

    thread().workerObjectProxy().postMessageToWorkerObject({ message.releaseReturnValue(), channels.releaseReturnValue() });
    return { };
}

ExceptionOr<void> DedicatedWorkerGlobalScope::importScripts(const Vector<String>& urls)
{
    auto result = Base::importScripts(urls);
    thread().workerObjectProxy().reportPendingActivity(hasPendingActivity());
    return result;
}

DedicatedWorkerThread& DedicatedWorkerGlobalScope::thread()
{
    return static_cast<DedicatedWorkerThread&>(Base::thread());
}

#if ENABLE(OFFSCREEN_CANVAS)
CallbackId DedicatedWorkerGlobalScope::requestAnimationFrame(Ref<RequestAnimationFrameCallback>&& callback)
{
    if (!m_workerAnimationController)
        m_workerAnimationController = WorkerAnimationController::create(*this);
    return m_workerAnimationController->requestAnimationFrame(WTFMove(callback));
}

void DedicatedWorkerGlobalScope::cancelAnimationFrame(CallbackId callbackId)
{
    if (m_workerAnimationController)
        m_workerAnimationController->cancelAnimationFrame(callbackId);
}
#endif

#if ENABLE(WEB_RTC)
RefPtr<RTCRtpScriptTransformer> DedicatedWorkerGlobalScope::createRTCRtpScriptTransformer(MessageWithMessagePorts&& options)
{
    auto transformerOrException = RTCRtpScriptTransformer::create(*this, WTFMove(options));
    if (transformerOrException.hasException())
        return nullptr;
    auto transformer = transformerOrException.releaseReturnValue();
    dispatchEvent(RTCTransformEvent::create(eventNames().rtctransformEvent, transformer.copyRef(), Event::IsTrusted::Yes));
    return transformer;
}
#endif

} // namespace WebCore