/*
 * Copyright (C) 2008-2017 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:
 * 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 <JavaScriptCore/RuntimeFlags.h>
#include <WebCore/ContentSecurityPolicyResponseHeaders.h>
#include <WebCore/CrossOriginEmbedderPolicy.h>
#include <WebCore/FetchRequestCredentials.h>
#include <WebCore/NotificationPermission.h>
#include <WebCore/ScriptExecutionContextIdentifier.h>
#include <WebCore/ServiceWorkerRegistrationData.h>
#include <WebCore/Settings.h>
#include <WebCore/WorkerClient.h>
#include <WebCore/WorkerOrWorkletThread.h>
#include <WebCore/WorkerRunLoop.h>
#include <WebCore/WorkerType.h>
#include <memory>
#include <pal/SessionID.h>
#include <wtf/CheckedPtr.h>
#include <wtf/URL.h>

namespace WebCore {

class NotificationClient;
class Page;
class ScriptBuffer;
class SecurityOrigin;
class SocketProvider;
class WorkerBadgeProxy;
class WorkerGlobalScope;
class WorkerLoaderProxy;
class WorkerDebuggerProxy;
class WorkerReportingProxy;

enum class WorkerThreadStartMode {
    Normal,
    WaitForInspector,
};

namespace IDBClient {
class IDBConnectionProxy;
}

enum class AdvancedPrivacyProtections : uint16_t;

struct WorkerThreadStartupData;

struct WorkerParameters {
public:
    URL scriptURL;
    URL ownerURL;
    String name;
    String inspectorIdentifier;
    String userAgent;
    bool isOnline;
    ContentSecurityPolicyResponseHeaders contentSecurityPolicyResponseHeaders;
    bool shouldBypassMainWorldContentSecurityPolicy;
    CrossOriginEmbedderPolicy crossOriginEmbedderPolicy;
    MonotonicTime timeOrigin;
    ReferrerPolicy referrerPolicy;
    WorkerType workerType;
    FetchRequestCredentials credentials;
    SettingsValues settingsValues;
    WorkerThreadMode workerThreadMode { WorkerThreadMode::CreateNewThread };
    PAL::SessionID sessionID;
    std::optional<ServiceWorkerData> serviceWorkerData;
    Markable<ScriptExecutionContextIdentifier> clientIdentifier;
    OptionSet<AdvancedPrivacyProtections> advancedPrivacyProtections;
    std::optional<uint64_t> noiseInjectionHashSalt;

    WorkerParameters isolatedCopy() const;
};

class WorkerThread : public WorkerOrWorkletThread {
public:
    virtual ~WorkerThread();

    WorkerBadgeProxy* workerBadgeProxy() const { return m_workerBadgeProxy.get(); }
    WorkerDebuggerProxy* workerDebuggerProxy() const final { return m_workerDebuggerProxy.get(); }
    WorkerLoaderProxy* workerLoaderProxy() const final { return m_workerLoaderProxy.get(); }
    WorkerReportingProxy* workerReportingProxy() const { return m_workerReportingProxy.get(); }

    // Number of active worker threads.
    WEBCORE_EXPORT static unsigned workerThreadCount();

    JSC::RuntimeFlags runtimeFlags() const { return m_runtimeFlags; }
    bool isInStaticScriptEvaluation() const { return m_isInStaticScriptEvaluation; }

    void clearProxies() override;

    void setWorkerClient(std::unique_ptr<WorkerClient> client) { m_workerClient = WTFMove(client); }
protected:
    WorkerThread(const WorkerParameters&, const ScriptBuffer& sourceCode, WorkerLoaderProxy&, WorkerDebuggerProxy&, WorkerReportingProxy&, WorkerBadgeProxy&, WorkerThreadStartMode, const SecurityOrigin& topOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, JSC::RuntimeFlags);

    // Factory method for creating a new worker context for the thread.
    virtual Ref<WorkerGlobalScope> createWorkerGlobalScope(const WorkerParameters&, Ref<SecurityOrigin>&&, Ref<SecurityOrigin>&& topOrigin) = 0;

    WorkerGlobalScope* globalScope();

    IDBClient::IDBConnectionProxy* idbConnectionProxy() { return m_idbConnectionProxy.get(); }
    SocketProvider* socketProvider() { return m_socketProvider.get(); }

    std::unique_ptr<WorkerClient> m_workerClient;
private:
    virtual ASCIILiteral threadName() const = 0;

    virtual void finishedEvaluatingScript() { }
    bool isWorkerThread() const final { return true; }

    // WorkerOrWorkletThread.
    Ref<Thread> createThread() final;
    RefPtr<WorkerOrWorkletGlobalScope> createGlobalScope() final;
    void evaluateScriptIfNecessary(String& exceptionMessage) final;
    bool shouldWaitForWebInspectorOnStartup() const final;

    CheckedPtr<WorkerLoaderProxy> m_workerLoaderProxy;
    CheckedPtr<WorkerDebuggerProxy> m_workerDebuggerProxy;
    CheckedPtr<WorkerReportingProxy> m_workerReportingProxy;
    CheckedPtr<WorkerBadgeProxy> m_workerBadgeProxy;
    JSC::RuntimeFlags m_runtimeFlags;

    std::unique_ptr<WorkerThreadStartupData> m_startupData;

    const RefPtr<IDBClient::IDBConnectionProxy> m_idbConnectionProxy;
    const RefPtr<SocketProvider> m_socketProvider;
    bool m_isInStaticScriptEvaluation { false };
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::WorkerThread)
    static bool isType(const WebCore::WorkerOrWorkletThread& thread) { return thread.isWorkerThread(); }
SPECIALIZE_TYPE_TRAITS_END()
