/*
 * 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.
 */

#pragma once

#include "ResourceError.h"
#include "ResourceHandleClient.h"
#include "ResourceResponse.h"
#include <wtf/Function.h>
#include <wtf/MessageQueue.h>
#include <wtf/ThreadSafeRefCounted.h>

namespace WebCore {

class SynchronousLoaderMessageQueue : public ThreadSafeRefCounted<SynchronousLoaderMessageQueue> {
public:
    static Ref<SynchronousLoaderMessageQueue> create() { return adoptRef(*new SynchronousLoaderMessageQueue); }

    void append(std::unique_ptr<Function<void()>>&& task) { m_queue.append(WTFMove(task)); }
    void kill() { m_queue.kill(); }
    bool killed() const { return m_queue.killed(); }
    std::unique_ptr<Function<void()>> waitForMessage() { return m_queue.waitForMessage(); }

private:
    SynchronousLoaderMessageQueue() = default;
    MessageQueue<Function<void()>> m_queue;
};

class SynchronousLoaderClient final : public ResourceHandleClient {
public:
    SynchronousLoaderClient();
    virtual ~SynchronousLoaderClient();

    void setAllowStoredCredentials(bool allow) { m_allowStoredCredentials = allow; }
    const ResourceResponse& response() const { return m_response; }
    Vector<char>& mutableData() { return m_data; }
    const ResourceError& error() const { return m_error; }
    SynchronousLoaderMessageQueue& messageQueue() { return m_messageQueue.get(); }

    WEBCORE_EXPORT static ResourceError platformBadResponseError();

private:
    void willSendRequestAsync(ResourceHandle*, ResourceRequest&&, ResourceResponse&&, CompletionHandler<void(ResourceRequest&&)>&&) override;
    bool shouldUseCredentialStorage(ResourceHandle*) override;
    void didReceiveAuthenticationChallenge(ResourceHandle*, const AuthenticationChallenge&) override;
    void didReceiveResponseAsync(ResourceHandle*, ResourceResponse&&, CompletionHandler<void()>&&) override;
    void didReceiveData(ResourceHandle*, const char*, unsigned, int /*encodedDataLength*/) override;
    void didFinishLoading(ResourceHandle*) override;
    void didFail(ResourceHandle*, const ResourceError&) override;
#if USE(PROTECTION_SPACE_AUTH_CALLBACK)
    void canAuthenticateAgainstProtectionSpaceAsync(ResourceHandle*, const ProtectionSpace&, CompletionHandler<void(bool)>&&) override;
#endif

    bool m_allowStoredCredentials { false };
    ResourceResponse m_response;
    Vector<char> m_data;
    ResourceError m_error;
    Ref<SynchronousLoaderMessageQueue> m_messageQueue;
};
}
