/*
 * Copyright (C) 2009 Apple Inc. All Rights Reserved.
 * Copyright (C) 2009, 2011 Google 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. 
 *
 */

#ifndef WorkerScriptLoader_h
#define WorkerScriptLoader_h

#include "URL.h"
#include "ResourceRequest.h"
#include "ThreadableLoader.h"
#include "ThreadableLoaderClient.h"
#include <memory>
#include <wtf/FastMalloc.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/StringBuilder.h>

namespace WebCore {

    class ResourceRequest;
    class ResourceResponse;
    class ScriptExecutionContext;
    class TextResourceDecoder;
    class WorkerScriptLoaderClient;

    class WorkerScriptLoader : public RefCounted<WorkerScriptLoader>, public ThreadableLoaderClient {
        WTF_MAKE_FAST_ALLOCATED;
    public:
        static Ref<WorkerScriptLoader> create()
        {
            return adoptRef(*new WorkerScriptLoader);
        }

        void loadSynchronously(ScriptExecutionContext*, const URL&, CrossOriginRequestPolicy, ContentSecurityPolicyEnforcement);
        void loadAsynchronously(ScriptExecutionContext*, const URL&, CrossOriginRequestPolicy, ContentSecurityPolicyEnforcement, WorkerScriptLoaderClient*);

        void notifyError();

        String script();
        const URL& url() const { return m_url; }
        const URL& responseURL() const;
        bool failed() const { return m_failed; }
        unsigned long identifier() const { return m_identifier; }

        virtual void didReceiveResponse(unsigned long /*identifier*/, const ResourceResponse&) override;
        virtual void didReceiveData(const char* data, int dataLength) override;
        virtual void didFinishLoading(unsigned long identifier, double) override;
        virtual void didFail(const ResourceError&) override;
        virtual void didFailRedirectCheck() override;

    private:
        friend class WTF::RefCounted<WorkerScriptLoader>;

        WorkerScriptLoader();
        ~WorkerScriptLoader();

        std::unique_ptr<ResourceRequest> createResourceRequest();
        void notifyFinished();

        WorkerScriptLoaderClient* m_client;
        RefPtr<ThreadableLoader> m_threadableLoader;
        String m_responseEncoding;        
        RefPtr<TextResourceDecoder> m_decoder;
        StringBuilder m_script;
        URL m_url;
        URL m_responseURL;
        bool m_failed;
        unsigned long m_identifier;
        bool m_finishing;
    };

} // namespace WebCore

#endif // WorkerScriptLoader_h
