// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.

#pragma once

#include <httpserv.h>
#include <memory>

//
// Pure abstract class
//
class IREQUEST_HANDLER
{
public:

    virtual
    REQUEST_NOTIFICATION_STATUS
    OnExecuteRequestHandler() = 0;

    virtual
    REQUEST_NOTIFICATION_STATUS
    OnAsyncCompletion(
        DWORD      cbCompletion,
        HRESULT    hrCompletionStatus
    ) = 0;

    virtual
    VOID
    NotifyDisconnect() noexcept(false) = 0;

    virtual
    ~IREQUEST_HANDLER(
        VOID
    ) = 0 { }

    virtual
    VOID
    ReferenceRequestHandler(
        VOID
    ) = 0;

    virtual
    VOID
    DereferenceRequestHandler(
        VOID
    ) = 0;
};


struct IREQUEST_HANDLER_DELETER
{
    void operator ()(IREQUEST_HANDLER* application) const
    {
        application->DereferenceRequestHandler();
    }
};

inline std::unique_ptr<IREQUEST_HANDLER, IREQUEST_HANDLER_DELETER> ReferenceRequestHandler(IREQUEST_HANDLER* handler)
{
    handler->ReferenceRequestHandler();
    return std::unique_ptr<IREQUEST_HANDLER, IREQUEST_HANDLER_DELETER>(handler);
};