/** @file
 * VirtualBox COM class implementation
 */

/*
 * Copyright (C) 2006-2014 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 */

#ifndef ____H_GUESTIMPL
#define ____H_GUESTIMPL

#include "VirtualBoxBase.h"
#include <iprt/list.h>
#include <iprt/time.h>
#include <VBox/ostypes.h>
#include <VBox/vmm/stam.h>

#include "AdditionsFacilityImpl.h"
#include "GuestCtrlImplPrivate.h"
#ifdef VBOX_WITH_DRAG_AND_DROP
# include "GuestDnDSourceImpl.h"
# include "GuestDnDTargetImpl.h"
#endif
#include "GuestSessionImpl.h"
#include "HGCM.h"

typedef enum
{
    GUESTSTATTYPE_CPUUSER     = 0,
    GUESTSTATTYPE_CPUKERNEL   = 1,
    GUESTSTATTYPE_CPUIDLE     = 2,
    GUESTSTATTYPE_MEMTOTAL    = 3,
    GUESTSTATTYPE_MEMFREE     = 4,
    GUESTSTATTYPE_MEMBALLOON  = 5,
    GUESTSTATTYPE_MEMCACHE    = 6,
    GUESTSTATTYPE_PAGETOTAL   = 7,
    GUESTSTATTYPE_PAGEFREE    = 8,
    GUESTSTATTYPE_MAX         = 9
} GUESTSTATTYPE;

class Console;

class ATL_NO_VTABLE Guest :
    public VirtualBoxBase,
    VBOX_SCRIPTABLE_IMPL(IGuest)
{
public:
    VIRTUALBOXBASE_ADD_ERRORINFO_SUPPORT(Guest, IGuest)

    DECLARE_NOT_AGGREGATABLE(Guest)

    DECLARE_PROTECT_FINAL_CONSTRUCT()

    BEGIN_COM_MAP(Guest)
        VBOX_DEFAULT_INTERFACE_ENTRIES(IGuest)
    END_COM_MAP()

    DECLARE_EMPTY_CTOR_DTOR (Guest)

    HRESULT FinalConstruct(void);
    void FinalRelease(void);

    // Public initializer/uninitializer for internal purposes only.
    HRESULT init (Console *aParent);
    void uninit();

    // IGuest properties.
    STDMETHOD(COMGETTER(OSTypeId))(BSTR *aOSTypeId);
    STDMETHOD(COMGETTER(AdditionsRunLevel))(AdditionsRunLevelType_T *aRunLevel);
    STDMETHOD(COMGETTER(AdditionsVersion))(BSTR *a_pbstrAdditionsVersion);
    STDMETHOD(COMGETTER(AdditionsRevision))(ULONG *a_puAdditionsRevision);
    STDMETHOD(COMGETTER(DnDSource))(IGuestDnDSource ** aSource);
    STDMETHOD(COMGETTER(DnDTarget))(IGuestDnDTarget ** aTarget);
    STDMETHOD(COMGETTER(EventSource))(IEventSource ** aEventSource);
    STDMETHOD(COMGETTER(Facilities))(ComSafeArrayOut(IAdditionsFacility *, aFacilities));
    STDMETHOD(COMGETTER(Sessions))(ComSafeArrayOut(IGuestSession *, aSessions));
    STDMETHOD(COMGETTER(MemoryBalloonSize)) (ULONG *aMemoryBalloonSize);
    STDMETHOD(COMSETTER(MemoryBalloonSize)) (ULONG aMemoryBalloonSize);
    STDMETHOD(COMGETTER(StatisticsUpdateInterval)) (ULONG *aUpdateInterval);
    STDMETHOD(COMSETTER(StatisticsUpdateInterval)) (ULONG aUpdateInterval);
    // IGuest methods.
    STDMETHOD(GetFacilityStatus)(AdditionsFacilityType_T aType, LONG64 *aTimestamp, AdditionsFacilityStatus_T *aStatus);
    STDMETHOD(GetAdditionsStatus)(AdditionsRunLevelType_T aLevel, BOOL *aActive);
    STDMETHOD(SetCredentials)(IN_BSTR aUsername, IN_BSTR aPassword,
                              IN_BSTR aDomain, BOOL aAllowInteractiveLogon);
    // Guest control.
    STDMETHOD(CreateSession)(IN_BSTR aUser, IN_BSTR aPassword, IN_BSTR aDomain, IN_BSTR aSessionName, IGuestSession **aGuestSession);
    STDMETHOD(FindSession)(IN_BSTR aSessionName, ComSafeArrayOut(IGuestSession *, aSessions));
    // Misc stuff
    STDMETHOD(InternalGetStatistics)(ULONG *aCpuUser, ULONG *aCpuKernel, ULONG *aCpuIdle,
                                     ULONG *aMemTotal, ULONG *aMemFree, ULONG *aMemBalloon, ULONG *aMemShared, ULONG *aMemCache,
                                     ULONG *aPageTotal, ULONG *aMemAllocTotal, ULONG *aMemFreeTotal, ULONG *aMemBalloonTotal, ULONG *aMemSharedTotal);
    STDMETHOD(UpdateGuestAdditions)(IN_BSTR aSource, ComSafeArrayIn(IN_BSTR, aArguments), ComSafeArrayIn(AdditionsUpdateFlag_T, aFlags), IProgress **aProgress);

public:
    /** @name Static internal methods.
     * @{ */
#ifdef VBOX_WITH_GUEST_CONTROL
    /** Static callback for handling guest control notifications. */
    static DECLCALLBACK(int) notifyCtrlDispatcher(void *pvExtension, uint32_t u32Function, void *pvData, uint32_t cbData);
    static DECLCALLBACK(void) staticUpdateStats(RTTIMERLR hTimerLR, void *pvUser, uint64_t iTick);
#endif
    /** @}  */

public:
    /** @name Public internal methods.
     * @{ */
    void enableVMMStatistics(BOOL aEnable) { mCollectVMMStats = aEnable; };
    void setAdditionsInfo(Bstr aInterfaceVersion, VBOXOSTYPE aOsType);
    void setAdditionsInfo2(uint32_t a_uFullVersion, const char *a_pszName, uint32_t a_uRevision, uint32_t a_fFeatures);
    bool facilityIsActive(VBoxGuestFacilityType enmFacility);
    void facilityUpdate(VBoxGuestFacilityType a_enmFacility, VBoxGuestFacilityStatus a_enmStatus, uint32_t a_fFlags, PCRTTIMESPEC a_pTimeSpecTS);
    ComObjPtr<Console> getConsole(void) { return mParent; }
    void setAdditionsStatus(VBoxGuestFacilityType a_enmFacility, VBoxGuestFacilityStatus a_enmStatus, uint32_t a_fFlags, PCRTTIMESPEC a_pTimeSpecTS);
    void onUserStateChange(Bstr aUser, Bstr aDomain, VBoxGuestUserState enmState, const uint8_t *puDetails, uint32_t cbDetails);
    void setSupportedFeatures(uint32_t aCaps);
    HRESULT setStatistic(ULONG aCpuId, GUESTSTATTYPE enmType, ULONG aVal);
    BOOL isPageFusionEnabled();
    static HRESULT setErrorStatic(HRESULT aResultCode,
                                  const Utf8Str &aText)
    {
        return setErrorInternal(aResultCode, getStaticClassIID(), getStaticComponentName(), aText, false, true);
    }
#ifdef VBOX_WITH_GUEST_CONTROL
    int         dispatchToSession(PVBOXGUESTCTRLHOSTCBCTX pCtxCb, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb);
    uint32_t    getAdditionsVersion(void) { return mData.mAdditionsVersionFull; }
    int         sessionRemove(GuestSession *pSession);
    int         sessionCreate(const GuestSessionStartupInfo &ssInfo, const GuestCredentials &guestCreds, ComObjPtr<GuestSession> &pGuestSession);
    inline bool sessionExists(uint32_t uSessionID);
#endif
    /** @}  */

private:
    /** @name Private internal methods.
     * @{ */
    void updateStats(uint64_t iTick);
    static int staticEnumStatsCallback(const char *pszName, STAMTYPE enmType, void *pvSample, STAMUNIT enmUnit,
                                       STAMVISIBILITY enmVisiblity, const char *pszDesc, void *pvUser);
    /** @}  */

    typedef std::map< AdditionsFacilityType_T, ComObjPtr<AdditionsFacility> > FacilityMap;
    typedef std::map< AdditionsFacilityType_T, ComObjPtr<AdditionsFacility> >::iterator FacilityMapIter;
    typedef std::map< AdditionsFacilityType_T, ComObjPtr<AdditionsFacility> >::const_iterator FacilityMapIterConst;

    /** Map for keeping the guest sessions. The primary key marks the guest session ID. */
    typedef std::map <uint32_t, ComObjPtr<GuestSession> > GuestSessions;

    struct Data
    {
        Data() : mAdditionsRunLevel(AdditionsRunLevelType_None)
            , mAdditionsVersionFull(0), mAdditionsRevision(0), mAdditionsFeatures(0)
        { }

        Bstr                        mOSTypeId;
        FacilityMap                 mFacilityMap;
        AdditionsRunLevelType_T     mAdditionsRunLevel;
        uint32_t                    mAdditionsVersionFull;
        Bstr                        mAdditionsVersionNew;
        uint32_t                    mAdditionsRevision;
        uint32_t                    mAdditionsFeatures;
        Bstr                        mInterfaceVersion;
        GuestSessions               mGuestSessions;
        uint32_t                    mNextSessionID;
    } mData;

    ULONG                           mMemoryBalloonSize;
    ULONG                           mStatUpdateInterval;
    uint64_t                        mNetStatRx;
    uint64_t                        mNetStatTx;
    uint64_t                        mNetStatLastTs;
    ULONG                           mCurrentGuestStat[GUESTSTATTYPE_MAX];
    ULONG                           mVmValidStats;
    BOOL                            mCollectVMMStats;
    BOOL                            mfPageFusionEnabled;

    const ComObjPtr<Console>        mParent;

#ifdef VBOX_WITH_GUEST_CONTROL
    /**
     * This can safely be used without holding any locks.
     * An AutoCaller suffices to prevent it being destroy while in use and
     * internally there is a lock providing the necessary serialization.
     */
    const ComObjPtr<EventSource>    mEventSource;
    /** General extension callback for guest control. */
    HGCMSVCEXTHANDLE                mhExtCtrl;
#endif

#ifdef VBOX_WITH_DRAG_AND_DROP
    /** The guest's DnD source. */
    const ComObjPtr<GuestDnDSource> mDnDSource;
    /** The guest's DnD target. */
    const ComObjPtr<GuestDnDTarget> mDnDTarget;
#endif

    RTTIMERLR                       mStatTimer;
    uint32_t                        mMagic; /** @todo r=andy Rename this to something more meaningful. */
};
#define GUEST_MAGIC 0xCEED2006u /** @todo r=andy Not very well defined!? */

#endif // ____H_GUESTIMPL