/* $Id: SnapshotImpl.h 98103 2023-01-17 14:15:46Z vboxsync $ */
/** @file
 * VirtualBox COM class implementation
 */

/*
 * Copyright (C) 2006-2023 Oracle and/or its affiliates.
 *
 * This file is part of VirtualBox base platform packages, as
 * available from https://www.virtualbox.org.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation, in version 3 of the
 * License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses>.
 *
 * SPDX-License-Identifier: GPL-3.0-only
 */

#ifndef MAIN_INCLUDED_SnapshotImpl_h
#define MAIN_INCLUDED_SnapshotImpl_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif

#include "SnapshotWrap.h"

class SnapshotMachine;

namespace settings
{
    struct Snapshot;
}

class ATL_NO_VTABLE Snapshot :
    public SnapshotWrap
{
public:
    DECLARE_COMMON_CLASS_METHODS(Snapshot)

    HRESULT FinalConstruct();
    void FinalRelease();

    // public initializer/uninitializer only for internal purposes
    HRESULT init(VirtualBox *aVirtualBox,
                 const Guid &aId,
                 const com::Utf8Str &aName,
                 const com::Utf8Str &aDescription,
                 const RTTIMESPEC &aTimeStamp,
                 SnapshotMachine *aMachine,
                 Snapshot *aParent);
    void uninit();

    void i_beginSnapshotDelete();

    void i_deparent();

    // public methods only for internal purposes

    /**
     * Override of the default locking class to be used for validating lock
     * order with the standard member lock handle.
     */
    virtual VBoxLockingClass getLockingClass() const
    {
        return LOCKCLASS_SNAPSHOTOBJECT;
    }

    const ComObjPtr<Snapshot>& i_getParent() const;
    const ComObjPtr<Snapshot> i_getFirstChild() const;

    const Utf8Str& i_getStateFilePath() const;

    uint32_t i_getDepth();

    ULONG i_getChildrenCount();
    ULONG i_getAllChildrenCount();

    const ComObjPtr<SnapshotMachine>& i_getSnapshotMachine() const;

    Guid i_getId() const;
    const Utf8Str& i_getName() const;
    RTTIMESPEC i_getTimeStamp() const;

    ComObjPtr<Snapshot> i_findChildOrSelf(IN_GUID aId);
    ComObjPtr<Snapshot> i_findChildOrSelf(const com::Utf8Str &aName);

    void i_updateSavedStatePaths(const Utf8Str &strOldPath,
                                 const Utf8Str &strNewPath);
    void i_updateSavedStatePathsImpl(const Utf8Str &strOldPath,
                                     const Utf8Str &strNewPath);

    bool i_sharesSavedStateFile(const Utf8Str &strPath,
                                Snapshot *pSnapshotToIgnore);

    void i_updateNVRAMPaths(const Utf8Str &strOldPath,
                            const Utf8Str &strNewPath);
    void i_updateNVRAMPathsImpl(const Utf8Str &strOldPath,
                                const Utf8Str &strNewPath);

    HRESULT i_saveSnapshotOne(settings::Snapshot &data) const;
    HRESULT i_saveSnapshot(settings::Snapshot &data) const;

    HRESULT i_uninitAll(AutoWriteLock &writeLock,
                        CleanupMode_T cleanupMode,
                        MediaList &llMedia,
                        std::list<Utf8Str> &llFilenames);


private:

    struct Data;            // opaque, defined in SnapshotImpl.cpp

    // wrapped ISnapshot properties
    HRESULT getId(com::Guid &aId);
    HRESULT getName(com::Utf8Str &aName);
    HRESULT setName(const com::Utf8Str &aName);
    HRESULT getDescription(com::Utf8Str &aDescription);
    HRESULT setDescription(const com::Utf8Str &aDescription);
    HRESULT getTimeStamp(LONG64 *aTimeStamp);
    HRESULT getOnline(BOOL *aOnline);
    HRESULT getMachine(ComPtr<IMachine> &aMachine);
    HRESULT getParent(ComPtr<ISnapshot> &aParent);
    HRESULT getChildren(std::vector<ComPtr<ISnapshot> > &aChildren);

    // wrapped ISnapshot methods
    HRESULT getChildrenCount(ULONG *aChildrenCount);

    Data *m;
};

#endif /* !MAIN_INCLUDED_SnapshotImpl_h */

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