//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: A higher level link library for general use in the game and tools.
//
//===========================================================================//

#ifndef TIER2DM_H
#define TIER2DM_H

#if defined(_WIN32)
#pragma once
#endif

#include "tier2/tier2.h"

//-----------------------------------------------------------------------------
// Set up methods related to datamodel interfaces
//-----------------------------------------------------------------------------
bool ConnectDataModel(CreateInterfaceFn factory);
InitReturnVal_t InitDataModel();
void ShutdownDataModel();
void DisconnectDataModel();

//-----------------------------------------------------------------------------
// Helper empty implementation of an IAppSystem for tier2 libraries
//-----------------------------------------------------------------------------
template <class IInterface, int ConVarFlag = 0>
class CTier2DmAppSystem : public CTier2AppSystem<IInterface, ConVarFlag> {
    typedef CTier2AppSystem<IInterface, ConVarFlag> BaseClass;

   public:
    CTier2DmAppSystem(bool bIsPrimaryAppSystem = true)
        : BaseClass(bIsPrimaryAppSystem) {}

    virtual bool Connect(CreateInterfaceFn factory) {
        if (!BaseClass::Connect(factory)) return false;

        ConnectDataModel(factory);

        return true;
    }

    virtual InitReturnVal_t Init() {
        InitReturnVal_t nRetVal = BaseClass::Init();
        if (nRetVal != INIT_OK) return nRetVal;

        nRetVal = InitDataModel();
        if (nRetVal != INIT_OK) return nRetVal;

        return INIT_OK;
    }

    virtual void Shutdown() {
        ShutdownDataModel();
        BaseClass::Shutdown();
    }

    virtual void Disconnect() {
        DisconnectDataModel();
        BaseClass::Disconnect();
    }
};

#endif  // TIER2DM_H