//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//===========================================================================//
#if !defined(UTIL_REGISTRY_H)
#define UTIL_REGISTRY_H
#ifdef _WIN32
#pragma once
#endif

#include "tier0/platform.h"

//-----------------------------------------------------------------------------
// Purpose: Interface to registry
//-----------------------------------------------------------------------------
abstract_class IRegistry {
   public:
    // We have to have a virtual destructor since otherwise the derived class
    // destructors will not be called.
    virtual ~IRegistry() {}

    // Init/shutdown
    virtual bool Init(const char *platformName) = 0;
    virtual void Shutdown(void) = 0;

    // Read/write integers
    virtual int ReadInt(const char *key, int defaultValue = 0) = 0;
    virtual void WriteInt(const char *key, int value) = 0;

    // Read/write strings
    virtual const char *ReadString(const char *key,
                                   const char *defaultValue = 0) = 0;
    virtual void WriteString(const char *key, const char *value) = 0;

    // Read/write helper methods
    virtual int ReadInt(const char *pKeyBase, const char *pKey,
                        int defaultValue = 0) = 0;
    virtual void WriteInt(const char *pKeyBase, const char *key, int value) = 0;
    virtual const char *ReadString(const char *pKeyBase, const char *key,
                                   const char *defaultValue) = 0;
    virtual void WriteString(const char *pKeyBase, const char *key,
                             const char *value) = 0;
};

extern IRegistry *registry;

// Creates it and calls Init
IRegistry *InstanceRegistry(char const *subDirectoryUnderValve);
// Calls Shutdown and deletes it
void ReleaseInstancedRegistry(IRegistry *reg);

#endif  // UTIL_REGISTRY_H