//====== Copyright © 1996-2008, Valve Corporation, All rights reserved. =======
//
// Purpose: interface to app data in Steam
//
//=============================================================================

#ifndef ISTEAMAPPS_H
#define ISTEAMAPPS_H
#ifdef _WIN32
#pragma once
#endif

const int k_cubAppProofOfPurchaseKeyMax = 64;			// max bytes of a legacy cd key we support


//-----------------------------------------------------------------------------
// Purpose: interface to app data
//-----------------------------------------------------------------------------
class ISteamApps
{
public:
	virtual bool BIsSubscribed() = 0;
	virtual bool BIsLowViolence() = 0;
	virtual bool BIsCybercafe() = 0;
	virtual bool BIsVACBanned() = 0;
	virtual const char *GetCurrentGameLanguage() = 0;
	virtual const char *GetAvailableGameLanguages() = 0;

	// only use this member if you need to check ownership of another game related to yours, a demo for example
	virtual bool BIsSubscribedApp( AppId_t appID ) = 0;

	// Takes AppID of DLC and checks if the user owns the DLC & if the DLC is installed
	virtual bool BIsDlcInstalled( AppId_t appID ) = 0;

	// returns the Unix time of the purchase of the app
	virtual uint32 GetEarliestPurchaseUnixTime( AppId_t nAppID ) = 0;

	// Checks if the user is subscribed to the current app through a free weekend
	// This function will return false for users who have a retail or other type of license
	// Before using, please ask your Valve technical contact how to package and secure your free weekened
	virtual bool BIsSubscribedFromFreeWeekend() = 0;

	// Returns the number of DLC pieces for the running app
	virtual int GetDLCCount() = 0;

	// Returns metadata for DLC by index, of range [0, GetDLCCount()]
	virtual bool BGetDLCDataByIndex( int iDLC, AppId_t *pAppID, bool *pbAvailable, char *pchName, int cchNameBufferSize ) = 0;

	// Install/Uninstall control for optional DLC
	virtual void InstallDLC( AppId_t nAppID ) = 0;
	virtual void UninstallDLC( AppId_t nAppID ) = 0;

	// Request cd-key for yourself or owned DLC. If you are interested in this
	// data then make sure you provide us with a list of valid keys to be distributed
	// to users when they purchase the game, before the game ships.
	// You'll receive an AppProofOfPurchaseKeyResponse_t callback when
	// the key is available (which may be immediately).
	virtual void RequestAppProofOfPurchaseKey( AppId_t nAppID ) = 0;

#ifdef _PS3
	// Result returned in a RegisterActivationCodeResponse_t callresult
	virtual SteamAPICall_t RegisterActivationCode( const char *pchActivationCode ) = 0;
#endif
};

#define STEAMAPPS_INTERFACE_VERSION "STEAMAPPS_INTERFACE_VERSION005"

// callbacks
#pragma pack( push, 8 )

//-----------------------------------------------------------------------------
// Purpose: posted after the user gains ownership of DLC & that DLC is installed
//-----------------------------------------------------------------------------
struct DlcInstalled_t
{
	enum { k_iCallback = k_iSteamAppsCallbacks + 5 };
	AppId_t m_nAppID;		// AppID of the DLC
};


//-----------------------------------------------------------------------------
// Purpose: possible results when registering an activation code
//-----------------------------------------------------------------------------
enum ERegisterActivactionCodeResult
{
	k_ERegisterActivactionCodeResultOK = 0,
	k_ERegisterActivactionCodeResultFail = 1,
	k_ERegisterActivactionCodeResultAlreadyRegistered = 2,
	k_ERegisterActivactionCodeResultTimeout = 3,
	k_ERegisterActivactionCodeAlreadyOwned = 4
};


//-----------------------------------------------------------------------------
// Purpose: response to RegisterActivationCode()
//-----------------------------------------------------------------------------
struct RegisterActivationCodeResponse_t
{
	enum { k_iCallback = k_iSteamAppsCallbacks + 8 };
	ERegisterActivactionCodeResult m_eResult;
	uint32 m_unPackageRegistered;						// package that was registered. Only set on success
};

//-----------------------------------------------------------------------------
// Purpose: response to RegisterActivationCode()
//-----------------------------------------------------------------------------
struct AppProofOfPurchaseKeyResponse_t
{
	enum { k_iCallback = k_iSteamAppsCallbacks + 13 };
	EResult m_eResult;
	uint32	m_nAppID;
	char	m_rgchKey[ k_cubAppProofOfPurchaseKeyMax ];
};

#pragma pack( pop )

#endif // ISTEAMAPPS_H
