//========= Copyright Valve Corporation ============//
#pragma once

#include <string>
#include <vector>
#include <stdint.h>

static const char *k_pchRuntimeOverrideVar = "VR_OVERRIDE";
static const char *k_pchConfigOverrideVar = "VR_CONFIG_PATH";
static const char *k_pchLogOverrideVar = "VR_LOG_PATH";

static const uint32_t k_unSteamVRAppId = 250820;
static const uint32_t k_unSteamVRMainAppId = 330050;


class CVRPathRegistry_Public
{
public:
	static std::string GetVRPathRegistryFilename();
	static std::string GetOpenVRConfigPath();
	static uint32_t GetSteamAppId();
	static bool IsSteamVRMain();
	static uint32_t InitSteamAppId();

public:
	CVRPathRegistry_Public();

	/** Returns paths using the path registry and the provided override values. Pass NULL for any paths you don't care about. 
	* Returns false if the path registry could not be read. Valid paths might still be returned based on environment variables. */
	static bool GetPaths( std::string *psRuntimePath, std::string *psConfigPath, std::string *psLogPath, const char *pchConfigPathOverride, const char *pchLogPathOverride, std::vector<std::string> *pvecExternalDrivers = NULL );

	bool BLoadFromFile( std::string *psError = nullptr );
	bool BSaveToFile() const;

	bool ToJsonString( std::string &sJsonString );

	// methods to get the current values
	std::string GetRuntimePath() const;
	std::string GetConfigPath() const;
	std::string GetLogPath() const;

protected:
	typedef std::vector< std::string > StringVector_t;

	// index 0 is the current setting
	StringVector_t m_vecRuntimePath;
	StringVector_t m_vecLogPath;
	StringVector_t m_vecConfigPath;

	// full list of external drivers
	StringVector_t m_vecExternalDrivers;
};