// remvar.h :
//

#if !defined(AGD_REMVAR_H__B91C5ED5_B980_4B06_9CEA_886DB0518B29__INCLUDED_)
#define AGD_REMVAR_H__B91C5ED5_B980_4B06_9CEA_886DB0518B29__INCLUDED_

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <string>
#include <pthread.h>
#include <typeinfo>
#include <vector>
#include <map>
#include <gfa/gfaipc.h>
#ifdef SITARA_BUILD
#include <json/json.h>
#else	//	SITARA_BUILD
#include <jsoncpp/json/json.h>
#endif	//	SITARA_BUILD
#ifndef _LIBBUILD
#include <gfa/svc/common/logfile.h>
#include <gfa/svc/common/debug.h>
#include <gfa/svc/remanent/remlogger.h>
#else	//	_LIBBUILD
#include "common/logfile.h"
#include "common/debug.h"
#include "remlogger.h"
#endif	//	_LIBBUILD

/////////////////////////////////////////////////////////////////////////////

#define _XML_SPACES_PER_TAB					4
#define _JSON_SPACES_PER_TAB				4
#define _TRACK_TYPES_AT_LOAD				0
#define _TRACK_REM_WRITES					0
#define _IMPLEMENT_XML						0

/////////////////////////////////////////////////////////////////////////////

typedef union _CHECK_UPDATE_SHM_RETVAL
{
	struct
	{
		unsigned int nChecked;
		unsigned int nUpdated;
	};
	unsigned long long nRetval;
}CHECK_UPDATE_SHM_RETVAL, *LPCHECK_UPDATE_SHM_RETVAL;
typedef const CHECK_UPDATE_SHM_RETVAL *LPCCHECK_UPDATE_SHM_RETVAL;

/////////////////////////////////////////////////////////////////////////////
// remvar.h - Declarations:

class CRemVarTable;

class CRemanent
{
public:
	virtual void CreateMembersTable(CRemVarTable &vt)								= 0;
	virtual bool SaveJSON(FILE *f, int nIndent, bool bValueOnly, bool bWriteComma)	= 0;
	virtual bool SetJSONValue(const Json::Value &jv, bool fLock){
		UNUSED(jv);
		UNUSED(fLock);
		return false;}
	virtual bool SetDoubleValue(double val, bool fLock){
		UNUSED(val);
		UNUSED(fLock);
		return false;}
	virtual unsigned long long CheckUpdateShm(bool fLock)							= 0;
	virtual void InitPath(CRemanent *pParent, const char *pszMemberName)			= 0;
	virtual const char* GetPath(void) const											= 0;
	virtual unsigned long long GetUpdateCount(void) const							= 0;
	virtual void Log(time_t ts, CRemLogger &rlogger)								= 0;
};

/////////////////////////////////////////////////////////////////////////////

class CRemVarTable
{
public:
	typedef bool (*_PFNCMP)(const char*, const char*);
public:
	CRemVarTable(void);
	virtual ~CRemVarTable(void);

	void AddVar(CRemanent *pv);
	CRemanent* Find(const char *key) const;
	unsigned long LoadJSONValues(const Json::Value &jv);
	bool GetMaxUpdateVariables(std::vector<const CRemanent*> &vars, size_t nMaxVars);

private:
	void ParseJsonMember(const Json::Value &rMem, std::string &sname, unsigned long &parsed);
	void ParseJsonScalar(const Json::Value &rScl, std::string &sname, unsigned long &parsed);
	void ParseJsonArray(const Json::Value &rArr, std::string &sname, unsigned long &parsed);
	void ParseJsonObject(const Json::Value &rObj, std::string &sname, unsigned long &parsed);

private:
	std::map<const char*, CRemanent*, _PFNCMP> m_map;
};

/////////////////////////////////////////////////////////////////////////////

class CDbPersist
{
public:
	typedef bool (*_PFNCMP)(const std::string&, const std::string&);
	typedef std::map<std::string, std::string, _PFNCMP> CFieldMap;
	typedef std::vector<CFieldMap> CTagsMap;

public:
	CDbPersist(const char *pszDatabaseName, const char *pszTagsTableName, const char *pszLogsTableName, const char *pszDbUser, const char *pszDbPass);
	virtual ~CDbPersist(void);

	int RestoreValues(const CRemVarTable &map, CLogfile &rlf);

	const CTagsMap &GetTagsMap(void) const {
		return m_tags;}
private:
	bool Init(CMySqlDB &db);

private:
	std::string m_sDatabaseName;
	std::string m_sTagsTableName;
	std::string m_sLogsTableName;
	std::string m_sUser;
	std::string m_sPass;
	CTagsMap m_tags;
	std::string m_lastError;
};

/////////////////////////////////////////////////////////////////////////////

class CRemVariable : public CRemanent
{
public:
	enum VT
	{
		VT_Invalid,
		VT_bool,
		VT_I1,
		VT_UI1,
		VT_I2,
		VT_UI2,
		VT_I4,
		VT_UI4,
		VT_I8,
		VT_UI8,
		VT_float,
		VT_double,
		VT_string
	};

	typedef union
	{
		void *pVoid;
		bool *pBool;
		signed char *pI1;
		unsigned char *pUI1;
		signed short *pI2;
		unsigned short *pUI2;
		signed int *pI4;
		unsigned int *pUI4;
		signed long long *pI8;
		unsigned long long *pUI8;
		float *pFloat;
		double *pDouble;
	}V_Ptr;

	typedef union
	{
		bool boolVal;
		signed char I1Val;
		unsigned char UI1Val;
		signed short I2Val;
		unsigned short UI2Val;
		signed int I4Val;
		unsigned int UI4Val;
		signed long long I8Val;
		unsigned long long UI8Val;
		float FloatVal;
		double DoubleVal;
	}V_Val;

public:
	CRemVariable(void *pData, const std::type_info &rti, HSHM hShm, bool bIsDbPersitent, const char *pszName, int nIndex, CRemanent *pParent);
	virtual ~CRemVariable(void);

	virtual void CreateMembersTable(CRemVarTable &vt);
	virtual bool SaveJSON(FILE *f, int nIndent, bool bValueOnly, bool bWriteComma);
	virtual bool SetJSONValue(const Json::Value &jv, bool fLock);
	virtual bool SetDoubleValue(double val, bool fLock);
	virtual unsigned long long CheckUpdateShm(bool fLock);
	virtual void InitPath(CRemanent*pParent, const char *pszMemberName);
	virtual const char* GetPath(void) const {
		return m_pszPath;}
	virtual unsigned long long GetUpdateCount(void) const {
		return m_nUpdates;}
	virtual void Log(time_t ts, CRemLogger &rlogger);

private:
    void Lock(void);
    void Unlock(void);

private:
    std::string m_name;
    std::string m_path;
    const char *m_pszPath;
    int m_nIndex;
    enum VT m_vt;
    volatile V_Ptr m_data;
    V_Val m_cache;
    HSHM m_hShm;
    CRemanent *m_pParent;
    unsigned long long m_nUpdates;
    double m_fLogValue;
    bool m_bMustLog;
    bool m_bIsDbPersitent;
    size_t m_nCbVarpath;
};

/////////////////////////////////////////////////////////////////////////////

class CRemStringVariable : public CRemanent
{
public:
	typedef enum
	{
		VT_Invalid,	// 0
		VT_Latin1,	// 1
		VT_UTF_8,	// 2
		VT_UTF_16,	// 3
		VT_UTF_32,	// 4
		VT_Unicode,	// 5
		VT_Last
	}VT;

	typedef union
	{
		void *pVoid;
		char *pszMbs;
		char16_t *pszWc16;
		char32_t *pszWc32;
		wchar_t *pszWcs;
	}V_Ptr;

public:
	CRemStringVariable(void *pData, size_t nCChData, VT vt, const std::type_info &rti, HSHM hShm, bool bIsDbPersitent, const char *pszName, int nIndex, CRemanent *pParent);
	virtual ~CRemStringVariable(void);

	virtual void CreateMembersTable(CRemVarTable &vt);
	virtual bool SaveJSON(FILE *f, int nIndent, bool bValueOnly, bool bWriteComma);
	virtual bool SetJSONValue(const Json::Value &jv, bool fLock);
	virtual unsigned long long CheckUpdateShm(bool fLock);
	virtual void InitPath(CRemanent*pParent, const char *pszMemberName);
	virtual const char* GetPath(void) const {
		return m_pszPath;}
	virtual unsigned long long GetUpdateCount(void) const {
		return m_nUpdates;}
	virtual void Log(time_t ts, CRemLogger &rlogger);

private:
    bool shmChanged(bool fLock);
    void Lock(void);
    void Unlock(void);
    void zeroTerm(volatile V_Ptr &rp, size_t at);

private:
    std::string m_name;
    std::string m_path;
    const char *m_pszPath;
    int m_nIndex;
    VT m_vt;
    volatile V_Ptr m_data;
    V_Ptr m_cache;
    size_t m_nCbBuffer;
    size_t m_nCbString;
    HSHM m_hShm;
    CRemanent *m_pParent;
    unsigned long long m_nUpdates;
    bool m_bMustLog;
    bool m_bIsDbPersitent;
    size_t m_nCbVarpath;
    char m_szLog[_RL_MAX_STRVAL_LENGTH];
    size_t m_nCbLog;
};

/////////////////////////////////////////////////////////////////////////////

class CRemBitVariable : public CRemanent
{
public:
	enum VT
	{
		VT_Invalid,
		VT_bool,
		VT_I1,
		VT_UI1,
		VT_I2,
		VT_UI2,
		VT_I4,
		VT_UI4,
		VT_I8,
		VT_UI8,
		VT_float,
		VT_double,
		VT_string
	};

public:
	CRemBitVariable(void *pData, size_t nOffset, int nBitNr, HSHM hShm, bool bIsDbPersitent, const char *pszName, CRemanent *pParent);
	virtual ~CRemBitVariable(void);

	virtual void CreateMembersTable(CRemVarTable &vt);
	virtual bool SaveJSON(FILE *f, int nIndent, bool bValueOnly, bool bWriteComma);
	virtual bool SetJSONValue(const Json::Value &jv, bool fLock);
	virtual bool SetDoubleValue(double val, bool fLock);
	virtual unsigned long long CheckUpdateShm(bool fLock);
	virtual void InitPath(CRemanent*pParent, const char *pszMemberName);
	virtual const char* GetPath(void) const {
		return m_pszPath;}
	virtual unsigned long long GetUpdateCount(void) const {
		return m_nUpdates;}
	virtual void Log(time_t ts, CRemLogger &rlogger);

private:
    void Lock(void);
    void Unlock(void);

private:
    std::string m_name;
    std::string m_path;
    const char *m_pszPath;
	uint8_t *m_pShmByte;
	uint8_t m_mask;
	bool m_cacheVal;
    HSHM m_hShm;
    CRemanent *m_pParent;
    unsigned long long m_nUpdates;
    double m_fLogValue;
    bool m_bMustLog;
    bool m_bIsDbPersitent;
    size_t m_nCbVarpath;
};

/////////////////////////////////////////////////////////////////////////////
#endif	//	!defined(AGD_REMVAR_H__B91C5ED5_B980_4B06_9CEA_886DB0518B29__INCLUDED_)