/*
 * EventBufferCore.h
 *  *
 *  Created on: 20 Aug 2017
 *      Author: wentzelc
 */

#ifndef REDACORE_EVENTBUFFERCORE_H_
#define REDACORE_EVENTBUFFERCORE_H_

//---------------------------------------------------------------------------

// Standard C/C++ Libraries
/* none */

// redA Libraries
#include "ItemBufferCore.h"

//---------------------------------------------------------------------------

// Prototypes
class CEventBuffer;

typedef struct SEventEntry  TEventEntry;
typedef struct SEventType   TEventType;

//---------------------------------------------------------------------------

// Data Structures
struct SEventEntry {
    unsigned       EventNo;
    char            * EventType;
    char            * Parent;
    char            * DeviceName;
    char            * ParamName;
    char            * Value;
    char            DateTime[20];
    char            * SourceName;
};

struct SEventType {
    char        * Name;
    TEventType  * Next;
};

//---------------------------------------------------------------------------

// General Event life cycle functions
TEventEntry *   CreateEvent();
TEventEntry *   CreateEvent( const char * EventType, const char * Parent, const char * DeviceName, const char * ParamName,
                             long Value, const char * DateTimeStr, const char * SourceName );
TEventEntry *   CreateEvent( const char * EventType, const char * Parent, const char * DeviceName, const char * ParamName,
                             double Value, const char * DateTimeStr, const char * SourceName );
TEventEntry *   CreateEvent( const char * EventType, const char * Parent, const char * DeviceName, const char * ParamName,
                             const char * Value, const char * DateTimeStr, const char * SourceName );
TEventEntry *   CopyEvent( TEventEntry * Event );
bool            DestroyEvent( TEventEntry ** Event );

//---------------------------------------------------------------------------

// Event buffer abstract object (base class)
class CEventBuffer : protected CItemBuffer
{
    protected:
        char    Name[31];

        CEventBuffer        * PeerBuffer;

        TEventType          * FirstEventType;

    public:
        CEventBuffer( const char * BufferName );
        virtual ~CEventBuffer();

        // Markers
        TEventEntry     * CurrentEvent;
        unsigned int    EventCount;

        char *  GetName()           { return Name; };

        // Initialisation
        bool                    SetPeerBuffer( CEventBuffer *pPeerBuffer );

        // Filter List
        bool                    SetEventFilter( int n, ... );
        bool                    PassEventFilter( TEventEntry * Event );

        // Buffering
        virtual bool            AddEvent( TEventEntry * Event, unsigned int EventNo = 0 );
        virtual TEventEntry *   GetNextEvent( bool &Error );
        virtual bool            ClearCurrentEvent();
        virtual bool            ClearLastEvent( bool FreeEvent );

        virtual bool            DestroyEntry( void ** Entry );
};
//---------------------------------------------------------------------------

#endif /*REDACORE_EVENTBUFFERCORE_H_*/