/* -----------------------------------------------------------------------------

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other Intellectual Property Rights other than the copyrights concerning 

the Software are granted under this license.

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Copyright (c) 2019-2026, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVenC Authors.

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     * Redistributions of source code must retain the above copyright notice,

     this list of conditions and the following disclaimer.

     * Redistributions in binary form must reproduce the above copyright

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     software without specific prior written permission.

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/** \file     dtrace.h

 *  \brief    Implementation of trace messages support for debugging

 */

#pragma once

#include "CommonDef.h"

#include <stdio.h>

#include <string>

#include <list>

#include <map>

#include <set>

#include <vector>

#include <cstdarg>

//! \ingroup CommonLib

//! \{

namespace vvenc {

class CDTrace;

typedef std::string CType;

struct dtrace_channel

{

  int channel_number;

  std::string channel_name;

};

typedef std::vector< dtrace_channel > dtrace_channels_t;

class Condition

{

public:

    CType type;

    bool ( *eval )( int, int );

    int rval;

    Condition( CType t, bool ( *efunc )( int,int ), int refval )

    : type(t), eval(efunc), rval(refval)

    {}

};

typedef std::pair< CType, int > state_type;

typedef std::vector<Condition> Rule;

class Channel

{

public:

    Channel() : rule_list(), _active(false), _activeLocal(false), _counter(0) {}

    bool evaluate( state_type stateval );

    void update( state_type& stateval, bool localState );

    void update( std::map< CType, int > state );

    bool active() { return _active || _activeLocal; }

    void add( Rule rule );

    void enable( bool _enable ) { _activeLocal = _enable; }

    void incrementCounter() { _counter++; }

    void decrementCounter() { _counter--  ; }

    int64_t getCounter() { return _counter; }

private:

    std::list< Rule > rule_list;

    bool _active;

    bool _activeLocal;

    int64_t _counter;

};

class CDTrace

{

  //friend class Rules;

private:

    bool          copy;

    FILE         *m_trace_file;

    int           m_error_code;

    typedef std::string Key;

    typedef std::vector<std::string> vstring;

    typedef std::map< Key, int > channel_map_t;

    std::vector< Channel > chanRules;

    std::set< CType > condition_types;

    std::map< CType, int > state;

    std::map< Key, int > deserializationTable;

public:

    CDTrace() : copy(false), m_trace_file(NULL) {}

    CDTrace( const char *filename, vstring channel_names );

    CDTrace( const char *filename, const dtrace_channels_t& channels );

    CDTrace( const std::string& sTracingFile, const std::string& sTracingRule, const dtrace_channels_t& channels );

    CDTrace( const CDTrace& other );

    CDTrace& operator=( const CDTrace& other );

    ~CDTrace();

    void swap         ( CDTrace& other );

    int  addRule      ( std::string rulestring );

    template<bool bCount>

    void dtrace       ( int, const char *format, /*va_list args*/... );

    void dtrace_repeat( int, int i_times, const char* format, /*va_list args*/... );

    bool update       ( state_type stateval );

    bool updateChannel( int channel, state_type stateval );

    int  init( vstring channel_names );

    int  getLastError() { return m_error_code;  }

    const char*  getChannelName( int channel_number );

    void getChannelsList( std::string& sChannels );

    std::string getErrMessage();

    int64_t getChannelCounter( int channel ) { return chanRules[channel].getCounter(); }

    void decrementChannelCounter( int channel ) { chanRules[channel].decrementCounter(); }

    void enableChannel( int channel, bool _enable ) { chanRules[channel].enable(_enable); }

};

} // namespace vvenc

//! \}