// file: $(NEDC_NFC)/class/cpp/Wfdb/wfdb_00.cc
//
// This file contains basic required methods such as constructors
// and destructors, as well as basic infrastructure (e.g., resizing).
//

// Revision History:
//
// 20240409 (JP): initial version
//

// local include files
//
#include "Wfdb.h"

//*****************************************************************************
//
// public methods: required methods such as constructors
//
//*****************************************************************************

// method: default constructor
//
// arguments:
//  long debug_level: the debug level (input)
//
// return: none
//
// This method implements the detaul constructor for the Wfdb class.
//
Wfdb::Wfdb() {

  // display debugging information
  //
  if (dbgl_d == Dbgl::FULL) {
    fprintf(stdout, "%s (line: %d) %s: initializing a Wfdb object\n",
	    __FILE__, __LINE__, __PRETTY_FUNCTION__);
  }

  // initialize variables used to store the annotation database headers
  //
  num_patients_d = (long)-1;
  num_classes_d = (long)-1;

  // initialize variables used to store the annotation database records
  //
  id_exam_d = (long*)NULL;
  id_patient_d = (long*)NULL;
  age_d = (long*)NULL;
  sex_d = (char**)NULL;
  annotations_d = (long**)NULL;
  date_exam_d = (char**)NULL;

  // initialize variables used to hold the first line of the header file
  //
  hdr_id_exam_d = (long)-1;
  hdr_num_channels_d = (long)-1;
  hdr_sample_frequency_d = (float)0.0;
  hdr_num_samples_per_channel_d = (long)-1;

  // define variables used to hold the channel-specific lines of the header:
  //  no initialization needed
  //

  // display debugging information
  //
  if (dbgl_d == Dbgl::FULL) {
    fprintf(stdout, "%s (line: %d) %s: done initializing a Wfdb object\n",
	    __FILE__, __LINE__, __PRETTY_FUNCTION__);
  }

  // exit gracefully
  //
}

// method: destructor
//
// arguments: none
//
// return: none
//
// This method implements the destructor.
//
Wfdb::~Wfdb() {

  // display debugging information
  //
  if (dbgl_d == Dbgl::FULL) {
    fprintf(stdout, "%s (line: %d) %s: begin destroying a Wdfb object\n",
	    __FILE__, __LINE__, __PRETTY_FUNCTION__);
  }

  // clear variables used to store the annotation database records
  //
  if (id_exam_d != (long*)NULL) {
    delete [] id_exam_d;
    id_exam_d = (long*)NULL;
  }
  
  id_patient_d = (long*)NULL;
  if (id_patient_d != (long*)NULL) {
    delete [] id_patient_d;
    id_patient_d = (long*)NULL;
  }

  age_d = (long*)NULL;
  if (age_d != (long*)NULL) {
    delete [] age_d;
    age_d = (long*)NULL;
  }

  if (num_patients_d > (long)0) {
    for (long i = 0; i < num_patients_d; i++) {
      if (sex_d[i] != (char*)NULL) {
	delete [] sex_d[i];
      }
    }
    delete [] sex_d;
  }
  else {
    sex_d = (char**)NULL;
  }

  if (annotations_d != (long**)NULL) {
    delete [] annotations_d;
    annotations_d = (long**)NULL;
  }

  if (num_patients_d > (long)0) {
    for (long i = 0; i < num_patients_d; i++) {
      if (date_exam_d[i] != (char*)NULL) {
	delete [] date_exam_d[i];
      }
    }
    delete [] date_exam_d;
  }
  else {
    date_exam_d = (char**)NULL;
  }

  // reset variables used to store the annotation database headers
  //
  num_patients_d = (long)-1;
  num_classes_d = (long)-1;

  // reset any other variables dynamically allocated:
  //  none needed at this time

  // display debugging information
  //
  if (dbgl_d == Dbgl::FULL) {
    fprintf(stdout, "%s (line: %d) %s: done initializing a Wfdb object\n",
	    __FILE__, __LINE__, __PRETTY_FUNCTION__);
  }

  // display debugging information
  //
  if (dbgl_d == Dbgl::FULL) {
    fprintf(stdout, "%s (line: %d) %s: end of destroying a Wfdb object\n",
	    __FILE__, __LINE__, __PRETTY_FUNCTION__);
  }

  // exit gracefully
  //
}

//*****************************************************************************
//
// static constants: define non-integral constants in the default constructor
//
//*****************************************************************************

// constants: class name
//
const char* Wfdb::CLASS_NAME = "Wfdb";

// declare the file extension for a header file
//
const char* Wfdb::EXT_HEA = "hea";
const char* Wfdb::EDF_BLANK = (char*)"X";	
const char* Wfdb::EDF_UNITS = (char*)"mV";	

//
// end of file