// filename: get_ecg_waveform.c
// copyright Massachusetts Institute of Technology
// author: Matt Oefinger


#include <stdio.h>
#include <wfdb/wfdb.h>

char DB_PATH[] = "http://physionet.org/physiobank/database";
char ABSOLUTE_PATH[150];
char RECORD_ID[50];

WFDB_Time string2int(char* digit);
int string2int_2(char *digit);

WFDB_Time string2int(char* digit) {
   WFDB_Time result = 0;

   //--- Convert each digit char and add into result.
   while (*digit >= '0' && *digit <='9') {
      result = (result * 10) + (*digit - '0');
      digit++;
   }

   //--- Check that there were no non-digits at end.
   if (*digit != 0) {
      return 0;
   }

   return result;
}

int string2int_2(char* digit) {
   int result = 0;

   //--- Convert each digit char and add into result.
   while (*digit >= '0' && *digit <='9') {
      result = (result * 10) + (*digit - '0');
      digit++;
   }

   //--- Check that there were no non-digits at end.
   if (*digit != 0) {
      return 0;
   }

   return result;
}

main(int argc, char* argv[])
{

    int i, j, nsig, screenwidth, CMDcode;      
    WFDB_Siginfo *siarray;
    WFDB_Sample *v;
    WFDB_Time start_t_index, abstime;
    WFDB_Anninfo a;
    WFDB_Annotation annot;
    char annotator[50];

    start_t_index = string2int(argv[3]);
    screenwidth = string2int_2(argv[4]);    
    CMDcode = string2int_2(argv[5]);
    sprintf(annotator,argv[6]);

    sprintf(ABSOLUTE_PATH,"%s/%s",DB_PATH,argv[1]);
    setwfdb(ABSOLUTE_PATH);


    switch(CMDcode)
    {
      //This case handels all get signal requests...
    case 0:
    nsig = isigopen(argv[2], NULL, 0);
    if (nsig < 1)
        exit(1);
    siarray = (WFDB_Siginfo *)malloc(nsig * sizeof(WFDB_Siginfo));
    nsig = isigopen(argv[2], siarray, nsig);
    v = (WFDB_Sample *)malloc(nsig * sizeof(WFDB_Sample));
    if(isigsettime(start_t_index) != 0)
        exit(1);
    for(j=0; j < screenwidth; j++)
      { 
    	if(getvec(v) <= 0) 
          exit(1);
        else {
	  for(i=0; i<nsig; i++){
	    printf("%lf\n",aduphys(i,v[i])); 
	    // printf("%c\n",aduphys(i,v[i]));
	    printf("%s\n",siarray[i].desc);
	  }
       }
      }
    break;
     // this case is for getting annotations, searchable annotations are sent from get_ecg_annotation.c
    case 1:
    a.name = annotator; a.stat = WFDB_READ;
    if (annopen(argv[2], &a, 1) < 0)
        exit(1);
    if(iannsettime(start_t_index) != 0)
      exit(1);
    while (getann(0, &annot) == 0)
        {
        if(annot.time > (start_t_index+screenwidth))
	  break;
        abstime = annot.time;
        printf("%d\n%s\n", abstime, annstr(annot.anntyp));
        }
    break; 

    default:
    exit(1);
    break;
    }

    wfdbquit();   

exit(0);
}