/**
 * Main driver for heatmap program.
 *
 * @author CPSC 223 Staff and you
 */

// see the header file for suggestions on how the suggested functions behave
// (but this and heatmap.c are in Optional, so you can do whatever you want
// or need to do with any of this code -- that goes for track.c as well)
#include "heatmap.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

#include "track.h"
#include "trackpoint.h"
#include "location.h"

int main(int argc, char **argv)
{
  command_line args;
  if (!validate_command_line(argc, argv, &args))
    {
      fprintf(stderr, "%s: invalid parameter\n", argv[0]);
      return 1;
    }

  track *trk = track_create();
  if (trk == NULL)
    {
      fprintf(stderr, "%s: could not create track\n", argv[0]);
      return 1;
    }

  if (!read_input(stdin, trk))
    {
      track_destroy(trk);
      return 1;
    }

  // print the heatmap
  if (!show_heatmap(stdout, trk, &args))
    {
      track_destroy(trk);
      return 1;
    }

  track_destroy(trk);
  return 0;
}

bool validate_command_line(int argc, char **argv, command_line *args)
{
  // TO DO: set the fields of the struct args points to according to
  // the contents of the command line, checking for validity along the
  // way
  return true;
}
 
bool read_input(FILE *in, track *trk)
{
  // THIS WORKS FOR VALID INPUTS WITH ONLY ONE SEGMENT
  // TO DO: checking for blank lines that separate segments and making sure
  // no crashes or infinite loops on invalid input
  
  double lat;
  double lon;
  long time;
  while (fscanf(in, "%lf %lf %ld", &lat, &lon, &time) == 3)
    {
      // create point and add to track
      trackpoint *pt = trackpoint_create(lat, lon, time);
      if (pt == NULL)
        {
          fprintf(stderr, "could not create point %f %f %ld\n", lat, lon, time);
          return false;
        }
      
      track_add_point(trk, pt);

      // track made its own copy, so we destroy ours
      trackpoint_destroy(pt);
    }

  return true;
}

bool show_heatmap(FILE *out, const track *trk, const command_line *args)
{
  // TO DO: ask the track for a heatmap and print it!
  return true;
}