#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "mazelib.h"
#include "runner.h"

void usage(void);

int main(int argc, char* argv[]) {
  if (argc < 3) {
    usage();
    return 1;
  }

  int width = (int) strtol(argv[1], NULL, 10);
  int height = (int) strtol(argv[2], NULL, 10);

  // The dimensions are valid when the width is between 9 and 79 (inclusive) and
  // the height is between 9 and 25 (inclusive).  Both the width and the height
  // must also be odd.
  bool dimensions_are_valid = ((9 <= width && width <= 79) &&
                               (9 <= height && height <= 25) &&
                               (width % 2 == 1) && (height % 2 == 1));
  if(!dimensions_are_valid) {
    usage();
    return 1;
  }

  // Oh, if you want to reuse the same maze for testing purposes, you can pass
  // a secret 3rd argument to the program.  Any integer will do, just pass the
  // same one each time and it will be the same maze
  unsigned int seed;
  if (argc == 4) {
    seed = (int) strtol(argv[3], NULL, 10);
  } else {
    seed = time(NULL);
  }

  maze_init(width, height, seed);

  maze_display();
  printf("\n\n\n");
  // You must implement this function in runner.c and declare it in runner.h
  runner_solve();
  maze_display();
  return 0;
}

// This function displays the usage message if the parameters are missing or incorrect.
void usage(void) {
  printf("Usage: mazerunner width height \n");
  printf("\t width must be an odd integer between 9 and 79 inclusive\n");
  printf("\t height must be an odd integer between 9 and 25 inclusive\n\n");
}