#include <stdint.h>

#include "cartesian.h"
#include "memory.h"

// struct cartesian_neighbor;

static bool move(char * room,
                 int width, int height,
                 int x, int y,
                 enum cartesian_direction direction)
{
  const struct cartesian_neighbor * dir = &cartesian_neighbor[direction];

  int nx = x + dir->x;
  int ny = y + dir->y;
  char n = room[ny * width + nx];
  switch (n) {
  case '#':
    return false;
  case 'O':
    if (!move(room, width, height, nx, ny, direction))
      return false;
    [[fallthrough]];
  default:
    {
      char c = room[y * width + x];
      room[y * width + x] = '.';
      room[ny * width + nx] = c;
      return true;
    }
  }
}

static enum cartesian_direction parse_direction(char c)
{
  switch (c) {
  case '<': return CARTESIAN_LEFT;
  case '>': return CARTESIAN_RIGHT;
  case '^': return CARTESIAN_UP;
  case 'v': return CARTESIAN_DOWN;
  }
  return -1;
}

int64_t _2024_day15_part1(const char * input, int length)
{
  return -1;
}

int64_t _2024_day15_part2(const char * input, int length)
{
  return -1;
}