#pragma once
#include <vector>
#include <utility>
#include <string>
#include <random>

struct Pair {
  size_t j = 0;
  size_t i = 0;
};

struct Room;

struct Room {
  size_t x = 0;
  size_t y = 0;
  size_t width = 0;
  size_t height = 0;

  std::vector<Room> next;
};

typedef std::vector<Pair> PairList;
typedef std::vector<int> MatrixRow;
typedef std::vector<MatrixRow> Matrix;

void dump_map(const std::string &msg, Matrix &map);
void add_neighbors(Matrix &closed, size_t j, size_t i);

class Map {
  Matrix m_input_map;
  Matrix m_walls;
  Matrix m_paths;
  std::vector<Room> m_rooms;
  int m_limit = 0;
public:

  // make explicit
  Map(Matrix input_map, Matrix walls_map, int limit) :
    m_input_map(input_map),
    m_walls(walls_map), m_limit(limit) {
  }

  // make random
  Map(size_t width, size_t height);

  // disable copying
  Map(Map &map) = delete;

  Matrix& paths() { return m_paths; }
  Matrix& input_map() { return m_input_map; }
  Matrix& walls() { return m_walls; }
  int limit() { return m_limit; }
  size_t width() { return m_walls[0].size(); }
  size_t height() { return m_walls.size(); }

  void make_room(size_t origin_y, size_t origin_x, size_t width, size_t height);

  void generate();
  void draw_map(Room &root);
  void make_paths();
  void partition_map(Room &cur, int depth);
  void dump();
};