#include <intcode/Grid.hpp>

namespace intcode {

auto Draw(std::ostream & out, std::map<Coord, ValueType> image) -> void {
  ValueType minX = 0, maxX = 0, minY = 0, maxY = 0;
  for (auto&& [k, _] : image) {
    auto [x,y] = k;
    minX = std::min(minX, x);
    maxX = std::max(maxX, x);
    minY = std::min(minY, y);
    maxY = std::max(maxY, y);
  }
  for (ValueType y = minY; y <= maxY; y++) {
    for (ValueType x = minX; x <= maxX; x++) {
      auto it = image.find({x,y});
      if (image.end() == it) {
        out << ".";
      } else switch (it->second) {
      case 0: out << "░"; break;
      case 1: out << "▓"; break;
      case 2: out << "2"; break;
      case 3: out << "3"; break;
      case 4: out << "4"; break;
      default: out << "!"; break;
      }
    }
    out << "\n";
  }
}

auto Up(Coord c) -> Coord {
  c.second -= 1;
  return c;
}

auto Down(Coord c) -> Coord {
  c.second += 1;
  return c;
}

auto Left(Coord c) -> Coord {
  c.first -= 1;
  return c;
}

auto Right(Coord c) -> Coord {
  c.first += 1;
  return c;
}

auto CW(Coord c) -> Coord {
  std::swap(c.first, c.second);
  c.first = -c.first;
  return c;
}

auto CCW(Coord c) -> Coord {
  std::swap(c.first, c.second);
  c.second = -c.second;
  return c;
}

auto Add(Coord x, Coord y) -> Coord {
  return {x.first + y.first, x.second + y.second};
}

} // namespace