#include <array>

#include <memory>

#include <vector>

#include "statefunctions/router.h"

#include "types/gamestate.h"

#include "types/piecetype.h"

#include "types/statefunction.h"

#include "types/walls.h"

namespace mahjong {

namespace {

std::unique_ptr<GameState> Draw(std::unique_ptr<GameState> state) {

  state->currentPlayer = (state->currentPlayer + 1) % 4;

  state->turnNum++;

  state->pendingPiece = state->walls.TakePiece();

  state->hands.at(state->currentPlayer).live.push_back(state->pendingPiece);

  state->hands.at(state->currentPlayer).sort();

  state->nextState = StateFunctionType::kPlayerHand;

  return state;

}

}  // namespace

REGISTER_ROUTE(Draw, StateFunctionType::kDraw);

}  // namespace mahjong