#include <array>

#include <cstddef>

#include <cstdint>

#include <memory>

#include <vector>

#include "controllers/playercontroller.h"

#include "statefunctions/router.h"

#include "statefunctions/stateutilities.h"

#include "types/event.h"

#include "types/gamestate.h"

#include "types/hand.h"

#include "types/statefunction.h"

#include "types/walls.h"

#include "types/winds.h"

namespace mahjong {

namespace {

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

  state->walls = Walls(state->g);

  for (size_t i = 0; i < 4; i++) {

    auto hand = state->walls.TakeHand();

    state->players.at(i).controller->RoundStart(

        hand, static_cast<Wind>((i + 3 * (state->roundNum % 4)) % 4),

        (state->roundNum > 3) ? kSouth : kEast);

    state->hands.at(i) = Hand(hand);

  }

  AlertPlayers(*state,

               Event{

                   .type = Event::kDora,  // type

                   .player = -1,          // player

                   .piece = static_cast<int16_t>(

                       state->walls.GetDoras()[0].toUint8_t()),  // piece

                   .decision = false,                            // decision

               });

  state->nextState = StateFunctionType::kDraw;

  return state;

}

}  // namespace

REGISTER_ROUTE(RoundStart, StateFunctionType::kRoundStart);

}  // namespace mahjong