#include <array>

#include <cstdint>

#include <memory>

#include <vector>

#include "analysis/util.h"

#include "statefunctions/router.h"

#include "statefunctions/stateutilities.h"

#include "types/event.h"

#include "types/gamestate.h"

#include "types/piecetype.h"

#include "types/statefunction.h"

namespace mahjong {

namespace {

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

  // TODO(#22): Ask the players if they want to riichi

  state->pendingPiece =

      getRiichiDiscard(state->hands.at(state->currentPlayer).live)[0];

  AlertPlayers(*state,

               Event{

                   .type = Event::kRiichi,          // type

                   .player = state->currentPlayer,  // player

                   .piece = static_cast<int16_t>(

                       Piece(state->pendingPiece).toUint8_t()),  // piece

                   .decision = false,                            // decision

               });

  state->hands.at(state->currentPlayer).riichiRound = state->turnNum;

  state->hands.at(state->currentPlayer).riichiPieceDiscard =

      state->hands.at(state->currentPlayer).discards.size();

  state->hands.at(state->currentPlayer).riichi = true;

  state->riichiSticks++;

  state->nextState = StateFunctionType::kDiscard;

  return state;

}

}  // namespace

REGISTER_ROUTE(Riichi, StateFunctionType::kRiichi);

}  // namespace mahjong