#include <array>

#include <cstdint>

#include <memory>

#include "scoring/scoring.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> Tsumo(std::unique_ptr<GameState> state) {

  AlertPlayers(*state, Event{

                           .type = Event::kTsumo,           // type

                           .player = state->currentPlayer,  // player

                           .piece = static_cast<int16_t>(

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

                           .decision = false,                     // decision

                       });

  const int basic_points =

      getBasicPoints(scoreHand(*state, state->currentPlayer));

  state->scores.at(state->currentPlayer) += state->riichiSticks * 1000;

  state->riichiSticks = 0;

  state->scores.at(state->currentPlayer) += state->counters * 300;

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

    if (i == state->currentPlayer) {

      if (state->hands.at(state->currentPlayer).riichi) {

        state->scores.at(i) -= 1000;

      }

      continue;

    }

    int amount = 0;

    if (state->currentPlayer == state->roundNum % 4 ||

        i == state->roundNum % 4) {

      amount = 2 * basic_points;

    } else {

      amount = basic_points;

    }

    if ((amount % 100) != 0) {

      amount = amount + (100 - (amount % 100));

    }

    state->scores.at(i) -= amount;

    state->scores.at(i) -= state->counters * 100;

    if (state->hands.at(i).riichi) {

      state->scores.at(i) -= 1000;

    }

    state->scores.at(state->currentPlayer) += amount;

  }

  if (state->currentPlayer == state->roundNum % 4) {

    state->counters++;

  } else {

    state->roundNum++;

    state->counters = 0;

  }

  state->nextState = StateFunctionType::kRoundEnd;

  return state;

}

}  // namespace

REGISTER_ROUTE(Tsumo, StateFunctionType::kTsumo);

}  // namespace mahjong