Arakne / Araknemu

 * This file is part of Araknemu.

 *

 * Araknemu is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * Araknemu is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with Araknemu.  If not, see <https://www.gnu.org/licenses/>.

 *

 * Copyright (c) 2017-2020 Vincent Quatrevieux

 */

package fr.quatrevieux.araknemu.game.handler.account;

import fr.quatrevieux.araknemu.common.session.SessionLog;

import fr.quatrevieux.araknemu.core.dbal.repository.EntityNotFoundException;

import fr.quatrevieux.araknemu.core.network.exception.CloseWithPacket;

import fr.quatrevieux.araknemu.core.network.parser.PacketHandler;

import fr.quatrevieux.araknemu.game.player.GamePlayer;

import fr.quatrevieux.araknemu.game.player.PlayerService;

import fr.quatrevieux.araknemu.game.player.event.GameJoined;

import fr.quatrevieux.araknemu.network.game.GameSession;

import fr.quatrevieux.araknemu.network.game.in.account.ChoosePlayingCharacter;

import fr.quatrevieux.araknemu.network.game.out.account.CharacterSelected;

import fr.quatrevieux.araknemu.network.game.out.account.CharacterSelectionError;

import fr.quatrevieux.araknemu.network.game.out.info.Error;

import fr.quatrevieux.araknemu.network.game.out.info.Information;

/**

 * Handle character select for entering game

 */

public final class SelectCharacter implements PacketHandler<GameSession, ChoosePlayingCharacter> {

    private final PlayerService service;

    public SelectCharacter(PlayerService service) {

        this.service = service;

    }

    @Override

    @SuppressWarnings("contracts.precondition") // Cannot prove that account is not null here

    public void handle(GameSession session, ChoosePlayingCharacter packet) {

        final GamePlayer player;

            if (session.player() != null) {

                throw new CloseWithPacket(new CharacterSelectionError());

            }

            try {

                player = service.load(session, packet.id());

                player.register(session);

            } catch (EntityNotFoundException e) {

                throw new CloseWithPacket(new CharacterSelectionError());

            }

        }

        session.send(new CharacterSelected(player));

        player.dispatch(new GameJoined());

        session.log().ifPresent(log -> log.setPlayerId(player.id()));

        session.send(Error.welcome());

        session.log().flatMap(SessionLog::last).ifPresent(log -> session.send(Information.lastLogin(log.startDate(), log.ipAddress())));

        session.send(Information.currentIpAddress(session.channel().address().getAddress().getHostAddress()));

    }

}