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) 2017-2019 Vincent Quatrevieux

 */

package fr.quatrevieux.araknemu.game.exploration.interaction.exchange.player;

import fr.quatrevieux.araknemu.game.exploration.ExplorationPlayer;

import fr.quatrevieux.araknemu.game.exploration.exchange.ExchangeType;

import fr.quatrevieux.araknemu.game.exploration.exchange.player.PlayerExchangeParty;

import fr.quatrevieux.araknemu.game.exploration.interaction.Interaction;

import fr.quatrevieux.araknemu.game.exploration.interaction.exchange.ExchangeInteraction;

import fr.quatrevieux.araknemu.game.exploration.interaction.request.Invitation;

import fr.quatrevieux.araknemu.game.exploration.interaction.request.InvitationHandler;

import fr.quatrevieux.araknemu.game.exploration.interaction.request.RequestDialog;

import fr.quatrevieux.araknemu.game.exploration.interaction.request.TargetRequestDialog;

import fr.quatrevieux.araknemu.game.exploration.map.ExplorationMap;

import fr.quatrevieux.araknemu.network.game.out.exchange.ExchangeLeaved;

import fr.quatrevieux.araknemu.network.game.out.exchange.ExchangeRequestError;

import fr.quatrevieux.araknemu.network.game.out.exchange.ExchangeRequested;

import org.checkerframework.checker.nullness.qual.Nullable;

/**

 * Request for a player exchange

 *

 * The request store the two parties

 */

public final class PlayerExchangeRequest implements ExchangeInteraction, InvitationHandler {

    private final Invitation invitation;

    @SuppressWarnings("method.invocation")

    public PlayerExchangeRequest(ExplorationPlayer initiator, ExplorationPlayer target) {

        invitation = invitation(initiator, target);

    }

    @Override

    public @Nullable Interaction start() {

        return invitation.start();

    }

    @Override

    public void stop() {

        invitation.stop();

    }

    @Override

    public void leave() {

        invitation.cancel(initiatorDialog(invitation));

    }

    @Override

    public void acknowledge(Invitation invitation) {

        invitation.send(new ExchangeRequested(invitation.initiator(), invitation.target(), ExchangeType.PLAYER_EXCHANGE));

    }

    @Override

    public void refuse(Invitation invitation, RequestDialog dialog) {

        invitation.send(ExchangeLeaved.cancelled());

    }

    @Override

    public void accept(Invitation invitation, TargetRequestDialog dialog) {

        for (PlayerExchangeParty party : PlayerExchangeParty.make(invitation.initiator(), invitation.target())) {

            party.start();

        }

    }

    @Override

    public RequestDialog initiatorDialog(Invitation invitation) {

        return new InitiatorExchangeRequestDialog(invitation);

    }

    @Override

    public TargetRequestDialog targetDialog(Invitation invitation) {

        return new TargetExchangeRequestDialog(invitation);

    }

    @Override

    public boolean check(Invitation invitation) {

        if (!invitation.initiator().restrictions().canExchange() || !invitation.target().restrictions().canExchange()) {

            return error(invitation, ExchangeRequestError.Error.CANT_EXCHANGE);

        }

        if (invitation.target().interactions().busy()) {

            if (invitation.target().interactions().get(Interaction.class) instanceof ExchangeInteraction) {

                return error(invitation, ExchangeRequestError.Error.ALREADY_EXCHANGE);

            }

            return error(invitation, ExchangeRequestError.Error.CANT_EXCHANGE);

        }

        final ExplorationMap map = invitation.initiator().map();

        if (map == null || !map.equals(invitation.target().map())) {

            return error(invitation, ExchangeRequestError.Error.CANT_EXCHANGE);

        }

        if (invitation.initiator().inventory().overweight()) {

            return error(invitation, ExchangeRequestError.Error.OVERWEIGHT);

        }

        return true;

    }

    /**

     * Send error

     */

}