Collector.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2023 The Gridarta Developers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package net.sf.gridarta.commands;
 
import java.io.File;
import java.io.IOException;
import net.sf.gridarta.model.resource.AbstractResources;
import net.sf.japi.swing.misc.Progress;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class Collector {
 
    @NotNull
    private final AbstractResources<?, ?, ?> resources;
 
    @NotNull
    private final File collectedDirectory;
 
    @NotNull
    private final Progress progress;
 
    @Nullable
    private Thread thread;
 
    @Nullable
    private IOException ioException;
 
    public Collector(@NotNull final Progress progress, @NotNull final AbstractResources<?, ?, ?> resources, @NotNull final File collectedDirectory) {
        if (!resources.canWriteCollected()) {
            throw new IllegalArgumentException("can't collect already collected archetypes");
        }
        this.progress = progress;
        this.resources = resources;
        this.collectedDirectory = collectedDirectory;
    }
 
    public void start() {
        thread = new Thread(() -> {
            try {
                run();
            } catch (final IOException e) {
                ioException = e;
            }
        });
        thread.start();
    }
 
    public void waitUntilFinished() throws InterruptedException, IOException  {
        if (thread != null) {
            thread.join();
            thread = null;
        }
        if (ioException != null) {
            throw ioException;
        }
    }
 
    private void run() throws IOException {
        try {
            resources.writeCollected(progress, collectedDirectory);
        } finally {
            progress.finished();
        }
    }
 
}