001/*
002 * PlotSquared, a land and world management plugin for Minecraft.
003 * Copyright (C) IntellectualSites <https://intellectualsites.com>
004 * Copyright (C) IntellectualSites team and contributors
005 *
006 * This program is free software: you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation, either version 3 of the License, or
009 * (at your option) any later version.
010 *
011 * This program is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014 * GNU General Public License for more details.
015 *
016 * You should have received a copy of the GNU General Public License
017 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
018 */
019package com.plotsquared.core.util.task;
020
021import java.util.Iterator;
022import java.util.concurrent.CompletableFuture;
023
024public class ObjectTaskRunnable<T> implements Runnable {
025
026    private final CompletableFuture<Void> completionFuture = new CompletableFuture<>();
027
028    private final Iterator<T> iterator;
029    private final RunnableVal<T> task;
030
031    public ObjectTaskRunnable(
032            final Iterator<T> iterator,
033            final RunnableVal<T> task
034    ) {
035        this.iterator = iterator;
036        this.task = task;
037    }
038
039    public CompletableFuture<Void> getCompletionFuture() {
040        return this.completionFuture;
041    }
042
043    @Override
044    public void run() {
045        long start = System.currentTimeMillis();
046        boolean hasNext;
047        while ((hasNext = iterator.hasNext()) && System.currentTimeMillis() - start < 5) {
048            task.value = iterator.next();
049            task.run();
050        }
051        if (!hasNext) {
052            completionFuture.complete(null);
053        } else {
054            TaskManager.runTaskLater(this, TaskTime.ticks(1L));
055        }
056    }
057
058}