/*
 * MIT License
 * 
 * Copyright (c) 2005-2020 by Anton Kolonin, Aigents®
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package net.webstructor.core;

import net.webstructor.al.Period;

//TODO: make the Updater generic class for all Spidereres, Saver, etc.
public abstract class Scheduler {
	long period = Period.HOUR;
	long scheduled = 0;
	public void setPeriod(long period){
		this.period = period;
	}
	//TODO: make synchronized
	public void schedule(){
		scheduled = 0;
	}
	protected abstract void run();
	public void check(boolean force) {
		long time = System.currentTimeMillis();
		if (force || scheduled < time){
			run();
			scheduled = (scheduled == 0 ? time : scheduled) + period;
		}
	}
}

