org.eclipse.osbp.utils/src/org/eclipse/osbp/utils/fillertext/provider/DateProvider.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * All rights reserved. This program and the accompanying materials           
 * are made available under the terms of the Eclipse Public License v1.0       
 * which accompanies this distribution, and is available at                  
 * http://www.eclipse.org/legal/epl-v10.html                                 
 *                                                                            
 * Contributors:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.utils.fillertext.provider;

import org.joda.time.DateTime;

public class DateProvider {

	private final BaseProvider fBaseProvider;
	
	public DateProvider(BaseProvider baseProvider) {
		fBaseProvider = baseProvider;
	}

	public DateTime randomDateInThePast(int yearsToPast) {
		DateTime now = DateTime.now();
		return randomDateBetweenTwoDates(
			firstDayOfYear(now.getYear()-yearsToPast),
			now
		);
	}

	public DateTime randomDateInTheFuture(int yearsInFuture) {
		DateTime now = DateTime.now();
		return randomDateBetweenTwoDates(
			now,
			new DateTime(firstDayOfYear(now.getYear()+yearsInFuture+1).getMillis() - 1)
		);
	}

	public DateTime randomDateBetweenYears(int startYear, int endYear) {
		return randomDateBetweenTwoDates(
			firstDayOfYear(startYear),
			new DateTime(firstDayOfYear(endYear+1).getMillis() - 1)
		);
	}
	
	private DateTime firstDayOfYear(int year) {
		return new DateTime(year, 1, 1, 0, 0);
	}
	
	private DateTime randomDateBetweenTwoDates(DateTime from, DateTime to) {
		return new DateTime(fBaseProvider.randomBetween(from.getMillis(), to.getMillis()));
	}
}