/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package org.apache.jmeter.control;

import java.io.Serializable;

import org.apache.jmeter.samplers.Sampler;
import org.apache.jmeter.testelement.property.LongProperty;
import org.apache.jmeter.testelement.property.StringProperty;

public class RunTime extends GenericController implements Serializable {

	private final static String SECONDS = "RunTime.seconds"; //$NON-NLS-1$

	private volatile long startTime = 0;

	private int loopCount = 0; // for getIterCount

	public RunTime() {
	}

	public void setRuntime(long seconds) {
		setProperty(new LongProperty(SECONDS, seconds));
	}

	public void setRuntime(String seconds) {
		setProperty(new StringProperty(SECONDS, seconds));
	}

	public long getRuntime() {
		try {
			return Long.parseLong(getPropertyAsString(SECONDS));
		} catch (NumberFormatException e) {
			return 0L;
		}
	}

	public String getRuntimeString() {
		return getPropertyAsString(SECONDS);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.apache.jmeter.control.Controller#isDone()
	 */
	public boolean isDone() {
		if (getRuntime() > 0 && getSubControllers().size() > 0) {
			return super.isDone();
		}
		return true; // Runtime is zero - no point staying around
	}

	private boolean endOfLoop() {
		return System.currentTimeMillis() - startTime >= 1000 * getRuntime();
	}

	public Sampler next() {
		if (startTime == 0) {
		    startTime = System.currentTimeMillis();
		}
		if (endOfLoop()) {
			reInitialize();// ??
			resetLoopCount();
			return null;
		}
		return super.next();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.apache.jmeter.control.GenericController#nextIsNull()
	 */
	protected Sampler nextIsNull() throws NextIsNullException {
		reInitialize();
		if (endOfLoop()) {
			resetLoopCount();
			return null;
		}
		return next();
	}

	protected void incrementLoopCount() {
		loopCount++;
	}

	protected void resetLoopCount() {
		loopCount = 0;
		startTime = 0;
	}

	/*
	 * This is needed for OnceOnly to work like other Loop Controllers
	 */
	protected int getIterCount() {
		return loopCount + 1;
	}

	protected void reInitialize() {
		setFirst(true);
		resetCurrent();
		incrementLoopCount();
		recoverRunningVersion();
	}
}