/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
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 *
 * 5. Products derived from this software may not be called "Apache"
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 *
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.tools.ant.taskdefs.optional.iplanet;

import org.apache.tools.ant.types.Commandline;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.taskdefs.Execute;
import org.apache.tools.ant.taskdefs.LogStreamHandler;

import java.util.Vector;
import java.io.File;

/**
 * @author <a href="mailto:martin.gee@icsynergy.com">Martin Gee</a>
 */
public class IASControlTask extends Task {

	public static final String RESTART	= "restart";
	public static final String START	= "start";
	public static final String STOP		= "stop";
	public static final String KILL		= "kill";

	/**
	 *
	 */
	public void setIas_home(File ias_home) {
		if (!ias_home.isDirectory()) {
			throw new BuildException("ias_home directory " + 
								 ias_home.getPath() + " is not valid");
		}
		_ias_homeDirectory = ias_home;
	}

	/**
	 *
	 */
	public void setVerbose(boolean verbose) {
		_verbose = verbose;
	}

	/**
	 *
	 */
	public Controllable createRestart() {
		Controllable controllable = new Controllable(Controllable.RESTART);
		_controllableList.addElement(controllable);
		return controllable;
	}

	/**
	 *
	 */
	public Controllable createStart() {
		Controllable controllable = new Controllable(Controllable.START);
		_controllableList.addElement(controllable);
		return controllable;
	}

	/**
	 *
	 */
	public Controllable createStop() {
		Controllable controllable = new Controllable(Controllable.STOP);
		_controllableList.addElement(controllable);
		return controllable;
	}

	/**
	 *
	 */
	public Controllable createKill() {
		Controllable controllable = new Controllable(Controllable.KILL);
		_controllableList.addElement(controllable);
		return controllable;
	}

	/**
	 *
	 */
	public void execute() 
	throws BuildException
	{
		control();
	}

	/**
	 *
	 */
	protected void control(String cmd, Controllable controllable)
	throws BuildException
	{
		try {
			Commandline cmdline = new Commandline();

			// check if we have the path to iAS/ias
			if (_ias_homeDirectory != null) {
				cmdline.setExecutable(_ias_homeDirectory.toString()+"/bin/iascontrol");
			} else {	 // hope ejbc is in the path!
				cmdline.setExecutable("iascontrol");
			}

			cmdline.createArgument().setValue(cmd);

			IASInstance instance = controllable.getInstance();

			if (instance != null) {
				if (instance.getName() != null) {
					cmdline.createArgument().setValue("-instance");
					cmdline.createArgument().setValue(instance.getName());
				} else {
					cmdline.createArgument().setValue("-user");
					cmdline.createArgument().setValue(instance.getUser());
					cmdline.createArgument().setValue("-password");
					cmdline.createArgument().setValue(instance.getPassword());
					cmdline.createArgument().setValue("-host");
					cmdline.createArgument().setValue(instance.getHost());
					cmdline.createArgument().setValue("-port");
					cmdline.createArgument().setValue(""+instance.getPort());
				}
			}

			Execute exe = new Execute(new LogStreamHandler(this,
												  			Project.MSG_INFO,
												  			Project.MSG_WARN));
			
			exe.setAntRun(project);
			exe.setWorkingDirectory(project.getBaseDir());
			exe.setCommandline(cmdline.getCommandline());

			if (_verbose) {
				log("CMDLINE:"+cmdline.toString());
			}

			if (0 != exe.execute()) {
				throw new BuildException("iASControl ERROR");
			}

			int pause = controllable.getPause();
			if (pause > 0) {
				try {
					log("PAUSING FOR: "+ pause +" SECONDS");
					Thread.sleep(pause * 1000);
				} catch (InterruptedException e) {
					if (_verbose) {
						e.printStackTrace();
					}
					throw new BuildException("ERROR OCCURRED WHILE PAUSING");
				}
			}
		} catch (Exception e) {
			if (_verbose) {
				e.printStackTrace();
			}
			throw new BuildException("IASControl EXCEPTION");
		}
	}

	/**
	 *
	 */
	protected void control()
	throws BuildException
	{
		for (int i = 0; i < _controllableList.size(); i++) {
			Controllable controllable = 
			(Controllable) _controllableList.elementAt(i);
			switch (controllable.type()) {
			case Controllable.RESTART:
				{
					int pause = controllable.getPause();
					if (pause < 1) {
						controllable.setPause(15);
					}

					control(STOP, controllable);
					controllable.setPause(-1);
					control(START, controllable);
				}
				break;
			case Controllable.START:
				control(START, controllable);
				break;
			case Controllable.STOP:
				control(STOP, controllable);
				break;
			case Controllable.KILL:
				control(KILL, controllable);
				break;
			}
		}
	}

	// directory where iAS/ias lives
	private File _ias_homeDirectory;

	// debug
	private boolean _verbose;
	private Vector _controllableList = new Vector();
}