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/*
 * #%L
 * The AIBench Shell Plugin
 * %%
 * Copyright (C) 2006 - 2017 Daniel Glez-Peña and Florentino Fdez-Riverola
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */
package es.uvigo.ei.sing.aibench.shell;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Vector;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

import es.uvigo.ei.aibench.core.Core;
import es.uvigo.ei.aibench.core.ProgressHandler;
import es.uvigo.ei.aibench.core.clipboard.ClipboardItem;
import es.uvigo.ei.aibench.core.clipboard.ClipboardListener;


public class ShellProgressHandler implements ProgressHandler {
	static Logger logger = Logger.getLogger("AIBench Shell");

	public static Vector HANDLERS = new Vector();
	private boolean finished = false;
	private boolean error = false;
	
	private String name;

	private List results = null;

	private HashMap clipboardItemsMapping = new HashMap();

	public ShellProgressHandler(String operationName) {
		this.name = operationName;
		
		ClipboardListener listener =new ClipboardListener() {

			public void elementRemoved(ClipboardItem item){
				if (results == null){
					//maybe the operation finished with error.
					return;
				}
				for (int i = results.size()-1; i>=0; i--){
					if (results.get(i)==item.getUserData()){
						
						
						results.remove(i);
					}							
				}
				
				clipboardItemsMapping.remove(item.getUserData());
				
			}
			public void elementAdded(ClipboardItem arg0) {
				clipboardItemsMapping.put(arg0.getUserData(), arg0);
			}
		};
		Core.getInstance().getClipboard().addClipboardListener(listener);
		HANDLERS.add(this);
				
	}

	public void validationError(Throwable arg0) {

	}

	public void operationStart(Object arg0, Object arg1) {

	}

	public synchronized void waitFinished(String callerName) {
		if (finished == false)
			try {
				if (logger.getEffectiveLevel().equals(Level.DEBUG))logger.debug(callerName + " ("+Thread.currentThread()+") waiting for \"" + this.name +" ("+this+") "
						+ "\" to finish");
				wait();
				if (logger.getEffectiveLevel().equals(Level.DEBUG))logger.debug(callerName +" ("+Thread.currentThread()+") waked up ("+this+")");
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
	}

	public synchronized Object getResultInClipboard(int[] route){
		return getResultInClipboard(route, "");
	}
	public synchronized Object getResultInClipboard(int[] route, String callerName) {
		this.waitFinished(callerName);
		
		if (error){
			logger.warn("Getting results from an operation who finished with error, a crash may happen.........");
		}
		
		ClipboardItem current = this.results.get(route[0]);
		
		for (int i = 1; i subItems = Core.getInstance().getClipboard().getArraySubItems(current);
			if (subItems == null) subItems = Core.getInstance().getClipboard().getListSubItems(current);
			if (subItems == null) subItems = Core.getInstance().getClipboard().getComplexSubItems(current);
			if (subItems == null) throw new RuntimeException("ClipboardItem not found in this route");
			
			current = subItems.get(route[i]);
		}
		return current;
	}

	public synchronized void operationFinished(List