/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2011 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.operator.ports.metadata;


import java.util.LinkedList;
import java.util.List;

import com.rapidminer.operator.IOObject;
import com.rapidminer.operator.ports.InputPort;
import com.rapidminer.operator.ports.OutputPort;
import com.rapidminer.operator.ports.quickfix.AddCompatibleOperatorQuickFix;
import com.rapidminer.operator.ports.quickfix.ConnectToQuickFix;
import com.rapidminer.operator.ports.quickfix.QuickFix;


/** Indicates that input for a port was missing or had the wrong type.
 * 
 * @author Simon Fischer
 */
public class InputMissingMetaDataError extends SimpleMetaDataError {

	private InputPort inputPort;
	private Class<? extends IOObject> desiredClass;

	public InputMissingMetaDataError(InputPort inputPort, Class<? extends IOObject> desiredClazz) {
		this(inputPort, desiredClazz, null);
	}

	public InputMissingMetaDataError(InputPort inputPort, 
			Class<? extends IOObject> desiredClass, 
			Class<? extends IOObject> receivedClass) {
		super(Severity.ERROR,
				inputPort,
				(receivedClass == null ? "input_missing" : "expected"),
				(receivedClass == null ? new Object[] { inputPort.getSpec() } : new Object[] { desiredClass.getSimpleName(), receivedClass.getSimpleName() }));
		this.inputPort = inputPort;
		this.desiredClass = desiredClass;
	}


	@Override
	public List<QuickFix> getQuickFixes() {
		List<QuickFix> fixes = new LinkedList<QuickFix>();
		if (desiredClass != null) {
			for (OutputPort outputPort : inputPort.getPorts().getOwner().getConnectionContext().getAllOutputPorts()) {
				if (!outputPort.isConnected() && (outputPort.getMetaData() != null) && desiredClass.isAssignableFrom(outputPort.getMetaData().getObjectClass())) {
					fixes.add(new ConnectToQuickFix(inputPort, outputPort));
				}
			}				

			fixes.add(new AddCompatibleOperatorQuickFix(inputPort, desiredClass));
		}
		return fixes;
	}
}