/*******************************************************************************
 * Copyright (c) 2004-2008 Andras Schmidt, Andras Balogh, Istvan Rath and Daniel Varro
 * 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:
 *    Andras Schmidt, Andras Balogh, Istvan Rath - initial API and implementation
 *******************************************************************************/

package org.eclipse.viatra2.modelChecker;

import java.util.HashSet;
import java.util.Set;

import org.eclipse.viatra2.core.IEntity;
import org.eclipse.viatra2.core.IModelElement;
import org.eclipse.viatra2.core.IRelation;
import org.eclipse.viatra2.modelChecker.impl.ConsistencyErrorMessages;
import org.eclipse.viatra2.tags.InfoTag;
import org.eclipse.viatra2.tags.TagKind;

/**
 * POJO implementing problem carriers.
 * @author Andras Schmidt, Istvan Rath
 *
 */
public class Problem extends InfoTag implements IProblem {


	IModelElement endPoint;

	IRelation rel;

	IRelation relType;
	
	IEntity otherEntity;

	EProblemType problemType;

	public Problem(IModelElement point, IRelation rel, IRelation type,
			EProblemType problemType) {
		super("", null, 3, 1);
		endPoint = point;
		this.rel = rel;
		relType = type;
		otherEntity = null;
		this.problemType = problemType;
		generateErrorMessage();
	}

	public Problem(IModelElement point, IRelation rel, IEntity otherEntity,
	EProblemType problemType) {
		super("", null, 3, 1);
		endPoint = point;
		this.rel = rel;
		relType = null;
		this.otherEntity = otherEntity;
		this.problemType = problemType;
		generateErrorMessage();
	}
	
	public IModelElement getEndPoint() {
		return endPoint;
	}

	public IRelation getRelation() {
		return rel;
	}

	public IRelation getRelationType() {
		return relType;
	}

	public EProblemType getProblemType() {
		return problemType;
	}

	public String getMessage() {
		return message;
	}

	protected void generateErrorMessage() {
		if (problemType.compareTo(EProblemType.INVALID_RELATION_SOURCE_TYPE) == 0) {
			message = ConsistencyErrorMessages.INVALID_RELATION_SOURCE_TYPE;
			String[] context = new String[] { endPoint.getFullyQualifiedName(),
					rel.getFullyQualifiedName(),
					relType.getFrom().getFullyQualifiedName(),
					relType.getFullyQualifiedName(), };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.INVALID_RELATION_TARGET_TYPE) == 0) {
			message = ConsistencyErrorMessages.INVALID_RELATION_TARGET_TYPE;
			String[] context = new String[] { endPoint.getFullyQualifiedName(),
					rel.getFullyQualifiedName(),
					relType.getTo().getFullyQualifiedName(),
					relType.getFullyQualifiedName(), };
			bind(context);
		} else if (problemType.compareTo(EProblemType.AGGREGATION_INVALID) == 0) {
			message = ConsistencyErrorMessages.AGGREGATION_INVALID;
			String[] context = new String[] { relType.getFullyQualifiedName(),
					rel.getFullyQualifiedName(),
					rel.getTo().getFullyQualifiedName(),
					endPoint.getFullyQualifiedName() };
			bind(context);
		} else if (problemType.compareTo(EProblemType.INVALID_RELATION_SOURCE) == 0) {
			message = ConsistencyErrorMessages.INVALID_RELATION_SOURCE;
			String[] context = new String[] { rel.getFullyQualifiedName() };
			bind(context);
		} else if (problemType.compareTo(EProblemType.INVALID_RELATION_TARGET) == 0) {
			message = ConsistencyErrorMessages.INVALID_RELATION_TARGET;
			String[] context = new String[] { rel.getFullyQualifiedName() };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.OUTGOING_MULTIPLICITY_CONSTRAINT_VIOLATED) == 0) {
			message = ConsistencyErrorMessages.OUTGOING_MULTIPLICITY_CONSTRAINT_VIOLATED;
			String[] context = new String[] { rel.getFullyQualifiedName(),
					relType.getMultiplicity().toString(),
					endPoint.getFullyQualifiedName() };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.INCOMING_MULTIPLICITY_CONSTRAINT_VIOLATED) == 0) {
			message = ConsistencyErrorMessages.INCOMING_MULTIPLICITY_CONSTRAINT_VIOLATED;
			String[] context = new String[] { rel.getFullyQualifiedName(),
					relType.getMultiplicity().toString(),
					endPoint.getFullyQualifiedName() };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.MULTIPLICITY_REFINEMENT_INVALID) == 0) {
			message = ConsistencyErrorMessages.MULTIPLICITY_REFINEMENT_INVALID;
			String[] context = new String[] { rel.getFullyQualifiedName(),
					rel.getMultiplicity().toString(),
					relType.getFullyQualifiedName(),
					relType.getMultiplicity().toString() };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.AGGREGATION_REFINEMENT_INVALID) == 0) {
			message = ConsistencyErrorMessages.AGGREGATION_REFINEMENT_INVALID;
			String[] context = new String[] { rel.getFullyQualifiedName(),
					relType.getFullyQualifiedName() };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.INVALID_REFINEMENT_SOURCE_TYPE) == 0) {
			message = ConsistencyErrorMessages.INVALID_REFINEMENT_SOURCE_TYPE;
			String[] context = new String[] { rel.getFullyQualifiedName(),
					relType.getFullyQualifiedName() };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.INVALID_REFINEMENT_TARGET_TYPE) == 0) {
			message = ConsistencyErrorMessages.INVALID_REFINEMENT_TARGET_TYPE;
			String[] context = new String[] { rel.getFullyQualifiedName(),
					relType.getFullyQualifiedName() };
			bind(context);
		} else if (problemType
				.compareTo(EProblemType.INVALID_REFINEMENT) == 0) {
			message = ConsistencyErrorMessages.INVALID_REFINEMENT;
			String[] context = new String[] { rel.getFullyQualifiedName(),
					otherEntity.getFullyQualifiedName() };
			bind(context);
		} 

	}

	// try {
	// String str = (String)
	// this.getClass().getDeclaredField(problemType.name()).get(null);
	// message = str;
	// } catch (IllegalArgumentException e) {
	// e.printStackTrace();
	// message = "";
	// } catch (SecurityException e) {
	// e.printStackTrace();
	// message = "";
	// } catch (IllegalAccessException e) {
	// e.printStackTrace();
	// message = "";
	// } catch (NoSuchFieldException e) {
	// e.printStackTrace();
	// message = "";
	// }

	/**
	 * Binding the '{N}' (N = 1..4) strings to contextual conditions in
	 * 'context'
	 * 
	 * @param context
	 *            : array of context-sensitive Strings
	 */
	public void bind(String[] context) {
		if (context.length >= 1) {
			message = message.replace("{1}", context[0]);
		}
		if (context.length >= 2) {
			message = message.replace("{2}", context[1]);
		}
		if (context.length >= 3) {
			message = message.replace("{3}", context[2]);
		}
		if (context.length >= 4) {
			message = message.replace("{4}", context[3]);
		}
	}

	public Set<IModelElement> getAssociatedElements() {
		HashSet<IModelElement> r = new HashSet<IModelElement>();
		if (this.endPoint!=null) r.add(endPoint);
		if (this.rel!=null) r.add(this.rel);
		if (this.relType!=null) r.add(this.relType);
		return r;
	}

	public TagKind getKind() {
		return TagKind.MODELING_PROBLEM;
	}
}