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/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU 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 Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.topology.rule;

import org.gvsig.expressionevaluator.Expression;

import org.gvsig.expressionevaluator.ExpressionBuilder;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

import org.gvsig.expressionevaluator.ExpressionEvaluatorManager;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureReference;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.task.SimpleTaskStatus;

import org.gvsig.topology.lib.spi.AbstractTopologyRule;

import org.gvsig.topology.lib.spi.AbstractTopologyRuleAction;

import org.gvsig.topology.lib.api.ExecuteTopologyRuleActionException;

import org.gvsig.topology.lib.api.TopologyDataSet;

import org.gvsig.topology.lib.api.TopologyPlan;

import org.gvsig.topology.lib.api.TopologyReport;

import org.gvsig.topology.lib.api.TopologyReportLine;

import org.gvsig.topology.lib.api.TopologyRule;

import org.gvsig.topology.lib.api.TopologyRuleFactory;

/**

 *

 * @author jjdelcerro

 */

@SuppressWarnings("UseSpecificCatch")

public class MustNotOverlapPolygonRule extends AbstractTopologyRule {

    private class CreateFetureAction extends AbstractTopologyRuleAction {

        public CreateFetureAction() {

            super(

                    MustNotOverlapPolygonRuleFactory.NAME,

                    "CreateFeature",

                    "Create Feature",

                    "The Create Feature fix creates a new polygon feature out "

                    + "of the error shape and removes the portion of "

                    + "overlap from each of the features, causing the "

                    + "error to create a planar representation of the "

                    + "feature geometry. This fix can be applied to "

                    + "one or more selected Must Not Overlap errors."

            );

        }

        @Override

        public void execute(TopologyRule rule, TopologyReportLine line, DynObject parameters) {

            try {

                // TODO

            } catch (Exception ex) {

                throw new ExecuteTopologyRuleActionException(ex);

            }

        }

    }

    private class SubtractAction extends AbstractTopologyRuleAction {

        public SubtractAction() {

            super(

                    MustNotOverlapPolygonRuleFactory.NAME,

                    "Subtract",

                    "Subtract",

                    "The Subtract fix removes the overlapping portion of "

                    + "geometry from each feature that is causing the "

                    + "error and leaves a gap or void in its place. "

                    + "This fix can be applied to one or more selected "

                    + "Must Not Overlap errors."

            );

        }

        @Override

        public void execute(TopologyRule rule, TopologyReportLine line, DynObject parameters) {

            try {

                // TODO

            } catch (Exception ex) {

                throw new ExecuteTopologyRuleActionException(ex);

            }

        }

    }

    private class MergeAction extends AbstractTopologyRuleAction {

        public MergeAction() {

            super(

                    MustNotOverlapPolygonRuleFactory.NAME,

                    "Merge",

                    "Merge",

                    "The Merge fix adds the portion of overlap from one feature "

                    + "and subtracts it from the others that are "

                    + "violating the rule. You need to pick the feature "

                    + "that receives the portion of overlap using the "

                    + "Merge dialog box. This fix can be applied to one "

                    + "Must Not Overlap error only."

            );

        }

        @Override

        public void execute(TopologyRule rule, TopologyReportLine line, DynObject parameters) {

            try {

                // TODO

            } catch (Exception ex) {

                throw new ExecuteTopologyRuleActionException(ex);

            }

        }

    }

    private String geomName;

    private Expression expression = null;

    private ExpressionBuilder expressionBuilder = null;

    public MustNotOverlapPolygonRule(

            TopologyPlan plan,

            TopologyRuleFactory factory,

            double tolerance,

            String dataSet1

    ) {

        super(plan, factory, tolerance, dataSet1);

        this.addAction(new CreateFetureAction());

        this.addAction(new MergeAction());

        this.addAction(new SubtractAction());

    }

    @Override

    protected void check(SimpleTaskStatus taskStatus, TopologyReport report, Feature feature1) throws Exception {

        try {

            if (this.expression == null) {

                ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager();

                this.expression = manager.createExpression();

                this.expressionBuilder = manager.createExpressionBuilder();

                this.geomName = feature1.getType().getDefaultGeometryAttributeName();

            }

            Geometry polygon = feature1.getDefaultGeometry();

            if( polygon==null ) {

                return;

            }

            TopologyDataSet theDataSet = this.getDataSet1();

            if (theDataSet.getSpatialIndex() != null) {

                for (FeatureReference reference : theDataSet.query(polygon)) {

                    if (reference.equals(feature1.getReference())) {

                        continue;

                    }

                    Feature feature = reference.getFeature();

                    Geometry otherPolygon = feature.getDefaultGeometry();

                    if (otherPolygon!=null && polygon.overlaps(otherPolygon)) {;

                        Geometry error = otherPolygon.difference(polygon);

                        report.addLine(this,

                                theDataSet,

                                null,

                                polygon,

                                error,

                                feature1.getReference(),

                                null,

                                false,

                                "The polygon overlay with others."

                        );

                        break;

                    }

                }

            } else {

                this.expression.setPhrase(

                        this.expressionBuilder.ifnull(

                                this.expressionBuilder.column(this.geomName),

                                this.expressionBuilder.constant(false),

                                this.expressionBuilder.ST_Overlaps(

                                        this.expressionBuilder.column(this.geomName),

                                        this.expressionBuilder.geometry(polygon)

                                )

                        ).toString()

                );

                Feature feature = theDataSet.findFirst(this.expression);

                if ( feature != null) {

                    Geometry otherPolygon = feature.getDefaultGeometry();

                    Geometry error = null;

                    if( otherPolygon!=null ) {

                        error = polygon.difference(otherPolygon);

                    }

                    report.addLine(this,

                            theDataSet,

                            null,

                            polygon,

                            error,

                            feature1.getReference(),

                            null,

                            false,

                            "The polygon overlay with others."

                    );

                }

            }

        } catch (Exception ex) {

            LOGGER.warn("Can't check feature.", ex);

        } finally {

        }

    }

}