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/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2021 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.ExpressionUtils;

import org.gvsig.expressionevaluator.GeometryExpressionBuilder;

import org.gvsig.expressionevaluator.GeometryExpressionUtils;

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

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

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

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.task.SimpleTaskStatus;

import org.gvsig.tools.visitor.VisitCanceledException;

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

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

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

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

/**

 *

 * @author jjdelcerro

 */

@SuppressWarnings("UseSpecificCatch")

public class PolygonContainsOnePointRule extends AbstractTopologyRule {

    private String geomName;

    private Expression expression = null;

    private GeometryExpressionBuilder expressionBuilder = null;

    public PolygonContainsOnePointRule() {

        // for persistence only

    }

    public PolygonContainsOnePointRule(

            TopologyRuleFactory factory,

            double tolerance,

            String dataSet1,

            String dataSet2

    ) {

        super(factory, tolerance, dataSet1, dataSet2);

    }

    @Override

    public long getSteps() {

        return this.getDataSet1().getSize()+this.getDataSet2().getSize();

    }

    @Override

    public void execute(final SimpleTaskStatus taskStatus, final TopologyReport report) {

        try {

            this.getDataSet1().accept((final Object o1) -> {

                if (taskStatus.isCancellationRequested()) {

                    throw new VisitCanceledException();

                }

                taskStatus.incrementCurrentValue();

                try {

                    check(taskStatus, report, (Feature) o1);

                } catch (Exception ex) {

                    throw new RuntimeException(ex);

                }

            });

            this.getDataSet2().accept((final Object o1) -> {

                if (taskStatus.isCancellationRequested()) {

                    throw new VisitCanceledException();

                }

                taskStatus.incrementCurrentValue();

                try {

                    check2(taskStatus, report, (Feature) o1);

                } catch (Exception ex) {

                    throw new RuntimeException(ex);

                }

            });

        } catch (VisitCanceledException ex) {

            // return;

        }

    }

    @Override

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

        FeatureSet set = null;

        try {

            FeatureStore store2 = this.getDataSet2().getFeatureStore();

            if (this.expression == null) {

                this.expression = ExpressionUtils.createExpression();

                this.expressionBuilder = GeometryExpressionUtils.createExpressionBuilder();

                this.geomName = store2.getDefaultFeatureType().getDefaultGeometryAttributeName();

            }

            Geometry polygon = feature1.getDefaultGeometry();

            double theTolerance = getTolerance();

            if(theTolerance > 0){

                polygon = polygon.buffer(theTolerance);

            }

            TopologyDataSet theDataSet = this.getDataSet2();

            int contained = 0;

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

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

                    Feature feature2 = featureReference.getFeature();

                    Geometry otherPoint = feature2.getDefaultGeometry();

                    if (otherPoint != null && polygon.contains(otherPoint)) {

                        contained++;

                        break;

                    }

                }

            } else {

                this.expression.setPhrase(

                        this.expressionBuilder.ifnull(

                                this.expressionBuilder.column(this.geomName),

                                this.expressionBuilder.constant(false),

                                this.expressionBuilder.ST_Contains(

                                        this.expressionBuilder.geometry(polygon),

                                        this.expressionBuilder.column(this.geomName)

                                )

                        ).toString()

                );

                FeatureSet featSet = theDataSet.getFeatureStore().getFeatureSet(this.expression);

                contained = featSet.size();

            }

            if (contained <= 0) {

                I18nManager i18n = ToolsLocator.getI18nManager();

                report.addLine(this,

                        this.getDataSet1(),

                        this.getDataSet2(),

                        polygon,

                        polygon,

                        feature1.getReference(),

                        null,

                        false,

                        i18n.getTranslation("_The_polygon_does_not_contain_any_points")

                );

            } else if (contained > 1) {

                I18nManager i18n = ToolsLocator.getI18nManager();

                report.addLine(this,

                        this.getDataSet1(),

                        this.getDataSet2(),

                        polygon,

                        polygon,

                        feature1.getReference(),

                        null,

                        false,

                        i18n.getTranslation("_The_polygon_contains_more_than_a_point")

                );

            }

        } catch (Exception ex) {

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

            addCodeException(report, feature1, ex);

        } finally {

            if (set != null) {

                set.dispose();

            }

        }

    }

    protected void check2(SimpleTaskStatus taskStatus, TopologyReport report, Feature feature2) throws Exception {

        FeatureSet set = null;

        try {

            TopologyDataSet theDataSet2 = this.getDataSet2();

            TopologyDataSet theDataSet1 = this.getDataSet1();

            FeatureStore otherStore = theDataSet1.getFeatureStore();

            if (this.expression == null) {

                this.expression = ExpressionUtils.createExpression();

                this.expressionBuilder = GeometryExpressionUtils.createExpressionBuilder();

                this.geomName = otherStore.getDefaultFeatureType().getDefaultGeometryAttributeName();

            }

            Geometry point = feature2.getDefaultGeometry();

            if (theDataSet1.getSpatialIndex() != null) {

                boolean contained = false;

                for (FeatureReference otherFeatureReference : theDataSet1.query(point)) {

                    Feature otherFeature = otherFeatureReference.getFeature();

                    Geometry otherPolygon = otherFeature.getDefaultGeometry();

                    if( otherPolygon!=null && otherPolygon.contains(point) ) {

                        contained = true;

                        break;

                    }

                }

                if( !contained ) {

                    I18nManager i18n = ToolsLocator.getI18nManager();

                    report.addLine(this,

                            theDataSet1,

                            theDataSet2,

                            point,

                            point,

                            null,

                            feature2.getReference(),

                            false,

                            i18n.getTranslation("_Point_is_not_contained_in_a_polygon")

                    );

                }

            } else {

                this.expression.setPhrase(

                        this.expressionBuilder.ifnull(

                                this.expressionBuilder.column(this.geomName),

                                this.expressionBuilder.constant(false),

                                this.expressionBuilder.ST_Contains(

                                        this.expressionBuilder.column(this.geomName),

                                        this.expressionBuilder.geometry(point)

                                )

                        ).toString()

                );

                if (theDataSet1.findFirst(this.expression) == null) {

                    I18nManager i18n = ToolsLocator.getI18nManager();

                    report.addLine(this,

                            theDataSet1,

                            theDataSet2,

                            point,

                            point,

                            null,

                            feature2.getReference(),

                            false,

                            i18n.getTranslation("_Point_is_not_contained_in_a_polygon")

                    );

                }

            }

        } catch (Exception ex) {

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

            addCodeException(report, feature2, ex);

        } finally {

            if (set != null) {

                set.dispose();

            }

        }

    }

}