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package org.gvsig.fmap.mapcontext.layers.vectorial;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.dal.exception.DataEvaluatorRuntimeException;

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

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

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;

import org.gvsig.fmap.geom.operation.towkt.ToWKT;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.tools.evaluator.AbstractEvaluator;

import org.gvsig.tools.evaluator.EvaluatorData;

import org.gvsig.tools.evaluator.EvaluatorException;

public class CrossEnvelopeEvaluator extends AbstractEvaluator {

        private Envelope envelope;

        private String geomName;

        private Envelope envelopeTrans;

        private boolean isDefault;

        private String srs;

        private String envelopeWKT;

        public CrossEnvelopeEvaluator(Envelope envelope,

                        IProjection envelopeProjection, FeatureType featureType,

                        String geomName) {

                FeatureAttributeDescriptor fad = (FeatureAttributeDescriptor) featureType

                                .get(geomName);

                this.isDefault = featureType.getDefaultGeometryAttributeName().equals(

                                geomName);

                this.envelope = envelope;

                // this.srs = envelopeProjection.getAbrev();

                // this.projection=CRSFactory.getCRS(fad.getSRS());

                // this.envelopeProjection=envelopeProjection;

//                ICoordTrans ct = null;

//                if (!this.srs.equals(fad.getSRS())) { // FIXME comparaci?n

//                        ct = envelopeProjection.getCT(fad.getSRS());

//                }

//                if (ct != null) {

//                        this.envelopeTrans = envelope.convert(ct);

//                } else {

                        this.envelopeTrans = envelope;

//                }

                this.geomName = geomName;

                this.srs = envelopeProjection.getAbrev();

                this.getFieldsInfo().addMatchFieldValue(geomName, envelopeTrans);

        }

        public Object evaluate(EvaluatorData data) throws EvaluatorException {

                if (isDefault) {

                        Feature feature = (Feature) data.getContextValue("feature");

                        //                        return new Boolean(envelopeTrans.contains(feature

                        //                                        .getDefaultEnvelope())

                        //                                        || envelopeTrans.intersects(feature.getDefaultEnvelope()));

//                        System.out.println("== Filter[" + envelopeTrans.getLowerCorner()[0]

//                                        + "," + envelopeTrans.getLowerCorner()[1] + "] ["

//                                        + envelopeTrans.getUpperCorner()[0] + ","

//                                        + envelopeTrans.getUpperCorner()[1] + "]");

                        Envelope featureEnvelope = feature.getDefaultEnvelope();

//                        System.out.println("== Geom ["

//                                        + featureEnvelope.getLowerCorner()[0]

//                                        + "," + featureEnvelope.getLowerCorner()[1] + "] ["

//                                        + featureEnvelope.getUpperCorner()[0] + ","

//                                        + featureEnvelope.getUpperCorner()[1] + "]");

                        Boolean r = new Boolean(envelopeTrans.intersects(featureEnvelope));

//                        System.out.println("==3 "+r);

                        return r;

                } else {

                        Geometry geom = (Geometry) data.getDataValue(geomName);

                        //                        return new Boolean(envelopeTrans.contains(geom.getEnvelope())

                        //                                        || envelopeTrans.intersects(geom.getEnvelope()));

                        return new Boolean(envelopeTrans.intersects(geom.getEnvelope()));

                }

        }

        public String getName() {

                return "contains in envelope";

        }

        public String getSQL() {

                if (envelopeWKT == null) {

                        try {

                                envelopeWKT = (String) envelope.getGeometry().invokeOperation(

                                                ToWKT.CODE,

                                                null);

                        } catch (GeometryOperationNotSupportedException e) {

                                throw new DataEvaluatorRuntimeException(e);

                        } catch (GeometryOperationException e) {

                                throw new DataEvaluatorRuntimeException(e);

                        }

                }

                return " intersects(GeomFromText('" + envelopeWKT + "', '" + srs

                                + "'), envelope(" + geomName + ")) ";

        }

}