package com.ximple.eofms.jobs.context.postgis;

import java.io.IOException;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.transaction.util.CommonsLoggingLogger;
import org.apache.commons.transaction.util.LoggerFacade;
import org.geotools.data.DataStore;
import org.geotools.data.Transaction;
import org.geotools.feature.Feature;
import org.geotools.feature.FeatureType;
import org.geotools.feature.FeatureTypeBuilder;
import org.geotools.feature.IllegalAttributeException;
import org.geotools.feature.SchemaException;
import org.postgresql.util.PSQLException;

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Envelope;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.GeometryFactory;

import com.ximple.eofms.util.DefaultColorTable;
import com.ximple.eofms.util.FeatureTypeBuilderUtil;
import com.ximple.eofms.util.TPCLIDConverter;
import com.ximple.eofms.util.TWD97GeometryConverterDecorator;
import com.ximple.eofms.util.TWDDatumConverter;
import com.ximple.io.dgn7.Element;
import com.ximple.io.dgn7.FrammeAttributeData;
import com.ximple.io.dgn7.TextElement;
import com.ximple.io.dgn7.UserAttributeData;

public class IndexDgnConvertPostGISJobContext extends AbstractDgnToPostGISJobContext
{
    static final Log logger = LogFactory.getLog(IndexDgnConvertPostGISJobContext.class);
    static final LoggerFacade sLogger = new CommonsLoggingLogger(logger);
    static final GeometryFactory geometryFactory = new GeometryFactory();
    TWD97GeometryConverterDecorator convertDecorator = new TWD97GeometryConverterDecorator();

    private HashMap<FeatureType, ArrayList<String>> txFeaturesContext = new HashMap<FeatureType, ArrayList<String>>();

    private FeatureTypeBuilder typeBuilderPnt = null;
    private FeatureTypeBuilder typeBuilderRect = null;
    private FeatureType featureType = null;
    private FeatureType featureType2 = null;

    private boolean dropTableMode = true;

    public IndexDgnConvertPostGISJobContext(String dataPath, DataStore targetDataStore)
    {
        super(dataPath, targetDataStore);
    }

    public void putFeatureCollection(Element element) throws IllegalAttributeException, SchemaException
    {
        if (!(element instanceof TextElement))
        {
            return;
        }

        Feature feature = createFeature((TextElement) element);
        if (feature == null)
        {
            logger.info("cannot craete feature." + element.toString() + "'" +
                    ((TextElement) element).getText() + "'");
            return;
        }

        if (!txFeaturesContext.containsKey(feature.getFeatureType()))
        {
            txFeaturesContext.put(feature.getFeatureType(), new ArrayList<String>());
        }
        ArrayList<String> arrayList = txFeaturesContext.get(feature.getFeatureType());
        arrayList.add(makeInsertSql(feature, -1));

        feature = createFeature2((TextElement) element);
        if (feature == null)
        {
            logger.info("cannot craete feature2." + element.toString() + "'" +
                    ((TextElement) element).getText() + "'");
            return;
        }

        if (!txFeaturesContext.containsKey(feature.getFeatureType()))
        {
            txFeaturesContext.put(feature.getFeatureType(), new ArrayList<String>());
        }
        arrayList = txFeaturesContext.get(feature.getFeatureType());
        arrayList.add(makeInsertSql(feature, -1));
    }

    public void startTransaction()
    {
    }

    public void commitTransaction()
    {
        if (!txFeaturesContext.isEmpty())
        {
            logger.debug("Transaction size = " + txFeaturesContext.size());
        } else
        {
            logger.debug("Transaction is empty.");
        }

        if (!txFeaturesContext.isEmpty())
        {
            updateDataStore();
        }

        txFeaturesContext.clear();
    }

    public void rollbackTransaction()
    {
        txFeaturesContext.clear();
    }

    private void updateDataStore()
    {
        Iterator<FeatureType> it = txFeaturesContext.keySet().iterator();
        String currentStmt = null;
        try
        {
            while (it.hasNext())
            {
                FeatureType featureType = it.next();
                logger.debug("Begin Save PostGIS:" + featureType.getTypeName());

                ArrayList<String> stmtTexts = txFeaturesContext.get(featureType);
                Connection conn = getConnection();
                boolean autoCommit = conn.getAutoCommit();
                conn.setAutoCommit(true);
                // conn.setAutoCommit(false);
                // Statement stmt = conn.createStatement();
                // int i = 0;
                for (String stmtText : stmtTexts)
                {
                    currentStmt = stmtText;
                    Statement stmt = conn.createStatement();
                    try
                    {
                        stmt.execute(stmtText);
                    } catch (PSQLException e)
                    {
                        if (currentStmt != null)
                        {
                            logger.error("Execute:" + currentStmt);
                        }
                        logger.error(e.getServerErrorMessage());
                        logger.error(e.getMessage(), e);
                    } finally {
                        stmt.close();
                    }
                    /*
                    if ((i % BATCHSIZE) != 0)
                    {
                        stmt.addBatch(stmtText);
                    } else {
                        stmt.addBatch(stmtText);
                        stmt.executeBatch();
                    }
                    i++;
                    */
                }
                /*
                if ((i % BATCHSIZE) != 0)
                {
                    stmt.executeBatch();
                }
                stmt.close();
                stmtTexts.clear();
                */
                conn.setAutoCommit(autoCommit);
                logger.debug("End Save PostGIS:" + featureType.getTypeName());
            }
        } catch (PSQLException e)
        {
            if (currentStmt != null)
            {
                logger.error("Execute:" + currentStmt);
            }
            logger.error(e.getServerErrorMessage());
            logger.error(e.getMessage(), e);
        } catch (SQLException e)
        {
            logger.error(e.getMessage(), e);
        }
    }

    public void closeFeatureWriter() throws IOException
    {
        /*
        for (FeatureWriter featureWriter : this.featuresWriterContext.values())
        {
            featureWriter.close();
        }

        this.featuresWriterContext.clear();
        */
    }

    public FeatureType createFeatureElement(String featureName) throws SchemaException
    {
        if (typeBuilderRect == null)
        {
            typeBuilderRect = FeatureTypeBuilderUtil.createNormalIndexFeatureTypeBuilder(featureName);
            if (isExistFeature(typeBuilderRect.getFeatureType()))
            {
                try
                {
                    Connection conn = targetDataStore.getConnection(Transaction.AUTO_COMMIT);
                    if (dropTableMode)
                    {
                        dropGeometryColumn(conn, featureName,
                                typeBuilderRect.getFeatureType().getDefaultGeometry().getLocalName());
                        dropTable(conn, featureName);
                        ArrayList<String> schemaTexts = createSchemaTexts(typeBuilderRect.getFeatureType());
                        for (String stmtText : schemaTexts)
                        {
                            Statement stmt = conn.createStatement();
                            stmt.execute(stmtText);
                            stmt.close();
                        }
                    } else
                    {
                        deleteTable(conn, featureName);
                    }
                    conn.close();
                } catch (IOException e)
                {
                    logger.warn(e.getMessage(), e);
                } catch (SQLException e)
                {
                    logger.warn(e.getMessage(), e);
                }
            } else
            {
                try
                {
                    Connection conn = targetDataStore.getConnection(Transaction.AUTO_COMMIT);
                    ArrayList<String> schemaTexts = createSchemaTexts(typeBuilderRect.getFeatureType());
                    for (String stmtText : schemaTexts)
                    {
                        Statement stmt = conn.createStatement();
                        stmt.execute(stmtText);
                        stmt.close();
                    }
                    conn.close();
                } catch (IOException e)
                {
                    logger.warn(e.getMessage(), e);
                } catch (SQLException e)
                {
                    logger.warn(e.getMessage(), e);
                }
            }
        }
        return typeBuilderRect.getFeatureType();
    }

    public FeatureType createFeatureElement2(String featureName) throws SchemaException
    {
        if (typeBuilderPnt == null)
        {
            typeBuilderPnt = FeatureTypeBuilderUtil.createNormalIndexTextFeatureTypeBuilder(featureName);
            if (isExistFeature(typeBuilderPnt.getFeatureType()))
            {
                try
                {
                    Connection conn = targetDataStore.getConnection(Transaction.AUTO_COMMIT);
                    if (dropTableMode)
                    {
                        dropGeometryColumn(conn, featureName,
                                typeBuilderPnt.getFeatureType().getDefaultGeometry().getLocalName());
                        dropTable(conn, featureName);

                        ArrayList<String> schemaTexts = createSchemaTexts(typeBuilderPnt.getFeatureType());
                        for (String stmtText : schemaTexts)
                        {
                            Statement stmt = conn.createStatement();
                            stmt.execute(stmtText);
                            stmt.close();
                        }
                    } else
                    {
                        deleteTable(conn, featureName);
                    }
                    conn.close();
                } catch (IOException e)
                {
                    logger.warn(e.getMessage(), e);
                } catch (SQLException e)
                {
                    logger.warn(e.getMessage(), e);
                }
            } else
            {
                try
                {
                    Connection conn = targetDataStore.getConnection(Transaction.AUTO_COMMIT);
                    ArrayList<String> schemaTexts = createSchemaTexts(typeBuilderPnt.getFeatureType());
                    for (String stmtText : schemaTexts)
                    {
                        Statement stmt = conn.createStatement();
                        stmt.execute(stmtText);
                        stmt.close();
                    }
                    conn.close();
                } catch (IOException e)
                {
                    logger.warn(e.getMessage(), e);
                } catch (SQLException e)
                {
                    logger.warn(e.getMessage(), e);
                }
            }
        }
        return typeBuilderPnt.getFeatureType();
    }

    public Feature createFeature(FeatureType featureType, Element element) throws IllegalAttributeException
    {
        DefaultColorTable colorTable = (DefaultColorTable) DefaultColorTable.getInstance();
        if (element instanceof TextElement)
        {
            TextElement textElement = (TextElement) element;
            String tpclid = textElement.getText();

            Envelope extent = TPCLIDConverter.convertTpclIdToEnvelope(tpclid);
            Geometry geom = geometryFactory.createLinearRing(new Coordinate[]
                    {
                            TWDDatumConverter.fromTM2ToTWD97(new Coordinate(extent.getMinX(), extent.getMinY())),
                            TWDDatumConverter.fromTM2ToTWD97(new Coordinate(extent.getMaxX(), extent.getMinY())),
                            TWDDatumConverter.fromTM2ToTWD97(new Coordinate(extent.getMaxX(), extent.getMaxY())),
                            TWDDatumConverter.fromTM2ToTWD97(new Coordinate(extent.getMinX(), extent.getMaxY())),
                            TWDDatumConverter.fromTM2ToTWD97(new Coordinate(extent.getMinX(), extent.getMinY())),
                    });

            return featureType.create(new Object[]{
                    geom,
                    extent.getMinX(),
                    extent.getMinY(),
                    extent.getMaxX(),
                    extent.getMaxY(),
                    tpclid,
                    colorTable.getColorCode(textElement.getColorIndex()),
                    textElement.getWeight(),
                    textElement.getLineStyle()
            });
        }
        return null;
    }

    public Feature createFeature2(FeatureType featureType, Element element) throws IllegalAttributeException
    {
        DefaultColorTable colorTable = (DefaultColorTable) DefaultColorTable.getInstance();
        if (element instanceof TextElement)
        {
            TextElement txtElement = (TextElement) element;
            double angle = txtElement.getRotationAngle();
            angle = BigDecimal.valueOf(angle).setScale(3, RoundingMode.HALF_UP).doubleValue();
            convertDecorator.setConverter(txtElement);
            Feature feature = featureType.create(new Object[]{
                    convertDecorator.toGeometry(geometryFactory),
                    colorTable.getColorCode(txtElement.getColorIndex()),
                    txtElement.getWeight(),
                    txtElement.getLineStyle(),
                    txtElement.getJustification(),
                    txtElement.getTextHeight(),
                    txtElement.getTextWidth(),
                    angle,
                    txtElement.getText()
            });
            return feature;
        }
        return null;
    }

    private Feature createFeature(TextElement element) throws SchemaException, IllegalAttributeException
    {
        if (featureType == null)
        {
            String dgnname = getFilename().toLowerCase();
            int i = dgnname.lastIndexOf(".");
            if (i != -1)
            {
                dgnname = dgnname.substring(0, i);
            }
            featureType = createFeatureElement(dgnname);
        }
        return createFeature(featureType, element);
    }

    private Feature createFeature2(TextElement element) throws SchemaException, IllegalAttributeException
    {
        if (featureType2 == null)
        {
            String dgnname = getFilename().toLowerCase();
            int i = dgnname.lastIndexOf(".");
            if (i != -1)
            {
                dgnname = dgnname.substring(0, i);
            }
            dgnname = dgnname + "P";
            featureType2 = createFeatureElement2(dgnname);
        }
        return createFeature2(featureType2, element);
    }

    protected FrammeAttributeData getFeatureLinkage(Element element)
    {
        if (!element.hasUserAttributeData())
            return null;

        List<UserAttributeData> usrDatas = element.getUserAttributeData();
        for (UserAttributeData anUsrData : usrDatas)
        {
            if (anUsrData instanceof FrammeAttributeData)
            {
                return (FrammeAttributeData) anUsrData;
            }
        }
        return null;
    }

    public Log getLogger()
    {
        return logger;
    }

    public boolean isDropTableMode()
    {
        return dropTableMode;
    }

    public void setDropTableMode(boolean dropTableMode)
    {
        this.dropTableMode = dropTableMode;
    }

    public void clearOutputDatabase()
    {
    }
}