/*
 * Copyright 2015, The Querydsl Team (http://www.querydsl.com/team)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.querydsl.sql.spatial;

import java.io.IOException;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import javax.annotation.Nullable;

import org.geolatte.geom.Geometry;
import org.geolatte.geom.codec.Wkt;

import com.querydsl.sql.types.AbstractType;

class SQLServerGeometryType extends AbstractType<Geometry> {

    public static final SQLServerGeometryType DEFAULT = new SQLServerGeometryType();

    private static final int DEFAULT_SRID = 4326;

    public SQLServerGeometryType() {
        super(Types.BLOB);
    }

    @Override
    public Class<Geometry> getReturnedClass() {
        return Geometry.class;
    }

    @Override
    @Nullable
    public Geometry getValue(ResultSet rs, int startIndex) throws SQLException {
        try {
            byte[] bytes = rs.getBytes(startIndex);
            if (bytes != null) {
                return new SQLServerGeometryReader().read(bytes);
            } else {
                return null;
            }
        } catch (IOException e) {
            throw new SQLException(e);
        }
    }

    @Override
    public void setValue(PreparedStatement st, int startIndex, Geometry value) throws SQLException {
        try {
            byte[] bytes = new SQLServerGeometryWriter().write(value);
            st.setBytes(startIndex, bytes);
        } catch (IOException e) {
            throw new SQLException(e);
        }
    }

    @Override
    public String getLiteral(Geometry geometry) {
        String str = Wkt.newEncoder(Wkt.Dialect.POSTGIS_EWKT_1).encode(geometry);
        if (geometry.getSRID() > -1) {
            return "geometry::STGeomFromText('" + str + "', " + geometry.getSRID() + ")";
        } else {
            return "geometry::STGeomFromText('" + str + "', " + DEFAULT_SRID + ")";
        }
    }

}