/*******************************************************************************
 * Copyright (c) 2012 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.maps.osm;

import java.awt.geom.Rectangle2D;
import java.net.MalformedURLException;

/**
 * @author Tuukka Lehtonen
 */
public class OSMGetMapQuery {

    String srs = "EPSG:4326";

    int width;

    int height;

    Rectangle2D bbox;

    String[] styles;

    String[] layers;

    String format;

    public OSMGetMapQuery(int width, int height, Rectangle2D bbox,
            String format, String... layers) throws MalformedURLException {
        this.width = width;
        this.height = height;
        this.bbox = bbox;
        this.format = format;
        this.layers = layers;
    }

    public void setSpatialReferenceSystem(String srs) {
        this.srs = srs;
    }

    public void setStyles(String... styles) {
        this.styles = styles;
    }

    public void setLayers(String... layers) {
        this.layers = layers;
    }

    public static String getTileNumber(final double lat, final double lon,
            final int zoom) {
        int xtile = (int) Math.floor((lon + 180) / 360 * (1 << zoom));
        int ytile = (int) Math.floor((1 - Math.log(
                Math.tan(Math.toRadians(lat))
                + 1 / Math.cos(Math.toRadians(lat)))
                / Math.PI)
                / 2 * (1 << zoom));
        return ("" + zoom + "/" + xtile + "/" + ytile+".png");
    }

    public String toString() {
        return getTileNumber(bbox.getMinX(), bbox.getMinY(), 16);
    }

}