/*
 * Copyright (c) 2006, msb0b.com
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the msb0b.com nor the names of its contributors
 *       may be used to endorse or promote products derived from this software 
 *       without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.msb0b.jspwiki.plugin;

import org.apache.log4j.Logger;
import com.ecyrd.jspwiki.*;
import com.ecyrd.jspwiki.plugin.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.StringReader;
import java.io.IOException;
import java.util.Map;
import java.util.Properties;

public class GoogleMapsPlugin implements WikiPlugin {

	public static final String KEY_PROPERTY = "jspwiki.Google.maps.key";

	public static final String PARAM_KEY = "key";

	public static final String PARAM_LNG = "lng";

	public static final String PARAM_LAT = "lat";

	public static final String PARAM_ZOOM = "zoom";

	/*
	 * Parameters needed for Google Maps The very first beta version supports
	 * only 1 point and no features key: the google maps api key. Go to
	 * http://www.google.com/apis/maps/ to sign up for one the key should really
	 * be stored in a properties file lat: latitude lng: longitude @param
	 * context @param params
	 */
	public String execute(WikiContext context, Map params) {
		WikiEngine engine = context.getEngine();
		WikiPage page = context.getPage();
		StringBuffer sb = new StringBuffer();
		Properties props = engine.getWikiProperties();
		String key = props.getProperty(KEY_PROPERTY);

		String param_key = (String) params.get(PARAM_KEY);
		String lng = (String) params.get(PARAM_LNG);
		float lngv = 0;

		if (lng != null) {
			try {
				lngv = Float.parseFloat(lng);
				if(lngv < -180)
					lngv = -180;
				if(lngv > 180)
					lngv = 180;
			} catch(Exception e)
			{
			}
		}

		String lat = (String) params.get(PARAM_LAT);
		float latv = 0;

		if (lat != null) {
			try {
				latv = Float.parseFloat(lat);
				if(latv < -90)
					latv = -90;
				if(latv > 90)
					latv = 90;
			} catch(Exception e)
			{
			}
		}

		String zoom = (String) params.get(PARAM_ZOOM);
		int zoomv = 15;

		if (zoom != null) {
			try {
				zoomv = Integer.parseInt(zoom);
				if(zoomv < 0)
					zoomv = 0;
				if(zoomv > 19)
					zoomv = 19;
			} catch(Exception e) {
			}
		}

		if (param_key != null)
			key = param_key;

		if (key == null)
			key = "";

		sb
				.append("<!-- Generated by GoogleMapsPlugin, Copyright (c) 2006, msb0b.com. Released under BSD license. -->\n");
		sb.append("<div id=\"map\"></div>\n");
		sb
				.append("<script type=\"text/javascript\" src=\"http://maps.google.com/maps?file=api&amp;v=2&amp;key="
						+ key + "\"></script>\n");
		sb.append("<script type=\"text/javascript\">\n");
		sb.append("//<![CDATA[\n");
		sb.append("if (GBrowserIsCompatible()) {\n");
		sb.append("  var map = new GMap2(document.getElementById(\"map\"));\n");
		sb.append("  var point = new GLatLng(" + latv + ", " + lngv + ");\n");
		sb.append("  var marker = new GMarker(point);\n");
		sb.append("  map.setCenter(point, 13);\n");
		sb.append("  map.addControl(new GLargeMapControl());\n");
		sb.append("  map.addControl(new GMapTypeControl());\n");
		sb.append("  map.addControl(new GScaleControl());\n");
		sb.append("  map.addControl(new GOverviewMapControl());\n");
		sb.append("  map.addOverlay(marker);\n");
		sb.append("  map.setMapType(G_HYBRID_MAP);");
		sb.append("  map.setZoom(" + zoomv + ");");
		sb.append("}\n");
		sb.append("//]]>\n");
		sb.append("</script>\n");

		return sb.toString();
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
	}

}