package org.gcube.portlets.user.geoportaldataviewer.client.util;

import java.util.List;
import java.util.Vector;

import org.gcube.portlets.user.geoportaldataviewer.client.util.MapServerRecognize.SERVERTYPE;
import org.gcube.portlets.user.geoportaldataviewer.shared.gis.ClickDataInfo;
import org.gcube.portlets.user.geoportaldataviewer.shared.gis.LayerItem;

import com.google.gwt.core.shared.GWT;

/**
 * The Class URLMakers.
 *
 * @author Ceras. Updated by Francesco Mangiacrapa
 *         francesco.mangiacrapa@isti.cnr.it Jan 28, 2016
 */
public class URLMakers {

	public static final String CQL_FILTER_PARAMETER = "CQL_FILTER";

	// MAP SERVER PIVOT
	public static final String WXS = "wxs";
	// GEOSERVER PIVOT
	public static final String WMS = "/wms";

	// OUTPUT FORMAT
	public static final String CSV = "csv";

	public static final String JSON = "json";
	
	private static String[][] a = { { "\\?", "%3F" }, { "&", "%26" }, };

//	/**
//	 * Encoding layer.
//	 *
//	 * @param l the l
//	 * @return the string
//	 */
//	private static String encodingLayer(String l) {
//		String result = l.replace(":", "%3A");
//
//		return result;
//	}
//
//	/**
//	 * Gets the url.
//	 *
//	 * @param projection the projection
//	 * @param width      the width
//	 * @param height     the height
//	 * @param x          the x
//	 * @param y          the y
//	 * @param bbox       the bbox
//	 * @param layers     the layers
//	 * @return the url
//	 */
//	public static String getURL(String projection, String width, String height, int x, int y, String bbox,
//			Vector<String> layers) {
//
//		String layer = "";
//		boolean first = true;
//		for (String s : layers) {
//			if (!first) {
//				layer = layer + "%2C" + encodingLayer(s);
//			}
//			if (first) {
//				layer = encodingLayer(s);
//			}
//			first = false;
//		}
//
//		String[] _bbox = bbox.split(",");
//
//		projection = encodingLayer(projection);
//		String result = "?REQUEST=GetFeatureInfo&EXCEPTIONS=application%2Fvnd.ogc.se_xml&BBOX=" + _bbox[0] + "%2C"
//				+ _bbox[1] + "%2C" + _bbox[2] + "%2C" + _bbox[3] + "&X=" + x + "&Y=" + y
//				+ "&INFO_FORMAT=text%2Fhtml&QUERY_LAYERS=" + layer + "&FEATURE_COUNT=50&Layers=" + layer
//				+ "&Styles=&Srs=" + projection + "&WIDTH=" + width + "&HEIGHT=" + height + "&format=image%2Fpng";
//
//		return result;
//	}
//
//	/**
//	 * Gets the url.
//	 *
//	 * @param projection the projection
//	 * @param width      the width
//	 * @param height     the height
//	 * @param x          the x
//	 * @param y          the y
//	 * @param bbox       the bbox
//	 * @param layerItems the layer items
//	 * @return the url
//	 */
//	public static String getURL(String projection, int width, int height, int x, int y, String bbox,
//			List<LayerItem> layerItems) {
//		String strListLayers = "";
//		boolean first = true;
//		for (LayerItem layerItem : layerItems) {
//			if (layerItem.isClickData()) {
//				String strLayer = encodingLayer(layerItem.getName());
//				strListLayers = first ? strLayer : strListLayers + "%2C" + strLayer;
//				first = false;
//			}
//		}
//
//		String[] _bbox = bbox.split(",");
//
//		projection = encodingLayer(projection);
//		String result = "?REQUEST=GetFeatureInfo&EXCEPTIONS=application%2Fvnd.ogc.se_xml&BBOX=" + _bbox[0] + "%2C"
//				+ _bbox[1] + "%2C" + _bbox[2] + "%2C" + _bbox[3] + "&X=" + x + "&Y=" + y
//				+ "&INFO_FORMAT=text%2Fhtml&QUERY_LAYERS=" + strListLayers + "&FEATURE_COUNT=50&Layers=" + strListLayers
//				+ "&Styles=&Srs=" + projection + "&WIDTH=" + width + "&HEIGHT=" + height + "&format=image%2Fpng";
//
//		return result;
//	}
//
////	public static String getURLFeatureInfo(ClickDataInfo clickDataInfo, String projection, String bbox) {
////		return getURL(projection, clickDataInfo.getW(), clickDataInfo.getH(), clickDataInfo.getX(), clickDataInfo.getY(), bbox, clickDataInfo.getLayers());
////	}

//	/**
//	 * Gets the url.
//	 *
//	 * @param clickDataInfo the click data info
//	 * @param projection    the projection
//	 * @param layerItems    the layer items
//	 * @return the url
//	 */
//	public static String getURL(ClickDataInfo clickDataInfo, String projection, List<LayerItem> layerItems) {
//		return getURL(projection, clickDataInfo.getW(), clickDataInfo.getH(), clickDataInfo.getX(),
//				clickDataInfo.getY(), clickDataInfo.getBbox(), layerItems);
//	}

	/**
	 * Gets the wfs feature url.
	 *
	 * @param l      the l
	 * @param bbox   the bbox
	 * @param limit  the limit
	 * @param format the format
	 * @return the wfs feature url
	 */
	public static String getWfsFeatureUrl(LayerItem l, String srsName, String bbox, int limit, String format) {

		String link = l.getUrl();
		GWT.log("Layer URL: " + link);
		GWT.log("CQL filter is: " + l.getCqlFilter());

		String outputformat = null;
		String boundingBox = bbox;

		// CASE MAP SERVER
		SERVERTYPE mapserverType = MapServerRecognize.recongnize(l);
		GWT.log("Recongnized SERVERTYPE: " + mapserverType);

		if (mapserverType != null) {
			if (mapserverType.equals(SERVERTYPE.MAPSERVER)) {
				GWT.log("wms url contains wxs is a map server? no appending /wfs ");
				outputformat = MapServerRecognize.outputFormatRecognize(SERVERTYPE.MAPSERVER, format);
				srsName = "EPSG:4326";
				boundingBox = reverseCoordinate(bbox, ","); // USE AXIS XY
				// TODO DEBUG
				GWT.log("SERVERTYPE.MAPSERVER outputformat: " + outputformat);
				GWT.log("SERVERTYPE.MAPSERVER srsName: " + srsName);
				GWT.log("SERVERTYPE.MAPSERVER boundingBox: " + boundingBox);
			} else {
				GWT.log("is geoserver appending suffix /wfs if is not present");
				link += link.endsWith("wfs") ? "" : "/wfs";
				outputformat = MapServerRecognize.outputFormatRecognize(SERVERTYPE.GEOSEVER, format);
				srsName = "urn:x-ogc:def:crs:"+srsName; // USE AXIS YX
				// TODO DEBUG
				GWT.log("SERVERTYPE.GEOSEVER outputformat: " + outputformat);
				GWT.log("SERVERTYPE.GEOSEVER srsName: " + srsName);
			}
		}

		link += "?service=wfs&version=1.1.0" + "&REQUEST=GetFeature" + "&srsName=" + srsName + "&TYPENAME="
				+ l.getName() + (limit == 0 ? "" : "&MAXFEATURES=" + limit)
				+ (outputformat == null ? "" : "&OUTPUTFORMAT=" + outputformat);

		if (l.getCqlFilter() != null && !l.getCqlFilter().isEmpty()) {
			if (l.getCqlFilter().contains("BBOX(the_geom")) {
				// THE BBOX IS ALREADY USED INTO CQL FILTERING, SO USING IT DIRECTLY
				link += "&" + CQL_FILTER_PARAMETER + "=" + l.getCqlFilter();
			} else {
				// I NEED TO ENCODE THE BBOX INTO CQL FILTERING,
				String cqlFilterValue = "BBOX(the_geom," + boundingBox + ")" + " AND " + l.getCqlFilter();

				link += "&" + CQL_FILTER_PARAMETER + "=" + cqlFilterValue;
			}

		} else {
			// NO CQL FILTERING APPLIED
			link += (boundingBox == null ? "" : "&BBOX=" + boundingBox);
		}

		GWT.log("WFS: " + link);
		return link;
	}

	/**
	 * Reverse coordinate.
	 *
	 * @param BBOX  the bbox
	 * @param split eg. ,
	 * @return a BBOX with reverse x and y coordinate
	 */
	public static String reverseCoordinate(String BBOX, String split) {

		if (BBOX == null || BBOX.isEmpty()) {
			return BBOX;
		}

		String[] splitted = BBOX.split(split);

		for (String string : splitted) {
			System.out.println(string);
		}

		if (splitted.length == 4) {
			return splitted[1] + split + splitted[0] + split + splitted[3] + split + splitted[2];
		} else {
			return null;
		}
	}

	/**
	 * Encode url.
	 *
	 * @param url the url
	 * @return the string
	 */
	public static String encodeUrl(String url) {
		String urlNew = url;
		for (String[] s : a) {
			urlNew = urlNew.replaceAll(s[0], s[1]);
		}
		return urlNew;
	}

	/**
	 * Decode url.
	 *
	 * @param url the url
	 * @return the string
	 */
	public static String decodeUrl(String url) {
		String urlNew = url;
		for (String[] s : a) {
			urlNew = urlNew.replaceAll(s[1], s[0]);
		}
		return urlNew;
	}

	/**
	 * Removes the last char.
	 *
	 * @param string the string
	 * @return the string
	 */
	public static String removeLastChar(String string) {

		if (string == null)
			return null;

		if (string.length() > 0)
			return string.substring(0, string.length() - 1);

		return string;
	}
}