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/*
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*/
package com.venky.geo;
import com.venky.core.string.StringUtil;
import com.venky.core.util.ObjectUtil;
import com.venky.xml.XMLDocument;
import com.venky.xml.XMLElement;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.JSONValue;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.logging.Logger;
import org.w3c.dom.DOMException;
/**
*
* @author venky
*/
public class GeoCoder {
private static final Map availableSps = new HashMap();
static {
//registerGeoSP("yahoo",new Yahoo());
registerGeoSP("google", new Google());
registerGeoSP("openstreetmap", new Nominatim());
registerGeoSP("here", new Here());
}
private static void registerGeoSP(String sp, GeoSP geoSP) {
availableSps.put(sp, geoSP);
}
private GeoSP preferredServiceProvider = null;
public GeoCoder(String preferedSP) {
preferredServiceProvider = availableSps.get(preferedSP);
}
public GeoCoder() {
this(null);
}
public void fillGeoInfo(String address, GeoLocation location, Map params) {
GeoLocation result = getLocation(address, params);
if (result != null) {
location.setLat(result.getLat());
location.setLng(result.getLng());
}
}
Collection sps = null;
public boolean isEnabled(Map params){
if (preferredServiceProvider != null){
return preferredServiceProvider.isEnabled(params);
}else {
for (String spName: availableSps.keySet()){
GeoSP sp = availableSps.get(spName);
if (sp != null && sp.isEnabled(params)){
return true;
}
}
return false;
}
}
public GeoLocation getLocation(String address, Map params) {
if (preferredServiceProvider == null) {
sps = Arrays.asList(availableSps.get("here"), availableSps.get("openstreetmap"), availableSps.get("google"));
} else {
sps = Arrays.asList(preferredServiceProvider);
}
for (GeoSP sp : sps) {
GeoLocation loc = sp.getLocation(address, params);
if (loc != null) {
Logger.getLogger(GeoCoder.class.getName()).info("Lat,Lon found using " + sp.getClass().getSimpleName());
return loc;
}
}
return null;
}
public Double getDrivingDistanceKms(GeoLocation l1, GeoLocation l2, Map params){
return getDrivingDistanceKms(l1.getLat(),l1.getLng(),l2.getLat(),l2.getLng(),params);
}
public Double getDrivingDistanceKms(BigDecimal lat1, BigDecimal lng1, BigDecimal lat2, BigDecimal lng2, Map params){
if (preferredServiceProvider == null){
sps = Arrays.asList(availableSps.get("here"), availableSps.get("openstreetmap"), availableSps.get("google"));
}else {
sps = Arrays.asList(preferredServiceProvider);
}
for (GeoSP sp :sps){
Double distance = sp.getDrivingDistance(lat1,lng1,lat2,lng2,params);
if (distance != null){
Logger.getLogger(GeoCoder.class.getName()).info("Distance found using " + sp.getClass().getSimpleName());
return distance;
}
}
return null;
}
public Double distanceKms(GeoLocation l1, GeoLocation l2){
return new GeoCoordinate(l1).distanceTo(new GeoCoordinate(l2));
}
private static interface GeoSP {
public GeoLocation getLocation(String address, Map params);
public GeoAddress getAddress(GeoLocation geoLocation, Map params);
public boolean isEnabled(Map params);
default Double getDrivingDistance(BigDecimal lat1, BigDecimal lng1, BigDecimal lat2, BigDecimal lng2, Map params){
return distance(lat1,lng1,lat2,lng2);
}
public static Double distance(BigDecimal lat1, BigDecimal lng1, BigDecimal lat2, BigDecimal lng2){
return new GeoCoordinate(lat1, lng1).distanceTo(new GeoCoordinate(lat2, lng2));
}
}
public static class GeoAddress {
String city;
String state;
String country;
public String getCity() {
return city;
}
public String getState() {
return state;
}
public String getCountry() {
return country;
}
}
private static class Google implements GeoSP {
private static final String WSURL = "https://maps.googleapis.com/maps/api/geocode/xml?sensor=false&key=%s&address=%s";
private static final String REVERSE_GEOCODE_URL =
"https://maps.googleapis.com/maps/api/geocode/xml?latlng=%f,%f&key=%s";
@Override
public boolean isEnabled(Map params) {
return !ObjectUtil.isVoid(params.get("google.api_key"));
}
public GeoLocation getLocation(String address, Map params) {
try {
String apiKey = params.get("google.api_key");
if (!ObjectUtil.isVoid(apiKey)) {
String url = String.format(WSURL, apiKey, URLEncoder.encode(address, "UTF-8"));
URL u = new URL(url);
URLConnection connection = u.openConnection();
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
XMLDocument doc = XMLDocument.getDocumentFor(connection.getInputStream());
XMLElement status = doc.getDocumentRoot().getChildElement("status");
if ("OK".equals(status.getNodeValue())) {
Logger.getLogger(getClass().getName()).info("URL:" + url);
XMLElement location = doc.getDocumentRoot().getChildElement("result").getChildElement("geometry").getChildElement("location");
float lat = -1;
float lng = -1;
for (Iterator nodeIterator = location.getChildElements(); nodeIterator.hasNext();) {
XMLElement node = nodeIterator.next();
if (node.getNodeName().equals("lat")) {
lat = Float.valueOf(node.getChildren().next().getNodeValue());
} else if (node.getNodeName().equals("lng")) {
lng = Float.valueOf(node.getChildren().next().getNodeValue());
}
}
return new GeoCoordinate(new BigDecimal(lat), new BigDecimal(lng));
}
}
} catch (IOException e) {
Logger.getLogger(getClass().getName()).warning(e.getMessage());
}
return null;
}
@Override
public GeoAddress getAddress(GeoLocation geoLocation, Map params) {
try {
String apiKey = params.get("google.api_key");
if (!ObjectUtil.isVoid(apiKey)) {
String url = String.format(REVERSE_GEOCODE_URL, geoLocation.getLat().floatValue(), geoLocation.getLng().floatValue(),apiKey);
URL u = new URL(url);
URLConnection connection = u.openConnection();
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
XMLDocument doc = XMLDocument.getDocumentFor(connection.getInputStream());
XMLElement status = doc.getDocumentRoot().getChildElement("status");
if ("OK".equals(status.getNodeValue())) {
Logger.getLogger(getClass().getName()).info("URL:" + url);
Iterator li = doc.getDocumentRoot().getChildElement("result").getChildElements("address_component");
GeoAddress address = new GeoAddress();
while (li.hasNext()){
XMLElement addressComponent = li.next();
String longName = addressComponent.getChildElement("long_name").getNodeValue();
Iterator typeIterator = addressComponent.getChildElements("type");
Set types = new HashSet();
while (typeIterator.hasNext()){
XMLElement typeElement = typeIterator.next();
String type = typeElement.getNodeValue();
types.add(type);
}
if (types.contains("country")){
address.country = longName;
}else if (types.contains("administrative_area_level_1")){
address.state = longName;
}else if (types.contains("locality")){
address.city = longName;
}
}
return address;
}
}
} catch (IOException e) {
Logger.getLogger(getClass().getName()).warning(e.getMessage());
}
return null;
}
}
private static class Nominatim implements GeoSP {
private static final String WSURL = "https://nominatim.openstreetmap.org/search?format=xml&polygon=0&q=%s";
private static final String REVERSE_GEO_CODE_URL
= "https://nominatim.openstreetmap.org/reverse?format=xml&lat=%f&lon=%f&zoom=10&addressdetails=1";
public GeoLocation getLocation(String address, Map params) {
try {
String url = String.format(WSURL, URLEncoder.encode(address, "UTF-8"));
URL u = new URL(url);
HttpURLConnection conn = (HttpURLConnection) u.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000);
conn.addRequestProperty("Accept-Language", "en-US,en;q=0.8");
conn.addRequestProperty("User-Agent", "Mozilla");
boolean redirect = false;
// normally, 3xx is redirect
int status = conn.getResponseCode();
if (status != HttpURLConnection.HTTP_OK) {
if (status == HttpURLConnection.HTTP_MOVED_TEMP
|| status == HttpURLConnection.HTTP_MOVED_PERM
|| status == HttpURLConnection.HTTP_SEE_OTHER) {
redirect = true;
}
}
if (redirect) {
String newUrl = conn.getHeaderField("Location");
// get the cookie if need, for login
String cookies = conn.getHeaderField("Set-Cookie");
// open the new connnection again
conn = (HttpURLConnection) new URL(newUrl).openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000);
conn.setRequestProperty("Cookie", cookies);
conn.addRequestProperty("Accept-Language", "en-US,en;q=0.8");
conn.addRequestProperty("User-Agent", "Mozilla");
}
XMLDocument doc = XMLDocument.getDocumentFor(conn.getInputStream());
XMLElement place = doc.getDocumentRoot().getChildElement("place");
if (place != null) {
Logger.getLogger(getClass().getName()).info("URL:" + url);
return new GeoCoordinate(new BigDecimal(place.getAttribute("lat")), new BigDecimal(place.getAttribute("lon")));
}
} catch (Exception e) {
Logger.getLogger(getClass().getName()).warning(e.getMessage());
} finally {
try {
Thread.sleep(1000); //To ensure nominatim response code 429 doesnot happen.
} catch (InterruptedException ex) {
//
}
}
return null;
}
@Override
public GeoAddress getAddress(GeoLocation location, Map params) {
GeoAddress address = null;
String url = String.format(REVERSE_GEO_CODE_URL, location.getLat().floatValue(), location.getLng().floatValue());
try {
URL u = new URL(url);
HttpURLConnection conn = (HttpURLConnection) u.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000);
conn.addRequestProperty("Accept-Language", "en-US,en;q=0.8");
conn.addRequestProperty("User-Agent", "Mozilla");
XMLDocument doc = XMLDocument.getDocumentFor(conn.getInputStream());
XMLElement addressparts = doc.getDocumentRoot().getChildElement("addressparts");
if (addressparts != null) {
address = new GeoAddress();
address.city = addressparts.getChildElement("city").getNodeValue();
address.state = addressparts.getChildElement("state").getNodeValue();
address.country = addressparts.getChildElement("country").getNodeValue();
}
return address;
} catch (IOException | DOMException ex) {
return null;
}
}
@Override
public boolean isEnabled(Map params) {
return true;
}
}
private static class Here implements GeoSP {
@Override
public boolean isEnabled(Map params) {
return getGeoCodingUrl("",params) != null;
}
private String getGeoCodingUrl(String address, Map params){
try {
String appKey = params.get("here.app_key");
String appId = params.get("here.app_id");
String appCode = params.get("here.app_code");
if (!ObjectUtil.isVoid(appKey)){
return String.format("https://geocoder.ls.hereapi.com/6.2/geocode.json?apiKey=%s&searchtext=%s",
URLEncoder.encode(appKey,"UTF-8"),
URLEncoder.encode(address,"UTF-8"));
}else if (!ObjectUtil.isVoid(appCode)) {
return String.format("https://geocoder.api.here.com/6.2/geocode.json?app_id=%s&app_code=%s&searchtext=%s",
URLEncoder.encode(appId,"UTF-8"),
URLEncoder.encode(appCode,"UTF-8"),
URLEncoder.encode(address,"UTF-8"));
}else {
return null;
}
}catch (Exception ex){
throw new RuntimeException(ex);
}
}
public GeoLocation getLocation(String address, Map params) {
try {
String url = getGeoCodingUrl(address, params);
if (!ObjectUtil.isVoid(url)) {
URL u = new URL(url);
URLConnection connection = u.openConnection();
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
JSONObject doc = (JSONObject) JSONValue.parse(new InputStreamReader(connection.getInputStream()));
JSONObject place = (JSONObject) doc.get("Response");
JSONArray views = (JSONArray) place.get("View");
JSONObject position = null;
if (views != null && !views.isEmpty()) {
JSONObject view = (JSONObject) views.get(0);
JSONObject location = (JSONObject) ((JSONObject) ((JSONArray) view.get("Result")).get(0)).get("Location");
position = (JSONObject) location.get("DisplayPosition");
}
if (position != null) {
Logger.getLogger(getClass().getName()).info("URL:" + url);
return new GeoCoordinate(new BigDecimal((Double) position.get("Latitude")), new BigDecimal((Double) position.get("Longitude")));
}
}
} catch (Exception e) {
Logger.getLogger(getClass().getName()).warning(e.getMessage());
}
return null;
}
private String getReverseGeoCodeUrl(GeoLocation geoLocation, Map params) throws UnsupportedEncodingException{
String appKey = params.get("here.app_key");
String appId = params.get("here.app_id");
String appCode = params.get("here.app_code");
if (!ObjectUtil.isVoid(appKey)){
return String.format("https://reverse.geocoder.ls.hereapi.com/6.2/reversegeocode.json?prox=%f,%f"
+ "&mode=retrieveLandmarks&maxresults=1&gen=9&apiKey=%s",
geoLocation.getLat().floatValue(), geoLocation.getLng().floatValue(),URLEncoder.encode(appKey,"UTF-8"));
}else if (!ObjectUtil.isVoid(appCode)) {
return String.format("https://reverse.geocoder.api.here.com/6.2/reversegeocode.json?prox=%f,%f"
+ "&mode=retrieveLandmarks&maxresults=1&gen=9&app_id=%s&app_code=%s",
geoLocation.getLat().floatValue(), geoLocation.getLng().floatValue(),
URLEncoder.encode(appId,"UTF-8"),
URLEncoder.encode(appCode,"UTF-8"));
}else {
return null;
}
}
@Override
public GeoAddress getAddress(GeoLocation geoLocation, Map params) {
GeoAddress address = null;
try {
String url = getReverseGeoCodeUrl(geoLocation, params);
if (!ObjectUtil.isVoid(url)) {
URL u = new URL(url);
HttpURLConnection conn = (HttpURLConnection) u.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000);
conn.addRequestProperty("Accept-Language", "en-US,en;q=0.8");
conn.addRequestProperty("User-Agent", "Mozilla");
JSONObject doc = (JSONObject) JSONValue.parse(new InputStreamReader(conn.getInputStream()));
JSONObject place = (JSONObject) doc.get("Response");
JSONArray views = (JSONArray) place.get("View");
JSONObject addressparts = null;
if (views != null && !views.isEmpty()) {
JSONObject view = (JSONObject) views.get(0);
JSONObject location = (JSONObject) ((JSONObject) ((JSONArray) view.get("Result")).get(0)).get("Location");
addressparts = (JSONObject) location.get("Address");
}
if (addressparts != null) {
address = new GeoAddress();
address.city = StringUtil.valueOf(addressparts.get("City"));
address.state = StringUtil.valueOf(addressparts.get("State"));
address.country = StringUtil.valueOf(addressparts.get("Country"));
}
return address;
}
} catch (IOException | DOMException ex) {
}
return null;
}
@Override
public Double getDrivingDistance(BigDecimal lat1, BigDecimal lng1, BigDecimal lat2, BigDecimal lng2, Map params) {
String appKey = params.get("here.app_key");
/*
curl 'https://router.hereapi.com/v8/routes?transportMode=car&origin=12.902987,77.599674&destination=13.198533,77.707956&return=summary&apiKey=4Su9WUwZJ7_dvMn1uDJDs0IoSgDltWlI6Efm4CPnfBM'
{"routes":[{"id":"8ac052c1-b446-403e-b867-65744a5dc8e5","sections":[{"id":"6692dcb0-2b75-4ad7-b9d0-983cf0e1176d","type":"vehicle","departure":{"place":{"type":"place","location":{"lat":12.9029757,"lng":77.6000587},"originalLocation":{"lat":12.902987,"lng":77.599674}}},"arrival":{"place":{"type":"place","location":{"lat":13.19847,"lng":77.7079559},"originalLocation":{"lat":13.198533,"lng":77.7079559}}},"summary":{"duration":5353,"length":43380,"baseDuration":4055},"transport":{"mode":"car"}}]}]}
*/
if (!ObjectUtil.isVoid(appKey)) {
try {
String url = String.format("https://router.hereapi.com/v8/routes?transportMode=%s&apiKey=%s&origin=%f,%f&destination=%f,%f&return=summary",
URLEncoder.encode(params.getOrDefault("transportMode", "car")),
URLEncoder.encode(appKey, "UTF-8"),
lat1.floatValue(), lng1.floatValue(),
lat2.floatValue(), lng2.floatValue());
URL u = new URL(url);
HttpURLConnection conn = (HttpURLConnection) u.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000);
conn.addRequestProperty("Accept-Language", "en-US,en;q=0.8");
conn.addRequestProperty("User-Agent", "Mozilla");
JSONObject out = (JSONObject) JSONValue.parse(new InputStreamReader(conn.getInputStream()));
JSONArray routes = (JSONArray)out.get("routes");
JSONObject route = (JSONObject)routes.get(0);
JSONArray sections = (JSONArray)route.get("sections");
JSONObject section = (JSONObject)sections.get(0);
JSONObject summary = (JSONObject)section.get("summary");
Object length = summary.get("length");
if (length instanceof Number){
return ((Number)length).doubleValue()/1000.0;
}
} catch (Exception ex) {
//
}
}
return GeoSP.distance(lat1, lng1, lat2, lng2);
}
}
}
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