1 package org.average.whereami;
3 import org.average.whereami.APIBase;
4 import org.average.whereami.Oracle;
5 import org.average.whereami.Utterance;
6 import org.average.whereami.PersistentStore;
7 import org.average.whereami.SayWhen;
10 import java.io.IOException;
11 import java.net.UnknownHostException;
12 import org.apache.http.conn.HttpHostConnectException;
14 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
15 import com.google.api.client.http.HttpResponseException;
16 import com.google.api.services.latitude.Latitude;
17 import com.google.api.services.latitude.LatitudeRequest;
18 import com.google.api.services.latitude.model.Location;
20 import android.content.Context;
21 import android.content.res.Resources;
22 import android.text.format.Time;
23 import android.util.Log;
25 public final class LastLocation extends Oracle {
27 final String TAG = getClass().getName();
29 private String[] loc_names;
30 private String[] loc_lats;
31 private String[] loc_lons;
32 private String[] loc_dists;
33 private String myname;
34 private String registered;
35 private SayWhen sayWhen;
36 private Latitude latitude;
38 public LastLocation(APIBase base) {
40 loc_names = base.res.getStringArray(R.array.loc_names);
41 loc_lats = base.res.getStringArray(R.array.loc_lats);
42 loc_lons = base.res.getStringArray(R.array.loc_lons);
43 loc_dists = base.res.getStringArray(R.array.loc_dists);
44 myname = base.res.getString(R.string.myname);
45 registered = base.res.getString(R.string.registered);
46 sayWhen = new SayWhen(base.res);
47 latitude = Latitude.builder(base.httpTransport,
49 .setHttpRequestInitializer(
50 base.accessProtectedResource)
51 .setApplicationName("WhereAmI/1.0").build();
55 public final Utterance getResult() {
57 Log.v(TAG, "entering getResult");
58 Latitude.CurrentLocation.Get request =
59 latitude.currentLocation().get();
60 request.setGranularity("best");
61 Location cloc = request.execute();
62 Double lat = Double.parseDouble(
63 cloc.getLatitude().toString());
64 Double lon = Double.parseDouble(
65 cloc.getLongitude().toString());
66 Long tsm = Long.parseLong(
67 cloc.getTimestampMs().toString());
68 return new Utterance(true,
69 locationMessage(lat, lon, tsm));
70 } catch (GoogleJsonResponseException e) {
71 Log.e(TAG, "GoogleJsonResponseException: " + e);
72 if (e.getResponse().getStatusCode() == 401) {
73 return new Utterance(false,
74 base.authErrorMessage + "\n" +
77 return new Utterance(false, e.getMessage());
79 } catch (HttpResponseException e) {
80 Log.e(TAG, "HttpResponseException: " + e);
81 return new Utterance(false, e.getMessage());
82 } catch (UnknownHostException e) {
83 Log.e(TAG, "UnknownHostException: " + e);
84 return new Utterance(false,
85 base.connectErrorMessage + "\n" +
87 } catch (HttpHostConnectException e) {
88 Log.e(TAG, "HttpHostConnectException: " + e);
89 return new Utterance(false,
90 base.connectErrorMessage + "\n" +
92 } catch (IOException e) {
93 Log.e(TAG, "IOException: " + e);
94 return new Utterance(false, e.getMessage());
98 private String locationMessage(Double lat, Double lon, Long tsm) {
99 Log.v(TAG, "entering locationMessage(" + lat +
100 "," + lon + "," + tsm + ")");
101 String locmsg = "<UNSET>";
102 String agomsg = "<UNSET>";
103 for (int i = 0; i < loc_names.length; i++) {
104 Double dist = haversine(lat, lon,
105 Double.parseDouble(loc_lats[i]),
106 Double.parseDouble(loc_lons[i]));
107 Log.v(TAG, "Dist from " + loc_names[i] +
109 ", threshold " + loc_dists[i]);
110 if ((loc_dists[i].equals("0")) ||
111 (dist < Double.parseDouble(loc_dists[i]))) {
112 locmsg = loc_names[i];
116 return myname + " " + locmsg + ", " + registered +
117 " " + sayWhen.say(tsm);
120 private Double toRad(Double deg) {
121 return deg * 3.14159265 / 180;
124 private Double haversine(Double lat1, Double lon1,
125 Double lat2, Double lon2) {
126 Double dlat = toRad(lat2 - lat1);
127 Double dlon = toRad(lon2 - lon1);
128 Double a = Math.sin(dlat / 2) * Math.sin(dlat / 2) +
129 Math.sin(dlon / 2) * Math.sin(dlon / 2) *
130 Math.cos(toRad(lat1)) * Math.cos(toRad(lat2));
131 Double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));