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;
12 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
13 import com.google.api.client.http.HttpResponseException;
14 import com.google.api.services.latitude.Latitude;
15 import com.google.api.services.latitude.LatitudeRequest;
16 import com.google.api.services.latitude.model.Location;
18 import android.content.Context;
19 import android.content.res.Resources;
20 import android.text.format.Time;
21 import android.util.Log;
23 public final class LastLocation extends Oracle {
25 final String TAG = getClass().getName();
27 private String[] loc_names;
28 private String[] loc_lats;
29 private String[] loc_lons;
30 private String[] loc_dists;
31 private String myname;
32 private String registered;
33 private SayWhen sayWhen;
34 private Latitude latitude;
36 public LastLocation(APIBase base) {
38 loc_names = base.res.getStringArray(R.array.loc_names);
39 loc_lats = base.res.getStringArray(R.array.loc_lats);
40 loc_lons = base.res.getStringArray(R.array.loc_lons);
41 loc_dists = base.res.getStringArray(R.array.loc_dists);
42 myname = base.res.getString(R.string.myname);
43 registered = base.res.getString(R.string.registered);
44 sayWhen = new SayWhen(base.res);
45 latitude = Latitude.builder(base.httpTransport,
47 .setHttpRequestInitializer(
48 base.accessProtectedResource)
49 .setApplicationName("WhereAmI/1.0").build();
53 public final Utterance getResult() {
55 Log.v(TAG, "entering getResult");
56 Latitude.CurrentLocation.Get request =
57 latitude.currentLocation().get();
58 request.setGranularity("best");
59 Location cloc = request.execute();
60 Double lat = Double.parseDouble(
61 cloc.getLatitude().toString());
62 Double lon = Double.parseDouble(
63 cloc.getLongitude().toString());
64 Long tsm = Long.parseLong(
65 cloc.getTimestampMs().toString());
66 return new Utterance(true,
67 locationMessage(lat, lon, tsm));
68 } catch (GoogleJsonResponseException e) {
69 Log.e(TAG, "GoogleJsonResponseException: " + e);
70 if (e.getResponse().getStatusCode() == 401) {
71 return new Utterance(false,
72 base.authErrorMessage + "\n" +
75 return new Utterance(false, e.getMessage());
77 } catch (HttpResponseException e) {
78 Log.e(TAG, "HttpResponseException: " + e);
79 return new Utterance(false, e.getMessage());
80 } catch (IOException e) {
81 Log.e(TAG, "IOException: " + e);
82 return new Utterance(false, e.getMessage());
86 private String locationMessage(Double lat, Double lon, Long tsm) {
87 Log.v(TAG, "entering locationMessage(" + lat +
88 "," + lon + "," + tsm + ")");
89 String locmsg = "<UNSET>";
90 String agomsg = "<UNSET>";
91 for (int i = 0; i < loc_names.length; i++) {
92 Double dist = haversine(lat, lon,
93 Double.parseDouble(loc_lats[i]),
94 Double.parseDouble(loc_lons[i]));
95 Log.v(TAG, "Dist from " + loc_names[i] +
97 if ((loc_dists[i] == "0") ||
98 (dist < Double.parseDouble(loc_dists[i]))) {
99 locmsg = loc_names[i];
103 return myname + " " + locmsg + ", " + registered +
104 " " + sayWhen.say(tsm);
107 private Double toRad(Double deg) {
108 return deg * 3.14159265 / 180;
111 private Double haversine(Double lat1, Double lon1,
112 Double lat2, Double lon2) {
113 Double dlat = toRad(lat2 - lat1);
114 Double dlon = toRad(lon2 - lon1);
115 Double a = Math.sin(dlat / 2) * Math.sin(dlat / 2) +
116 Math.sin(dlon / 2) * Math.sin(dlon / 2) *
117 Math.cos(toRad(lat1)) * Math.cos(toRad(lat2));
118 Double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));