make accessProtectedResource a method
[WhereAmI.git] / src / org / average / whereami / LastLocation.java
1 package org.average.whereami;
2
3 import org.average.whereami.PersistentStore;
4 import org.average.whereami.SayWhen;
5
6 import java.lang.Math;
7 import java.io.IOException;
8
9 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
10 import com.google.api.client.http.HttpResponseException;
11 import com.google.api.services.latitude.Latitude;
12 import com.google.api.services.latitude.LatitudeRequest;
13 import com.google.api.services.latitude.model.Location;
14
15 import android.content.Context;
16 import android.content.res.Resources;
17 import android.text.format.Time;
18 import android.util.Log;
19
20 public final class LastLocation extends Oracle {
21
22         final String TAG = getClass().getName();
23
24         private String[] loc_names;
25         private String[] loc_lats;
26         private String[] loc_lons;
27         private String[] loc_dists;
28         private String myname;
29         private String registered;
30         private SayWhen sayWhen;
31
32         public LastLocation(final Resources res, final PersistentStore store) {
33                 super(res, store);
34                 loc_names = res.getStringArray(R.array.loc_names);
35                 loc_lats = res.getStringArray(R.array.loc_lats);
36                 loc_lons = res.getStringArray(R.array.loc_lons);
37                 loc_dists = res.getStringArray(R.array.loc_dists);
38                 myname = res.getString(R.string.myname);
39                 registered = res.getString(R.string.registered);
40                 sayWhen = new SayWhen(res);
41         }
42
43         @Override
44         public final String getResult() {
45                 Latitude latitude = Latitude.builder(httpTransport, jsonFactory)
46                         .setHttpRequestInitializer(accessProtectedResource())
47                         .setApplicationName("WhereAmI/1.0").build();
48                 try {
49                         Log.v(TAG, "entering getResult");
50                         Latitude.CurrentLocation.Get request =
51                                 latitude.currentLocation().get();
52                         request.setGranularity("best");
53                         Location cloc = request.execute();
54                         Double lat = Double.parseDouble(
55                                         cloc.getLatitude().toString());
56                         Double lon = Double.parseDouble(
57                                         cloc.getLongitude().toString());
58                         Long tsm = Long.parseLong(
59                                         cloc.getTimestampMs().toString());
60                         return locationMessage(lat, lon, tsm);
61                 } catch (GoogleJsonResponseException e) {
62                         Log.e(TAG, "GoogleJsonResponseException: " + e);
63                         if (e.getResponse().getStatusCode() == 401) {
64                                 return authErrorMessage;
65                         } else {
66                                 return e.getMessage();
67                         }
68                 } catch (HttpResponseException e) {
69                         Log.e(TAG, "HttpResponseException: " + e);
70                         return e.getMessage();
71                 } catch (IOException e) {
72                         e.printStackTrace();
73                         return e.getMessage();
74                 }
75         }
76
77         private String locationMessage(Double lat, Double lon, Long tsm) {
78                 Log.v(TAG, "entering locationMessage(" + lat +
79                                 "," + lon + "," + tsm + ")");
80                 String locmsg = "<UNSET>";
81                 String agomsg = "<UNSET>";
82                 for (int i = 0; i < loc_names.length; i++) {
83                         Double dist = haversine(lat, lon,
84                                         Double.parseDouble(loc_lats[i]),
85                                         Double.parseDouble(loc_lons[i]));
86                         Log.v(TAG, "Dist from " + loc_names[i] +
87                                 " is " + dist);
88                         if ((loc_dists[i] == "0") ||
89                             (dist < Double.parseDouble(loc_dists[i]))) {
90                                 locmsg = loc_names[i];
91                                 break;
92                         }
93                 }
94                 return myname + " " + locmsg + ", " + registered +
95                         " " + sayWhen.say(tsm);
96         }
97
98         private Double toRad(Double deg) {
99                 return deg * 3.14159265 / 180;
100         }
101
102         private Double haversine(Double lat1, Double lon1,
103                                 Double lat2, Double lon2) {
104                 Double dlat = toRad(lat2 - lat1);
105                 Double dlon = toRad(lon2 - lon1);
106                 Double a = Math.sin(dlat / 2) * Math.sin(dlat / 2) +
107                         Math.sin(dlon / 2) * Math.sin(dlon / 2) *
108                         Math.cos(toRad(lat1)) * Math.cos(toRad(lat2));
109                 Double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
110                 return 6371 * c;
111         }
112 }