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start getting locations from remote services
[quix0rs-gnu-social.git] / lib / location.php
1 <?php
2 /**
3  * StatusNet, the distributed open-source microblogging tool
4  *
5  * Class for locations
6  *
7  * PHP version 5
8  *
9  * LICENCE: This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU Affero General Public License as published by
11  * the Free Software Foundation, either version 3 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU Affero General Public License for more details.
18  *
19  * You should have received a copy of the GNU Affero General Public License
20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21  *
22  * @category  Location
23  * @package   StatusNet
24  * @author    Evan Prodromou <evan@status.net>
25  * @copyright 2009 StatusNet, Inc.
26  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27  * @link      http://status.net/
28  */
29
30 if (!defined('STATUSNET') && !defined('LACONICA')) {
31     exit(1);
32 }
33
34 /**
35  * class for locations
36  *
37  * @category Location
38  * @package  StatusNet
39  * @author   Evan Prodromou <evan@status.net>
40  * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
41  * @link     http://status.net/
42  */
43
44 class Location
45 {
46     public $lat;
47     public $lon;
48     public $location_id;
49     public $location_ns;
50
51     var $names;
52
53     const geonames = 1;
54     const whereOnEarth = 2;
55
56     static function fromName($name, $language=null, $location_ns=null)
57     {
58         if (is_null($language)) {
59             $language = common_language();
60         }
61         if (is_null($location_ns)) {
62             $location_ns = common_config('location', 'namespace');
63         }
64
65         $location = null;
66
67         if (Event::handle('LocationFromName', array($name, $language, $location_ns, &$location))) {
68
69             switch ($location_ns) {
70              case Location::geonames:
71                 return Location::fromGeonamesName($name, $language);
72                 break;
73              case Location::whereOnEarth:
74                 return Location::fromWhereOnEarthName($name, $language);
75                 break;
76             }
77         }
78
79         return $location;
80     }
81
82     static function fromGeonamesName($name, $language)
83     {
84         $location = null;
85         $client = HTTPClient::start();
86
87         // XXX: break down a name by commas, narrow by each
88
89         $str = http_build_query(array('maxRows' => 1,
90                                       'q' => $name,
91                                       'lang' => $language,
92                                       'type' => 'json'));
93
94         $result = $client->get('http://ws.geonames.org/search?'.$str);
95
96         if ($result->code == "200") {
97             $rj = json_decode($result->body);
98             if (count($rj['geonames']) > 0) {
99                 $n = $rj['geonames'][0];
100                 $location = new Location();
101                 $location->lat = $n->lat;
102                 $location->lon = $n->lon;
103                 $location->name = $n->name;
104                 $location->location_id = $n->geonameId;
105                 $location->location_ns = Location:geonames;
106             }
107         }
108
109         return $location;
110     }
111
112     static function fromId($location_id, $location_ns = null)
113     {
114         if (is_null($location_ns)) {
115             $location_ns = common_config('location', 'namespace');
116         }
117     }
118
119     function getName($language=null)
120     {
121         if (is_null($language)) {
122             $language = common_language();
123         }
124
125         if (array_key_exists($this->names, $language)) {
126             return $this->names[$language];
127         }
128     }
129 }