/**
* Geocoding function that uses nominatin engine.
*
* @param string Address
* @return string[]|boolean Location information [country, country_id, location_name, latitude, longitude], FALSE if unsucessful
*
*/
public static function nominatim($address)
{
$payload = FALSE;
$result = FALSE;
$params = array("format" => "json", "addressdetails" => 1, "accept-language" => Settings_Model::get('site_language'), "q" => $address, "zoom" => 200);
$url = "http://nominatim.openstreetmap.org/search/?" . http_build_query($params);
$url_request = new HttpClient($url);
if ($result = $url_request->execute()) {
$payload = json_decode($result);
} else {
Kohana::log('error', "Geocode - Nominatin\n" . $url_request->get_error_msg());
}
// TODO: Nomaninatins documentation on error returning is poor - this could be improved to have meaningful error messages
if (!$payload || count($payload) == 0) {
return FALSE;
}
$result = array_shift($payload);
$country_name = isset($result->address->country) ? $result->address->country : $result->display_name;
$country = self::getCountryId($country_name);
// if we can't find the country by name, try finding it by code
if ($country == 0 && isset($result->address->country_code)) {
$country = self::getCountryIdByCode($result->address->country_code);
}
$geocodes = array('country' => $country_name, 'country_id' => $country, 'location_name' => $result->display_name, 'latitude' => $result->lat, 'longitude' => $result->lon);
return $geocodes;
}
