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<?php |
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namespace Maps\Geocoders; |
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use DataValues\Geo\Values\LatLongValue; |
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use FileFetcher\FileFetcher; |
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use FileFetcher\FileFetchingException; |
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/** |
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* Webservice documentation: http://code.google.com/apis/maps/documentation/geocoding/ |
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* |
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* @since 4.5 |
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* |
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* @licence GNU GPL v2+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class GoogleGeocoder implements Geocoder { |
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private $fileFetcher; |
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private $apiKey; |
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private $apiVersion; |
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/** |
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* @param FileFetcher $fileFetcher |
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* @param string $apiKey |
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* @param string $apiVersion |
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*/ |
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public function __construct( FileFetcher $fileFetcher, $apiKey, $apiVersion ) { |
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$this->fileFetcher = $fileFetcher; |
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$this->apiKey = $apiKey; |
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$this->apiVersion = $apiVersion; |
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} |
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/** |
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* @param string $address |
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* |
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* @return LatLongValue|null |
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*/ |
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public function geocode( $address ) { |
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try { |
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$response = $this->fileFetcher->fetchFile( $this->getRequestUrl( $address ) ); |
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} |
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catch ( FileFetchingException $ex ) { |
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return null; |
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} |
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$jsonResponse = json_decode( $response, true ); |
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if ( !is_array( $jsonResponse ) ) { |
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return null; |
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} |
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if ( !array_key_exists( 'results', $jsonResponse ) || count( $jsonResponse['results'] ) < 1 ) { |
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return null; |
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} |
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$location = @$jsonResponse['results'][0]['geometry']['location']; |
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if ( !is_array( $location ) |
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|| !array_key_exists( 'lat', $location ) || !array_key_exists( 'lng', $location ) ) { |
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return null; |
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} |
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return new LatLongValue( (float)$location['lat'], (float)$location['lng'] ); |
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} |
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/** |
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* @param string $address |
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* |
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* @return string |
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*/ |
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private function getRequestUrl( $address ) { |
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$urlArgs = [ |
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'address' => $address, |
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'key' => $this->apiKey, |
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]; |
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if ( $this->apiVersion !== '' ) { |
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$urlArgs['v'] = $this->apiVersion; |
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} |
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return 'https://maps.googleapis.com/maps/api/geocode/json?' . http_build_query( $urlArgs ); |
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} |
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} |
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JeroenDeDauw /
Maps
