commit | author | age
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<?php |
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use transit_realtime\FeedMessage; |
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class Mapper { |
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private $ttssDate = NULL; |
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private $ttssTrips = []; |
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private $ttssVehicleToTrip = []; |
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private $gtfsrtDate = NULL; |
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private $gtfsrtTrips = []; |
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private $logger = NULL; |
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private $specialNames = [ |
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'Zjazd do zajezdni', |
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'Przejazd techniczny', |
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'Wyjazd na trasÄ™', |
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]; |
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public function __construct() { |
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$this->logger = new Monolog\Logger(__CLASS__); |
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} |
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public static function convertTripId($tripId) { |
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$tripId = explode('_', $tripId); |
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if($tripId[0] != 'block') return; |
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if($tripId[2] != 'trip') return; |
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return 4096 * (int)$tripId[1] + (int)$tripId[3]; |
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} |
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public function loadTTSS($file) { |
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$ttss = json_decode(file_get_contents($file)); |
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$this->ttssDate = $ttss->lastUpdate; |
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foreach($ttss->vehicles as $vehicle) { |
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if(isset($vehicle->isDeleted) && $vehicle->isDeleted) continue; |
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if(!isset($vehicle->tripId) || !$vehicle->tripId) continue; |
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if(!isset($vehicle->name) || !$vehicle->name) continue; |
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if(!isset($vehicle->latitude) || !$vehicle->latitude) continue; |
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if(!isset($vehicle->longitude) || !$vehicle->longitude) continue; |
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list($line, $direction) = explode(' ', $vehicle->name, 2); |
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$trip = [ |
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'id' => (string)$vehicle->id, |
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'line' => $line, |
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'direction' => $direction, |
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'latitude' => (float)$vehicle->latitude / 3600000.0, |
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'longitude' => (float)$vehicle->longitude / 3600000.0, |
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]; |
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$this->ttssTrips[(string)$vehicle->tripId] = $trip; |
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$this->ttssVehicleToTrip[(string)$vehicle->id] = $trip; |
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} |
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ksort($this->ttssTrips); |
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} |
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public function getTTSSDate() { |
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return $this->ttssDate / 1000.0; |
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} |
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public function getTTSSTrips() { |
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return $this->ttssTrips; |
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} |
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public function getTTSSVehicleToTrip() { |
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return $this->ttssVehicleToTrip; |
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} |
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public function getTTSSTrip($id) { |
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return $this->ttssTrips[$id] ?? NULL; |
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} |
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public function getTTSSVehicleTrip($id) { |
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return $this->ttssVehicleToTrip[$id] ?? NULL; |
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} |
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public function loadGTFSRT($file) { |
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$data = file_get_contents($file); |
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$feed = new FeedMessage(); |
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$feed->parse($data); |
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$this->gtfsrtDate = $feed->header->timestamp; |
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foreach ($feed->getEntityList() as $entity) { |
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$vehiclePosition = $entity->getVehicle(); |
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$position = $vehiclePosition->getPosition(); |
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$vehicle = $vehiclePosition->getVehicle(); |
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$trip = $vehiclePosition->getTrip(); |
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$tripId = $trip->getTripId(); |
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$this->gtfsrtTrips[self::convertTripId($tripId)] = [ |
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'id' => (string)$entity->getId(), |
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'num' => $vehicle->getLicensePlate(), |
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'tripId' => $tripId, |
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'latitude' => $position->getLatitude(), |
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'longitude' => $position->getLongitude(), |
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]; |
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} |
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ksort($this->gtfsrtTrips); |
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} |
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public function getGTFSRTDate() { |
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return $this->gtfsrtDate; |
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} |
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public function findOffset() { |
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if(count($this->ttssTrips) == 0 || count($this->gtfsrtTrips) == 0) { |
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return NULL; |
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} |
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$ttssTripIds = array_keys($this->ttssTrips); |
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$gtfsTripIds = array_keys($this->gtfsrtTrips); |
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$possibleOffsets = []; |
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for($i = 0; $i < count($this->ttssTrips); $i++) { |
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for($j = 0; $j < count($this->gtfsrtTrips); $j++) { |
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$possibleOffsets[$ttssTripIds[$i] - $gtfsTripIds[$j]] = TRUE; |
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} |
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} |
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$possibleOffsets = array_keys($possibleOffsets); |
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$bestOffset = 0; |
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$maxMatched = 0; |
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$options = 0; |
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foreach($possibleOffsets as $offset) { |
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$matched = 0; |
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foreach($gtfsTripIds as $tripId) { |
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$tripId += $offset; |
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if(isset($this->ttssTrips[$tripId])) { |
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$matched++; |
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} |
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} |
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if($matched > $maxMatched) { |
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$bestOffset = $offset; |
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$maxMatched = $matched; |
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$options = 1; |
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} elseif($matched == $maxMatched) { |
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$options++; |
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} |
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} |
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if($options != 1) { |
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throw new Exception('Found '.$options.' possible mappings!'); |
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} |
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return $bestOffset; |
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} |
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public function mapVehicleIdsUsingOffset($offset) { |
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$result = []; |
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foreach($this->gtfsrtTrips as $gtfsTripId => $gtfsTrip) { |
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$ttssTripId = $gtfsTripId + $offset; |
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if(isset($this->ttssTrips[$ttssTripId])) { |
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$result[$this->ttssTrips[$ttssTripId]['id']] = $gtfsTrip['id']; |
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} |
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} |
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return $result; |
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} |
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} |