| commit | author | age | ||
| 4673cc | 1 | <?php |
| JK | 2 | use transit_realtime\FeedMessage; |
| 3 | ||
| 4 | class Mapper { | |
| 9afb6b | 5 | private $ttssDate = NULL; |
| 0c85a7 | 6 | private $ttssTrips = []; |
| 9afb6b | 7 | private $gtfsrtDate = NULL; |
| 0c85a7 | 8 | private $gtfsrtTrips = []; |
| 4673cc | 9 | private $logger = NULL; |
| JK | 10 | |
| 11 | private $specialNames = [ | |
| 12 | 'Zjazd do zajezdni', | |
| 13 | 'Przejazd techniczny', | |
| 14 | 'Wyjazd na trasę', | |
| 15 | ]; | |
| 16 | ||
| 17 | public function __construct() { | |
| 18 | $this->logger = new Monolog\Logger(__CLASS__); | |
| 19 | } | |
| 20 | ||
| 21 | public static function convertTripId($tripId) { | |
| 22 | $tripId = explode('_', $tripId); | |
| 23 | if($tripId[0] != 'block') return; | |
| 24 | if($tripId[2] != 'trip') return; | |
| 25 | return 4096 * (int)$tripId[1] + (int)$tripId[3]; | |
| 26 | } | |
| 27 | ||
| 28 | public function loadTTSS($file) { | |
| 0c85a7 | 29 | $ttss = json_decode(file_get_contents($file)); |
| 9afb6b | 30 | $this->ttssDate = $ttss->lastUpdate; |
| 0c85a7 | 31 | foreach($ttss->vehicles as $vehicle) { |
| 4673cc | 32 | if(isset($vehicle->isDeleted) && $vehicle->isDeleted) continue; |
| JK | 33 | if(!isset($vehicle->tripId) || !$vehicle->tripId) continue; |
| 34 | if(!isset($vehicle->name) || !$vehicle->name) continue; | |
| 35 | if(!isset($vehicle->latitude) || !$vehicle->latitude) continue; | |
| 36 | if(!isset($vehicle->longitude) || !$vehicle->longitude) continue; | |
| c077c7 | 37 | list($line, $direction) = explode(' ', $vehicle->name, 2); |
| JK | 38 | foreach($this->specialNames as $specialName) { |
| 39 | if(substr($vehicle->name, -strlen($specialName)) == $specialName) { | |
| 4673cc | 40 | continue; |
| JK | 41 | } |
| 42 | } | |
| 7b7026 | 43 | $this->ttssTrips[(string)$vehicle->tripId] = [ |
| JK | 44 | 'id' => (string)$vehicle->id, |
| c077c7 | 45 | 'line' => $line, |
| JK | 46 | 'direction' => $direction, |
| 4673cc | 47 | 'latitude' => (float)$vehicle->latitude / 3600000.0, |
| JK | 48 | 'longitude' => (float)$vehicle->longitude / 3600000.0, |
| 49 | ]; | |
| 50 | } | |
| 0c85a7 | 51 | ksort($this->ttssTrips); |
| 4673cc | 52 | } |
| JK | 53 | |
| 9afb6b | 54 | public function getTTSSDate() { |
| JK | 55 | return $this->ttssDate / 1000.0; |
| 56 | } | |
| 57 | ||
| c077c7 | 58 | public function getTTSSTrips() { |
| JK | 59 | return $this->ttssTrips; |
| 60 | } | |
| 61 | ||
| 0c85a7 | 62 | public function loadGTFSRT($file) { |
| 4673cc | 63 | $data = file_get_contents($file); |
| JK | 64 | $feed = new FeedMessage(); |
| 65 | $feed->parse($data); | |
| 9afb6b | 66 | $this->gtfsrtDate = $feed->header->timestamp; |
| 4673cc | 67 | foreach ($feed->getEntityList() as $entity) { |
| JK | 68 | $vehiclePosition = $entity->getVehicle(); |
| 69 | $position = $vehiclePosition->getPosition(); | |
| 70 | $vehicle = $vehiclePosition->getVehicle(); | |
| 71 | $trip = $vehiclePosition->getTrip(); | |
| 72 | $tripId = $trip->getTripId(); | |
| 0c85a7 | 73 | $this->gtfsrtTrips[self::convertTripId($tripId)] = [ |
| 7b7026 | 74 | 'id' => (string)$entity->getId(), |
| 4673cc | 75 | 'num' => $vehicle->getLicensePlate(), |
| JK | 76 | 'tripId' => $tripId, |
| 77 | 'latitude' => $position->getLatitude(), | |
| 78 | 'longitude' => $position->getLongitude(), | |
| 79 | ]; | |
| 80 | } | |
| 0c85a7 | 81 | ksort($this->gtfsrtTrips); |
| 4673cc | 82 | } |
| JK | 83 | |
| 9afb6b | 84 | public function getGTFSRTDate() { |
| JK | 85 | return $this->gtfsrtDate; |
| 86 | } | |
| 87 | ||
| 4673cc | 88 | public function findOffset() { |
| 0c85a7 | 89 | if(count($this->ttssTrips) == 0 || count($this->gtfsrtTrips) == 0) { |
| 4673cc | 90 | return NULL; |
| JK | 91 | } |
| 92 | ||
| 0c85a7 | 93 | $ttssTripIds = array_keys($this->ttssTrips); |
| JK | 94 | $gtfsTripIds = array_keys($this->gtfsrtTrips); |
| 4673cc | 95 | |
| JK | 96 | $possibleOffsets = []; |
| 0c85a7 | 97 | for($i = 0; $i < count($this->ttssTrips); $i++) { |
| JK | 98 | for($j = 0; $j < count($this->gtfsrtTrips); $j++) { |
| 99 | $possibleOffsets[$ttssTripIds[$i] - $gtfsTripIds[$j]] = TRUE; | |
| 4673cc | 100 | } |
| JK | 101 | } |
| 102 | $possibleOffsets = array_keys($possibleOffsets); | |
| 103 | ||
| 104 | $bestOffset = 0; | |
| 105 | $maxMatched = 0; | |
| 106 | $options = 0; | |
| 107 | ||
| 108 | foreach($possibleOffsets as $offset) { | |
| 109 | $matched = 0; | |
| 110 | ||
| 111 | foreach($gtfsTripIds as $tripId) { | |
| 112 | $tripId += $offset; | |
| 0c85a7 | 113 | if(isset($this->ttssTrips[$tripId])) { |
| 4673cc | 114 | $matched++; |
| JK | 115 | } |
| 116 | } | |
| 117 | ||
| 118 | if($matched > $maxMatched) { | |
| 119 | $bestOffset = $offset; | |
| 120 | $maxMatched = $matched; | |
| 121 | $options = 1; | |
| 122 | } elseif($matched == $maxMatched) { | |
| 123 | $options++; | |
| 124 | } | |
| 125 | } | |
| 126 | ||
| 127 | if($options != 1) { | |
| 128 | throw new Exception('Found '.$options.' possible mappings!'); | |
| 129 | } | |
| 130 | return $bestOffset; | |
| 131 | } | |
| 132 | ||
| 7b7026 | 133 | public function mapUsingOffset($offset) { |
| 4673cc | 134 | $result = []; |
| 0c85a7 | 135 | foreach($this->gtfsrtTrips as $gtfsTripId => $gtfsTrip) { |
| JK | 136 | $ttssTripId = $gtfsTripId + $offset; |
| 137 | if(isset($this->ttssTrips[$ttssTripId])) { | |
| 7b7026 | 138 | $result[$this->ttssTrips[$ttssTripId]['id']] = $gtfsTrip['id']; |
| 4673cc | 139 | } |
| JK | 140 | } |
| 141 | return $result; | |
| 142 | } | |
| 143 | } | |
