From 9970fbd17d1a67efad67f3dafaa07730f83210b5 Mon Sep 17 00:00:00 2001
From: Jacek Kowalski <Jacek@jacekk.info>
Date: Mon, 17 Jun 2019 15:48:12 +0000
Subject: [PATCH] Add mapping function as Mapper::mapUsingOffset() parameter

---
 parse.php |  101 ++++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 84 insertions(+), 17 deletions(-)

diff --git a/parse.php b/parse.php
index 02e5f28..3660f53 100644
--- a/parse.php
+++ b/parse.php
@@ -1,48 +1,115 @@
 <?php
+require_once(__DIR__.'/lib/database.php');
 require_once(__DIR__.'/lib/fetch.php');
 require_once(__DIR__.'/lib/mapper.php');
 
 $logger = new Monolog\Logger('Parse changes');
 
 $sources = [
-	'buses' => [
-		'gtfs' => 'ftp://ztp.krakow.pl/VehiclePositions_A.pb',
-		'gtfs_file' => 'VehiclePositions_A.pb',
-		'ttss' => 'http://91.223.13.70/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
+	'bus' => [
+		'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions_A.pb',
+		'gtfsrt_file' => 'VehiclePositions_A.pb',
+		'ttss' => 'http://ttss.mpk.krakow.pl/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
 		'ttss_file' => 'vehicles_A.json',
+		'database' => 'mapping_A.sqlite3',
 		'result' => 'mapping_A.json',
+		'mapper' => 'numToTypeB',
 	],
 ];
 
 foreach($sources as $name => $source) {
 	$logger = new Monolog\Logger('fetch_'.$name);
 	try {
+		foreach(['gtfsrt_file', 'ttss_file', 'database', 'result'] as $field) {
+			$source[$field] = __DIR__.'/data/'.$source[$field];
+		}
+		$source['result_temp'] = $source['result'].'.tmp';
+		
 		$logger->info('Fetching '.$name.' position data from FTP...');
-		$updated = ftp_fetch_if_newer($source['gtfs'], __DIR__.'/data/'.$source['gtfs_file']);
+		$updated = ftp_fetch_if_newer($source['gtfsrt'], $source['gtfsrt_file']);
 		if(!$updated) {
 			$logger->info('Nothing to do, remote file not newer than local one');
 			continue;
 		}
 		
-		$logger->info('Fetching '.$name.' positions from TTSS...');
-		fetch($source['ttss'], __DIR__.'/data/'.$source['ttss_file']);
+		$logger->info('Fetching '.$name.' position data from TTSS...');
+		fetch($source['ttss'], $source['ttss_file']);
 		
 		$logger->info('Loading data...');
 		$mapper = new Mapper();
-		$mapper->loadTTSS(__DIR__.'/data/'.$source['ttss_file']);
-		$mapper->loadGTFS(__DIR__.'/data/'.$source['gtfs_file']);
+		
+		$mapper->loadTTSS($source['ttss_file']);
+		$timeDifference = time() - $mapper->getTTSSDate();
+		if(abs($timeDifference) > 60) {
+			throw new Exception('TTSS timestamp difference ('.$timeDifference.'s) is too high, aborting!');
+		}
+		
+		$mapper->loadGTFSRT($source['gtfsrt_file']);
+		$timeDifference = time() - $mapper->getGTFSRTDate();
+		if(abs($timeDifference) > 60) {
+			throw new Exception('GTFSRT timestamp difference ('.$timeDifference.'s) is too high, aborting!');
+		}
+		
+		$db = new Database($source['database']);
 		
 		$logger->info('Finding correct offset...');
 		$offset = $mapper->findOffset();
-		if($offset) {
-			$logger->info('Got offset '.$offset.', creating mapping...');
-			$mapping = $mapper->getMapping($offset);
-			$json = json_encode($mapping);
-			if(!file_put_contents(__DIR__.'/data/'.$source['result'].'.tmp', $json)) {
-				throw new Exception('Result save failed');
-			}
-			rename(__DIR__.'/data/'.$source['result'].'.tmp', __DIR__.'/data/'.$source['result']);
+		if(!$offset) {
+			throw new Exception('Offset not found');
 		}
+		
+		$logger->info('Got offset '.$offset.', creating mapping...');
+		$mapping = $mapper->mapUsingOffset($offset, $source['mapper']);
+		
+		$logger->info('Checking the data for correctness...');
+		$weight = count($mapping);
+		
+		$correct = 0;
+		$incorrect = 0;
+		$old = 0;
+		$maxWeight = 0;
+		foreach($mapping as $id => $vehicle) {
+			$dbVehicle = $db->getById($id);
+			if($dbVehicle) {
+				$maxWeight = max($maxWeight, $dbVehicle['weight']);
+				if((int)substr($vehicle['num'], 2) == (int)$dbVehicle['num']) {
+					$correct += 1;
+				} else {
+					$incorrect += 1;
+				}
+				continue;
+			}
+			
+			$dbVehicle = $db->getByNum($vehicle['num']);
+			if($dbVehicle && $dbVehicle['id'] != $id) {
+				$old += 1;
+			}
+		}
+		$logger->info('Weight: '.$weight.', correct: '.$correct.', incorrect: '.$incorrect.', old: '.$old);
+		
+		$previousMapping = NULL;
+		if($incorrect > $correct && $maxWeight > $weight) {
+			throw new Exception('Ignoring result due to better data already present');
+		} elseif($old > $correct) {
+			$logger->warn('Replacing DB data with the new mapping');
+			$db->clear();
+		} else {
+			$previousMapping = @json_decode(@file_get_contents($source['result']), TRUE);
+		}
+		
+		$db->addMapping($mapping);
+		
+		if(is_array($previousMapping)) {
+			$logger->info('Merging previous data with current mapping');
+			$mapping = $mapping + $previousMapping;
+			ksort($mapping);
+		}
+		
+		$json = json_encode($mapping);
+		if(!file_put_contents($source['result_temp'], $json)) {
+			throw new Exception('Result save failed');
+		}
+		rename($source['result_temp'], $source['result']);
 		$logger->info('Finished');
 	} catch(Throwable $e) {
 		$logger->error($e->getMessage(), ['exception' => $e, 'exception_string' => (string)$e]);

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