117 lines
4.6 KiB
PHP
117 lines
4.6 KiB
PHP
<?php
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declare(strict_types=1);
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const DASHBOARD_VBB_STOP_ID = '900086103';
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const DASHBOARD_VBB_BUS_PRODUCTS = 8;
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const DASHBOARD_VBB_API_URL = 'https://fahrinfo.vbb.de/restproxy/latest/departureBoard';
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function dashboard_vbb_datetime(array $departure, bool $realtime = false): ?DateTimeImmutable
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{
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$time = trim((string) ($departure[$realtime ? 'rtTime' : 'time'] ?? ''));
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if ($time === '') {
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return null;
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}
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$date = trim((string) ($departure[$realtime ? 'rtDate' : 'date'] ?? $departure['date'] ?? ''));
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$value = DateTimeImmutable::createFromFormat(
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'!Y-m-d H:i:s',
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$date . ' ' . $time,
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new DateTimeZone(DASHBOARD_TIMEZONE)
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);
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return $value ?: null;
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}
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function dashboard_vbb_normalize_departure(array $departure): ?array
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{
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$product = $departure['ProductAtStop'] ?? ($departure['Product'][0] ?? []);
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if (!is_array($product) || stripos((string) ($product['catOut'] ?? $product['catOutL'] ?? ''), 'bus') === false) {
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return null;
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}
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$planned = dashboard_vbb_datetime($departure);
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if (!$planned) {
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return null;
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}
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$actual = dashboard_vbb_datetime($departure, true);
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$status = strtoupper(trim((string) ($departure['JourneyStatus'] ?? '')));
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$cancelled = filter_var($departure['cancelled'] ?? false, FILTER_VALIDATE_BOOLEAN) || $status === 'C';
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$line = trim((string) ($product['displayNumber'] ?? ''));
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$line = $line !== '' ? $line : trim((string) ($product['line'] ?? $product['name'] ?? $departure['name'] ?? 'Bus'));
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return [
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'plannedWhen' => $planned->format(DATE_ATOM),
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'when' => $actual?->format(DATE_ATOM),
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'delay' => $actual ? $actual->getTimestamp() - $planned->getTimestamp() : null,
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'cancelled' => $cancelled,
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'line' => ['name' => $line],
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'direction' => trim((string) ($departure['direction'] ?? '')),
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];
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}
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function dashboard_fetch_departures(): array
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{
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$directory = __DIR__ . '/../cache';
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if (!is_dir($directory) && !@mkdir($directory, 0775, true) && !is_dir($directory)) {
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throw new RuntimeException('VBB-Cache nicht beschreibbar.');
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}
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$file = fopen($directory . '/vbb-' . DASHBOARD_VBB_STOP_ID . '.json', 'c+');
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if (!$file) {
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throw new RuntimeException('VBB-Cache nicht verfügbar.');
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}
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try {
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if (!flock($file, LOCK_EX)) {
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throw new RuntimeException('VBB-Cache konnte nicht gesperrt werden.');
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}
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$cache = json_decode(stream_get_contents($file), true) ?: [];
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if (microtime(true) >= ($cache['retryAt'] ?? 0)) {
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try {
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$query = http_build_query([
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'accessId' => intranet_env('VBB_ACCESS_ID'),
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'id' => DASHBOARD_VBB_STOP_ID,
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'duration' => 120,
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'maxJourneys' => 30,
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'products' => DASHBOARD_VBB_BUS_PRODUCTS,
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'rtMode' => 'SERVER_DEFAULT',
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'type' => 'DEP',
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'format' => 'json',
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'lang' => 'de',
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], '', '&', PHP_QUERY_RFC3986);
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$data = dashboard_http_json(DASHBOARD_VBB_API_URL . '?' . $query);
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if (!isset($data['Departure']) || !is_array($data['Departure'])) {
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throw new RuntimeException('Unerwartete VBB-Antwort.');
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}
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$departures = [];
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foreach ($data['Departure'] as $departure) {
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if (is_array($departure) && ($normalized = dashboard_vbb_normalize_departure($departure))) {
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$departures[] = $normalized;
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}
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}
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$now = microtime(true);
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$cache = [
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'departures' => array_slice($departures, 0, 30),
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'updatedAt' => (int) round($now * 1000),
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'retryAt' => $now + 30,
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'unavailable' => false,
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];
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} catch (Throwable $error) {
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// Eine letzte erfolgreiche Antwort behalten und die API nach Fehlern nicht belasten.
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error_log('Dashboard VBB: ' . $error->getMessage());
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$cache['unavailable'] = true;
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$cache['retryAt'] = microtime(true) + 60;
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}
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rewind($file);
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$json = json_encode($cache, JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR);
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if (!ftruncate($file, 0) || fwrite($file, $json) !== strlen($json) || !fflush($file)) {
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throw new RuntimeException('VBB-Cache konnte nicht gespeichert werden.');
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}
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}
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return $cache + ['departures' => [], 'updatedAt' => 0];
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} finally {
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fclose($file);
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}
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}
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