334 lines
10 KiB
PHP
334 lines
10 KiB
PHP
<?php
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declare(strict_types=1);
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ini_set('display_errors', '1');
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error_reporting(E_ALL);
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const AU_IN_KM = 149597870.7;
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const IMPORT_END_TIME = '2049-12-31 00:00:00';
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$config = require __DIR__ . '/../../config/database.php';
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$dsn = sprintf(
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'mysql:host=%s;dbname=%s;charset=%s',
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$config['host'],
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$config['dbname'],
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$config['charset'] ?? 'utf8mb4'
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);
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$pdo = new PDO(
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$dsn,
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$config['user'],
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$config['pass'],
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[
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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]
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);
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$pdo->exec("
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CREATE TABLE IF NOT EXISTS `spacecraft_tracks` (
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`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
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`mission_key` varchar(64) NOT NULL,
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`mission_name` varchar(128) NOT NULL,
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`date_tdb` datetime NOT NULL,
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`jd_tdb` decimal(16,9) NOT NULL,
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`x_km` double NOT NULL,
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`y_km` double NOT NULL,
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`z_km` double NOT NULL,
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`vx_km_s` double NOT NULL,
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`vy_km_s` double NOT NULL,
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`vz_km_s` double NOT NULL,
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`distance_km` double NOT NULL,
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`distance_au` double NOT NULL,
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`created_at` datetime NOT NULL DEFAULT current_timestamp(),
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`updated_at` datetime NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
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PRIMARY KEY (`id`),
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UNIQUE KEY `uq_spacecraft_tracks_mission_date` (`mission_key`,`date_tdb`),
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KEY `idx_spacecraft_tracks_mission_key` (`mission_key`),
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KEY `idx_spacecraft_tracks_date_tdb` (`date_tdb`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='Sonnenzentrierte Horizons-Vektoren fuer Raumsonden'
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");
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$missions = [
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[
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'key' => 'voyager1',
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'name' => 'Voyager 1',
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'command' => "'-31'",
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'start_time' => '1977-09-05 14:00:00',
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'dense_stop_time' => '1989-12-05 14:00:00',
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],
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[
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'key' => 'voyager2',
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'name' => 'Voyager 2',
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'command' => "'-32'",
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'start_time' => '1977-08-20 16:29:00',
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'dense_stop_time' => '1993-03-20 16:29:00',
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],
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[
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'key' => 'new_horizons',
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'name' => 'New Horizons',
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'command' => "'-98'",
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'start_time' => '2006-01-19 19:52:00',
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'dense_stop_time' => '2017-10-19 19:52:00',
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],
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[
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'key' => 'pioneer10',
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'name' => 'Pioneer 10',
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'command' => "'-23'",
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'start_time' => '1972-03-03 02:56:00',
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'dense_stop_time' => '1986-11-03 02:56:00',
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],
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];
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function fetchHorizonsResult(array $extraParams): string
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{
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$params = array_merge([
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'format' => 'json',
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'OBJ_DATA' => "'NO'",
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'MAKE_EPHEM' => "'YES'",
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'EPHEM_TYPE' => "'VECTORS'",
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'CENTER' => "'500@10'",
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'REF_SYSTEM' => "'ICRF'",
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'REF_PLANE' => "'ECLIPTIC'",
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'VEC_TABLE' => "'2'",
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'VEC_CORR' => "'NONE'",
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'OUT_UNITS' => "'KM-S'",
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'TIME_TYPE' => "'TDB'",
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'CSV_FORMAT' => "'YES'",
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], $extraParams);
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$query = http_build_query($params, '', '&');
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$query = str_replace(
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['%27', '%40', '%3A', '+'],
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["'", '@', ':', '%20'],
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$query
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);
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$url = 'https://ssd.jpl.nasa.gov/api/horizons.api?' . $query;
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$json = false;
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if (function_exists('curl_init')) {
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$curlHandle = curl_init($url);
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if ($curlHandle !== false) {
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curl_setopt_array($curlHandle, [
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_CONNECTTIMEOUT => 30,
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CURLOPT_TIMEOUT => 180,
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CURLOPT_USERAGENT => 'skyview-spacecraft-import/1.0',
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]);
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$curlResponse = curl_exec($curlHandle);
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$curlError = curl_error($curlHandle);
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$httpCode = (int) curl_getinfo($curlHandle, CURLINFO_RESPONSE_CODE);
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curl_close($curlHandle);
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if ($curlResponse !== false && $httpCode >= 200 && $httpCode < 300) {
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$json = $curlResponse;
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} elseif ($curlError !== '') {
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$json = false;
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}
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}
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}
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if ($json === false) {
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$context = stream_context_create([
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'http' => [
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'method' => 'GET',
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'timeout' => 180,
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'header' => "User-Agent: skyview-spacecraft-import/1.0\r\n",
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],
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]);
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$json = @file_get_contents($url, false, $context);
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}
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if ($json === false) {
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$escapedUrl = str_replace('"', '\"', $url);
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$command = 'curl.exe --silent --show-error --location --globoff "' . $escapedUrl . '"';
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$shellResponse = shell_exec($command);
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if (is_string($shellResponse) && $shellResponse !== '') {
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$json = $shellResponse;
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}
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}
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if ($json === false) {
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throw new RuntimeException('Horizons API konnte nicht geladen werden: ' . $url);
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}
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$payload = json_decode($json, true);
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if (!is_array($payload)) {
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throw new RuntimeException('Horizons API lieferte kein gueltiges JSON.');
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}
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$result = (string) ($payload['result'] ?? '');
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if (isset($payload['error']) && $payload['error'] !== '') {
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throw new RuntimeException($result !== '' ? $result : (string) $payload['error']);
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}
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return $result;
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}
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function parseHorizonsVectorRows(string $result): array
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{
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$start = strpos($result, '$$SOE');
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$end = strpos($result, '$$EOE');
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if ($start === false || $end === false || $end <= $start) {
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throw new RuntimeException('Horizons-Antwort enthaelt keinen $$SOE/$$EOE-Block.');
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}
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$block = trim(str_replace("\r", '', substr($result, $start + 5, $end - ($start + 5))));
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if ($block === '') {
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return [];
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}
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$rows = [];
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foreach (explode("\n", $block) as $rawLine) {
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$line = trim($rawLine);
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if ($line === '') {
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continue;
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}
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$parts = array_map('trim', explode(',', $line));
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if (end($parts) === '') {
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array_pop($parts);
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}
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if (count($parts) !== 8) {
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continue;
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}
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$jdTdb = (float) $parts[0];
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$dateTdbRaw = (string) $parts[1];
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$dateTdbNormalized = preg_replace('/^A\.D\.\s+/i', '', $dateTdbRaw) ?? $dateTdbRaw;
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$date = DateTimeImmutable::createFromFormat('Y-M-d H:i:s.u', $dateTdbNormalized, new DateTimeZone('UTC'));
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if (!$date instanceof DateTimeImmutable) {
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continue;
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}
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$xKm = (float) $parts[2];
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$yKm = (float) $parts[3];
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$zKm = (float) $parts[4];
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$vxKmS = (float) $parts[5];
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$vyKmS = (float) $parts[6];
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$vzKmS = (float) $parts[7];
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$distanceKm = sqrt(($xKm ** 2) + ($yKm ** 2) + ($zKm ** 2));
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$rows[$date->format('Y-m-d H:i:s')] = [
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'date_tdb' => $date->format('Y-m-d H:i:s'),
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'jd_tdb' => $jdTdb,
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'x_km' => $xKm,
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'y_km' => $yKm,
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'z_km' => $zKm,
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'vx_km_s' => $vxKmS,
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'vy_km_s' => $vyKmS,
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'vz_km_s' => $vzKmS,
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'distance_km' => $distanceKm,
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'distance_au' => $distanceKm / AU_IN_KM,
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];
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}
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ksort($rows);
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return array_values($rows);
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}
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$insertStatement = $pdo->prepare("
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INSERT INTO `spacecraft_tracks` (
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`mission_key`,
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`mission_name`,
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`date_tdb`,
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`jd_tdb`,
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`x_km`,
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`y_km`,
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`z_km`,
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`vx_km_s`,
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`vy_km_s`,
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`vz_km_s`,
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`distance_km`,
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`distance_au`
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) VALUES (
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:mission_key,
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:mission_name,
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:date_tdb,
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:jd_tdb,
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:x_km,
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:y_km,
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:z_km,
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:vx_km_s,
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:vy_km_s,
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:vz_km_s,
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:distance_km,
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:distance_au
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)
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ON DUPLICATE KEY UPDATE
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`mission_name` = VALUES(`mission_name`),
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`jd_tdb` = VALUES(`jd_tdb`),
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`x_km` = VALUES(`x_km`),
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`y_km` = VALUES(`y_km`),
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`z_km` = VALUES(`z_km`),
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`vx_km_s` = VALUES(`vx_km_s`),
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`vy_km_s` = VALUES(`vy_km_s`),
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`vz_km_s` = VALUES(`vz_km_s`),
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`distance_km` = VALUES(`distance_km`),
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`distance_au` = VALUES(`distance_au`)
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");
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$deleteStatement = $pdo->prepare('DELETE FROM `spacecraft_tracks` WHERE `mission_key` = :mission_key');
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foreach ($missions as $mission) {
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$denseRows = parseHorizonsVectorRows(fetchHorizonsResult([
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'COMMAND' => $mission['command'],
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'START_TIME' => "'" . $mission['start_time'] . "'",
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'STOP_TIME' => "'" . $mission['dense_stop_time'] . "'",
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'STEP_SIZE' => "'1 d'",
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]));
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$monthlyRows = parseHorizonsVectorRows(fetchHorizonsResult([
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'COMMAND' => $mission['command'],
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'START_TIME' => "'" . $mission['dense_stop_time'] . "'",
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'STOP_TIME' => "'" . IMPORT_END_TIME . "'",
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'STEP_SIZE' => "'1 mo'",
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]));
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$finalRows = parseHorizonsVectorRows(fetchHorizonsResult([
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'COMMAND' => $mission['command'],
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'TLIST' => "'" . IMPORT_END_TIME . "'",
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]));
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$rowsByDate = [];
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foreach (array_merge($denseRows, $monthlyRows, $finalRows) as $row) {
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$rowsByDate[$row['date_tdb']] = $row;
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}
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ksort($rowsByDate);
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$rows = array_values($rowsByDate);
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$pdo->beginTransaction();
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try {
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$deleteStatement->execute([
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':mission_key' => $mission['key'],
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]);
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foreach ($rows as $row) {
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$insertStatement->execute([
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':mission_key' => $mission['key'],
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':mission_name' => $mission['name'],
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':date_tdb' => $row['date_tdb'],
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':jd_tdb' => $row['jd_tdb'],
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':x_km' => $row['x_km'],
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':y_km' => $row['y_km'],
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':z_km' => $row['z_km'],
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':vx_km_s' => $row['vx_km_s'],
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':vy_km_s' => $row['vy_km_s'],
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':vz_km_s' => $row['vz_km_s'],
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':distance_km' => $row['distance_km'],
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':distance_au' => $row['distance_au'],
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]);
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}
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$pdo->commit();
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} catch (Throwable $e) {
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$pdo->rollBack();
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throw $e;
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}
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echo $mission['name'] . ': ' . count($rows) . " Zeilen importiert.\n";
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}
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echo "Import abgeschlossen.\n";
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