fix: allow hotel-less travel data

addresses #869ckkwh7

src/BusProNet/XmlLoader/HotelLoader.php

@@ -91,6 +91,12 @@ class HotelLoader extends AbstractLoader
     public function patchHotelDetails(Travel $travel): void
     {
         $hotelId = $travel->hotelId;
+        if (null === $hotelId) {
+            $travel->hotel = null;
+
+            return;
+        }
+
         try {
             $hotel = $this->loadById($hotelId);
             $travel->hotel = $hotel;

src/BusProNet/XmlParser/TravelParser.php

@@ -60,7 +60,9 @@ class TravelParser extends AbstractParser
 
         $travel = new Travel();
         $travel->id = (int) $this->getRequiredAttrValue($node, 'idbuspro', 'travel termin node');
-        $travel->hotelId = (int) $this->getRequiredAttrValue($hotelNode, 'idbuspro', 'travel hotel node');
+        $travel->hotelId = null !== $hotelNode
+            ? (int) $this->getRequiredAttrValue($hotelNode, 'idbuspro', 'travel hotel node')
+            : null;
         $travel->label = $this->getStringOrNullValue($node->filterXPath('.//text'));
         $travel->dateFrom = $dateFrom;
         $travel->dateTo = $dateTo;
@@ -80,7 +82,7 @@ class TravelParser extends AbstractParser
             ->getAdditionalServices($node->filterXPath('.//lei_sonstiges[not(ancestor::hotel)]/leistung'));
         $travel->transportationServices = $this
             ->getTransportationServices($node->filterXPath('.//lei_befoerderung/leistung'));
-        $travel->rooms = $this->getRooms($hotelNode);
+        $travel->rooms = null !== $hotelNode ? $this->getRooms($hotelNode) : [];
         $travel->pickups = $this->getPickups($node->filterXPath('.//zustiege/zustieg'), $dateFrom, true);
         $travel->dropOffs = $this->getPickups($node->filterXPath('.//zustiege_rueck/zustieg_rueck'), $dateTo, false);
 
@@ -319,16 +321,16 @@ class TravelParser extends AbstractParser
      * @param Crawler  $node    The XML node containing hotel data
      * @param int|null $hotelId Optional hotel ID to filter by
      *
-     * @return Crawler The hotel XML node
+     * @return Crawler|null The hotel XML node or null if none exists and no specific hotel was requested
      */
-    public function getHotelNode(Crawler $node, ?int $hotelId): Crawler
+    public function getHotelNode(Crawler $node, ?int $hotelId): ?Crawler
     {
         // In case not hotel id is provided, take the first hotel node (which is most probably the only one)
         if (null === $hotelId) {
             $hotelNode = $node->filterXPath('.//hotel');
 
             if (0 === $hotelNode->count()) {
-                throw new \InvalidArgumentException('No hotel node found in travel XML.');
+                return null;
             }
 
             return $hotelNode->first();

tests/BusProNet/XmlLoader/HotelLoaderTest.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\BusProNet\XmlLoader;
+
+use App\BusProNet\Model\Travel;
+use App\BusProNet\XmlLoader\HotelLoader;
+use League\Flysystem\FilesystemOperator;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+
+class HotelLoaderTest extends TestCase
+{
+    public function testPatchHotelDetailsSkipsWhenTravelHasNoHotelId(): void
+    {
+        $filesystem = $this->createMock(FilesystemOperator::class);
+        $filesystem
+            ->expects($this->never())
+            ->method('read');
+
+        $loader = new HotelLoader(new ArrayAdapter(), $filesystem);
+        $travel = new Travel();
+        $travel->hotelId = null;
+        $travel->hotel = null;
+
+        $loader->patchHotelDetails($travel);
+
+        $this->assertNull($travel->hotel);
+    }
+}

tests/BusProNet/XmlParser/TravelParserTest.php

@@ -184,6 +184,49 @@ class TravelParserTest extends TestCase
         $this->assertTrue($additionalServices[183660]->autoBook);
     }
 
+    public function testParseTravelWithoutHotelNode(): void
+    {
+        $xmlContent = '<?xml version="1.0" encoding="utf-8"?>
+<reisen>
+    <reise id="1" idbuspro="2293" code="">
+        <termin id="1" idbuspro="12162" idprodukt="2293" termin="28.03.2026" bis="04.04.2026" code="PGTSGI280326" reiseart="P">
+            <text>PG TSG Irlich</text>
+            <abpreis>-50,00</abpreis>
+            <lei_sonstiges>
+                <leistung id="1" idbuspro="188858" unterart="SON" termin="28.03.2026" bis="04.04.2026" automatisch_buchen="False" pflicht="False">
+                    <text>7 Übernachtungen im 3* Posthotel</text>
+                    <preis>999,00</preis>
+                    <status>Frei</status>
+                </leistung>
+            </lei_sonstiges>
+            <lei_befoerderung>
+                <leistung id="1" idbuspro="188850" unterart="BUS" termin="27.03.2026" bis="28.03.2026" automatisch_buchen="False" pflicht="False">
+                    <text>Bus-Hinfahrt</text>
+                    <preis>5,00</preis>
+                    <status>Frei</status>
+                    <richtung>HIN</richtung>
+                </leistung>
+            </lei_befoerderung>
+            <zustiege>
+                <zustieg id="1" idbuspro="873" zeit="27.03.2026 21:30:00" />
+            </zustiege>
+        </termin>
+    </reise>
+</reisen>';
+
+        $crawler = new Crawler($xmlContent);
+        $travelNode = $crawler->filterXPath('//reise/termin')->first();
+        $travel = $this->parser->parse($travelNode);
+
+        $this->assertSame(12162, $travel->id);
+        $this->assertSame('PGTSGI280326', $travel->code);
+        $this->assertNull($travel->hotelId);
+        $this->assertSame([], $travel->rooms);
+        $this->assertArrayHasKey(188858, $travel->additionalServices);
+        $this->assertArrayHasKey(188850, $travel->transportationServices);
+        $this->assertArrayHasKey(873, $travel->pickups);
+    }
+
     public function testParseAdditionalServicesUsesTerminLevelOnly(): void
     {
         $xmlContent = '<?xml version="1.0" encoding="utf-8"?>