change trackpoint format to match server expectation

public/js/local-routes.js

@@ -153,33 +153,64 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     nameElement.textContent = name;
   }
 
-  function syncGpx(gpx, route, pois) {
-    const document = parseXml(gpx || emptyGpx(route?.name));
+  function ensureTrackSegment(document, routeName) {
     const root = document.documentElement;
-    updateMetadataName(document, route?.name || 'Neue Strecke');
-    Array.from(document.getElementsByTagNameNS('*', 'wpt')).forEach(node => node.remove());
+    let track = directChildrenByLocalName(root, 'trk')[0];
+    if (!track) {
+      track = createElement(document, 'trk');
+      root.appendChild(track);
+    }
 
+    let trackName = directChildrenByLocalName(track, 'name')[0];
+    if (!trackName) {
+      trackName = createElement(document, 'name');
+      track.insertBefore(trackName, track.firstChild);
+    }
+    trackName.textContent = routeName;
+
+    let segment = directChildrenByLocalName(track, 'trkseg')[0];
+    if (!segment) {
+      segment = createElement(document, 'trkseg');
+      track.appendChild(segment);
+    }
+    return segment;
+  }
+
+  function isManagedTrackPoint(node) {
+    return Boolean(firstDescendantByLocalName(node, 'poiId'));
+  }
+
+  function syncGpx(gpx, route, pois) {
+    const routeName = route?.name || 'Neue Strecke';
+    const document = parseXml(gpx || emptyGpx(routeName));
+    updateMetadataName(document, routeName);
+
+    // Wegwichtel verwaltet neue Streckenpunkte direkt als GPX-Trackpunkte.
+    // Fremde/importierte Trackpunkte ohne Wegwichtel-ID bleiben erhalten.
+    Array.from(document.getElementsByTagNameNS('*', 'wpt')).forEach(node => node.remove());
+    Array.from(document.getElementsByTagNameNS('*', 'trkpt'))
+      .filter(isManagedTrackPoint)
+      .forEach(node => node.remove());
+
+    const segment = ensureTrackSegment(document, routeName);
     const orderedPois = [...(pois || [])].sort((left, right) => Number(left.sequence) - Number(right.sequence));
     orderedPois.forEach((poi, index) => {
-      const title = poi.title || `Station ${index + 1}`;
+      const title = poi.title || `Trackpunkt ${index + 1}`;
       if (!Number.isFinite(Number(poi.lat)) || !Number.isFinite(Number(poi.lon))) {
         throw new TypeError(`Für ${title} fehlen gültige Koordinaten.`);
       }
-      const waypoint = createElement(document, 'wpt');
-      waypoint.setAttribute('lat', String(Number(poi.lat)));
-      waypoint.setAttribute('lon', String(Number(poi.lon)));
-      waypoint.appendChild(createElement(document, 'name', title));
-      if (poi.description) waypoint.appendChild(createElement(document, 'desc', poi.description));
+
+      const trackPoint = createElement(document, 'trkpt');
+      trackPoint.setAttribute('lat', String(Number(poi.lat)));
+      trackPoint.setAttribute('lon', String(Number(poi.lon)));
+      trackPoint.appendChild(createElement(document, 'name', title));
+      if (poi.description) trackPoint.appendChild(createElement(document, 'desc', poi.description));
       const extensions = createElement(document, 'extensions');
       const poiId = document.createElementNS(POI_NAMESPACE, 'wegwichtel:poiId');
       poiId.textContent = String(poi.id);
       extensions.appendChild(poiId);
-      waypoint.appendChild(extensions);
-      const routeOrTrack = directChildrenByLocalName(root, 'rte')[0]
-        || directChildrenByLocalName(root, 'trk')[0]
-        || null;
-      if (routeOrTrack) routeOrTrack.before(waypoint);
-      else root.appendChild(waypoint);
+      trackPoint.appendChild(extensions);
+      segment.appendChild(trackPoint);
     });
 
     return new XMLSerializer().serializeToString(document);
@@ -292,6 +323,14 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     }).filter(point => point.lat != null && point.lon != null);
   }
 
+  function gpxForUpload(routePackage) {
+    if (!routePackage?.gpx) throw new Error('Für die lokale Strecke ist keine GPX-Datei vorhanden.');
+    if (!routePoints(routePackage.gpx).length) {
+      throw new Error('Die lokale Strecke enthält noch keine GPX-Trackpunkte.');
+    }
+    return routePackage.gpx;
+  }
+
   function radians(value) {
     return value * (Math.PI / 180);
   }
@@ -437,6 +476,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     fileToDataUrl,
     get: readPackage,
     getAppRoute,
+    gpxForUpload,
     list: listPackages,
     listAppRoutes,
     parseWaypoints,