fix sonarqube issues

public/js/local-routes.js

@@ -34,9 +34,32 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     storage().setItem(INDEX_KEY, JSON.stringify([...new Set(ids.map(String))]));
   }
 
+  function uuidFromRandomValues(cryptoApi) {
+    const bytes = new Uint8Array(16);
+    cryptoApi.getRandomValues(bytes);
+
+    bytes[6] = (bytes[6] & 0x0f) | 0x40;
+    bytes[8] = (bytes[8] & 0x3f) | 0x80;
+
+    const hex = Array.from(bytes, byte => byte.toString(16).padStart(2, '0'));
+    return [
+      hex.slice(0, 4).join(''),
+      hex.slice(4, 6).join(''),
+      hex.slice(6, 8).join(''),
+      hex.slice(8, 10).join(''),
+      hex.slice(10, 16).join('')
+    ].join('-');
+  }
+
   function createRouteId() {
-    if (globalThis.crypto?.randomUUID) return `local-${globalThis.crypto.randomUUID()}`;
-    return `local-${Date.now()}-${Math.random().toString(36).slice(2, 10)}`;
+    const cryptoApi = globalThis.crypto;
+    if (typeof cryptoApi?.randomUUID === 'function') {
+      return `local-${cryptoApi.randomUUID()}`;
+    }
+    if (typeof cryptoApi?.getRandomValues === 'function') {
+      return `local-${uuidFromRandomValues(cryptoApi)}`;
+    }
+    throw new Error('Keine sichere Zufallsquelle für eine lokale Strecken-ID verfügbar.');
   }
 
   function createPoiId() {
@@ -138,13 +161,14 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
 
     const orderedPois = [...(pois || [])].sort((left, right) => Number(left.sequence) - Number(right.sequence));
     orderedPois.forEach((poi, index) => {
+      const title = poi.title || `Station ${index + 1}`;
       if (!Number.isFinite(Number(poi.lat)) || !Number.isFinite(Number(poi.lon))) {
-        throw new Error(`Für ${poi.title || `Station ${index + 1}`} fehlen gültige Koordinaten.`);
+        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', poi.title || `Station ${index + 1}`));
+      waypoint.appendChild(createElement(document, 'name', title));
       if (poi.description) waypoint.appendChild(createElement(document, 'desc', poi.description));
       const extensions = createElement(document, 'extensions');
       const poiId = document.createElementNS(POI_NAMESPACE, 'wegwichtel:poiId');
@@ -154,7 +178,8 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
       const routeOrTrack = directChildrenByLocalName(root, 'rte')[0]
         || directChildrenByLocalName(root, 'trk')[0]
         || null;
-      root.insertBefore(waypoint, routeOrTrack);
+      if (routeOrTrack) routeOrTrack.before(waypoint);
+      else root.appendChild(waypoint);
     });
 
     return new XMLSerializer().serializeToString(document);
@@ -375,25 +400,28 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
 
   function readFileAsText(file) {
     if (!file) return Promise.resolve('');
-    if (typeof file.text === 'function') return file.text();
-    return new Promise((resolve, reject) => {
-      const reader = new FileReader();
-      reader.addEventListener('load', () => resolve(String(reader.result || '')), { once: true });
-      reader.addEventListener('error', () => reject(reader.error || new Error('Datei konnte nicht gelesen werden.')), { once: true });
-      reader.readAsText(file);
-    });
+    if (typeof file.text !== 'function') {
+      return Promise.reject(new TypeError('Die ausgewählte Datei unterstützt Blob.text() nicht.'));
+    }
+    return file.text();
   }
 
   function fileToDataUrl(file) {
     if (!file) return Promise.resolve(null);
     return new Promise((resolve, reject) => {
       const reader = new FileReader();
-      reader.addEventListener('load', () => resolve({
-        dataUrl: String(reader.result || ''),
-        name: file.name || 'Datei',
-        size: Number(file.size) || 0,
-        type: file.type || 'application/octet-stream'
-      }), { once: true });
+      reader.addEventListener('load', () => {
+        if (typeof reader.result !== 'string') {
+          reject(new TypeError('Die Datei konnte nicht als Data-URL gelesen werden.'));
+          return;
+        }
+        resolve({
+          dataUrl: reader.result,
+          name: file.name || 'Datei',
+          size: Number(file.size) || 0,
+          type: file.type || 'application/octet-stream'
+        });
+      }, { once: true });
       reader.addEventListener('error', () => reject(reader.error || new Error('Datei konnte nicht gelesen werden.')), { once: true });
       reader.readAsDataURL(file);
     });