fix storage of routes

public/js/privacy-storage.js

@@ -19,6 +19,16 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     return Date.now();
   }
 
+  function parseTimestamp(value, fallback = 0) {
+    if (value === null || value === undefined || value === '') return fallback;
+
+    const numeric = Number(value);
+    if (Number.isFinite(numeric) && numeric > 0) return numeric;
+
+    const parsed = Date.parse(String(value));
+    return Number.isFinite(parsed) && parsed > 0 ? parsed : fallback;
+  }
+
   function readJson(key, fallback) {
     const store = storage();
     if (!store) return fallback;
@@ -61,7 +71,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     return {
       progressStorage: value?.progressStorage === true,
       cookies: false,
-      updatedAt: Number(value?.updatedAt) || now()
+      updatedAt: parseTimestamp(value?.updatedAt, now())
     };
   }
 
@@ -101,25 +111,24 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
   }
 
   function isRouteStateObject(value) {
-    return value && typeof value === 'object' && (
+    return Boolean(value && typeof value === 'object' && (
       Object.hasOwn(value, 'routeId')
       || Object.hasOwn(value, 'routeState')
       || Object.hasOwn(value, 'routeProgressIndex')
       || Object.hasOwn(value, 'visitedPoiIds')
       || Object.hasOwn(value, 'viewedPoiIds')
       || Object.hasOwn(value, 'playedAudioPoiIds')
-    );
+    ));
   }
 
   function progressEnvelope(value) {
     if (!value || typeof value !== 'object') return {};
     if (value.routes && typeof value.routes === 'object') return value.routes;
-    if (isRouteStateObject(value)) {
+    if (!isRouteStateObject(value)) return value;
+
     const id = routeId(value);
     return id ? { [id]: value } : {};
   }
-    return value;
-  }
 
   function readProgressStore() {
     return progressEnvelope(readJson(PROGRESS_KEY, {}));
@@ -133,8 +142,8 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     });
   }
 
-  function stateTimestamp(value) {
-    return Number(value?.updatedAt) || Number(value?.savedAt) || now();
+  function normalizeRouteTimestamp(value) {
+    return parseTimestamp(value?.updatedAt, parseTimestamp(value?.savedAt, 0));
   }
 
   function normalizeRouteState(value, fallbackRouteId = null) {
@@ -143,6 +152,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     const id = value.routeId === null || value.routeId === undefined
       ? fallbackRouteId
       : value.routeId;
+    const timestamp = normalizeRouteTimestamp(value) || now();
 
     return {
       routeId: id === null || id === undefined ? null : String(id),
@@ -152,8 +162,8 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
       visitedPoiIds: numericIdSet(value.visitedPoiIds),
       viewedPoiIds: numericIdSet(value.viewedPoiIds),
       playedAudioPoiIds: numericIdSet(value.playedAudioPoiIds),
-      savedAt: Number(value.savedAt) || Number(value.updatedAt) || now(),
-      updatedAt: stateTimestamp(value)
+      savedAt: parseTimestamp(value.savedAt, timestamp),
+      updatedAt: timestamp
     };
   }
 
@@ -178,13 +188,8 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
   }
 
   function isExpired(value, referenceTime = now()) {
-    const timestamp = Number(value?.updatedAt) || Number(value?.savedAt) || now();
-    return referenceTime - timestamp > MAX_PROGRESS_AGE_MS;
-  }
-
-  function reportCleanupProgress(callback, processed, total, removed) {
-    if (typeof callback !== 'function') return;
-    callback({ processed, total, removed });
+    const timestamp = normalizeRouteTimestamp(value);
+    return timestamp > 0 && referenceTime - timestamp > MAX_PROGRESS_AGE_MS;
   }
 
   function updateRouteState(route, updater) {
@@ -246,37 +251,58 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     return writeProgressStore(routes);
   }
 
+  function normalizedEntries(routes) {
+    return Object.entries(routes)
+      .map(([id, value]) => [id, normalizeRouteState(value, id)])
+      .filter(([, value]) => value !== null);
+  }
+
+  function reportCleanupProgress(callback, removed, total) {
+    if (typeof callback !== 'function') return;
+    callback(removed, total);
+  }
+
   function cleanupExpired(progressCallback) {
     const referenceTime = now();
-    const routes = readProgressStore();
-    const entries = Object.entries(routes);
+    const entries = normalizedEntries(readProgressStore());
+    const total = entries.filter(([, value]) => isExpired(value, referenceTime)).length;
     const kept = {};
     let removed = 0;
 
-    entries.forEach(([id, value], index) => {
-      const normalized = normalizeRouteState(value, id);
-      if (normalized && !isExpired(normalized, referenceTime)) kept[id] = normalized;
-      else removed += 1;
-      reportCleanupProgress(progressCallback, index + 1, entries.length, removed);
+    entries.forEach(([id, value]) => {
+      reportCleanupProgress(progressCallback, removed, total);
+      if (isExpired(value, referenceTime)) {
+        removed += 1;
+        return;
+      }
+      kept[id] = value;
     });
 
     if (removed > 0) writeProgressStore(kept);
-    return { removed, total: entries.length, routes: kept };
+    return { removed, total, routes: kept };
   }
 
   async function cleanupExpiredProgress(progressCallback) {
     return cleanupExpired(progressCallback);
   }
 
+  function loadRoute(route) {
+    if (!isProgressStorageEnabled()) return null;
+
+    const id = routeId(route);
+    if (!id) return null;
+
+    const saved = normalizeRouteState(readProgressStore()[id], id);
+    return saved && !isExpired(saved) ? saved : null;
+  }
+
   function activateRoute(route) {
     if (!isProgressStorageEnabled()) return null;
 
     const id = routeId(route);
     if (!id) return null;
 
-    const routes = cleanupExpired().routes;
-    const saved = normalizeRouteState(routes[id], id);
-    return saved && !isExpired(saved) ? saved : null;
+    return loadRoute(route);
   }
 
   ns.PrivacyStorage = Object.freeze({
@@ -290,6 +316,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     cookiesEnabled: () => false,
     getPrivacySettings: readSettings,
     isProgressStorageEnabled,
+    loadRoute,
     markAudioPlayed,
     markPlayed: markAudioPlayed,
     markPlayedAudio: markAudioPlayed,