From 63de9a947693334c409ba381d3bb0da3b0ce321a Mon Sep 17 00:00:00 2001
From: Florian Weber <f.weber@solarlux.com>
Date: Thu, 20 Mar 2025 11:30:27 +0100
Subject: [PATCH] Add sitemap support and enhance service worker caching
 strategy

---
 assets/js/service-worker.js.html | 38 ++++++++++++++++++++++++++++----
 sitemap.json.html                | 11 +++++++++
 2 files changed, 45 insertions(+), 4 deletions(-)
 create mode 100644 sitemap.json.html

diff --git a/assets/js/service-worker.js.html b/assets/js/service-worker.js.html
index b184f64..f855d1f 100644
--- a/assets/js/service-worker.js.html
+++ b/assets/js/service-worker.js.html
@@ -5,6 +5,7 @@ permalink: /assets/js/service-worker.js
 const CACHE_NAME = "cyberpunk-cache-v1";
 const OFFLINE_URL = "/offline.html"; // Diese Seite wird angezeigt, wenn offline
 const BASE_PATH = "{{ "/" | relative_url }}";
+const SITEMAP_URL = BASE_PATH + "sitemap.json";
 
 const urlsToCache = [
   BASE_PATH,
@@ -34,7 +35,9 @@ const urlsToCache = [
   BASE_PATH + "/assets/game-data/characters/carver.json",
 ];
 
-// Installations-Event: Dateien werden in den Cache geladen
+/**
+ * Install-Event: Cache Standarddateien
+ */
 self.addEventListener("install", (event) => {
   event.waitUntil(
     caches.open(CACHE_NAME).then((cache) => {
@@ -43,18 +46,45 @@ self.addEventListener("install", (event) => {
   );
 });
 
-// Fetch-Event: Prüft, ob eine Datei im Cache ist, bevor sie aus dem Netz geladen wird
+/**
+ * Fetch-Event: Cache-First Strategie mit Offline-Fallback
+ */
 self.addEventListener("fetch", (event) => {
   event.respondWith(
     caches.match(event.request).then((response) => {
       return response || fetch(event.request).catch(() => {
-        return caches.match(OFFLINE_URL); // Falls offline, lade offline.html
+        return caches.match(OFFLINE_URL);
       });
     })
   );
 });
 
-// Aktivierungs-Event: Löscht alten Cache, wenn sich Dateien geändert haben
+/**
+ * Wenn die Startseite geladen wird, lade automatisch alle Seiten aus der Sitemap in den Cache
+ */
+self.addEventListener("sync", (event) => {
+  if (event.tag === "cache-all-pages") {
+    event.waitUntil(
+      fetch(SITEMAP_URL)
+        .then((response) => response.json())
+        .then((data) => {
+          return caches.open(CACHE_NAME).then((cache) => {
+            return Promise.all(
+              data.pages.map((page) => {
+                return fetch(page.url)
+                  .then((response) => cache.put(page.url, response))
+                  .catch((err) => console.error("Fehler beim Cachen:", err));
+              })
+            );
+          });
+        })
+    );
+  }
+});
+
+/**
+ * Aktivierungs-Event: Löscht alten Cache
+ */
 self.addEventListener("activate", (event) => {
   event.waitUntil(
     caches.keys().then((cacheNames) => {
diff --git a/sitemap.json.html b/sitemap.json.html
new file mode 100644
index 0000000..6e2a162
--- /dev/null
+++ b/sitemap.json.html
@@ -0,0 +1,11 @@
+---
+permalink: /sitemap.json
+---
+
+{
+  "pages": [
+    {% for page in site.pages %}
+      { "url": "{{ page.url | relative_url }}" }{% unless forloop.last %},{% endunless %}
+    {% endfor %}
+  ]
+}