Attempt at offline posts page

content/offline.md

@@ -9,3 +9,78 @@ Your device is offline. You may have some pages cached for offline viewing,
 otherwise please wait for the internet to reconnect to continue browsing.
 
 [Homepage](/)
+
+{{< unsafe >}}
+
+<ul id='offline-posts'></ul>
+
+<script>
+
+function daysAgo(date) {
+  date.setHours(0, 0, 0, 0);
+  const time = date.getTime();
+  const now = today.getTime();
+  const delta = ((now - time) / 1000 / 60 / 60 / 24) | 0;
+
+  if (delta < 1) {
+    return 'today';
+  }
+
+  if (delta === 1) {
+    return 'yesterday';
+  }
+
+  return `${delta | 0} days ago`;
+}
+
+async function listPages() {
+  // Get a list of all of the caches for this origin
+  const cacheNames = await caches.keys();
+  const result = [];
+
+  for (const name of cacheNames) {
+    // Open the cache
+    if (name.includes('/blog')) {
+      const cache = await caches.open(name);
+
+      // Get a list of entries. Each item is a Request object
+      for (const request of await cache.keys()) {
+        const url = request.url;
+        const post = await cache.match(request);
+        const body = await post.text();
+        const title = body.match(/<title>(.*)<\/title>/)[1];
+        result.push({
+          url,
+          post,
+          title,
+          visited: new Date(post.headers.get('date')),
+        });
+        }
+      }
+  }
+  
+
+  const el = document.querySelector('#offline-posts');
+
+  if (result.length) {
+    el.innerHTML = result
+      .sort((a, b) => {
+        return a.published.toJSON() < b.published.toJSON() ? 1 : -1;
+      })
+      .map((res) => {
+        let html = `<li>
+        <a href="${res.url}">${res.title}</a>
+        <small><span title="${res.visited.toString()}">
+            (visited ${daysAgo(res.visited)})
+        </span></small>
+        </li>`;
+        return html;
+      })
+      .join('\n');
+  }
+
+  return result;
+}
+</script>
+
+{{< /unsafe >}}