add(miniflux): custom js for feed count sort controls

miniflux_scripts/feed_count_sort_controls.js

@@ -0,0 +1,32 @@
+// feed count sort controls
+(function() {
+  'use strict';
+  if (!window.location.href.match(/\/feeds$/)) return;
+  function parseTotal(feed) {
+    const spans = feed.querySelectorAll('.feed-entries-counter span[aria-hidden="true"]');
+    return spans[3] ? parseInt(spans[3].textContent, 10) : 0;
+  }
+  function sortFeeds(desc) {
+    const feeds = Array.from(document.querySelectorAll('article.item.feed-item'));
+    if (!feeds.length) return;
+    const parent = feeds[0].parentNode;
+    feeds
+      .sort((a, b) => desc
+        ? parseTotal(b) - parseTotal(a)
+        : parseTotal(a) - parseTotal(b)
+      )
+      .forEach(f => parent.appendChild(f));
+  }
+  const navList = document.querySelector('nav[aria-label="Feeds Menu"] ul');
+  if (!navList) return;
+  ['↑', '↓'].forEach((arrow, idx) => {
+    const li = document.createElement('li');
+    const btn = document.createElement('button');
+    btn.className = 'page-link';
+    btn.type = 'button';
+    btn.textContent = `Entries ${arrow}`;
+    btn.onclick = () => sortFeeds(idx === 1);
+    li.appendChild(btn);
+    navList.appendChild(li);
+  });
+})();