sort icons by how much they are used, #3784

src/routes/api/other.js

@@ -0,0 +1,29 @@
+const becca = require("../../becca/becca");
+
+function getIconUsage() {
+    const iconClassToCountMap = {};
+
+    for (const {value: iconClass, noteId} of becca.findAttributes('label', 'iconClass')) {
+        if (noteId.startsWith("_")) {
+            continue; // ignore icons of "system" notes since they were not set by the user
+        }
+
+        if (!iconClass?.trim()) {
+            continue;
+        }
+
+        for (const clazz of iconClass.trim().split(/\s+/)) {
+            if (clazz === 'bx') {
+                continue;
+            }
+
+            iconClassToCountMap[clazz] = (iconClassToCountMap[clazz] || 0) + 1;
+        }
+    }
+
+    return { iconClassToCountMap };
+}
+
+module.exports = {
+    getIconUsage
+};