New theme blowfish

layouts/shortcodes/random-image.html

@@ -0,0 +1,20 @@
+<img id="random-image" alt="Random image" />
+
+<script>
+const images = [
+  {{- $files := readDir "static/img/calvin_hobbes" -}}
+  {{- range $i, $f := $files -}}
+    {{- if not $f.IsDir -}}
+      "{{ printf "/img/calvin_hobbes/%s" $f.Name }}",
+    {{- end -}}
+  {{- end -}}
+];
+
+(function(){
+  if(images.length === 0) return;
+  var img = document.getElementById("random-image");
+  if(!img) return;
+  var rand = images[Math.floor(Math.random() * images.length)];
+  img.src = rand;
+})();
+</script>