🎨 add disqus support

layouts/_default/single.html

@@ -18,6 +18,25 @@
     </ul>
     {{ end }}
   </footer>
-  <!-- Comments system area -->
+  <!-- Comments system area start -->
+  {{ if not (eq .Params.comments false) }}
+  {{ if .Site.DisqusShortname }}
+  <div id="disqus_thread"></div>
+  <script>
+    var disqus_shortname = '{{ .Site.DisqusShortname }}';
+    (function() { // DON'T EDIT BELOW THIS LINE
+      var d = document, s = d.createElement('script');
+      s.src = 'https://' + disqus_shortname + '.disqus.com/embed.js';
+      s.setAttribute('data-timestamp', +new Date());
+      (d.head || d.body).appendChild(s);
+    })();
+  </script>
+  <noscript>
+    Please enable JavaScript to view the
+    <a href="https://disqus.com/?ref_noscript">comments powered by Disqus.</a>
+  </noscript>
+  <!-- Comments system area end -->
+  {{ end }}
+  {{ end }}
 </article>
 {{ partial "footer.html" . }}