FEATURE: Tags display on knowledge explorer

assets/javascripts/discourse/components/knowledge-explorer-tag.js.es6

@@ -0,0 +1,13 @@
+import computed from "ember-addons/ember-computed-decorators";
+import DiscourseURL from "discourse/lib/url";
+
+export default Ember.Component.extend({
+  @computed("category", "tag")
+  href(category, tag) {
+    return "/knowledge-explorer";
+  },
+
+  click() {
+    DiscourseURL.routeTo(this.href, { replaceURL: true });
+  }
+});

assets/javascripts/discourse/components/knowledge-explorer-tags.js.es6

@@ -0,0 +1,23 @@
+import computed from "ember-addons/ember-computed-decorators";
+import { on, observes } from "ember-addons/ember-computed-decorators";
+import { ajax } from "discourse/lib/ajax";
+
+function sortAlpha(a, b) {
+  let aName = a.id.toLowerCase();
+  let bName = b.id.toLowerCase();
+  return aName < bName ? -1 : aName > bName ? 1 : 0;
+}
+
+function sortCount(a, b) {
+  let aCount = a.count;
+  let bCount = b.count;
+
+  return bCount - aCount || a.id.localeCompare(b.id);
+}
+
+let cachedResults = null;
+let lastFetchDate = null;
+
+export default Ember.Component.extend({
+  classNames: "knowledge-explorer-tags"
+});

assets/javascripts/discourse/templates/components/knowledge-explorer-tag.hbs

@@ -0,0 +1,9 @@
+<div class="knowledge-explorer-tag {{if tag.active 'selected'}} {{if subtag 'subtag'}}">
+  {{#unless tag.active}}
+    {{d-icon "plus"}}
+  {{/unless}}
+  {{tag.id}} <span class="tag-count">({{tag.count}})</span>
+  {{#if tag.active}}
+    {{d-icon "times-circle"}}
+  {{/if}}
+</div>

assets/javascripts/discourse/templates/components/knowledge-explorer-tags.hbs

@@ -0,0 +1,11 @@
+{{#each model.tags as |tag|}}
+    {{knowledge-explorer-tag tag=tag}}
+{{/each}}
+
+{{#if subtags}}
+   {{#each subtags as |tag|}}
+     {{knowledge-explorer-tag
+       tag=tag
+       subtag=true}}
+   {{/each}}
+{{/if}}

assets/javascripts/discourse/templates/knowledge-explorer.hbs

@@ -1,3 +1,6 @@
 <div class="knowledge-explorer">
+  {{knowledge-explorer-tags
+      model=model
+      searchResults=searchResults}}
   {{knowledge-explorer-topic-list model=model}}
 </div>