Group search by sections

assets/js/search.js

@@ -6,6 +6,11 @@
 (function() {
   const input = document.querySelector('#gdoc-search-input');
   const results = document.querySelector('#gdoc-search-results');
+  let showParent = false
+
+  {{ if .Site.Params.GeekdocSearchShowParent  }}
+    showParent = true
+  {{ end }}
 
   input.addEventListener('focus', init);
   input.addEventListener('keyup', search);
@@ -19,6 +24,7 @@
       input.required = false;
       search();
     });
+    loadScript('{{ index .Site.Data.assets "js/groupBy.min.js" | relURL }}');
   }
 
   function search() {
@@ -32,31 +38,68 @@
       return;
     }
 
-    const searchHits = window.geekdocSearchIndex.search(input.value, 10);
+    let searchHits = window.geekdocSearchIndex.search(input.value, 10);
 
     console.log(searchHits.length);
-    if (searchHits.length > 0) {
-      results.classList.add("has-hits");
-    } else {
-      results.classList.remove("has-hits");
+    if (searchHits.length < 1) {
+      return results.classList.remove("has-hits");
     }
 
-    searchHits.forEach(function(page) {
-      const li = document.createElement('li'),
-            a = li.appendChild(document.createElement('a'));
+    results.classList.add("has-hits");
+    
+    if (showParent) {
+      searchHits = groupBy(searchHits, hit => hit.parent);
+    }
+
+    const items = [];
+
+    if (showParent) {
+      for (const section in searchHits) {
+        const item = document.createElement('li'),
+              title = item.appendChild(document.createElement('span')),
+              subList = item.appendChild(document.createElement('ul'));
+
+        title.textContent = section;
+        title.classList.add('gdoc-search__list__section-title');
+        createLinks(searchHits[section], subList);
+
+        items.push(item);
+      }
+    } else {
+      items.push(...createLinks(searchHits));
+    }
+
+    items.forEach(item => {
+      results.appendChild(item);
+    })
+    results.classList.add('DUMMY');
+  }
+
+  /**
+   * Creates links to given pages and either returns them in an array or attaches them to a target element
+   * @param {Object} pages Page to which the link should point to
+   * @param {HTMLElement} target Element to which the links should be attatched
+   * @returns {Array} If target is not specified, returns an array of built links
+   */
+  function createLinks(pages, target) {
+    const items = [];
+
+    for (const page of pages) {
+      const item = document.createElement('li'),
+            a = item.appendChild(document.createElement('a'));
 
       a.href = page.href;
-
-      {{ if .Site.Params.GeekdocSearchShowParent }}
-      a.textContent = page.parent ? page.parent + ' / ' + page.title : page.title;
-      {{ else }}
       a.textContent = page.title;
-      {{ end }}
 
-      results.appendChild(li);
-      results.classList.add("DUMMY");
-    });
+      if (target) {
+        target.appendChild(item);
+        continue
+      }
 
+      items.push(item);
+    }
+
+    return items;
   }
 
   function loadScript(src, callback) {