From 9f8ac77af6d644ca75ebcfce13b20b93e5126123 Mon Sep 17 00:00:00 2001
From: Lukas Hirt <lukashirt@mail.com>
Date: Sun, 20 Dec 2020 20:09:49 +0100
Subject: [PATCH] Group search by sections

---
 assets/js/groupBy.min.js |  9 +++++
 assets/js/search.js      | 75 +++++++++++++++++++++++++++++++---------
 src/sass/_base.scss      | 38 ++++++++++++++++----
 3 files changed, 99 insertions(+), 23 deletions(-)
 create mode 100644 assets/js/groupBy.min.js

diff --git a/assets/js/groupBy.min.js b/assets/js/groupBy.min.js
new file mode 100644
index 0000000..808a440
--- /dev/null
+++ b/assets/js/groupBy.min.js
@@ -0,0 +1,9 @@
+/**
+ * Part of [Canivete](http://canivete.leofavre.com/#deepgroupby)
+ * 
+ * Groups the contents of an array by one or more iteratees.
+ * Unlike Lodash [`groupBy()`](https://lodash.com/docs/4.17.4#groupBy),
+ * this function can create nested groups, but cannot receive
+ * strings for iteratees.
+ */
+const groupBy=(e,...t)=>{let r=e.map(e=>t.map(t=>t(e))),a={};return r.forEach((t,r)=>{let l=(_simpleAt(a,t)||[]).concat([e[r]]);_simpleSet(a,t,l)}),a},_isPlainObject=e=>null!=e&&"object"==typeof e&&e.constructor==Object,_parsePath=e=>Array.isArray(e)?e:`${e}`.split("."),_simpleAt=(e,t)=>_parsePath(t).reduce((e,t)=>null!=e&&e.hasOwnProperty(t)?e[t]:void 0,e),_simpleSet=(e,t,r)=>_parsePath(t).reduce((e,t,a,l)=>{let s=a===l.length-1;return e.hasOwnProperty(t)&&(s||_isPlainObject(e[t]))||(e[t]={}),s?e[t]=r:e[t]},e);
\ No newline at end of file
diff --git a/assets/js/search.js b/assets/js/search.js
index afd434d..4a62773 100644
--- a/assets/js/search.js
+++ b/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) {
diff --git a/src/sass/_base.scss b/src/sass/_base.scss
index f50e252..51f15b9 100644
--- a/src/sass/_base.scss
+++ b/src/sass/_base.scss
@@ -398,10 +398,6 @@ img {
     height: $font-size-16;
   }
 
-  .has-hits {
-    border-bottom: 1px dashed $gray-600;
-  }
-
   &::after {
     display: block;
     content: "";
@@ -441,22 +437,50 @@ img {
   }
 
   &__list {
-    padding-left: 1em;
+    display: none;
+    background-color: #ffffff;
+    border-radius: $border-radius;
+    box-shadow: 0 1px 3px 0 rgba(0,0,0,0.1),0 1px 2px 0 rgba(0,0,0,0.06);
+    position: absolute;
     margin: 0;
-    padding: $padding-8 0;
+    padding: $padding-8;
     list-style: none;
+    left: 0;
+    top: calc(100% + #{$padding-8});
+    width: 100%;
+    z-index: 2;
 
     ul {
-      padding-left: $padding-16;
+      list-style: none;
+      margin-top: $padding-8;
+      padding-left: 0;
     }
 
     li {
       margin: $padding-4 0;
     }
 
+    > li > span {
+      color: $gray-600;
+      font-size: $font-size-14;
+      font-weight: bold;
+    }
+
+    > li + li {
+      margin-top: $padding-16;
+    }
+
     .icon {
       margin-right: $padding-4;
     }
+
+    a {
+      font-size: $font-size-16;
+    }
+  }
+
+  &:focus-within &__list.has-hits {
+    display: block !important;
   }
 }