1 files changed, 156 insertions, 0 deletions
diff --git a/assets/js/app.js b/assets/js/app.js
index 0f89b97..4db9115 100644
--- a/assets/js/app.js
+++ b/assets/js/app.js
@@ -1,8 +1,164 @@
+/* global FlexSearch docs:true a:true t:true d:true */
+
 document.getElementById('mode').addEventListener('click', () => {
+
   document.body.classList.toggle('dark');
   localStorage.setItem('theme', document.body.classList.contains('dark') ? 'dark' : 'light');
+
 });
 
 if (localStorage.getItem('theme') === 'dark') {
+
   document.body.classList.add('dark');
+
+}
+
+/* eslint-disable */
+/*
+window.plausible = window.plausible || function() { (window.plausible.q = window.plausible.q || []).push(arguments) }
+
+if (document.querySelector('#deploy-to-netlify') !== null) {
+
+  document.getElementById('deploy-to-netlify').addEventListener('click', function(){
+    plausible('Deploy to Netlify');
+  });
+
 }
+*/
+/* eslint-enable */
+
+var suggestions = document.getElementById('suggestions');
+var userinput = document.getElementById('userinput');
+
+document.addEventListener('keydown', inputFocus);
+
+function inputFocus(e) {
+
+  if (e.keyCode === 191 ) {
+    e.preventDefault();
+    userinput.focus();
+  }
+
+  if (e.keyCode === 27 ) {
+    userinput.blur();
+    suggestions.classList.add('d-none');
+  }
+
+}
+
+document.addEventListener('click', function(event) {
+
+  var isClickInsideElement = suggestions.contains(event.target);
+
+  if (!isClickInsideElement) {
+    suggestions.classList.add('d-none');
+  }
+
+});
+
+
+/*
+Source: 
+  - https://dev.to/shubhamprakash/trap-focus-using-javascript-6a3
+*/
+
+document.addEventListener('keydown',suggestionFocus);
+
+function suggestionFocus(e){
+
+  const focusableSuggestions= suggestions.querySelectorAll('a');
+  const focusable= [...focusableSuggestions]; 
+  const index = focusable.indexOf(document.activeElement); 
+
+  let nextIndex = 0;
+
+  if (e.keyCode === 38) {
+    e.preventDefault();
+    nextIndex= index > 0 ? index-1 : 0;
+    focusableSuggestions[nextIndex].focus();
+  }
+  else if (e.keyCode === 40) {
+    e.preventDefault();
+    nextIndex= index+1 < focusable.length ? index+1 : index;
+    focusableSuggestions[nextIndex].focus();
+  }
+
+}
+
+
+/* 
+Source: 
+  - https://github.com/nextapps-de/flexsearch#index-documents-field-search
+  - https://raw.githack.com/nextapps-de/flexsearch/master/demo/autocomplete.html
+*/
+
+(function(){
+
+  var index = new FlexSearch({
+    preset: 'score',
+    cache: true,
+    doc: {
+        id: 'id',
+        field: [
+          'title',
+          'description',
+          'content',            
+        ],
+        store: [
+          'href',
+          'title',
+          'description',
+        ],
+    },
+  });
+
+  index.add(docs);
+
+  userinput.addEventListener('input', show_results, true);
+  suggestions.addEventListener('click', accept_suggestion, true);
+
+  function show_results(){
+
+    var value = this.value;
+    var results = index.search(value, 5);
+    var entry, childs = suggestions.childNodes;
+    var i = 0, len = results.length;
+
+    suggestions.classList.remove('d-none');
+
+    results.forEach(function(page) {
+      
+      entry = document.createElement('div');
+      
+      entry.innerHTML = '<a href><span></span><span></span></a>';
+
+      a = entry.querySelector('a'),
+      t = entry.querySelector('span:first-child'),
+      d = entry.querySelector('span:nth-child(2)');
+
+      a.href = page.href;
+      t.textContent = page.title;
+      d.textContent = page.description;
+
+      suggestions.appendChild(entry);
+
+    });
+
+    while(childs.length > len){
+
+        suggestions.removeChild(childs[i])
+    }
+
+  }
+
+  function accept_suggestion(){
+
+      while(suggestions.lastChild){
+
+          suggestions.removeChild(suggestions.lastChild);
+      }
+
+      return false;
+  }
+
+}());