zdoc/layouts/partials/head/scripts.html

{{ if .Site.Params.custom_js }}
{{ range .Site.Params.custom_js }}
  {{ $custom_template := resources.Get . }}
  {{ if $custom_template }}
    {{ $custom_js := $custom_template | resources.Minify | resources.Fingerprint }}
    <script defer src="{{ $custom_js.RelPermalink }}"></script>
  {{ end }}
{{ end }}
{{ end }}

{{ if $.Param "enableSearch" }}
  {{ $fuse := resources.Get "js/fuse.min.js" | resources.Fingerprint }}
  <script defer src="{{ $fuse.RelPermalink }}"></script>
{{ end }}

{{ $enquire := resources.Get "js/enquire.min.js" | resources.Fingerprint }}
<script src="{{ $enquire.RelPermalink }}"></script>
{{ $lazysizes := resources.Get "js/lazysizes.min.js" | resources.Fingerprint }}
<script defer src="{{ $lazysizes.RelPermalink }}"></script>
{{ $getParents := resources.Get "js/helper/getParents.js" | resources.Minify | resources.Fingerprint }}
<script defer src="{{ $getParents.RelPermalink }}"></script>
{{ $fadeinout := resources.Get "js/helper/fadeinout.js" | resources.Minify | resources.Fingerprint }}
<script defer src="{{ $fadeinout.RelPermalink }}"></script>

<script>
  "use strict";

  window.onload = function() {
    {{ $languagedir := ($.Param "languagedir" | default "ltr") }}
    var languagedir = JSON.parse({{ $languagedir | jsonify }});
    {{ $baseurl := $.Site.BaseURL }}
    var baseurl = JSON.parse({{ $baseurl | jsonify }});
    {{ $permalink := .Permalink }}
    var permalink = JSON.parse({{ $permalink | jsonify }});

    // ==================== toc visibility ========================
    var toggleSidebarElem = document.getElementById("toggle-sidebar");
    var toggleMenuElem = document.getElementById("toggle-menu");
    var tocBodyElem = document.querySelector('.toc__body');
    var tocLabelElem = document.querySelector('.toc__label');
    var listMainElem = document.getElementById('list-main');
    var listSideElem = document.getElementById('list-side');
    var singleMenuElem = document.getElementById('single-menu');
    var sliderIcons = document.querySelectorAll('.slider__icon');

    toggleSidebarElem ?
      toggleSidebarElem.addEventListener('change', function (e) {
        if (e.target.checked) {
          if (tocBodyElem) {
            fadeIn(tocBodyElem, 200);
          }
          if (tocLabelElem) {
            fadeIn(tocLabelElem, 200);
          }
          if (listMainElem && listSideElem) {
            listMainElem.className = 'm';
            listSideElem.className = 'r';
          }

          sliderIcons && sliderIcons.forEach(function (elem) {
            if (elem.classList.contains('hide')) {
              elem.classList.remove('hide');
            } else {
              elem.classList.add('hide');
            }
          });

        } else {
          if (tocBodyElem) {
            fadeOut(tocBodyElem, 200);
          }
          if (tocLabelElem) {
            fadeOut(tocLabelElem, 200);
          }
          if (listMainElem && listSideElem) {
            listMainElem.className = 'mr';
            listSideElem.className = 'hide';
          }

          sliderIcons && sliderIcons.forEach(function (elem) {
            if (elem.classList.contains('hide')) {
              elem.classList.remove('hide');
            } else {
              elem.classList.add('hide');
            }
          });
        }
      }) : null;

    toggleMenuElem ?
      toggleMenuElem.addEventListener('change', function (e) {
        if (e.target.checked) {
          if (listMainElem && singleMenuElem) {
            listMainElem.className = 'm';
            singleMenuElem.className = 'l';
          }

          sliderIcons && sliderIcons.forEach(function (elem) {
            if (elem.classList.contains('hide')) {
              elem.classList.remove('hide');
            } else {
              elem.classList.add('hide');
            }
          });

        } else {
          if (listMainElem && singleMenuElem) {
            listMainElem.className = 'lm';
            singleMenuElem.className = 'hide';
          }

          sliderIcons && sliderIcons.forEach(function (elem) {
            if (elem.classList.contains('hide')) {
              elem.classList.remove('hide');
            } else {
              elem.classList.add('hide');
            }
          });
        }
      }) : null;
    // ============================================================


    // ===================== navbar collapse ======================
    var navCollapseBtn = document.getElementById('navCollapseBtn');
    navCollapseBtn ? navCollapseBtn.addEventListener('click', function(e) {
      var navCollapse = document.querySelector('.navbar__collapse');
      
      if (navCollapse) {
        var dataOpen = navCollapse.getAttribute('data-open');

        if (dataOpen === 'true') {
          navCollapse.setAttribute('data-open', 'false');
          navCollapse.style.maxHeight = 0;
        } else {
          navCollapse.setAttribute('data-open', 'true');
          navCollapse.style.maxHeight = navCollapse.scrollHeight + "px";
        }
      }
    }) : null;
    // ============================================================


    // ========================== expand ==========================
    var expandBtn = document.querySelectorAll('.expand__button');

    for (let i = 0; i < expandBtn.length; i++) {
      expandBtn[i].addEventListener("click", function () {
        var content = this.nextElementSibling;
        if (content.style.maxHeight) {
          content.style.maxHeight = null;
          this.querySelector('svg').classList.add('expand-icon__right');
          this.querySelector('svg').classList.remove('expand-icon__down');
        } else {
          content.style.maxHeight = content.scrollHeight + "px";
          this.querySelector('svg').classList.remove('expand-icon__right');
          this.querySelector('svg').classList.add('expand-icon__down');
        }
      });
    }
    // ============================================================



    // ============================ tab ============================
    document.querySelectorAll('.tab') ? 
    document.querySelectorAll('.tab').forEach(function(elem, idx) {
      var containerId = elem.getAttribute('id');
      var containerElem = elem;
      var tabLinks = elem.querySelectorAll('.tab__link');
      var tabContents = elem.querySelectorAll('.tab__content');
      var ids = [];

      tabLinks && tabLinks.length > 0 ?
      tabLinks.forEach(function(link, index, self) {
        link.onclick = function(e) {
          for (var i = 0; i < self.length; i++) {
            if (index === parseInt(i, 10)) {
              if (!self[i].classList.contains('active')) {
                self[i].classList.add('active');
                tabContents[i].style.display = 'block';
              }
            } else {
              self[i].classList.remove('active');
              tabContents[i].style.display = 'none';
            }
          }
        }
      }) : null;
    }) : null;
    // =============================================================


    // ========================== codetab ==========================
    document.querySelectorAll('.codetab') ? 
    document.querySelectorAll('.codetab').forEach(function(elem, idx) {
      var containerId = elem.getAttribute('id');
      var containerElem = elem;
      var codetabLinks = elem.querySelectorAll('.codetab__link');
      var codetabContents = elem.querySelectorAll('.codetab__content');
      var ids = [];

      codetabLinks && codetabLinks.length > 0 ?
      codetabLinks.forEach(function(link, index, self) {
        link.onclick = function(e) {
          for (var i = 0; i < self.length; i++) {
            if (index === parseInt(i, 10)) {
              if (!self[i].classList.contains('active')) {
                self[i].classList.add('active');
                codetabContents[i].style.display = 'block';
              }
            } else {
              self[i].classList.remove('active');
              codetabContents[i].style.display = 'none';
            }
          }
        }
      }) : null;
    }) : null;
    // =============================================================


    
    // ======================= toggle theme =======================
    var root = document.getElementById('root');
    var toggleToLightBtn = document.getElementById('toggleToLight');
    var toggleToDarkBtn = document.getElementById('toggleToDark');

    toggleToDark.onclick = function(e) {
      root.className = 'theme__dark';
      localStorage.setItem('theme', 'dark');
      toggleToLightBtn.className = 'navbar__icons--icon';
      toggleToDarkBtn.className = 'hide';
    }

    toggleToLight.onclick = function (e) {
      root.className = 'theme__light';
      localStorage.setItem('theme', 'light');
      toggleToLightBtn.className = 'hide';
      toggleToDarkBtn.className = 'navbar__icons--icon';
    }


    // =================== section menu collapse ==================
    document.querySelectorAll('.menu__list').forEach(function(elem) {
      if (elem.classList.contains('active')) {
        elem.style.maxHeight = elem.scrollHeight + "px"; 
      }
    });
    
    document.querySelectorAll('.menu__title--collapse').forEach(function(elem) {
      elem.addEventListener('click', function (e) {
        var content = this.nextElementSibling;
        var menuTitleIcon = this.querySelector('.menu__title--icon');
        if (!content) {
          return null;
        }

        var parent = elem.parentNode;
        while (parent.classList.contains('menu__list') && parent.classList.contains('active')) {
          parent.style.maxHeight = 100 * parent.children.length + "px";
          parent = parent.parentNode;
        }

        if (content.style.maxHeight) {
          content.style.maxHeight = null;
          content.classList.remove('active');
          menuTitleIcon.classList.add('right');
          
          if (languagedir === 'rtl') {
            menuTitleIcon.classList.remove('downrtl');
          } else {
            menuTitleIcon.classList.remove('down');
          }
        } else {
          content.style.maxHeight = content.scrollHeight + "px";
          content.classList.add('active');
          menuTitleIcon.classList.remove('right');
          
          if (languagedir === 'rtl') {
            menuTitleIcon.classList.add('downrtl');
          } else {
            menuTitleIcon.classList.add('down');
          }
        }
      });
    });
    // ============================================================


    // ========================== drawer ==========================
    var mobileLogo = document.getElementById('mobileLogo');
    var modal = document.getElementById("myModal");
    var drawer = document.getElementById('myDrawer');
    var drawerCloseBtn = document.querySelector('.drawer__close');

    var openDrawer = function() {
      modal.style.opacity = 1;

      if (languagedir === 'rtl') {
        modal.style.right = 0;
        drawer.style.right = 0;
      } else {
        modal.style.left = 0;
        drawer.style.left = 0;
      }
    }

    var closeDrawer = function() {
      modal.style.opacity = 0;

      if (languagedir === 'rtl') {
        drawer.style.right = '-100%';
      } else {
        drawer.style.left = '-100%';
      }

      
      setTimeout(function () {
        if (languagedir === 'rtl') {
          modal.style.right = '-100%';
        } else {
          modal.style.left = '-100%';
        }
      }, 250);
    }

    mobileLogo.onclick = function () {
      openDrawer();
      localStorage.setItem('isDrawerOpen', 'true');
    }

    modal.onclick = function () {
      closeDrawer();
      localStorage.setItem('isDrawerOpen', 'false');
    }

    drawerCloseBtn.onclick = function () {
      closeDrawer();
      localStorage.setItem('isDrawerOpen', 'false');
    }
  // ==============================================================


  // =========================== scroll ===========================
    var lastScrollTop = window.pageYOffset || document.documentElement.scrollTop;
    var tocElem = document.querySelector('.toc');
    var tableOfContentsElem = tocElem ? tocElem.querySelector('#TableOfContents') : null;
    var singleContentsElem = document.querySelector('.single__contents');
    var dataBGImgs = document.querySelectorAll('div[data-bgimg]');

    {{ $tocLevels := ($.Param "tocLevels") }}
    var tocLevels = JSON.parse({{ $tocLevels | jsonify }});

    if (tocLevels) {
      tocLevels = tocLevels.toString();
    } else {
      tocLevels = "h1, h2, h3, h4, h5, h6";
    }

    {{ $isLandingBgImg := $.Params.landing.backgroundImage }}
    var isLandingBgImg = JSON.parse({{ $isLandingBgImg | jsonify }});
    {{ $isHome := .IsHome }}
    var isHome = JSON.parse({{ $isHome | jsonify }});

    function setNavbarBG(scrollTop) {
      if (isHome && isLandingBgImg && Object.keys(isLandingBgImg).length) {
        if (isLandingBgImg.height <= scrollTop) {
          dataBGImgs.forEach(function(elem) {
            elem.setAttribute('data-bgimg', 'false');
          });
        } else {
          dataBGImgs.forEach(function (elem) {
            elem.setAttribute('data-bgimg', 'true');
          });
        }
      }
    }
    setNavbarBG(lastScrollTop);

    window.onscroll = function () {
      var st = window.pageYOffset || document.documentElement.scrollTop;
      if (st > lastScrollTop) { // scroll down
        singleContentsElem ? 
        singleContentsElem.querySelectorAll(tocLevels.toString()).forEach(function(elem) {
          if (document.documentElement.scrollTop >= elem.offsetTop) {
            if (tableOfContentsElem) {
              var id = elem.getAttribute('id');
              tocElem.querySelectorAll('a').forEach(function (elem) {
                elem.classList.remove('active');
              });
              tocElem.querySelector('a[href="#' + id + '"]') ? 
              tocElem.querySelector('a[href="#' + id + '"]').classList.add('active') : null;
            }
          }
        }) : null;
        setNavbarBG(st);
      } else { // scroll up
        singleContentsElem ? 
        singleContentsElem.querySelectorAll(tocLevels.toString()).forEach(function(elem) {
          if (document.documentElement.scrollTop >= elem.offsetTop) {
            if (tableOfContentsElem) {
              var id = elem.getAttribute('id');
              tocElem.querySelectorAll('a').forEach(function (elem) {
                elem.classList.remove('active');
              });
              tocElem.querySelector('a[href="#' + id + '"]') ? 
              tocElem.querySelector('a[href="#' + id + '"]').classList.add('active') : null;
            }
          }
        }) : null;
        setNavbarBG(st);
      }
      lastScrollTop = st <= 0 ? 0 : st;
    };
    // ============================================================



    // ====================== mobile search =======================
    var mobileSearchInputElem = document.querySelector('#search-mobile');
    var mobileSearchClassElem = document.querySelector('.mobile-search');
    var mobileSearchBtnElem = document.querySelector('#mobileSearchBtn');
    var mobileSearchCloseBtnElem = document.querySelector('#search-mobile-close');
    var mobileSearchContainer = document.querySelector('#search-mobile-container');
    var mobileSearchResultsElem = document.querySelector('#search-mobile-results');
    var htmlElem = document.querySelector('html');

    if (mobileSearchClassElem) {
      mobileSearchClassElem.style.display = 'none';
    }

    mobileSearchBtnElem ? 
    mobileSearchBtnElem.addEventListener('click', function () {
      if (mobileSearchContainer) {
        mobileSearchContainer.style.display = 'block';
      }

      if (mobileSearchInputElem) {
        mobileSearchInputElem.focus();
      }

      if (htmlElem) {
        htmlElem.style.overflowY = 'hidden';
      }
    }) : null;

    mobileSearchCloseBtnElem ? 
    mobileSearchCloseBtnElem.addEventListener('click', function() {
      if (mobileSearchContainer) {
        mobileSearchContainer.style.display = 'none';
      }

      if (mobileSearchInputElem) {
        mobileSearchInputElem.value = '';
      }
      
      if (mobileSearchResultsElem) {
        while (mobileSearchResultsElem.firstChild) {
          mobileSearchResultsElem.removeChild(mobileSearchResultsElem.firstChild);
        }
      }

      if (htmlElem) {
        htmlElem.style.overflowY = 'visible';
      }
    }) : null;

    mobileSearchInputElem ? 
    mobileSearchInputElem.addEventListener('keydown', function(e) {
      if (e.key === 'Escape') {
        if (mobileSearchContainer) {
          mobileSearchContainer.style.display = 'none';
        }
        
        if (mobileSearchInputElem) {
          mobileSearchInputElem.value = '';
        }

        if (mobileSearchResultsElem) {
          while (mobileSearchResultsElem.firstChild) {
            mobileSearchResultsElem.removeChild(mobileSearchResultsElem.firstChild);
          }
        }
        if (htmlElem) {
          htmlElem.style.overflowY = 'visible';
        }
      }
    }) : null;
  // ============================================================


  // ======================= theme change =======================
    var localTheme = localStorage.getItem('theme');
    var rootEleme = document.getElementById('root');
    var selectThemeElem = document.querySelectorAll('.select-theme');
    var selectThemeItemElem = document.querySelectorAll('.select-theme__item');
    
    if (localTheme) {
      selectThemeItemElem ? 
      selectThemeItemElem.forEach(function (elem) {
        if (elem.text.trim() === localTheme) {
          elem.classList.add('is-active');
        } else {
          elem.classList.remove('is-active');
        }
      }) : null;
    }

    selectThemeItemElem ? 
    selectThemeItemElem.forEach(function (v, i) {
      v.addEventListener('click', function (e) {
        var selectedThemeVariant = e.target.text.trim();
        localStorage.setItem('theme', selectedThemeVariant);

        rootEleme.removeAttribute('class');
        rootEleme.classList.add(`theme__${selectedThemeVariant}`);
        selectThemeElem.forEach(function(rootElem) {
          rootElem.querySelectorAll('a').forEach(function (elem) {
            if (elem.classList) {
              if (elem.text.trim() === selectedThemeVariant) {
                if (!elem.classList.contains('is-active')) {
                  elem.classList.add('is-active');
                }
              } else {
                if (elem.classList.contains('is-active')) {
                  elem.classList.remove('is-active');
                }
              }
            }
          });
        });

        if (window.mermaid) {
          if (selectedThemeVariant === "dark" || selectedThemeVariant === "hacker") {
            mermaid.initialize({ theme: 'dark' });
            location.reload();
          } else {
            mermaid.initialize({ theme: 'default' });
            location.reload();
          }
        }

        var utterances = document.querySelector('iframe');
        if (utterances) {
          utterances.contentWindow.postMessage({
            type: 'set-theme',
            theme: selectedThemeVariant === "dark" || selectedThemeVariant === "hacker" ? 'photon-dark' : selectedThemeVariant === 'kimbie' ? 'github-dark-orange' : 'github-light',
          }, 'https://utteranc.es');
        }
      });
    }) : null;
  // ============================================================


  // ========================== search ==========================
    {{ $langprefix := $.Site.LanguagePrefix }}
    var langprefix = JSON.parse({{ $langprefix | jsonify }});
    var searchResults = null;
    var searchMenu = null;
    var searchText = null;
    
    {{ $enableSearchHighlight := ($.Param "enableSearchHighlight") }}
    var enableSearchHighlight = JSON.parse({{ $enableSearchHighlight | jsonify }});
    {{ $enableSearch := ($.Param "enableSearch") }}
    var enableSearch = JSON.parse({{ $enableSearch | jsonify }});

    var fuse = null;

    if (enableSearch) {
      (function initFuse() {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', baseurl + langprefix + "/index.json");
        xhr.setRequestHeader('Content-Type', 'application/json; charset=utf-8');
        xhr.onload = function () {
          if (xhr.status === 200) {
            fuse = new Fuse(JSON.parse(xhr.response.toString('utf-8')), {
              keys: ['title', 'description', 'content'],
              includeMatches: enableSearchHighlight,
              shouldSort: true,
              threshold: 0.4,
              location: 0,
              distance: 100,
              maxPatternLength: 32,
              minMatchCharLength: 1,
            });
          }
          else {
            console.error(`[${xhr.status}]Error:`, xhr.statusText);
          }
        };
        xhr.send();
      })();
    }
    
    function makeLi(ulElem, obj) {
      var li = document.createElement('li');
      li.className = 'search-result__item';
      
      var a = document.createElement('a');
      a.innerHTML = obj.title;
      a.setAttribute('class', 'search-result__item--title');
      a.setAttribute('href', obj.permalink);

      var descDiv = document.createElement('div');
      descDiv.setAttribute('class', 'search-result__item--desc');
      if (obj.description) {
        descDiv.innerHTML = obj.description;
      } else if (obj.content) {
        descDiv.innerHTML = obj.content.substring(0, 80);
      }
      
      li.appendChild(a);
      li.appendChild(descDiv);
      ulElem.appendChild(li);
    }

    function makeHighlightLi(ulElem, obj) {
      var li = document.createElement('li');
      li.className = 'search-result__item';
      var descDiv = null;

      var a = document.createElement('a');
      a.innerHTML = obj.item.title;
      a.setAttribute('class', 'search-result__item--title');
      a.setAttribute('href', obj.item.uri);

      if (obj.matches && obj.matches.length) {
        for (var i = 0; i < obj.matches.length; i++) {
          if ('title' === obj.matches[i].key) {
            a = document.createElement('a');
            a.innerHTML = generateHighlightedText(obj.matches[i].value, obj.matches[i].indices);
            a.setAttribute('class', 'search-result__item--title');
            a.setAttribute('href', obj.item.uri);
          }
          
          if ('description' === obj.matches[i].key) {
            descDiv = document.createElement('div');
            descDiv.setAttribute('class', 'search-result__item--desc');
            descDiv.innerHTML = generateHighlightedText(obj.item.description, obj.matches[i].indices);
          } else if ('content' === obj.matches[i].key) {
            if (!descDiv) {
              descDiv = document.createElement('div');
              descDiv.setAttribute('class', 'search-result__item--desc');
              descDiv.innerHTML = generateHighlightedText(obj.item.content.substring(0, 80), obj.matches[i].indices);
            }
          } else {
            if (obj.item.description) {
              descDiv = document.createElement('div');
              descDiv.setAttribute('class', 'search-result__item--desc');
              descDiv.innerHTML = obj.item.description;
            } else {
              descDiv = document.createElement('div');
              descDiv.setAttribute('class', 'search-result__item--desc');
              descDiv.innerHTML = obj.item.content.substring(0, 80);
            }
          }
        }

        li.appendChild(a);
        if (descDiv) {
          li.appendChild(descDiv);
        }
        if (li) {
          ulElem.appendChild(li);
        }
      }
    }

    function renderSearchResults(searchText, results) {
      searchResults = document.getElementById('search-results');
      searchMenu = document.getElementById('search-menu');
      searchResults.setAttribute('class', 'dd is-active');
      
      var ul = document.createElement('ul');
      ul.setAttribute('class', 'dd-content search-content');

      if (results.length) {
        results.forEach(function (result) {
          var li = document.createElement('li');
          var a = document.createElement('a');
          a.setAttribute('href', result.uri);
          a.setAttribute('class', 'dd-item');
          a.appendChild(li);

          var titleDiv = document.createElement('div');
          titleDiv.innerHTML = result.title;
          titleDiv.setAttribute('class', 'search-result__item--title');

          var descDiv = document.createElement('div');
          descDiv.setAttribute('class', 'search-result__item--desc');
          if (result.description) {
            descDiv.innerHTML = result.description;
          } else if (result.content) {
            descDiv.innerHTML = result.content.substring(0, 80);
          }

          li.appendChild(titleDiv);
          li.appendChild(descDiv);
          ul.appendChild(a);
        });
      } else {
        var li = document.createElement('li');
        li.setAttribute('class', 'dd-item');
        li.innerText = 'No results found';
        ul.appendChild(li);
      }

      while (searchMenu.hasChildNodes()) {
        searchMenu.removeChild(
          searchMenu.lastChild
        );
      }
      
      searchMenu.appendChild(ul);
    }

    function renderSearchHighlightResults(searchText, results) {
      searchResults = document.getElementById('search-results');
      searchMenu = document.getElementById('search-menu');
      searchResults.setAttribute('class', 'dd is-active');

      var ul = document.createElement('ul');
      ul.setAttribute('class', 'dd-content search-content');

      if (results.length) {
        results.forEach(function (result) {
          var li = document.createElement('li');
          var a = document.createElement('a');
          var descDiv = null;

          a.setAttribute('href', result.item.uri);
          a.setAttribute('class', 'dd-item');
          a.appendChild(li);

          var titleDiv = document.createElement('div');
          titleDiv.innerHTML = result.item.title;
          titleDiv.setAttribute('class', 'search-result__item--title');
          
          if (result.matches && result.matches.length) {
            for (var i = 0; i < result.matches.length; i++) {
              if ('title' === result.matches[i].key) {
                titleDiv.innerHTML = generateHighlightedText(result.matches[i].value, result.matches[i].indices);
              }

              if ('description' === result.matches[i].key) {
                descDiv = document.createElement('div');
                descDiv.setAttribute('class', 'search-result__item--desc');
                descDiv.innerHTML = generateHighlightedText(result.item.description, result.matches[i].indices);
              } else if ('content' === result.matches[i].key) {
                if (!descDiv) {
                  descDiv = document.createElement('div');
                  descDiv.setAttribute('class', 'search-result__item--desc');
                  descDiv.innerHTML = generateHighlightedText(result.item.content.substring(0, 80), result.matches[i].indices);
                }
              } else {
                if (result.item.description) {
                  descDiv = document.createElement('div');
                  descDiv.setAttribute('class', 'search-result__item--desc');
                  descDiv.innerHTML = result.item.description;
                } else {
                  descDiv = document.createElement('div');
                  descDiv.setAttribute('class', 'search-result__item--desc');
                  descDiv.innerHTML = result.item.content.substring(0, 80);
                }
              }
            }
            
            li.appendChild(titleDiv);
            if (descDiv) {
              li.appendChild(descDiv);
            }
            ul.appendChild(a);
          }
        });
      } else {
        var li = document.createElement('li');
        li.setAttribute('class', 'dd-item');
        li.innerText = 'No results found';
        ul.appendChild(li);
      }

      while (searchMenu.hasChildNodes()) {
        searchMenu.removeChild(
          searchMenu.lastChild
        );
      }
      searchMenu.appendChild(ul);
    }

    function renderSearchResultsMobile(searchText, results) {
      searchResults = document.getElementById('search-mobile-results');

      var content = document.createElement('div');
      content.setAttribute('class', 'mobile-search__content');

      if (results.length > 0) {
        results.forEach(function (result) {
          var item = document.createElement('a');
          item.setAttribute('href', result.uri);
          item.innerHTML = '<div class="mobile-search__item"><div class="mobile-search__item--title">📄 ' + result.title + '</div><div class="mobile-search__item--desc">' + (result.description ? result.description : result.content) + '</div></div>';
          content.appendChild(item);
        });
      } else {
        var item = document.createElement('span');
        content.appendChild(item);
      }

      let wrap = document.getElementById('search-mobile-results');
      while (wrap.firstChild) {
        wrap.removeChild(wrap.firstChild)
      }
      searchResults.appendChild(content);      
    }

    function renderSearchHighlightResultsMobile(searchText, results) {
      searchResults = document.getElementById('search-mobile-results');

      var ul = document.createElement('div');
      ul.setAttribute('class', 'mobile-search__content');

      if (results.length) {
        results.forEach(function (result) {
          var li = document.createElement('li');
          var a = document.createElement('a');
          var descDiv = null;

          a.setAttribute('href', result.item.uri);
          a.appendChild(li);
          li.setAttribute('class', 'mobile-search__item');

          var titleDiv = document.createElement('div');
          titleDiv.innerHTML = result.item.title;
          titleDiv.setAttribute('class', 'mobile-search__item--title');
          
          if (result.matches && result.matches.length) {
            for (var i = 0; i < result.matches.length; i++) {
              if ('title' === result.matches[i].key) {
                titleDiv.innerHTML = generateHighlightedText(result.matches[i].value, result.matches[i].indices);
              }

              if ('description' === result.matches[i].key) {
                descDiv = document.createElement('div');
                descDiv.setAttribute('class', 'mobile-search__item--desc');
                descDiv.innerHTML = generateHighlightedText(result.item.description, result.matches[i].indices);
              } else if ('content' === result.matches[i].key) {
                if (!descDiv) {
                  descDiv = document.createElement('div');
                  descDiv.setAttribute('class', 'mobile-search__item--desc');
                  descDiv.innerHTML = generateHighlightedText(result.item.content.substring(0, 150), result.matches[i].indices);
                }
              } else {
                if (result.item.description) {
                  descDiv = document.createElement('div');
                  descDiv.setAttribute('class', 'mobile-search__item--desc');
                  descDiv.innerHTML = result.item.description;
                } else {
                  descDiv = document.createElement('div');
                  descDiv.setAttribute('class', 'mobile-search__item--desc');
                  descDiv.innerHTML = result.item.content.substring(0, 150);
                }
              }
            }
            
            li.appendChild(titleDiv);
            if (descDiv) {
              li.appendChild(descDiv);
            }
            ul.appendChild(a);
          }
        });
      } else {
        var item = document.createElement('span');
        ul.appendChild(item);
      }

      let wrap = document.getElementById('search-mobile-results');
      while (wrap.firstChild) {
        wrap.removeChild(wrap.firstChild)
      }
      searchResults.appendChild(ul);
    }

    function generateHighlightedText(text, regions) {
      if (!regions) {
        return text;
      }

      var content = '', nextUnhighlightedRegionStartingIndex = 0;

      regions.forEach(function(region) {
        if (region[0] === region[1]) {
          return null;
        }
        
        content += '' +
          text.substring(nextUnhighlightedRegionStartingIndex, region[0]) +
          '<span class="search__highlight">' +
            text.substring(region[0], region[1] + 1) +
          '</span>' +
        '';
        nextUnhighlightedRegionStartingIndex = region[1] + 1;
      });

      content += text.substring(nextUnhighlightedRegionStartingIndex);

      return content;
    };

    var searchElem = document.getElementById('search');
    var searchMobile = document.getElementById('search-mobile');
    var searchResultsContainer = document.getElementById('search-results');

    searchElem ? 
    searchElem.addEventListener('input', function(e) {
      if (!e.target.value | window.innerWidth < 770) {
        searchResultsContainer ? searchResultsContainer.setAttribute('class', 'dd') : null;
        return null;
      }

      searchText = e.target.value;
      var results = fuse.search(e.target.value);

      if (enableSearchHighlight) {
        renderSearchHighlightResults(searchText, results);
      } else {
        renderSearchResults(searchText, results);
      }

      var dropdownItems = searchResultsContainer.querySelectorAll('.dd-item');
      dropdownItems ? dropdownItems.forEach(function (item) {
        item.addEventListener('mousedown', function (e) {
          e.target.click();
        });
      }) : null;
    }) : null;

    searchElem ? 
    searchElem.addEventListener('blur', function() {
      if (window.innerWidth < 770) {
        return null;
      }
      searchResultsContainer ? searchResultsContainer.setAttribute('class', 'dd') : null;
    }) : null;

    searchElem ? 
    searchElem.addEventListener('click', function(e) {
      if (window.innerWidth < 770) {
        return null;
      }
      if (!e.target.value) {
        searchResultsContainer ? searchResultsContainer.setAttribute('class', 'dd') : null;
        return null;
      }

      searchText = e.target.value;
      var results = fuse.search(e.target.value);

      if (enableSearchHighlight) {
        renderSearchHighlightResults(searchText, results);
      } else {
        renderSearchResults(searchText, results);
      }

      var dropdownItems = searchResultsContainer.querySelectorAll('.dd-item');
      dropdownItems ? dropdownItems.forEach(function (item) {
        item.addEventListener('mousedown', function (e) {
          e.target.click();
        });
      }) : null;
    }) : null;

    var searchMenuElem = document.getElementById("search-menu");
    var activeItem = document.querySelector('#search-menu .dd-item.is-active');
    var activeIndex = null;
    var items = null;
    var searchContainerMaxHeight = 350;

    searchElem ? 
    searchElem.addEventListener('keydown', function(e) {
      if (window.innerWidth < 770) {
        return null;
      }

      var items = document.querySelectorAll('#search-menu .dd-item');
      
      if (e.key === 'ArrowDown') {
        if (activeIndex === null) {
          activeIndex = 0;
          items[activeIndex].classList.remove('is-active');
        } else {
          items[activeIndex].classList.remove('is-active');
          activeIndex = activeIndex === items.length - 1 ? 0 : activeIndex + 1;
        }
        items[activeIndex].classList.add('is-active');

        let overflowedPixel = items[activeIndex].offsetTop + items[activeIndex].clientHeight - searchContainerMaxHeight;
        if (overflowedPixel > 0) {
          document.querySelector(".search-content").scrollTop += items[activeIndex].getBoundingClientRect().height;
        } else if (activeIndex === 0) {
          document.querySelector(".search-content").scrollTop = 0;
        }
      } else if (e.key === 'ArrowUp') {
        if (activeIndex === null) {
          activeIndex = items.length - 1;
          items[activeIndex].classList.remove('is-active');
        } else {
          items[activeIndex].classList.remove('is-active');
          activeIndex = activeIndex === 0 ? items.length - 1 : activeIndex - 1;
        }
        items[activeIndex].classList.add('is-active');
        
        let overflowedPixel = items[activeIndex].offsetTop + items[activeIndex].clientHeight - searchContainerMaxHeight;
        if (overflowedPixel < 0) {
          document.querySelector(".search-content").scrollTop -= items[activeIndex].getBoundingClientRect().height;
        } else {
          document.querySelector(".search-content").scrollTop = overflowedPixel + items[activeIndex].getBoundingClientRect().height;
        }
      } else if (e.key === 'Enter') {
        var currentItemLink = items[activeIndex].getAttribute('href');
        if (currentItemLink) {
          location.href = currentItemLink;
        }
      } else if (e.key === 'Escape') {
        e.target.value = null;
        if (searchResults) {
          searchResults.classList.remove('is-active');
        }
      }
    }) : null;

    searchMobile ? 
    searchMobile.addEventListener('input', function(e) {
      if (!e.target.value) {
        let wrap = document.getElementById('search-mobile-results');
        while (wrap.firstChild) {
          wrap.removeChild(wrap.firstChild);
        }
        return null;
      }

      searchText = e.target.value;
      var results = fuse.search(e.target.value);
      
      if (enableSearchHighlight) {
        renderSearchHighlightResultsMobile(searchText, results);
      } else {
        renderSearchResultsMobile(searchText, results);
      }

      var dropdownItems = searchResultsContainer.querySelectorAll('.dd-item');
      dropdownItems ? dropdownItems.forEach(function (item) {
        item.addEventListener('mousedown', function (e) {
          e.target.click();
        });
      }) : null;
    }) : null;
  // ============================================================
  }
</script>