{{ $js := .Site.Data.lib.js }}
{{ $css := .Site.Data.lib.css }}

{{ $jquery := resources.Get "js/jquery.min.js" | resources.Fingerprint }}
<script defer src="{{ $jquery.RelPermalink }}"></script>
{{ $clipboard := resources.Get "js/clipboard.min.js" | resources.Fingerprint }}
<script defer src="{{ $clipboard.RelPermalink }}"></script>
{{ $enquire := resources.Get "js/enquire.min.js" | resources.Fingerprint }}
<script defer src="{{ $enquire.RelPermalink }}"></script>
{{ $prism := resources.Get "js/prism.min.js" | resources.Minify | resources.Fingerprint }}
<script defer src="{{ $prism.RelPermalink }}"></script>
{{ $zzo := resources.Get "js/zzo.js" | resources.Minify | resources.Fingerprint }}
<script defer src="{{ $zzo.RelPermalink }}"></script>

{{ if $.Param "enablePhotoSwipe" }}
  {{ $fancyboxjs := resources.Get "js/jquery.fancybox.min.js" | resources.Fingerprint }}
  <script defer src="{{ $fancyboxjs.RelPermalink }}"></script>
  {{ $fancyboxcss := resources.Get "css/jquery.fancybox.min.css" | resources.Fingerprint }}
  <link rel="stylesheet" href="{{ $fancyboxcss.RelPermalink }}">
{{ end }}

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

{{ if in .Params.Libraries "mermaid" }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"mermaid\"></script>" $js.mermaid.url $js.mermaid.sri | safeHTML }}
{{ end }}

{{ if in .Params.Libraries "katex" }}
  {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" $css.katex.url $css.katex.sri | safeHTML }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"katex\"></script>" $js.katex.url $js.katex.sri | safeHTML }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"katex\"></script>" $js.katex_auto_render.url $js.katex_auto_render.sri | safeHTML }}
{{ end }}

{{ if in .Params.Libraries "flowchartjs" }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"raphael\"></script>" $js.raphael.url $js.raphael.sri | safeHTML }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"flowchartjs\"></script>" $js.flowchartjs.url $js.flowchartjs.sri | safeHTML }}
{{ end }}

{{ if in .Params.Libraries "mathjax" }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"mathjax\"></script>" $js.mathjax.url $js.mathjax.sri | safeHTML }}
{{ end }}

{{ if in .Params.Libraries "msc" }}
  {{ printf "<script defer src=\"%s\" crossorigin=\"anonymous\" title=\"webfont\"></script>" $js.webfont.url | safeHTML }}
  {{ printf "<script defer src=\"%s\" crossorigin=\"anonymous\" title=\"snap_svg\"></script>" $js.snap_svg.url | safeHTML }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"lodash\"></script>" $js.lodash.url $js.lodash.sri | safeHTML }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"sequence_diagram\"></script>" $js.sequence_diagram.url $js.sequence_diagram.sri | safeHTML }}
  {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" $css.sequence_diagram.url $css.sequence_diagram.sri | safeHTML }}
{{ end }}

{{ if in .Params.Libraries "chart" }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"chart\"></script>" $js.chart.url $js.chart.sri | safeHTML }}
{{ end }}

{{ if in .Params.Libraries "wavedrom" }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"wavedrom\"></script>" $js.wavedrom.url $js.wavedrom.sri | safeHTML }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"wavedrom_skin\"></script>" $js.wavedrom_skin.url $js.wavedrom_skin.sri | safeHTML }}
{{ end }}

{{ if in .Params.Libraries "viz" }}
  {{ printf "<script defer src=\"%s\" crossorigin=\"anonymous\" title=\"viz\"></script>" $js.viz.url | safeHTML }}
  {{ printf "<script defer src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" title=\"viz_render\"></script>" $js.viz_render.url $js.viz_render.sri | safeHTML }}
{{ end }}


<script>
  window.onload = function() {
    // highlight  
    $("pre[class*='language-']").each(function () {
      $(this).removeAttr('style');
      var langName = $(this).attr('class').replace('chroma language-', '').toUpperCase();
      $(this).closest('table').attr('data-content', langName);
    });

    $('.lntable').each(function () {
      if (!$(this).attr('data-content')) {
        $(this).attr('data-content', 'Code');
      }
    });

    // search
    {{ $searchLanguages := .Site.Params.searchLanguages }}
    var searchLanguages = JSON.parse({{ $searchLanguages | jsonify }});
    {{ if .Site.IsMultiLingual }}
        var baseurl = "{{.Site.BaseURL}}{{.Site.LanguagePrefix}}";
    {{ else }}
        var baseurl = "{{.Site.BaseURL}}";
    {{ end }}

    if (!searchLanguages) {
      searchLanguages = ['en'];
    }

    var lunrIndex = null;
    var pagesIndex = null;
    var searchResults = null;
    var searchMenu = null;

    function endsWith(str, suffix) {
      return str.indexOf(suffix, str.length - suffix.length) !== -1;
    }

    function initLunr() {
      if (!endsWith(baseurl, "/")) {
        baseurl = baseurl + '/';
      };
      
      $.getJSON(baseurl + "index.json")
        .done(function (index) {
          pagesIndex = index;
          lunrIndex = lunr(function () {
            this.use(lunr.multiLanguage(...searchLanguages));
            this.ref('uri');
            this.field('title');
            this.field('description');
            this.field('content');
            //this.field('tags');
            //this.field('series');
            //this.field('categories');

            var that = this;
            index.forEach(function (page) {
              that.add(page);
            });
          });
        })
        .fail(function (jqxhr, textStatus, error) {
          var err = textStatus + ", " + error;
          console.error("Error getting Hugo index file:", err);
        });
    }

    function search(query) {
      return lunrIndex.search(query).map(function (result) {
        return pagesIndex.filter(function (page) {
          return page.uri === result.ref;
        })[0];
      });
    }

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

      var content = document.createElement('div');
      content.setAttribute('class', 'dropdown-content search-content');

      if (results.length > 0) {
        results.forEach(function (result) {
          var item = document.createElement('a');
          item.setAttribute('href', result.uri);
          item.setAttribute('class', 'dropdown-item');
          item.innerHTML = `<div class="menu-item"><div class="menu-item__title">» ${result.title}</div><div class="menu-item__desc">${result.description ? result.description : result.content}</div></div>`;
          content.appendChild(item);
        });
      } else {
        var item = document.createElement('span');
        item.setAttribute('class', 'dropdown-item');
        item.innerText = 'No results found';
        content.appendChild(item);
      }

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

    function renderSearchResultsMobile(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);
      }

      $('#search-mobile-results').empty();
      searchResults.appendChild(content);
    }

    initLunr();

    $("#search").on('input', function (e) {
      if (!e.target.value) {
        $('#search-results').attr('class', 'dropdown');
        return null;
      }

      if ($(window).width() < 770) {
        return null;
      } 

      var results = search(e.target.value);
      renderSearchResults(results);
    });

    $('#search').on('blur', function () {
      if ($(window).width() < 770) {
        return null;
      }
      setTimeout(function () {
        $('#search-results').attr('class', 'dropdown');
      }, 100);
    });

    $('#search').on('click', function (e) {
      if ($(window).width() < 770) {
        return null;
      }
      if (!e.target.value) {
        $('#search-results').attr('class', 'dropdown');
        return null;
      }
      var results = search(e.target.value);
      renderSearchResults(results);
    });

    $('#search').on('keydown', function (e) {
      if ($(window).width() < 770) {
        return null;
      }
      var items = $('#search-menu .dropdown-item');
      var activeIndex = $('#search-menu .dropdown-item.is-active').index();

      items.removeClass('is-active');
      if (e.key === 'ArrowDown') {
        items.eq(activeIndex + 1).addClass('is-active');
      } else if (e.key === 'ArrowUp') {
        items.eq(activeIndex - 1).addClass('is-active');
      } else if (e.key === 'Enter') {
        var currentItemLink = items.eq(activeIndex).attr('href');
        if (currentItemLink) {
          location.href = currentItemLink;
        }
      }
    });

    $("#search-mobile").on('input', function(e) {
      if (!e.target.value) {
        $('#search-mobile-results').empty();
        return null;
      }

      var results = search(e.target.value);
      renderSearchResultsMobile(results);
    });

    var navbar = $('.navbar');

    // toc
    {{ $enableToc := ($.Param "enableToc") }}
    var enableToc = JSON.parse({{ $enableToc | jsonify }});
    
    if (enableToc) {
      $("#toc").toc({ content: ".single__contents", headings: "h1,h2,h3,h4" });
      $('#toc > li').each(function () {
        $(this).find('ul').css('display', 'none');
      });
      $('#toc a').each(function () {
        $(this).click(function () {
          navbar.removeClass('navbar--show');
          navbar.removeClass('navbar--hide');
          navbar.addClass('navbar--hide');

          $(".single__contents :header").each(function () {
            $('.toc a').removeClass('active');
          });
          $(this).addClass('active');

          $('#toc > li').each(function () {
            $(this).find('ul').css('display', 'none');
          });
          $(this).next().css('display', 'block');
          $(this).parents('ul').css('display', 'block');
        });
      });

      // toc visibility
      $("#toggle-toc").change(function () {
        if (this.checked) {
          $('.toc').fadeIn(200);
        } else {
          $('.toc').fadeOut(200);
        }
      });
    }    

    // Add link button for every
    var text, clip = new ClipboardJS('.anchor');
    var headers = $('.single__contents :header').not('h6').not('h5');
    headers.append(function (index, html) {
      var element = $(this);
      var url = encodeURI(document.location.origin + document.location.pathname);
      var link = url + "#" + element[0].id;
      return " <span class='anchor hide' data-clipboard-text='" + link + "' style='position: relative;'>" +
        "<span style='font-size: 1rem; position: absolute; right: -2rem; top: 50%; transform: translateY(-50%)'>🔗</span>" +
        "</span>"
        ;
    });
    headers.on('mouseenter', function () {
      $(this).find('.anchor').attr('class', 'anchor');
    });
    headers.on('mouseleave', function () {
      $(this).find('.anchor').attr('class', 'anchor hide');
    });

    $(".anchor").on('mouseleave', function (e) {
      $(this).attr('aria-label', null).removeClass('tooltipped tooltipped-s tooltipped-w');
    });

    clip.on('success', function (e) {
      e.clearSelection();
      $(e.trigger).attr('aria-label', 'Link copied to clipboard!').addClass('tooltipped tooltipped-s');
    });

    // clipboard
    var clipInit = false;
    $('code').each(function () {
      var code = $(this),
        text = code.text();

      if (text.length > 30) {
        if (!clipInit) {
          var text, clip = new ClipboardJS('.copy-to-clipboard', {
            text: function (trigger) {
              text = $(trigger).prev('code').text();
              return text.replace(/^\$\s/gm, '');
            }
          });

          var inPre;
          clip.on('success', function (e) {
            e.clearSelection();
            inPre = $(e.trigger).parent().prop('tagName') == 'PRE';
            $(e.trigger).attr('aria-label', 'Copied to clipboard!').addClass('tooltipped tooltipped-' + (inPre ? 'w' : 's'));
          });

          clip.on('error', function (e) {
            inPre = $(e.trigger).parent().prop('tagName') == 'PRE';
            $(e.trigger).attr('aria-label', fallbackMessage(e.action)).addClass('tooltipped tooltipped-' + (inPre ? 'w' : 's'));
            $(document).one('copy', function () {
              $(e.trigger).attr('aria-label', 'Copied to clipboard!').addClass('tooltipped tooltipped-' + (inPre ? 'w' : 's'));
            });
          });

          clipInit = true;
        }

        code.after('<span class="copy-to-clipboard" title="Copy to clipboard" />');
        code.next('.copy-to-clipboard').on('mouseleave', function () {
          $(this).attr('aria-label', null).removeClass('tooltipped tooltipped-s tooltipped-w');
        });
      }
    });

    // fancybox
    {{ $enablePhotoSwipe := ($.Param "enablePhotoSwipe") }}
    var enablePhotoSwipe = JSON.parse({{ $enablePhotoSwipe | jsonify }});
    
    if (enablePhotoSwipe) {
      $('[data-fancybox="gallery"]').fancybox({
        loop: true,
        keyboard: true,
        clickContent: true,
        buttons: [
          "zoom",
          "slideShow",
          "fullScreen",
          "download",
          "thumbs",
          "close",
        ],
        caption: function (instance, item) {
          return $(this).data('alt') || '';
        }
      });

      var imgElements = $('.single__contents:not(".single__contents--gallery")').find('img');
      imgElements.each(function (i, v) {
        $(this).css('cursor', 'pointer');
        $(this).wrap(`<a data-fancybox="gallery" href="${$(this).attr('src')}" data-alt="${$(this).attr('alt')}" data-caption="${$(this).attr('alt')}"></a>`);
      });
    }

    // mermaid
    {{ $lib := .Params.libraries }}
    var lib = JSON.parse({{ $lib | jsonify }});

    if (lib && lib.includes('mermaid')) {
      {{ $themeVariant := (index .Site.Params.themeOptions 0) }}
      var themeVariant = localStorage.getItem('theme') || JSON.parse({{ $themeVariant | jsonify }});

      if (themeVariant === "dark" || themeVariant === "hacker") {
        mermaid.initialize({ theme: 'dark' });
      } else {
        mermaid.initialize({ theme: 'default' });
      }   
      
      // mermaid Fix Mermaid.js clash with Highlight.js.  
      $('code.language-mermaid:odd').each(function() {
        $(this).unwrap('pre');
        $(this).replaceWith(function () {
          return $("<div />").append($(this).contents()).addClass('mermaid').css('padding', '30px 8px 8px');
        });
      });

      $('code.language-mermaid').each(function (index, node) {
        $(this).css('display', 'none');
      });
    }

    // katex
    if (lib && lib.includes('katex')) {
      var mathElements = document.getElementsByClassName('math');
      var options = [
        { left: "$$", right: "$$", display: true },
        { left: "\\(", right: "\\)", display: false },
        { left: "\\[", right: "\\]", display: true }
      ];

      renderMathInElement(document.getElementsByClassName('single__contents')[0], options);
    }

    // flowchart.js
    if (lib && lib.includes('flowchartjs')) {
      {{ $flowchartjs := .Site.Data.flowchartjs }}
      var options = JSON.parse({{ $flowchartjs | jsonify }});

      $('code.language-flowchart:odd').each(function (index, node) {
        var diagramContent = $(this).contents();
        $(this).closest('table').attr('data-content', 'FLOWCHART');
        $(this).unwrap('pre');
        $(this).replaceWith(function () {
          return $("<div id='diagram' data-content='flowchart'></div>").append(diagramContent.text()).addClass('diagram').css('padding', '30px 8px 8px').css('margin-top', '40px');
        });      

        var diagram = flowchart.parse(diagramContent.text());      
        $('#diagram').empty();
        diagram.drawSVG('diagram', options);      
      });    

      $('code.language-flowchart').each(function (index, node) {      
        $(this).unwrap('pre');
        $(this).replaceWith(function () {
          return $("<div></div>");
        });      
      });
    }

    // mathjax
    if (lib && lib.includes('mathjax')) {
      window.MathJax = {
        tex: {
          inlineMath: [['$', '$'], ['\\(', '\\)']],
          displayMath: [['$$', '$$'], ['\\[', '\\]']],
          processEscapes: false,
          packages: { '[+]': ['noerrors'] }
        },
        loader: {
          load: ['[tex]/noerrors']
        },
      };
    }

    // js-sequence-diagram
    if (lib && lib.includes('msc')) {
      {{ $msc := .Site.Data.msc }}
      var options = JSON.parse({{ $msc | jsonify }});    

      $('code.language-msc:odd').each(function() {
        $(this).unwrap('pre');
        $(this).replaceWith(function () {
          return $("<div />").append($(this).contents()).addClass('diagram').css('padding', '30px 8px 8px').css('margin-top', '40px');
        });
      });
      $(".diagram").sequenceDiagram(options);

      $('code.language-msc').each(function (index, node) {
        $(this).css('display', 'none');
      });
    }

    // chart.js
    if (lib && lib.includes('chart')) {
      var borderColor = "#666";
      var bgColor = "#ddd";
      var borderWidth = 2;

      Chart.defaults.global.elements.rectangle.borderWidth = borderWidth;
      Chart.defaults.global.elements.rectangle.borderColor = borderColor;
      Chart.defaults.global.elements.rectangle.backgroundColor = bgColor;

      Chart.defaults.global.elements.line.borderWidth = borderWidth;
      Chart.defaults.global.elements.line.borderColor = borderColor;
      Chart.defaults.global.elements.line.backgroundColor = bgColor;

      Chart.defaults.global.elements.point.borderWidth = borderWidth;
      Chart.defaults.global.elements.point.borderColor = borderColor;
      Chart.defaults.global.elements.point.backgroundColor = bgColor;

      $('code.language-chart:odd').each(function (index, node) {
        $(this).unwrap('pre');

        node0 = document.createElement('canvas');
        node0.height = 200;
        node0.style.height = 200;
        node0.id = 'myChart' + index;
        source = JSON.parse(node.innerText);
        node.parentNode.insertBefore(node0, node);
        var ctx = document.getElementById('myChart' + index).getContext('2d');
        var myChart = new Chart(ctx, source);

        $(this).closest('td').css('padding', '40px 8px 8px');
        $(this).hide();
      });

      $('code.language-chart:even').each(function (index, node) {
        $(this).css('display', 'none');
      });
    }

    // wavedrom
    if (lib && lib.includes('wavedrom')) {
      $('code.language-wave:odd').each(function (index, node) {
        $(this).unwrap('pre');

        node0 = document.createElement('div');
        node0.id = 'WaveDrom_Display_' + index;
        source = JSON.parse(node.innerText);
        node.parentNode.insertBefore(node0, node);

        WaveDrom.RenderWaveForm(index, source, "WaveDrom_Display_");

        $(this).closest('td').css('padding', '40px 12px 12px 0');
        $(this).hide();
      });

      $('code.language-wave').each(function (index, node) {
        $(this).css('display', 'none');
      });
    }

    // viz diagram
    if (lib && lib.includes('viz')) {
      var vizPrefix = "language-viz-";
      $('pre[class*="language-viz-"]:odd').each(function (index, node) {
        $(this).unwrap('pre');

        var engine;
        node.getAttribute("class").split(" ").forEach(function (cls) {
          if (cls.startsWith(vizPrefix)) {
            engine = cls.substr(vizPrefix.length);
          }
        });
        var viz = new Viz();
        viz.renderSVGElement(node.innerText, { engine: engine })
          .then(function (element) {
            element.style.width = "100%";
            node.parentNode.insertBefore(element, node);
          });
        $(this).closest('td').css('padding', '40px 0 16px 0');
        $(this).hide();
      });
      $('code[class*="language-viz-"]:even').each(function (index, node) {
        $(this).hide();
      });
    }
  }
</script>