<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />

    <title>{{{title}}}</title>
    <link rel="stylesheet" href="{{{base}}}dist/reveal.css" />
    <link rel="stylesheet" href="{{{base}}}{{{themeUrl}}}" id="theme" />
    <link rel="stylesheet" href="{{{base}}}{{{highlightThemeUrl}}}" />
	<link rel="stylesheet" href="{{{base}}}css/layout.css" />

	{{#cssPaths}}
    <link rel="stylesheet" href="{{{base}}}{{{.}}}" />
    {{/cssPaths}}

    <script defer src="{{{base}}}dist/fontawesome/all.min.js"></script>

	<script type="text/javascript">

		function fitElements(){
			const itemsToFit = document.getElementsByClassName('fitText');
			for (const item in itemsToFit) {
				if (Object.hasOwnProperty.call(itemsToFit, item)) {
					var element = itemsToFit[item];
					fitElement(element,1, 1000);
					element.classList.remove('fitText');
				}
			}
		}

		function fitElement(element, start, end){

			let size = (end + start) / 2;
			element.style.fontSize = `${size}px`;

			if(Math.abs(start - end) < 1){
				while(element.scrollHeight > element.offsetHeight){
					size--;
					element.style.fontSize = `${size}px`;
				}
				return;
			}

			if(element.scrollHeight > element.offsetHeight){
				fitElement(element, start, size);
			} else {
				fitElement(element, size, end);
			}		
		}


		document.onreadystatechange = () => {
			fitElements();
	};


        </script>
  </head>
  <body>
    <div class="reveal">
      <div class="slides">{{{slides}}}</div>
    </div>

    <script src="{{{base}}}dist/reveal.js"></script>

    <script src="{{{base}}}plugin/markdown/markdown.js"></script>
    <script src="{{{base}}}plugin/highlight/highlight.js"></script>
    <script src="{{{base}}}plugin/zoom/zoom.js"></script>
    <script src="{{{base}}}plugin/notes/notes.js"></script>
    <script src="{{{base}}}plugin/math/math.js"></script>
	<script src="{{{base}}}plugin/mermaid/mermaid.js"></script>
	<script src="{{{base}}}plugin/chart/chart.min.js"></script>
	<script src="{{{base}}}plugin/chart/plugin.js"></script>

    <script>
      function extend() {
        var target = {};
        for (var i = 0; i < arguments.length; i++) {
          var source = arguments[i];
          for (var key in source) {
            if (source.hasOwnProperty(key)) {
              target[key] = source[key];
            }
          }
        }
        return target;
      }

      function isLight(color) {
        let hex = color.replace('#', '');

        // convert #fff => #ffffff
        if(hex.length == 3){
          hex = `${hex[0]}${hex[0]}${hex[1]}${hex[1]}${hex[2]}${hex[2]}`;
        }

        const c_r = parseInt(hex.substr(0, 2), 16);
        const c_g = parseInt(hex.substr(2, 2), 16);
        const c_b = parseInt(hex.substr(4, 2), 16);
        const brightness = ((c_r * 299) + (c_g * 587) + (c_b * 114)) / 1000;
        return brightness > 155;
      }

	var bgColor = getComputedStyle(document.documentElement).getPropertyValue('--r-background-color').trim();

	if(isLight(bgColor)){
		document.body.classList.add('has-light-background');
	} else {
		document.body.classList.add('has-dark-background');
	}

      // default options to init reveal.js
      var defaultOptions = {
        controls: false,
        progress: false,
        history: false,
        center: true,
        transition: 'default', // none/fade/slide/convex/concave/zoom
        plugins: [
          RevealMarkdown,
          RevealHighlight,
          RevealZoom,
          RevealNotes,
          RevealMath.MathJax3,
		  RevealMermaid,
		  RevealChart,
        ],

		mathjax3: {
			mathjax: '{{{base}}}plugin/math/mathjax/tex-mml-chtml.js',
		},
      };

      // options from URL query string
      var queryOptions = Reveal().getQueryHash() || {};

      var options = extend(defaultOptions, {{{revealOptionsStr}}}, queryOptions);

      options.controls = false;
      options.progress = false;
      options.history = false;
      options.overview = false;
      options.slideNumber = false;
      options.keyboard = false;
    </script>

    <script>
      Reveal.initialize(options);
    </script>
  </body>
</html>
