Witch of Git - web/blog/blob - .eleventy.js

   1 const pluginRss = require("@11ty/eleventy-plugin-rss");
   2 const pluginSyntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
   3 const Nunjucks = require("nunjucks");
   4 const nunjucksDate = require("nunjucks-date");
   5 const md = require("markdown-it")();
   6
   7 module.exports = (eleventyConfig) => {
   8     eleventyConfig.addNunjucksFilter('date', nunjucksDate);
   9     eleventyConfig.addPlugin(pluginRss);
  10     eleventyConfig.addPlugin(pluginSyntaxHighlight);
  11
  12     eleventyConfig.addPassthroughCopy("img");
  13     eleventyConfig.addPassthroughCopy("static");
  14
  15     eleventyConfig.addNunjucksShortcode("youtube", youtubeShortcode);
  16     eleventyConfig.addPairedNunjucksShortcode("tweet", tweetShortcode);
  17     eleventyConfig.addPairedShortcode("aside", asideShortcode);
  18     eleventyConfig.addPairedShortcode("figure", figureShortcode);
  19
  20     eleventyConfig.addFilter("markdown", value => md.renderInline(value));
  21     eleventyConfig.addFilter("groupby", groupbyFilter);
  22
  23     eleventyConfig.addCollection("years", collection => {
  24         const posts = collection.getFilteredByTag("posts");
  25         const items = groupby(posts, item => item.date.getFullYear());
  26         return items.reduce((obj, [k, v]) => (obj[k] = v, obj), {});
  27     });
  28
  29     return {
  30         markdownTemplateEngine: "njk",
  31     };
  32 };
  33
  34 function access(item, path) {
  35     const segments = path.split(".");
  36     for (const seg of segments) {
  37         if (item === undefined) { return null; }
  38         if (seg.endsWith("()")) {
  39             const method = item[seg.slice(0, -2)];
  40             if (method === undefined) { return null; }
  41             item = method.bind(item)();
  42         } else {
  43             item = item[seg];
  44         }
  45     }
  46     return item;
  47 }
  48
  49 function groupby(items, keyFn) {
  50     const results = [];
  51     for (const item of items) {
  52         const key = keyFn(item);
  53         if (results.length == 0 || key != results[results.length-1][0]) {
  54             results.push([key, [item]]);
  55         } else {
  56             results[results.length-1][1].push(item);
  57         }
  58     }
  59     return results;
  60 }
  61
  62 function groupbyFilter(items, path) {
  63     return groupby(items, item => access(item, path));
  64 }
  65
  66 function youtubeShortcode(items, inWidth = 560, inHeight = 315) {
  67     const width = items.width || inWidth;
  68     const height = items.height || inHeight;
  69     const allow = items.allow || "accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture"
  70     const border = items.border || "0";
  71     const video = items.video || items;
  72     if (!video) {
  73         throw "Required argument 'video'.";
  74     }
  75     const src = "https://www.youtube.com/embed/" + video;
  76     return `<div class="row flex-center">
  77  <iframe width="${width}" height="${height}" src="${src}"
  78   frameborder="${border}" allow="${allow}" allowfullscreen></iframe>
  79 </div>`;
  80 }
  81
  82 function tweetShortcode(content, items) {
  83     // @TODO: Handle parsing date
  84     return `<div class="row flex-center">
  85  <blockquote class="twitter-tweet">
  86   <p lang="en" dir="ltr">${content}</p> &mdash; ${items.name} (@${items.at})
  87   <a href="${items.link}">${items.date}</a>
  88  </blockquote>
  89  <script async src="https://platform.twitter.com/widgets.js" charset="utf-8">
  90  </script>
  91 </div>`;
  92 }
  93
  94 function asideShortcode(content, style='') {
  95     const html = md.render(content);
  96     if (style) {
  97         return `<aside class="${style}">${html}</aside>`;
  98     } else {
  99         return `<aside>${html}</aside>`;
 100     }
 101 }
 102
 103 function figureShortcode(content, { src, alt }) {
 104     const captionHtml = md.render(content);
 105     return `<figure class="col hcenter">
 106   <img src="${src}" alt="${alt}">
 107   <figcaption>${captionHtml}</figcaption>
 108 </figure>`;
 109 }