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
  18     eleventyConfig.addFilter("markdown", value => md.renderInline(value));
  19     eleventyConfig.addFilter("groupby", groupbyFilter);
  20
  21     eleventyConfig.addCollection("years", collection => {
  22         const posts = collection.getFilteredByTag("posts");
  23         const items = groupby(posts, item => item.date.getFullYear());
  24         return items.reduce((obj, [k, v]) => (obj[k] = v, obj), {});
  25     });
  26
  27     return {
  28         markdownTemplateEngine: "njk",
  29     };
  30 };
  31
  32 function access(item, path) {
  33     const segments = path.split(".");
  34     for (const seg of segments) {
  35         if (item === undefined) { return null; }
  36         if (seg.endsWith("()")) {
  37             const method = item[seg.slice(0, -2)];
  38             if (method === undefined) { return null; }
  39             item = method.bind(item)();
  40         } else {
  41             item = item[seg];
  42         }
  43     }
  44     return item;
  45 }
  46
  47 function groupby(items, keyFn) {
  48     const results = [];
  49     for (const item of items) {
  50         const key = keyFn(item);
  51         if (results.length == 0 || key != results[results.length-1][0]) {
  52             results.push([key, [item]]);
  53         } else {
  54             results[results.length-1][1].push(item);
  55         }
  56     }
  57     return results;
  58 }
  59
  60 function groupbyFilter(items, path) {
  61     return groupby(items, item => access(item, path));
  62 }
  63
  64 function youtubeShortcode(items, inWidth, inHeight) {
  65     const width = items.width || inWidth || 560;
  66     const height = items.height || inHeight || 315;
  67     const allow = items.allow || "accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture"
  68     const border = items.border || "0";
  69     const video = items.video || items;
  70     if (!video) {
  71         throw "Required argument 'video'.";
  72     }
  73     const src = "https://www.youtube.com/embed/" + video;
  74     return `<div class="row flex-center">
  75  <iframe width="${width}" height="${height}" src="${src}"
  76   frameborder="${border}" allow="${allow}" allowfullscreen></iframe>
  77 </div>`;
  78 }
  79
  80 function tweetShortcode(content, items) {
  81     // @TODO: Handle parsing date
  82     return `<div class="row flex-center">
  83  <blockquote class="twitter-tweet">
  84   <p lang="en" dir="ltr">${content}</p> &mdash; ${items.name} (@${items.at})
  85   <a href="${items.link}">${items.date}</a>
  86  </blockquote>
  87  <script async src="https://platform.twitter.com/widgets.js" charset="utf-8">
  88  </script>
  89 </div>`;
  90 }