.eleventy.js

const yaml = require("js-yaml");
const { DateTime } = require("luxon");
const syntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
const htmlmin = require("html-minifier");

module.exports = function (eleventyConfig) {
  // Disable automatic use of your .gitignore
  eleventyConfig.setUseGitIgnore(false);

  // Merge data instead of overriding
  eleventyConfig.setDataDeepMerge(true);

  // human readable date
  eleventyConfig.addFilter("readableDate", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "DD"
    );
  });

  // Wed Aug 6, 2014 (13:07)
  eleventyConfig.addFilter("readableDateTime", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "EEE DD (T)"
    );
  });

  // 06 Aug 2014
  eleventyConfig.addFilter("dateOnly", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "dd LLL yyyy"
    );
  });

  eleventyConfig.addFilter("timeOnly", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "HH:mm"
    );
  });

  eleventyConfig.addFilter("monthOnly", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "M"
    );
  });

  eleventyConfig.addFilter("yearOnly", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "yyyy"
    );
  });

    // 06 Aug 
  eleventyConfig.addFilter("dayMonthOnly", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "dd LLL"
    );
  });


  // Filtered events excluding a given type
   eleventyConfig.addFilter("newItemList", (items, item_type) => {
    return items.filter(item => item.type != item_type 
    );
  });

    // Filtered events including a given type
    eleventyConfig.addFilter("inclItemTypeList", (items, item_type) => {
      return items.filter(item => item.type == item_type 
      );
    });

  // Was returning list of items excluding the current day
  // Fix 1 day off, minus the day of local datetime before it gets compared
  eleventyConfig.addFilter("laterItemList", (items) => {
    return items.filter(item => DateTime.local().minus({days: 0.5}) <= DateTime.fromJSDate(item.start_datetime)
    );
  });
  eleventyConfig.addFilter("laterItemListConf", (items) => {
    return items.filter(item => DateTime.local().minus({days: 0.5}) <= DateTime.fromJSDate(item.end_datetime)
    );
  });
  
  // Syntax Highlighting for Code blocks
  eleventyConfig.addPlugin(syntaxHighlight);

  // To Support .yaml Extension in _data
  // You may remove this if you can use JSON
  eleventyConfig.addDataExtension("yaml", (contents) =>
    yaml.safeLoad(contents)
  );

  // Add Tailwind Output CSS as Watch Target
  eleventyConfig.addWatchTarget("./_tmp/static/css/style.css");

  // Copy Static Files to /_Site
  eleventyConfig.addPassthroughCopy({
    "./_tmp/static/css/style.css": "./static/css/style.css",
    "./src/admin/config.yml": "./admin/config.yml",
    "./node_modules/alpinejs/dist/alpine.js": "./static/js/alpine.js",
    "./node_modules/prismjs/themes/prism-tomorrow.css":
      "./static/css/prism-tomorrow.css",
  });

  // Copy Image Folder to /_site
  eleventyConfig.addPassthroughCopy("./src/static/img");

  // Copy favicon to route of /_site
  eleventyConfig.addPassthroughCopy("./src/favicon.ico");

  // Minify HTML
  eleventyConfig.addTransform("htmlmin", function (content, outputPath) {
    // Eleventy 1.0+: use this.inputPath and this.outputPath instead
    if (outputPath.endsWith(".html")) {
      let minified = htmlmin.minify(content, {
        useShortDoctype: true,
        removeComments: true,
        collapseWhitespace: true
      });
      return minified;
    }

    return content;
  });

  // Let Eleventy transform HTML files as nunjucks
  // So that we can use .html instead of .njk
  return {
    dir: {
      input: "src",
    },
    htmlTemplateEngine: "njk",
  };
};