.eleventy.js

if (process.env.ELEVENTY_ENV !== 'production') {
  require('dotenv').config();
}

// Flags whether we compress the output etc
const isProduction = process.env.ELEVENTY_ENV === 'production';

const markdownIt = require('markdown-it');
const markdownItAttrs = require('markdown-it-attrs');
const markdownItAnchor = require('markdown-it-anchor');

// Breadcrumb trail
const eleventyNavigationPlugin = require('@11ty/eleventy-navigation');

// Table of contents
const eleventyPluginTOC = require('@thedigitalman/eleventy-plugin-toc-a11y');

// Dates
const { DateTime } = require('luxon');

const markdownItOptions = {
  html: true,
  breaks: true,
  linkify: false
};

const markdownItAnchorOptions = {
  level: 2,
  tabIndex: false
};

module.exports = function (eleventyConfig) {

  // Watch for changes
  eleventyConfig.addWatchTarget('./src/assets');

  // Date published and updated formatting
  eleventyConfig.addFilter('publishedDate', dateObj => {
    return DateTime.fromJSDate(dateObj, { zone: 'utc' }).toFormat('LLLL yyyy');
  });

  eleventyConfig.setUseGitIgnore(false);

  // Copy GOV.UK fonts
  // eleventyConfig.addPassthroughCopy({'node_modules/govuk-frontend/govuk/assets/fonts': 'assets/fonts'});

  // Copy GOV.UK assets
  eleventyConfig.addPassthroughCopy({ 'node_modules/govuk-frontend/govuk/assets/images': 'assets/images' });

  // Copy GOV.UK javascript
  eleventyConfig.addPassthroughCopy({ 'node_modules/govuk-frontend/govuk/all.js': 'assets/scripts/govuk.js' });

  // Copy HMCTS Cookies javascript
  eleventyConfig.addPassthroughCopy({ './src/assets/scripts/cookie-manager-1.0.0.min.js': 'assets/scripts/cookie-manager-1.0.0.min.js' });

  // Copy cookies javascript
  eleventyConfig.addPassthroughCopy({ './components/cookies/cookies.js': 'assets/scripts/cookies.js' });

  // Copy MOD.UK assets
  eleventyConfig.addPassthroughCopy({ './src/assets/images': 'assets/images' });

  // Copy downloads folder
  eleventyConfig.addPassthroughCopy({ './src/downloads': 'downloads' });

  // Table of contents
  eleventyConfig.addPlugin(eleventyPluginTOC, {
    tags: ['h2'],
    wrapper: 'nav',
    wrapperClass: 'moduk-contents-list',
    heading: true,
    headingClass: 'moduk-contents-list__title',
    headingLevel: 'h2',
    headingText: 'Contents',
    listType: 'ol',
    listClass: 'moduk-contents-list__list',
    listItemClass: 'moduk-contents-list__list-item moduk-contents-list__list-item--dashed',
    listItemAnchorClass: 'moduk-contents-list__link govuk-link govuk-link--no-visited-state',
  });

  // Macros used in markdown files
  eleventyConfig.addCollection('everything', (collectionApi) => {
    const macroImport = `{%- from 'system/component.njk' import component -%}{%- from 'system/modukcomponent.njk' import modukcomponent -%}`
    let collMacros = collectionApi.getFilteredByGlob('src/**/*.md')
    collMacros.forEach((item) => {
      item.template.frontMatter.content = `${macroImport}\n${item.template.frontMatter.content}`
    })
    return collMacros
  });

  // Markdown configurations
  eleventyConfig.setLibrary('md', markdownIt(markdownItOptions).use(markdownItAnchor, markdownItAnchorOptions).use(markdownItAttrs));

  // Navigation
  eleventyConfig.addPlugin(eleventyNavigationPlugin);

  // Suppresses output of the paths of all generated files
  eleventyConfig.setQuietMode(false);

  // Configurations
  return {

    dir: {
      input: 'src',
      output: 'public',
      includes: '_includes'
    },
    templateFormats: ['md', 'njk', 'html'],
    markdownTemplateEngine: 'njk',
    htmlTemplateEngine: 'njk',
    dataTemplateEngine: 'njk'
  };

};