const { DateTime } = require("luxon");
const markdownItAnchor = require("markdown-it-anchor");
const pluginRss = require("@11ty/eleventy-plugin-rss");
const pluginSyntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
const pluginNavigation = require("@11ty/eleventy-navigation");
const { EleventyHtmlBasePlugin } = require("@11ty/eleventy");
let markdownIt = require("markdown-it");
const htmlmin = require('html-minifier');

let options = {
  // whatever options you have set for the library here
};
let mdfigcaption = require('markdown-it-image-figures');
let figoptions = {
  figcaption: true
};
const mdLib = markdownIt(options).use(mdfigcaption, figoptions);

module.exports = function(eleventyConfig) {
  eleventyConfig.setUseGitIgnore(false);

  eleventyConfig.setLibrary("md", mdLib);

  // Watch our compiled assets for changes
  eleventyConfig.addWatchTarget('./src/compiled-assets/main.css');
  //eleventyConfig.addWatchTarget('./src/compiled-assets/main.js');
  //eleventyConfig.addWatchTarget('./src/compiled-assets/vendor.js');

  // Copy src/compiled-assets to /assets
  eleventyConfig.addPassthroughCopy({ 'src/compiled-assets': 'assets' });
  // Copy all images
  eleventyConfig.addPassthroughCopy('src/images');

    // Add plugins
  eleventyConfig.addPlugin(pluginRss);
  eleventyConfig.addPlugin(pluginSyntaxHighlight);
  eleventyConfig.addPlugin(pluginNavigation);
  eleventyConfig.addPlugin(EleventyHtmlBasePlugin);

  eleventyConfig.addFilter("env", (key, def="NOT DEFINED") => process.env[key] || def);

  eleventyConfig.addFilter("readableDate", (dateObj, format = "dd LLLL yyyy") => {
    return DateTime.fromJSDate(dateObj, {zone: 'utc', locale: 'fr'}).toFormat(format);
  });

  // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
  eleventyConfig.addFilter('htmlDateString', (dateObj) => {
    return DateTime.fromJSDate(dateObj, {zone: 'utc', locale: 'fr'}).toFormat('yyyy-LL-dd');
  });

  // Get the first `n` elements of a collection.
  eleventyConfig.addFilter("head", (array, n) => {
    if(!Array.isArray(array) || array.length === 0) {
      return [];
    }
    if( n < 0 ) {
      return array.slice(n);
    }

    return array.slice(0, n);
  });

  // Return the smallest number argument
  eleventyConfig.addFilter("min", (...numbers) => {
    return Math.min.apply(null, numbers);
  });

  // Return all the tags used in a collection
  eleventyConfig.addFilter("getAllTags", collection => {
    let tagSet = new Set();
    for(let item of collection) {
      (item.data.tags || []).forEach(tag => tagSet.add(tag));
    }
    return Array.from(tagSet).sort((a, b) => {
      return a.localeCompare(b, undefined, {sensitivity: 'base'});
    });
  });

  eleventyConfig.addFilter("filterTagList", function filterTagList(tags) {
    return (tags || []).filter(tag => ["all", "nav", "post", "posts"].indexOf(tag) === -1);
  });

  // Customize Markdown library and settings:
  eleventyConfig.amendLibrary("md", mdLib => {
    mdLib.use(markdownItAnchor, {
      permalink: markdownItAnchor.permalink.ariaHidden({
        placement: "after",
        class: "direct-link",
        symbol: "#",
      }),
      level: [1,2,3,4],
      slugify: eleventyConfig.getFilter("slug")
    });
  });

    // Override @11ty/eleventy-dev-server defaults (used only with --serve)
  eleventyConfig.setServerOptions({
    showVersion: true,
  });

  if (process.env.ELEVENTY_ENV === 'production') {
    eleventyConfig.addTransform('htmlmin', (content, outputPath) => {
      if (outputPath.endsWith('.html')) {
        return htmlmin.minify(content, {
          collapseInlineTagWhitespace: false,
          collapseWhitespace: true,
          removeComments: true,
          sortClassName: true,
          useShortDoctype: true,
        });
      }

      return content;
    });
  }

  return {
    // Control which files Eleventy will process
    // e.g.: *.md, *.njk, *.html, *.liquid
    templateFormats: [
      "md",
      "njk",
      "html",
      "liquid"
    ],

    // Pre-process *.md files with: (default: `liquid`)
    markdownTemplateEngine: "njk",

    // Pre-process *.html files with: (default: `liquid`)
    htmlTemplateEngine: "njk",

    // -----------------------------------------------------------------
    // If your site deploys to a subdirectory, change `pathPrefix`.
    // Don’t worry about leading and trailing slashes, we normalize these.

    // If you don’t have a subdirectory, use "" or "/" (they do the same thing)
    // This is only used for link URLs (it does not affect your file structure)
    // Best paired with the `url` filter: https://www.11ty.dev/docs/filters/url/

    // You can also pass this in on the command line using `--pathprefix`

    // Optional (default is shown)
    pathPrefix: "/",
    // -----------------------------------------------------------------

    // These are all optional (defaults are shown):
    dir: {
      input: 'src',
      includes: '_components',
      layouts: '_layouts',
      output: 'dist',
    },
  };
};

// const fs = require("fs");
// const path = require("path");
// const { DateTime } = require("luxon");
// const rosetta = require("rosetta");
// const markdownItAnchor = require("markdown-it-anchor");
// const pluginRss = require("@11ty/eleventy-plugin-rss");
// const pluginSyntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
// const pluginNavigation = require("@11ty/eleventy-navigation");
// const { EleventyI18nPlugin, EleventyHtmlBasePlugin } = require("@11ty/eleventy");
// const languageStrings = require("./i18n.js");
// let markdownIt = require("markdown-it");
// let options = {
//   // whatever options you have set for the library here
// };
// let mdfigcaption = require('markdown-it-image-figures');
// let figoptions = {
//   figcaption: true
// };
// const mdLib = markdownIt(options).use(mdfigcaption, figoptions);
//
// const manifestPath = path.resolve(__dirname, "_site", "assets", "manifest.json");
// const manifest = JSON.parse(
//   fs.readFileSync(manifestPath, { encoding: "utf8" })
// );
//
// module.exports = function(eleventyConfig) {
//   eleventyConfig.ignores.add("README.md");
//
//   eleventyConfig.setLibrary("md", mdLib);
//
//   // Adds a universal shortcode to return the URL to a webpack asset. In Nunjack templates:
//   // {% webpackAsset 'main.js' %} or {% webpackAsset 'main.css' %}
//   eleventyConfig.addShortcode("webpackAsset", function(name) {
//     if (!manifest[name]) {
//       throw new Error(`The asset ${name} does not exist in ${manifestPath}`);
//     }
//     return manifest[name];
//   });
//
//   // Copy all images directly to dist.
//   eleventyConfig.addPassthroughCopy({ "public/img": "img" });
//
//   // Copy the contents of the `public` folder to the output folder
//   // For example, `./public/css/` ends up in `_site/css/`
//   // eleventyConfig.addPassthroughCopy({
//   //   "./node_modules/prismjs/themes/prism-okaidia.css": "/public/css/prism-theme.css",
//   // });
//   // // Watch our compiled assets for changes
//   // eleventyConfig.addWatchTarget('./src/compiled-assets/main.css');
//   // // Copy src/compiled-assets to /assets
//   // eleventyConfig.addPassthroughCopy({ 'src/compiled-assets': 'assets' });
//
//   // Add plugins
//   eleventyConfig.addPlugin(pluginRss);
//   eleventyConfig.addPlugin(pluginSyntaxHighlight);
//   eleventyConfig.addPlugin(pluginNavigation);
//   eleventyConfig.addPlugin(EleventyHtmlBasePlugin);
//
//   eleventyConfig.addPlugin(EleventyI18nPlugin, {
//     defaultLanguage: "fr",
//     errorMode: "allow-fallback",
//   });
//
//   eleventyConfig.addFilter("readableDate", (dateObj, format = "dd LLLL yyyy") => {
//     return DateTime.fromJSDate(dateObj, {zone: 'utc', locale: 'fr'}).toFormat(format);
//   });
//
//   // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
//   eleventyConfig.addFilter('htmlDateString', (dateObj) => {
//     return DateTime.fromJSDate(dateObj, {zone: 'utc', locale: 'fr'}).toFormat('yyyy-LL-dd');
//   });
//
//   // Get the first `n` elements of a collection.
//   eleventyConfig.addFilter("head", (array, n) => {
//     if(!Array.isArray(array) || array.length === 0) {
//       return [];
//     }
//     if( n < 0 ) {
//       return array.slice(n);
//     }
//
//     return array.slice(0, n);
//   });
//
//   // Return the smallest number argument
//   eleventyConfig.addFilter("min", (...numbers) => {
//     return Math.min.apply(null, numbers);
//   });
//
//   // Return all the tags used in a collection
//   eleventyConfig.addFilter("getAllTags", collection => {
//     let tagSet = new Set();
//     for(let item of collection) {
//       (item.data.tags || []).forEach(tag => tagSet.add(tag));
//     }
//     return Array.from(tagSet).sort((a, b) => {
//       return a.localeCompare(b, undefined, {sensitivity: 'base'});
//     });
//   });
//
//   eleventyConfig.addFilter("filterTagList", function filterTagList(tags) {
//     return (tags || []).filter(tag => ["all", "nav", "post", "posts"].indexOf(tag) === -1);
//   });
//
//   // Customize Markdown library and settings:
//   eleventyConfig.amendLibrary("md", mdLib => {
//     mdLib.use(markdownItAnchor, {
//       permalink: markdownItAnchor.permalink.ariaHidden({
//         placement: "after",
//         class: "direct-link",
//         symbol: "#",
//       }),
//       level: [1,2,3,4],
//       slugify: eleventyConfig.getFilter("slug")
//     });
//   });
//
//   // Override @11ty/eleventy-dev-server defaults (used only with --serve)
//   eleventyConfig.setServerOptions({
//     showVersion: true,
//   });
//
//   // i18n filter using Rosetta
//   const rosettaLib = rosetta(languageStrings);
//
//   eleventyConfig.addFilter("i18n", function (key, lang) {
//     const I18N_PREFIX = "i18n.";
//     if(key.startsWith(I18N_PREFIX)) {
//       key = key.slice(I18N_PREFIX.length);
//     }
//     // depends on page.lang in 2.0.0-canary.14+
//     let page = this.page || this.ctx?.page || this.context?.environments?.page || {};
//     return rosettaLib.t(key, {}, lang || page.lang);
//   });
//
//   return {
//     // Control which files Eleventy will process
//     // e.g.: *.md, *.njk, *.html, *.liquid
//     templateFormats: [
//       "md",
//       "njk",
//       "html",
//       "liquid"
//     ],
//
//     // Pre-process *.md files with: (default: `liquid`)
//     markdownTemplateEngine: "njk",
//
//     // Pre-process *.html files with: (default: `liquid`)
//     htmlTemplateEngine: "njk",
//
//     // -----------------------------------------------------------------
//     // If your site deploys to a subdirectory, change `pathPrefix`.
//     // Don’t worry about leading and trailing slashes, we normalize these.
//
//     // If you don’t have a subdirectory, use "" or "/" (they do the same thing)
//     // This is only used for link URLs (it does not affect your file structure)
//     // Best paired with the `url` filter: https://www.11ty.dev/docs/filters/url/
//
//     // You can also pass this in on the command line using `--pathprefix`
//
//     // Optional (default is shown)
//     pathPrefix: "/",
//     // -----------------------------------------------------------------
//
//     // These are all optional (defaults are shown):
//     dir: {
//       input: ".",
//       includes: "_includes",
//       data: "_data",
//       output: "_site"
//     }
//   };
// };