const markdownIt = require("markdown-it");
const slugify = require("@sindresorhus/slugify");
const markdownItAnchor = require("markdown-it-anchor");
const markdownItObsidian = require("markdown-it-obsidian");
const markdownItAttrs = require("markdown-it-attrs");
const pluginRss = require("@11ty/eleventy-plugin-rss");

module.exports = function (eleventyConfig) {
  eleventyConfig.addPlugin(pluginRss);

  eleventyConfig.addPassthroughCopy({ 'assets/css': 'css' });
  eleventyConfig.addPassthroughCopy({ 'assets/fonts': 'fonts' });
  eleventyConfig.addPassthroughCopy({ 'assets/images': 'images' });
  eleventyConfig.addPassthroughCopy({
    'node_modules/simpledotcss/simple.css': 'css/simple.css',
  });

  eleventyConfig.addFilter("makeRfc822Date", function (value) {
    return new Date(value).toUTCString();
  });
  eleventyConfig.addFilter("formatDatetimeForHumans", function (value) {
    const dt = new Date(value);
    const formattedDt = new Intl.DateTimeFormat("en", {
      dateStyle: "medium",
      timeStyle: "medium",
    }).format(dt);
    return formattedDt;
  });
  eleventyConfig.addFilter("formatDateForHumans", function (value) {
    const dt = new Date(value);
    const formattedDt = new Intl.DateTimeFormat("en", {
      dateStyle: "medium",
    }).format(dt);
    return formattedDt;
  });

  const markdownLibrary = markdownIt()
    .use(markdownItAnchor, { slugify })
    .use(
      markdownItObsidian({
        slugifyOnPageLinks: slugify,
      })
    )
    .use(markdownItAttrs);
  eleventyConfig.setLibrary("md", markdownLibrary);

  return {
    dir: {
      input: 'src',
      output: 'dist',
    },
  };
};