const eleventyNavigationPlugin = require("@11ty/eleventy-navigation");
const markdownIt = require("markdown-it");
const markdownItFootnote = require("markdown-it-footnote");
const markdownItAnchor = require("markdown-it-anchor");
const { DateTime } = require("luxon");

const MARKDOWN_OPTIONS = {
  html: true,
  breaks: true,
  linkify: true,
  typographer: true,
};

const md = new markdownIt(MARKDOWN_OPTIONS)
  .use(markdownItFootnote)
  .use(markdownItAnchor);

module.exports = function (eleventyConfig) {
  // Libraries
  eleventyConfig.setLibrary("md", md);

  // Plugins
  eleventyConfig.addPlugin(eleventyNavigationPlugin);

  // Filters
  eleventyConfig.addFilter("formatDate", (dateObj, format) => {
    return DateTime.fromJSDate(dateObj).toFormat(format);
  });

  // Passthrough copies
  eleventyConfig.addPassthroughCopy({ "./src/res/css/**/*.css": "css" });
  eleventyConfig.addPassthroughCopy({ "./src/res/font": "font" });
  eleventyConfig.addPassthroughCopy({ "./src/res/img": "img" });
  eleventyConfig.addPassthroughCopy({ "./src/res/*.txt": "." });
  eleventyConfig.addWatchTarget("./src/res/css"); // Watch stylesheets

  return {
    dir: {
      input: "src",
      output: "_site",
    },
  };
};