import markdownIt from "markdown-it";
import footnote_plugin from "markdown-it-footnote";
import readingTime from "eleventy-plugin-reading-time";

/** @param {import("@11ty/eleventy").UserConfig} eleventyConfig */
export default async function (eleventyConfig) {
  eleventyConfig.addPassthroughCopy({ assets: "/" });
  eleventyConfig.addPassthroughCopy(".well-known");
  eleventyConfig.addPassthroughCopy("**/*.jpg");
  eleventyConfig.addPassthroughCopy("**/*.png");

  eleventyConfig.addCollection("redirects", function (collectionApi) {
    let redirects = [];
    // get each post in our posts folder
    const nodes = collectionApi.getFilteredByGlob("**/*.md");
    // iterate over all the nodes
    nodes.forEach((node) =>
      // for each alias
      (node.data.aliases || []).forEach((alias) =>
        // push target url and the old url
        redirects.push([
          node.data.page.url,
          node.data.page.url.replace(/\/[^\/]*?(\..+)?$/, `/${alias}$1`),
        ]),
      ),
    );
    return redirects;
  });

  function sortByDate(values) {
    // inspired by
    let vals = [...values];
    return vals.sort((a, b) => {
      return a.data.date < b.data.date ? 1 : -1;
    });
  }
  eleventyConfig.addFilter("sortByDate", sortByDate);

  let markdownItOptions = {
    html: true,
    breaks: true,
    linkify: true,
  };
  eleventyConfig.setLibrary("md", markdownIt(markdownItOptions));
  eleventyConfig.amendLibrary("md", (mdLib) => mdLib.use(footnote_plugin));
  eleventyConfig.addPlugin(readingTime);
}