_config.ts

import anchor from "https://ga.jspm.io/npm:markdown-it-anchor@8.6.4/dist/markdownItAnchor.mjs";
import footnote from "https://ga.jspm.io/npm:markdown-it-footnote@3.0.3/index.js";
import toc from "https://ga.jspm.io/npm:markdown-it-toc-done-right@4.2.0/dist/markdownItTocDoneRight.js";
import { Element } from "https://deno.land/x/deno_dom/src/dom/element.ts";
import lume from "lume/mod.ts";
import attributes from "lume/plugins/attributes.ts";
import prism from "lume/plugins/prism.ts";
import inline from "lume/plugins/inline.ts";
import postcss from "lume/plugins/postcss.ts";
import nano from "npm:cssnano";
import resolveUrls from "lume/plugins/resolve_urls.ts";

/** language support for prism */
import "npm:prismjs@1.29.0/components/prism-bash.js";
import "npm:prismjs@1.29.0/components/prism-python.js";

const tocWithOptions = [toc, { level: 2 }];

const markdown = {
  plugins: [anchor, footnote, tocWithOptions],
  keepDefaultPlugins: true,
};

const site = lume({}, { markdown });

// Ignore all README.md files
site.ignore((path) => {
  return path.match(/^.*README\.md$/) !== null;
});

site.use(attributes())
  .use(inline())
  .use(prism())
  .use(resolveUrls());

site.use(postcss({
  extensions: [".css"],
}));
site.hooks.addPostcssPlugin(nano);

// don't process, just copy to _site/
// site.copy("assets/images");

// add attributes to all links marked with 'ext'
site.process([".html"], (page) => {
  // add appropriate attributes to external links
  page.document?.querySelectorAll("a[ext]").forEach((link) => {
    const linkEl = link as unknown as Element;
    if (!linkEl.hasAttribute("target")) {
      linkEl.setAttribute("target", "_blank");
    }
    linkEl.setAttribute("rel", "noopener noreferrer");
    linkEl.removeAttribute("ext");
  });
  // todo: work out to actually patch the markdown plugin, instead.
  page.document?.querySelectorAll(".footnote-backref").forEach((link) => {
    const linkEl = link as unknown as Element;
    linkEl.innerHTML = "[back to text]";
  });
});

export default site;