plugin.js

const request = require("sync-request");
const fs = require("fs");
const hljs = require("highlight.js");
const urls = [];
const build_time = new Date().getTime();
exports.loadComments = function () {
  return [];
  return JSON.parse(request("GET", process.env.COMMENTS_READ).getBody());
};
exports.hooks = {
  new_page: function (name) {
    //site root exclude
    if (name == "index.html") return;
    if (name.endsWith("index.html"))
      name = name.replace(/\/index\.html$/i, "/");
    urls.push(name);
  },
  build_done: function () {
    //xml version
    const build_date = new Date();
    let base = `<?xml version="1.0" encoding="UTF-8"?>\n<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n`;
    urls.unshift("");
    base += urls
      .map(
        (e) => `<url>
<loc>https://ngeojiajun.github.io/${e}</loc>
<lastmod>${build_date.getFullYear()}-${String(
          build_date.getMonth() + 1
        ).padStart(2, 0)}-${String(build_date.getDate()).padStart(
          2,
          0
        )}</lastmod>
<priority>1.0</priority>
</url>`
      )
      .join("\n");
    base += "\n</urlset>";
    fs.writeFileSync("./out/sitemap.xml", base);
  },
};
//get effective commit of the tree
//since the tree always clean in CI so we can ignore the fact that the tree might be
//modifed
exports.git_commit = function () {
  //This will scramble the ID when it is in development mode
  if (process.env.IN_DEVELOPMENT_MODE) {
    console.warn(
      "Returning current time instead of the commit id to avoid caching the data during the modification"
    );
    return build_time;
  }
  //first check if the .git exists
  if (!fs.existsSync(".git")) {
    //the PWD is not git repo
    return "0000000000000000000000000000000000000000";
  }
  //second get its ref
  //ref can be either the commit id or the ref to branch
  const ref = fs
    .readFileSync(".git/HEAD", "utf8")
    .split(":")
    .slice(-1)[0]
    .trim();
  if (ref.includes("/")) {
    //external reference to branch
    return fs.readFileSync(`.git/${ref}`, "utf8").trim();
  } else {
    //checked out on a commit id
    return ref;
  }
};
exports.highlight = (str, lang) =>
  hljs.highlight(str, { language: lang }).value;