old-website/scripts/mdx-scripts/event-conversion.js

const fs = require("fs");
const jsdom = require("jsdom");
const { JSDOM } = jsdom;
const { window } = new JSDOM("");
global.window = window;
var showdown = require("showdown");
const converterShowdown = new showdown.Converter();
const libxmljs = require("libxmljs");

fs.readFile("./events.xml", "utf8", (err, data) => {
  if (err) {
    console.error(err);
    return;
  }
  parseXML(data);
});

fs.mkdir("./markdown-events/", { recursive: true }, (err) => {
  if (err) throw err;
});

const parseTime = (dateStr, timeStr) => {
  // if timeStr is a range (ex. 7pm - 9pm) we take the first time (ex. 7pm)
  if (/-/.exec(timeStr)) {
    timeStr = timeStr.split("-")[0];
  }
  // converting cases like 7pm to 7PM
  timeStr = timeStr.toUpperCase();
  // converting cases like 7PM to 7 PM
  if (/[0-9](a|A|p|P)/g.exec(timeStr)) {
    timeStr = timeStr.replace(/[0-9](?=(a|A|p|P))/g, "$& ");
  }
  // converting cases like 7 PM to 7:00 PM
  if (/(?<!:[0-9])[0-9] (a|A|p|P)/g.exec(timeStr)) {
    timeStr = timeStr.replace(/[0-9](?= )/, "$&:00");
  }
  // convert from CST to EST
  const OFFSET_FROM_EST = +1;
  let date = new Date(`${dateStr} ${timeStr}`);
  date.setHours(date.getHours() + OFFSET_FROM_EST);
  return date;
};

const nodeChildrenToString = (nodeChildren) => {
  let string = "";
  for (let i = 0; i < nodeChildren.length; ++i) {
    if (nodeChildren[i].type() === "text") {
      string += nodeChildren[i];
    } else {
      string += nodeChildren[i].toString();
    }
  }
  return string;
};

const parseXML = (XML) => {
  const xmlDoc = libxmljs.parseHtml(XML);
  let eventdefsChildren = xmlDoc.get("//eventdefs").childNodes();
  let currentTerm = "";
  for (let i = 0; i < eventdefsChildren.length; ++i) {
    // sometimes there's events that are commented out, hopefully this catches that
    if (
      eventdefsChildren[i].type() === "comment" &&
      /((winter)|(fall)|(spring))/.exec(
        eventdefsChildren[i].toString().toLowerCase()
      )
    ) {
      currentTerm = eventdefsChildren[i].text().replace(/[\\\\/:*?\"<>|]/g, "");
      currentTerm = currentTerm.replace(/(\s+)/g, "-");
    } else if (eventdefsChildren[i].type() === "element") {
      const title = eventdefsChildren[i].attr("title").value();
      const shortNodes = eventdefsChildren[i].get(".//short").childNodes();
      let short = converterShowdown.makeMarkdown(
        nodeChildrenToString(shortNodes)
      );
      // remove newlines from short
      short = short.replace(/\n/g, "");
      const dateStr = eventdefsChildren[i].attr("date").value();
      const timeStr = eventdefsChildren[i].attr("time").value();
      const date = parseTime(dateStr, timeStr);
      const location = eventdefsChildren[i].attr("room").value();
      const online = location.toLowerCase() === "online" ? true : false;
      let abstract = short;
      if (eventdefsChildren[i].get(".//abstract") !== undefined) {
        const abstractNodes = eventdefsChildren[i]
          .get(".//abstract")
          .childNodes();
        abstract = converterShowdown.makeMarkdown(
          nodeChildrenToString(abstractNodes)
        );
        abstract = abstract.replace(/<br>/g, "\n");
      }
      let registerLink = "";
      // detects a link in markdown such as [CSC Club Website](<http://csclub.uwaterloo.ca//>)
      const markdownLinkDetectRegex = /(?<=\[(.*)\]\(<)(.*)(?=>\))/;
      if (markdownLinkDetectRegex.exec(abstract)) {
        registerLink = `\n  registerLink: "${
          markdownLinkDetectRegex.exec(abstract)[0]
        }",`;
      }
      const mdx = `export const metadata = {
  name: "${title}",
  short: "${short}",
  date: new Date("${date.toString()}"),
  online: ${online},
  location: "${location}",${registerLink}
}

${abstract}`;

      // remove invalid characters from filenames
      let mdxTitle = title.replace(/[\\\\/:*?\"<>|]/g, "");
      mdxTitle = mdxTitle.replace(/(\s+)/g, "-");

      fs.mkdir(
        `./markdown-events/${currentTerm}`,
        { recursive: true },
        (err) => {
          if (err) throw err;
        }
      );
      fs.writeFile(
        `./markdown-events/${currentTerm}/${mdxTitle}.event.mdx`,
        mdx,
        (err) => {
          if (err) throw err;
        }
      );
    }
  }
};