Extra TS files

app/table.ts

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+import {JSDOM} from "jsdom";
+import {format, parse} from "date-fns";
+
+async function get_page() {
+  const page = await fetch("https://www.sydney.edu.au/research/facilities/sydney-informatics-hub/workshops-and-training/training-calendar.html", {mode: "no-cors"}).then((response: Response) => {return response.text()!});
+  const dom =  new JSDOM(page);
+  return dom.window.document;
+}
+
+export async function get_table() {
+  const page = await get_page();
+  return page.querySelector("table:has(tr)")!;
+}
+
+interface EventEntry {
+  date_text: string;
+  date: Date;
+  event_name: string;
+  duration_format: string
+  link: string;
+  duration: number;
+}
+
+function parse_duration(duration: string): number {
+  const duration_pattern = /(\d+(\.\d+)?)\s?h/
+  const match = duration_pattern.exec(duration)![1];
+  return parseFloat(match);
+}
+
+function parse_row(row: string[]): EventEntry {
+  const multi_date_pattern = /(\d+)\s?-\s?\d+/
+  const date_string = row[0].replace(multi_date_pattern, "$1");
+  const date = parse(date_string, "d MMMM", new Date());
+   return {
+     date_text: row[0].trim(),
+     date: date,
+     event_name: row[1],
+     duration_format: row[2],
+     link: row[3],
+     duration: parse_duration(row[2]),
+   }
+}
+
+export async function parse_table(drop_past_events: boolean) {
+  const table = await get_table();
+  const header = table.querySelector("tr:first-of-type")!;
+  const headers = Array.from(header.children).map((el) => el.textContent!).map((s) => s.trim());
+  const rows = Array.from(table.querySelectorAll("tr:not(:first-of-type)")!);
+  let row_data: EventEntry[] = rows.map((row) => {
+    return Array.from(row.querySelectorAll("td")).map((el) => {
+      const link = el.querySelector("a");
+      if (link !== null) {
+        return link.href
+      }
+      return el.textContent || ""})
+  }).map((cells) => parse_row(cells)).sort((a, b) => a.date.getTime() - b.date.getTime());
+  if (drop_past_events) {
+    row_data = row_data.filter((event) => event.date >= new Date())
+  }
+  return {headers, row_data}
+}
+
+function event_to_html(event: EventEntry): string {
+  let link: string;
+  if (event.link.startsWith("http")) {
+    link = `<a href="${event.link}">${event.event_name}</a>`;
+  } else {
+    link = event.link.trim();
+  }
+  return `<b>${event.date_text}</b>: ${link}`
+}
+
+export function get_html_entries(events: EventEntry[]) {
+   const short_events = events.filter((e) => e.duration <= 2).map(event_to_html);
+   const medium_events = events.filter((e) => (e.duration > 2) && (e.duration <= 4)).map(event_to_html)
+   const long_events = events.filter((e) => e.duration > 4).map(event_to_html);
+   return {short_events, medium_events, long_events};
+}
+
+export function get_html_full_events(events: EventEntry[]) {
+  const entries = get_html_entries(events);
+  let full_html: string = '';
+  const {short_events, medium_events, long_events} = get_html_entries(events);
+  if (short_events.length > 0) {
+    full_html = full_html + `<h4>Short training (2 hours or less)</h4>
+${short_events.map((s) => s + "</br>").join("\n")}`;
+  }
+  if (medium_events.length > 0) {
+    full_html = full_html + `<h4>Half-day training (3-4 hours)</h4>
+${medium_events.map((s) => s + "</br>").join("\n")} `;
+  }
+  if (long_events.length > 0) {
+    full_html = full_html + `<h4>Full day training (or 2 half-days)</h4>
+${long_events.map((s) => s + "</br>").join("\n")}`;
+  }
+  return full_html;
+}

app/utils.ts

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+export function arrays_equal(a: any[], b: any[]) {
+  return a.length === b.length &&
+    a.every((v, i) => v === b[i]);
+}