#!/bin/bash
# https://docs.sheetjs.com/docs/getting-started/installation/deno

cd /tmp
rm -rf sheetjs-bun
mkdir sheetjs-bun
cd sheetjs-bun

bun init -y
bun i --save https://cdn.sheetjs.com/xlsx-0.20.3/xlsx-0.20.3.tgz

cat <<EOF >SheetJSNodeJS.js
const XLSX = require("xlsx");

(async() => {
  /* fetch JSON data and parse */
  const url = "https://docs.sheetjs.com/executive.json";
  const raw_data = await (await fetch(url)).json();

  /* filter for the Presidents */
  const prez = raw_data.filter(row => row.terms.some(term => term.type === "prez"));

  /* sort by first presidential term */
  prez.forEach(row => row.start = row.terms.find(term => term.type === "prez").start);
  prez.sort((l,r) => l.start.localeCompare(r.start));

  /* flatten objects */
  const rows = prez.map(row => ({
    name: row.name.first + " " + row.name.last,
    birthday: row.bio.birthday
  }));

  /* generate worksheet and workbook */
  const worksheet = XLSX.utils.json_to_sheet(rows);
  const workbook = XLSX.utils.book_new();
  XLSX.utils.book_append_sheet(workbook, worksheet, "Dates");

  /* fix headers */
  XLSX.utils.sheet_add_aoa(worksheet, [["Name", "Birthday"]], { origin: "A1" });

  /* calculate column width */
  const max_width = rows.reduce((w, r) => Math.max(w, r.name.length), 10);
  worksheet["!cols"] = [ { wch: max_width } ];

  /* create an XLSX file and try to save to Presidents.xlsx */
  XLSX.writeFile(workbook, "Presidents.xlsx", { compression: true });
})();
EOF

bun SheetJSNodeJS.js
npx xlsx-cli Presidents.xlsx | head