#!/usr/bin/env pwsh
# https://docs.sheetjs.com/docs/demos/frontend/bundler/systemjs

$oldDir = Get-Location
$tempDir = Join-Path -Path $env:TEMP -ChildPath "sheetjs-systemjs"
if (Test-Path -Path $tempDir) { Remove-Item -Path $tempDir -Recurse -Force }
New-Item -ItemType Directory -Path $tempDir | Out-Null
Set-Location -Path $tempDir

npm init -y

## NodeJS Demo

npm i --save https://cdn.sheetjs.com/xlsx-0.20.3/xlsx-0.20.3.tgz

Invoke-WebRequest -Uri "https://docs.sheetjs.com/systemjs/SheetJSystem.js" -OutFile "SheetJSystem.js"

$versions = @("6.x", "0.21.6", "0.20.19", "0.19.47")
foreach ($v in $versions) {
  Write-Host "SystemJS NodeJS version $v"

  npm i --save "systemjs@$v"
  node SheetJSystem.js
  npx -y xlsx-cli Presidents.xlsx | Select-Object -First 3
  Remove-Item -Path "Presidents.xlsx" -Force
}

## Browser Demo

Invoke-WebRequest -Uri "https://docs.sheetjs.com/pres.xlsx" -OutFile "pres.xlsx"

npm i --save puppeteer

@'
const path = require('path');
const puppeteer = require('puppeteer');
(async() => {
  await new Promise((res,rej) => setTimeout(res, 1000));
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  page.on("console", msg => console.log("PAGE LOG:", msg.text()));
  await page.setViewport({width: 1920, height: 1080});
  const client = await page.target().createCDPSession();
  await client.send('Browser.setDownloadBehavior', {
    behavior: 'allow',
    downloadPath: require("path").resolve('./')
  });
  await page.goto('https://docs.sheetjs.com/systemjs/systemjs');
  await new Promise((res,rej) => setTimeout(res, 3000)); // required in windows tests
  const xlf = await page.$('#xlf');
  await xlf.uploadFile(path.resolve('./pres.xlsx'));
  await page.evaluate(() => {
    const xlf = document.querySelector('#xlf');
    const evt = new Event('change', { bubbles: true });
    xlf.dispatchEvent(evt);
  });
  await new Promise((res,rej) => setTimeout(res, 1000));
  const text = await page.$eval('#out', el => el.innerText);
  console.log(text);
  await browser.close();
  process.exit();
})();
'@ | Out-File -FilePath "test.js" -Encoding utf8

Write-Host "SystemJS Browser Demo"
node test.js

Set-Location $oldDir
Remove-Item -Path $tempDir -Recurse -Force