Compare webpage course videos with the downloaded files to check if you didn't miss one

compareDownloads.js

var fs = require('fs');

// Use this to obtain the video names and copy the resulting array
// [...document.querySelectorAll('.heading h3')].map(el => el.innerText).sort((a,b) => (a.localeCompare(b)))

// Paste and assing the array to this variable
const webVideos =  []

function compareDownloads() {
  try {
    const folderName = 'FOLDERNAME' // Change this
    const files = fs.readdirSync(folderName)
    const fileNameToRemove = detectBiggestSameSubstring(files[1], files[2])
    const fileNames = files.map(file => file.replace(fileNameToRemove, ''));
    const courseVideos = webVideos.map(video => video.replace(/:/g, ' -'))
    const notFound = courseVideos.filter((webVideoName) => !fileNames.includes(webVideoName))
    console.log({notFound})
  } catch (err) {
    console.error(err)
  }
}

function detectBiggestSameSubstring(textA, textB) {
  const matchingStrings = []
  for (i = textA.length; i >= 0; i--) {
    const slicedText = textA.slice(0, i)
    for (i = 0; i < slicedText.length; i++) {
      let evenMoreSlicedText = slicedText.slice(i, slicedText.length)
        if (textA.includes(evenMoreSlicedText) && textB.includes(evenMoreSlicedText)) {
          matchingStrings.push(evenMoreSlicedText)
        }
    }
  }
  matchingStrings.sort((a,b) => b.length - a.length)
  return matchingStrings[0]
}

compareDownloads()