elf-knight-maker-downloader.js

const fs = require('fs')
const puppeteer = require('puppeteer-core')
const MAKER_ENDPOINT = `https://thtl1999.github.io/elf-knight-maker/`
const DATABASE_ENDPOINT = `https://www.db.yugioh-card.com/yugiohdb/card_search.action`

async function fetchCardsFromText (browser, text) {
  const page = await browser.newPage()

  await page.goto(MAKER_ENDPOINT, {waitUntil: 'networkidle0'})
  await page.click('#reset-button')
  await page.type('#user-string', text)
  await page.click('#start-button')
  await page.waitForSelector('#colored-text span')
  
  return page.evaluate(() => [...document.querySelectorAll('#card-list a')].map(card => ({
    name: card.textContent,
    id: new URL(card.getAttribute('href')).searchParams.get('cid'),
    letter: card.querySelector('span:not([style*="lightgrey"])').textContent
  })))
}

function openCardImageStream (browser, card) {
  return new Promise(async (resolve, reject) => {
    const page = await browser.newPage()

    await page.setRequestInterception(true)
    await page.on('request', req => req.continue())
    await page.on('response', async res => {
      const {pathname, searchParams: params} = new URL(res.url())
      if (pathname !== '/yugiohdb/get_image.action') return
      if (params.get('cid') !== card.id || params.get('type') !== '2') return

      resolve(await res.buffer())
      await page.close()
    })

    try { await page.goto(`${DATABASE_ENDPOINT}?ope=2&cid=${card.id}&request_locale=ko`) } catch (err) { }
  })
}

async function main (text) {
  const browser = await puppeteer.launch({
    headless: false,
    args: ['--lang=ko-KR'],
    executablePath: "C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe"
  })

  const dir = text.replace(/\s/g, '_')
  await fs.promises.mkdir(dir)

  const cards = await fetchCardsFromText(browser, text)
  await Promise.all(cards.map(async (card, index) => {
    const buffer = await openCardImageStream(browser, card)
    await fs.promises.writeFile(`${dir}\\${index.toString().padStart(3, '0')}-${card.letter}.png`, buffer)
  }))

  await browser.close()
}

try { main(`신이슈가르드 학살자 풀금단 해두고 공명 영식 2주차 맞이한 엘프 용기사`) } catch (e) { console.error(e) }