addEventListener('DOMContentLoaded', () => {
  /** @type{HTMLInputElement} */
  const urlField = document.getElementById('url')
  /** @type{HTMLSelectElement} */
  const site = document.getElementById('site-select')

  document.getElementById('guess-site-btn').addEventListener('click', () => {
    const url = urlField.value
    if (url.includes('/watch?v=') || url.includes('/playlist?list=')) {
      if (site.value == 'yt_proxied') {
        return
      }
      site.value = 'youtube'
    } else if (url.includes('://music.yandex.')) {
      site.value = 'yandex'
    }
  })
})