YouTube.astro

---
interface Props extends Omit<astroHTML.JSX.IframeHTMLAttributes, 'src' | 'srcdoc'> {
  /**
   * Pass `true` to embed using `www.youtube.com` instead of `www.youtube-nocookie.com`
   */
  cookie?: boolean
  /**
   * YouTube IFrame Player API parameters
   *
   * Defaults to `{autoplay: 1}`, additional parameters will be merged into the defaults
   * @see https://developers.google.com/youtube/player_parameters#Parameters
   */
  embedParams?: EmbedParams
  /**
   * `loading` attribute for the thumbnail `<img>`
   *
   * Defaults to `"lazy"`
   */
  loading?: 'eager' | 'lazy'
  /**
   * Pass `true` to omit the "Watch on YouTube" link - saves ~3.86 KB
   */
  noLink?: boolean
  /**
   * Thumbnail image to use in the static embed
   *
   * Defaults to `"default"`, pass 1, 2 or 3 to use a screenshot from the video instead.
   */
  thumbnail?: Thumbnail
  /**
   * Thumbnail resolution
   *
   * Defaults to `"sd"` (640x480)
   */
  thumbnailRes?: ThumbnailRes
  /**
   * Title for the static embed
   */
  title: string
  /**
   * 11-digit YouTube video id
   */
  videoId: string
}

interface EmbedParams {
  autoplay?: ToggleParam
  cc_lang_pref?: string
  cc_load_policy?: ToggleParam
  color?: 'red' | 'white'
  controls?: ToggleParam
  disablekb?: ToggleParam
  enablejsapi?: ToggleParam
  end?: number
  fs?: ToggleParam
  hl?: string
  iv_load_policy?: 1 | '1' | 3 | '3'
  list?: string
  listType?: 'playlist' | 'user_uploads'
  loop?: ToggleParam
  /** @deprecated has no effect, deprecated by YouTube on August 15 2023 */
  modestbranding?: ToggleParam
  origin?: string
  playlist?: string
  playslinline?: ToggleParam
  rel?: ToggleParam
  start?: number
  widget_referrer?: string
}

type ToggleParam = 0 | '0' | 1 | '1'

type Thumbnail = 'default' | 1 | '1' | 2 | '2' | 3 | '3' | string

type ThumbnailRes = 120 | '120' | 'default' | 320 | '320' | 'medium' | 'mq' | 480 | '480' | 'high' | 'hq' | 640 | '640' | 'standard' | 'sd' | 1280 | '1280' | 'maxres'

const QUALITY_PREFIXES = {
  120: '',
  default: '',
  320: 'mq',
  medium: 'mq',
  mq: 'mq',
  480: 'hq',
  high: 'hq',
  hq: 'hq',
  640: 'sd',
  standard: 'sd',
  sd: 'sd',
  1280: 'maxres',
  maxres: 'maxres',
}

let {
  cookie = false,
  embedParams,
  loading = 'lazy',
  noLink = false,
  thumbnail = 'default',
  thumbnailRes = 'sd',
  title,
  videoId,
  ...iframeAttributes
} = Astro.props as Props

let params: EmbedParams = {autoplay: 1, ...embedParams}

let embedQuery = Object.keys(params).map(key => `${key}=${params[key]}`).join('&')
let embedUrl = `https://www.youtube${cookie ? '' : '-nocookie'}.com/embed${videoId ? `/${videoId}` : ''}${embedQuery ? `?${embedQuery}` : ''}`
let thumbnailUrl = !/^(default|1|2|3)$/.test(String(thumbnail)) ? thumbnail : `https://i.ytimg.com/vi/${videoId}/${QUALITY_PREFIXES[thumbnailRes]}${thumbnail}.jpg`

let linkSvg = `<svg viewBox="0 0 110 26"><use href="#a" style="stroke-width:2px;stroke:#000;stroke-opacity:.15;stroke-linejoin:round"/><path id="a" fill="#fff" d="M16.68.99c-3.13.04-9.66.17-11.69.69-1.49.4-2.59 1.6-2.99 3-.69 2.7-.68 8.31-.68 8.31S1.31 18.6 2 21.3c.39 1.5 1.59 2.6 2.99 3 2.69.7 13.4.68 13.4.68s10.7.01 13.4-.68c1.5-.4 2.59-1.6 2.99-3 .69-2.7.68-8.31.68-8.31s.11-5.61-.68-8.31c-.4-1.5-1.59-2.6-2.99-3C29.11.98 18.4.99 18.4.99s-.67-.01-1.71 0zm72.21.9v21.28h2.78l.31-1.37h.09c.3.5.71.88 1.21 1.18.5.3 1.08.4 1.68.4 1.1 0 1.99-.49 2.49-1.59.5-1.1.81-2.7.81-4.9v-2.4c0-1.6-.11-2.9-.31-3.9-.2-.89-.5-1.59-1-2.09-.5-.4-1.1-.59-1.9-.59-.59 0-1.18.19-1.68.49-.49.3-1.01.8-1.21 1.4V1.9h-3.28zm-49.99.78 3.9 13.9.18 6.71h3.31v-6.71l3.87-13.9h-3.37l-1.4 6.31c-.4 1.89-.71 3.19-.81 3.99h-.09c-.2-1.1-.51-2.4-.81-3.99l-1.37-6.31h-3.4zm29.59 0v2.71h3.4v17.9h3.28V5.38h3.4s0-2.71-.09-2.71h-9.99zM15 7.79l8.9 5.18-8.9 5.09V7.78zm89.4.09c-1.7 0-2.89.59-3.59 1.59-.69.99-.99 2.6-.99 4.9v2.59c0 2.2.3 3.9.99 4.9.7 1.1 1.8 1.59 3.5 1.59 1.4 0 2.38-.3 3.18-1 .7-.7 1.09-1.69 1.09-3.09v-.5l-2.9-.21c0 1-.08 1.6-.28 2-.1.4-.5.62-1 .62-.3 0-.61-.11-.81-.31-.2-.3-.3-.59-.4-1.09-.1-.5-.09-1.21-.09-2.21v-.78l5.71-.09v-2.62c0-1.6-.1-2.78-.4-3.68-.2-.89-.71-1.59-1.31-1.99-.7-.4-1.48-.59-2.68-.59zm-50.49.09c-1.09 0-2.01.18-2.71.68-.7.4-1.2 1.12-1.49 2.12-.3 1-.5 2.27-.5 3.87v2.21c0 1.5.1 2.78.4 3.78.2.9.7 1.62 1.4 2.12.69.5 1.71.68 2.81.78 1.19 0 2.08-.28 2.78-.68.69-.4 1.09-1.09 1.49-2.09.39-1 .49-2.3.49-3.9v-2.21c0-1.6-.2-2.87-.49-3.87-.3-.89-.8-1.62-1.49-2.12-.7-.5-1.58-.68-2.68-.68zm12.18.09v11.9c-.1.3-.29.48-.59.68-.2.2-.51.31-.81.31-.3 0-.58-.1-.68-.4-.1-.3-.18-.7-.18-1.4V8.16h-3.4v11.21c0 1.4.18 2.39.68 3.09.49.7 1.21 1 2.21 1 1.4 0 2.48-.69 3.18-2.09h.09l.31 1.78h2.59V8.16s-3.4 0-3.4-.09zm17.31 0v11.9c-.1.3-.29.48-.59.68-.2.2-.51.31-.81.31-.3 0-.58-.1-.68-.4-.1-.3-.21-.7-.21-1.4V8.16h-3.4v11.21c0 1.4.21 2.39.71 3.09.5.7 1.18 1 2.18 1 1.39 0 2.51-.69 3.21-2.09h.09l.28 1.78h2.62V8.16s-3.4 0-3.4-.09zm20.9 2.09c.4 0 .58.11.78.31.2.3.3.59.4 1.09.1.5.09 1.21.09 2.21v1.09h-2.5v-1.09c0-1 0-1.71.09-2.21 0-.4.11-.8.31-1 .2-.3.51-.4.81-.4zm-50.49.12c.5 0 .8.18 1 .68.19.5.28 1.3.28 2.4v4.68c0 1.1-.08 1.9-.28 2.4s-.5.68-1 .68-.79-.18-.99-.68c-.2-.5-.31-1.3-.31-2.4v-4.68c0-1.1.11-1.9.31-2.4s.49-.68.99-.68zm39.68.09c.3 0 .61.1.81.4.2.3.27.67.37 1.37.1.6.12 1.51.12 2.71l.09 1.9c0 1.1 0 1.99-.09 2.59-.1.6-.19 1.08-.49 1.28-.2.3-.5.4-.9.4-.3 0-.51-.08-.81-.18-.2-.1-.39-.29-.59-.59v-8.5c.1-.4.29-.7.59-1 .3-.3.6-.4.9-.4z"/></svg>`
let playButtonSvg = `<svg viewBox="0 0 68 48"><path d="M66.52,7.74c-0.78-2.93-2.49-5.41-5.42-6.19C55.79,.13,34,0,34,0S12.21,.13,6.9,1.55 C3.97,2.33,2.27,4.81,1.48,7.74C0.06,13.05,0,24,0,24s0.06,10.95,1.48,16.26c0.78,2.93,2.49,5.41,5.42,6.19 C12.21,47.87,34,48,34,48s21.79-0.13,27.1-1.55c2.93-0.78,4.64-3.26,5.42-6.19C67.94,34.95,68,24,68,24S67.94,13.05,66.52,7.74z" fill="#f00"></path><path d="M 45,24 27,14 27,34" fill="#fff"></path></svg>`

let gradientStyle = `.gradient{width:100%;height:49px;padding-bottom:50px;position:absolute;top:0;background-repeat:repeat-x;background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAADGCAYAAAAT+OqFAAAAdklEQVQoz42QQQ7AIAgEF/T/D+kbq/RWAlnQyyazA4aoAB4FsBSA/bFjuF1EOL7VbrIrBuusmrt4ZZORfb6ehbWdnRHEIiITaEUKa5EJqUakRSaEYBJSCY2dEstQY7AuxahwXFrvZmWl2rh4JZ07z9dLtesfNj5q0FU3A5ObbwAAAABJRU5ErkJggg==);pointer-events:none}`
let linkStyle = noLink ? '' : '.woyt{z-index:2;background:rgba(23,23,23,.8);border-bottom-right-radius:2px;border-top-right-radius:2px;bottom:5px;height:47px;position:absolute}.woyt-text{color:#fff;float:left;font:500 16px/16px "YouTube Noto",Roboto,Arial,Helvetica,sans-serif;margin-left:12px;margin-top:16px}.woyt-logo{float:right;height:16px;margin-left:9px;margin-right:12px;margin-top:16px;width:72px}'
let style = `<style>*{padding:0;margin:0;overflow:hidden}html,body{height:100%;background:#000}img{position:absolute;width:100%;top:0;bottom:0;margin:auto}.button{position:absolute;left:50%;top:50%;width:68px;height:48px;margin-left:-34px;margin-top:-24px}.top{position:absolute;top:18px;left:18px;right:18px;display:flex;flex-wrap:nowrap}.title{color:#fff;font-size:18px;white-space:nowrap;word-wrap:normal;text-shadow:0 0 2px rgba(0,0,0,.5);font-family:"YouTube Noto",Roboto,Arial,Helvetica,sans-serif;line-height:1.3;text-overflow:ellipsis;overflow:hidden}${gradientStyle}${linkStyle}</style>`

let link = noLink ? '' : `<a href="https://www.youtube.com/watch?v=${videoId}${params.start ? `&t=${params.start}s` : ''}" target="_blank" aria-label="Watch on YouTube" class="woyt"><div aria-hidden="true"><div class="woyt-text">Watch on</div><div class="woyt-logo">${linkSvg}</div></div></a>`
let srcdoc = `${style}${link}<a href="${embedUrl}"><img src="${thumbnailUrl}" alt="${title}" loading="${loading}"><div class="gradient"></div><div class="top"><div class="title">${title}</div></div><div class="button">${playButtonSvg}</div></a>`
---
<iframe
  loading={loading}
  src={embedUrl}
  srcdoc={srcdoc}
  title={title}
  {...iframeAttributes}
  allow="accelerometer;autoplay;encrypted-media;gyroscope;picture-in-picture"
  allowfullscreen
  frameborder="0"
  style="width:100%;aspect-ratio:16/9"
/>