export type Opts = {
  /** support retreiving oembed metadata */
  oembed?: boolean
  /** req/res timeout in ms, it resets on redirect. 0 to disable (OS limit applies) */
  timeout?: number
  /** maximum redirect count. 0 to not follow redirect */
  follow?: number
  /** support gzip/deflate content encoding */
  compress?: boolean
  /** maximum response body size in bytes. 0 to disable */
  size?: number
  /** User-Agent string is often used for content negotiation */
  userAgent?: string
  /** Custom fetch implementation */
  fetch?: (url: string) => Promise<any /* Response */>
}

export type Metadata = {
  title?: string
  description?: string
  keywords?: string[]
  favicon?: string
  author?: string
  oEmbed?: {
    type: 'photo' | 'video' | 'link' | 'rich'
    version?: string
    title?: string
    author_name?: string
    author_url?: string
    provider_name?: string
    provider_url?: string
    cache_age?: number
    thumbnails?: [{
      url?: string
      width?: number
      height?: number
    }]
  }
  twitter_card: {
    card: string
    site?: string
    creator?: string
    creator_id?: string
    title?: string
    description?: string
    players?: {
      url: string
      stream?: string
      height?: number
      width?: number
    }[]
    apps: {
      iphone: {
        id: string
        name: string
        url: string
      }
      ipad: {
        id: string
        name: string
        url: string
      }
      googleplay: {
        id: string
        name: string
        url: string
      }
    }
    images: {
      url: string
      alt: string
    }[]
  }
  open_graph: {
    title: string
    type: string
    images?: {
      url: string
      secure_url?: string
      type: string
      width: number
      height: number
    }[]
    url?: string
    audio?: {
      url: string
      secure_url?: string
      type: string
    }[]
    description?: string
    determiner?: string
    site_name?: string
    locale: string
    locale_alt: string
    videos: {
      url: string
      stream?: string
      height?: number
      width?: number
      tags?: string[]
    }[]
    article: {
      published_time?: string
      modified_time?: string
      expiration_time?: string
      author?: string
      section?: string
      tags?: string[]
    }
  }
}