export type EmbedInfo = {
  platform: 'youtube' | 'dailymotion' | 'soundcloud' | 'spotify'
  id: string
  embedUrl: string
}

export function getEmbedInfo(url: string): EmbedInfo | null {
  // YouTube
  const ytMatch = url.match(
    /(?:youtube\.com\/(?:watch\?v=|embed\/|shorts\/)|youtu\.be\/)([a-zA-Z0-9_-]{11})/,
  )
  if (ytMatch) {
    return {
      platform: 'youtube',
      id: ytMatch[1],
      embedUrl: `https://www.youtube.com/embed/${ytMatch[1]}?autoplay=1`,
    }
  }

  // Dailymotion
  const dmMatch = url.match(
    /(?:dailymotion\.com\/video\/|dai\.ly\/)([a-zA-Z0-9]+)/,
  )
  if (dmMatch) {
    return {
      platform: 'dailymotion',
      id: dmMatch[1],
      embedUrl: `https://www.dailymotion.com/embed/video/${dmMatch[1]}?autoplay=1`,
    }
  }

  // SoundCloud
  if (url.includes('soundcloud.com/')) {
    return {
      platform: 'soundcloud',
      id: url,
      embedUrl: `https://w.soundcloud.com/player/?url=${encodeURIComponent(url)}&auto_play=true&visual=true`,
    }
  }

  // Spotify (episodes, shows, tracks)
  const spotifyMatch = url.match(
    /open\.spotify\.com\/(episode|show|track)\/([a-zA-Z0-9]+)/,
  )
  if (spotifyMatch) {
    const type = spotifyMatch[1]
    const id = spotifyMatch[2]
    return {
      platform: 'spotify',
      id,
      embedUrl: `https://open.spotify.com/embed/${type}/${id}?utm_source=generator&theme=0`,
    }
  }

  return null
}

export function isExternalUrl(url: string): boolean {
  return getEmbedInfo(url) !== null
}