export type VideoType = 'youtube' | 'vimeo' | 'direct' | 'unknown'

export interface EmbedResult {
  type: VideoType
  embedUrl: string | null
}

export function getEmbedUrl(url: string): EmbedResult {
  const trimmed = url.trim()
  if (!trimmed) return { type: 'unknown', embedUrl: null }

  // YouTube — watch?v=, youtu.be/, embed/
  const ytWatch = trimmed.match(
    /(?:youtube\.com\/watch\?(?:.*&)?v=|youtu\.be\/)([A-Za-z0-9_-]{11})/
  )
  if (ytWatch) {
    return { type: 'youtube', embedUrl: `https://www.youtube.com/embed/${ytWatch[1]}` }
  }
  if (/youtube\.com\/embed\/[A-Za-z0-9_-]{11}/.test(trimmed)) {
    return { type: 'youtube', embedUrl: trimmed }
  }

  // Vimeo — vimeo.com/ID ou player.vimeo.com/video/ID
  const vimeoMatch = trimmed.match(/vimeo\.com\/(?:video\/)?(\d+)/)
  if (vimeoMatch) {
    return { type: 'vimeo', embedUrl: `https://player.vimeo.com/video/${vimeoMatch[1]}` }
  }
  if (/player\.vimeo\.com\/video\/\d+/.test(trimmed)) {
    return { type: 'vimeo', embedUrl: trimmed }
  }

  // Arquivo direto de vídeo (.mp4 ou .webm)
  if (/\.(mp4|webm)(\?.*)?$/i.test(trimmed)) {
    return { type: 'direct', embedUrl: trimmed }
  }

  return { type: 'unknown', embedUrl: null }
}