HomeViewModel + SHSessionDelegate

HomeViewModel.swift

// MARK:- SHSessionDelegate
extension HomeViewModel: SHSessionDelegate {
  func session(_ session: SHSession, didFind match: SHMatch) {
    
    guard let mediaItem = match.mediaItems.first else { return }
    
    async {
      if mediaItems.contains(where: { $0.shazamID == mediaItem.shazamID }) {
        // Song already identified and in the list. Do nothing.
      } else {
        self.mediaItems.append(mediaItem)
      }
    }
  }
}