func imagePickerController()

in grow-ios-starter/swift-starter/FriendlyChatSwift/FCViewController.swift [193:235]
39 lines of code
4 McCabe index (conditional complexity)

  func imagePickerController(_ picker: UIImagePickerController,
                             didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
// Local variable inserted by Swift 4.2 migrator.
let info = convertFromUIImagePickerControllerInfoKeyDictionary(info)

    picker.dismiss(animated: true, completion:nil)
    guard let uid = Auth.auth().currentUser?.uid else { return }

    // if it's a photo from the library, not an image from the camera
    if #available(iOS 8.0, *), let referenceURL = info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey.referenceURL)] as? URL {
      let assets = PHAsset.fetchAssets(withALAssetURLs: [referenceURL], options: nil)
      let asset = assets.firstObject
      asset?.requestContentEditingInput(with: nil, completionHandler: { [weak self] (contentEditingInput, info) in
        let imageFile = contentEditingInput?.fullSizeImageURL
        let filePath = "\(uid)/\(Int(Date.timeIntervalSinceReferenceDate * 1000))/\((referenceURL as AnyObject).lastPathComponent!)"
        guard let strongSelf = self else { return }
        strongSelf.storageRef.child(filePath)
                .putFile(from: imageFile!, metadata: nil) { (metadata, error) in
                  if let error = error {
                    let nsError = error as NSError
                    print("Error uploading: \(nsError.localizedDescription)")
                    return
                  }
                  strongSelf.sendMessage(withData: [Constants.MessageFields.imageURL: strongSelf.storageRef.child((metadata?.path)!).description])
                }
      })
    } else {
      guard let image = info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey.originalImage)] as? UIImage else { return }
      let imageData = image.jpegData(compressionQuality: 0.8)
      let imagePath = "\(uid)/\(Int(Date.timeIntervalSinceReferenceDate * 1000)).jpg"
      let metadata = StorageMetadata()
      metadata.contentType = "image/jpeg"
      self.storageRef.child(imagePath)
              .putData(imageData!, metadata: metadata) { [weak self] (metadata, error) in
                if let error = error {
                  print("Error uploading: \(error)")
                  return
                }
                guard let strongSelf = self else { return }
                strongSelf.sendMessage(withData: [Constants.MessageFields.imageURL: strongSelf.storageRef.child((metadata?.path)!).description])
              }
    }
  }