Dropbox.swift

public class DropboxDestination: BaseDestination {
  private let client: DropboxClient
  public init(accessToken: String) {
    client = DropboxClient(accessToken: accessToken)
  }

  override public func send(_ level: SwiftyBeaver.Level, msg: String,
                            thread: String, file: String, function: String,
                            line: Int, context: Any?) -> String? {
    let str = super.send(level, msg: msg, thread: thread,
                         file: file, function: function, line: line, context: context)!
    let fileString = fileContent(message: msg).data(using: .utf8)!
    let _ = client.files.upload(path: "/\(str).txt", autorename: true, input: fileString).response { (_, error) in
      if let error = error {
        print(error)
      }
    }
    return str
  }

  private func fileContent(message: String) -> String {
    let device = UIDevice.current
    return """
    Model: \(device.modelName)
    System: \(device.systemName) \(device.systemVersion)
    Message: \(message)
    """
  }
}