networkmiddleware.swift

class NetworkMidddleware {
 
  let container: Container
  init(container: Container) {
    self.container = container
  }
  
  func dispatch(_ dispatch: DispatchFunction?, getState: @escaping GetState) -> (@escaping DispatchFunction) -> DispatchFunction {
    return { next in
      return { action in
        let retValue = next(action)
        
        self._dispatch(dispatch, action: action, getState: getState)
        
        return retValue
      }
    }
  }
  
  private func _dispatch(_ dispatch: DispatchFunction?, action: Action, getState: GetState) {
    switch action {
    case UserAction.getUser:
      _ = dispatch?(UserAction.fetchStarted)
      
      let network: Network = container.resolve()!
      network.getUser { result in
        _ = dispatch?(UserAction.fetchCompleted(result))
      }
      
    default:
      break
    }
  }
}