LONDON-IOS/GME Remit/Modules/Notice/DetailNotification/User Interface/Presenter/DetailNotificationPresenter.swift

//
//  DetailNotificationPresenter.swift
//  GME Remit
//
//  Created by InKwon James Kim on 2020/02/11.
//Copyright © 2020 Gobal Money Express Co. Ltd. All rights reserved.
//

import RxSwift
import RxCocoa

class DetailNotificationPresenter: ViewModelType {
  var interactor: DetailNotificationInteractorInput?
  var wireframe: DetailNotificationWireframeInput?
  
  struct Input {
    let viewWillAppear: Driver<Void>
  }
  
  struct Output {
    let isError: Driver<Error>
    let isProgress: Driver<Bool>
    let model: Driver<DetailNoticeModel>
  }

  private let disposeBag = DisposeBag()
  
  private let progressLinker = PublishSubject<Bool>()
  private let errorLinker = PublishSubject<Error>()
  private let model = PublishSubject<DetailNoticeModel>()
  
  private var index = ""
  
  init(index: String) {
    self.index = index
  }
  
  func transform(input: Input) -> Output {
    input.viewWillAppear.drive(onNext: {[weak self] in
      guard let `self` = self else { return }
      self.progressLinker.onNext(true)
      self.interactor?.fetchDetail(self.index)
    }).disposed(by: disposeBag)
    
    return Output(
      isError: errorLinker.asDriverOnErrorJustComplete(),
      isProgress: progressLinker.asDriverOnErrorJustComplete(),
      model: model.asDriverOnErrorJustComplete()
    )
  }
}

// MARK: DetailNotification interactor output interface
extension DetailNotificationPresenter: DetailNotificationInteractorOutput {
  func setModel(with model: DetailNoticeModel) {
    progressLinker.onNext(false)
    self.model.onNext(model)
  }
  
  func setError(with error: Error) {
    progressLinker.onNext(false)
    errorLinker.onNext(error)
  }
}