LONDON-IOS/GME Remit/Modules/RemittanceModules/InboundModules/InboundReceipt/User Interface/Presenter/InboundReceiptPresenter.swift

//
//  InboundReceiptPresenter.swift
//  GME Remit
//
//  Created by InKwon James Kim on 2019/11/14.
//Copyright © 2019 Gobal Money Express Co. Ltd. All rights reserved.
//

import RxSwift
import RxCocoa

class InboundReceiptPresenter: ViewModelType {
  var interactor: InboundReceiptInteractorInput?
  var wireframe: InboundReceiptWireframeInput?
  
  struct Input {
    let viewWillAppear: Driver<Void>
    let register: Driver<Void>
    let cancel: Driver<Void>
  }
  
  struct Output {
    let isError: Driver<Error>
    let isProgress: Driver<Bool>
    let model: Driver<TransactionModel>
    let status: Driver<InboundStatus>
  }

  private let disposeBag = DisposeBag()
  
  private let progressLinker = PublishSubject<Bool>()
  private let errorLinker = PublishSubject<Error>()
  private let model = PublishSubject<TransactionModel>()
  private let status = PublishSubject<InboundStatus>()
  
  func transform(input: Input) -> Output {
    input.viewWillAppear.drive(onNext: {[weak self] in
      self?.interactor?.fetch()
    }).disposed(by: disposeBag)
    
    input.register.withLatestFrom(model.asDriverOnErrorJustComplete()) {$1}
      .drive(onNext: {[weak self] in
        guard let `self` = self else { return }
        self.wireframe?.openAddInboundAccount(with: $0, delegate: self)
      }).disposed(by: disposeBag)
    
    return Output(
      isError: errorLinker.asDriverOnErrorJustComplete(),
      isProgress: progressLinker.asDriverOnErrorJustComplete(),
      model: model.asDriverOnErrorJustComplete(),
      status: status.asDriverOnErrorJustComplete()
    )
  }
}

// MARK: InboundReceipt interactor output interface
extension InboundReceiptPresenter: InboundReceiptInteractorOutput {
  func setModel(with model: TransactionModel) {
    self.model.onNext(model)
    
    guard
      let inboundStatus = model.inboundStatus?.lowercased() else {
      return
    }
    
    let type = InboundStatus(rawValue: inboundStatus) ?? .processing
    
    status.onNext(type)
  }
  
  func setError(with error: Error) {
    errorLinker.onNext(error)
  }
}

// MARK: InboundPennyTestSubmitDelegate
extension InboundReceiptPresenter: InboundPennyTestSubmitDelegate {
  func didSuccess(_ viewController: UIViewController) {
    wireframe?.pop()
  }
  
  func didCancel(_ viewController: UIViewController) {
    // if canceled penny test verification.
  }
}