gistfile1.txt

class SettingsControllerFacade {
    
    private let bag = DisposeBag()
    private let controller: SettingsControllerType
    
    private let _settingGroups = PublishSubject<[SettingGroup]>()
    
    init(
        controller: SettingsControllerType
        ) {
        self.controller = controller
    }
    
    var settingGroups: Observable<[SettingGroup]> {
        return _settingGroups
            .asObservable()
    }

    private func notify() {
        self._settingGroups.onNext(self.controller.settingGroups)
    }
    
    func resetWith(o: Observable<Void>) {
        
        o.subscribe(onNext: { [unowned self] _ in
            self.controller.reset()
            self.notify()
        })
            .disposed(by: bag)
    }

    func updateSettingWith(o: Observable<(SettingKey, SettingValue)>) {
        
        o.subscribe(onNext: { [unowned self] kv in
            self.controller.updateSetting(key: kv.0, value: kv.1)
            self.notify()
        })
            .disposed(by: bag)
    }
}