tutorials/tutorial3-completed/TicTacToe/LoggedOut/LoggedOutInteractor.swift

//
//  Copyright (c) 2017. Uber Technologies
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import RIBs
import RxSwift

protocol LoggedOutRouting: ViewableRouting {
    // TODO: Declare methods the interactor can invoke to manage sub-tree via the router.
}

protocol LoggedOutPresentable: Presentable {
    var listener: LoggedOutPresentableListener? { get set }
    // TODO: Declare methods the interactor can invoke the presenter to present data.
}

protocol LoggedOutListener: AnyObject {
    func didLogin(withPlayer1Name player1Name: String, player2Name: String)
}

final class LoggedOutInteractor: PresentableInteractor<LoggedOutPresentable>, LoggedOutInteractable, LoggedOutPresentableListener {

    weak var router: LoggedOutRouting?

    weak var listener: LoggedOutListener?

    // TODO: Add additional dependencies to constructor. Do not perform any logic
    // in constructor.
    override init(presenter: LoggedOutPresentable) {
        super.init(presenter: presenter)
        presenter.listener = self
    }

    override func didBecomeActive() {
        super.didBecomeActive()
        // TODO: Implement business logic here.
    }

    override func willResignActive() {
        super.willResignActive()
        // TODO: Pause any business logic.
    }

    // MARK: - LoggedOutPresentableListener

    func login(withPlayer1Name player1Name: String?, player2Name: String?) {
        let player1NameWithDefault = playerName(player1Name, withDefaultName: "Player 1")
        let player2NameWithDefault = playerName(player2Name, withDefaultName: "Player 2")

        listener?.didLogin(withPlayer1Name: player1NameWithDefault, player2Name: player2NameWithDefault)
    }

    private func playerName(_ name: String?, withDefaultName defaultName: String) -> String {
        if let name = name {
            return name.isEmpty ? defaultName : name
        } else {
            return defaultName
        }
    }
}