SocialSigninCR.swift

import RKCommon
import RxSwift
import UIKit

enum SocialSigninCoordinationResult {
    case successGoogle(Bool)
    case successFacebook
    case error(Error)
    case cancel
}

class SocialSigninCR: BaseCoordinator<SocialSigninCoordinationResult> {
    let navigationController: UINavigationController
    let authenticator: FireAuthenticatorProtocol

    public init(navigationController: UINavigationController,
                authenticator: FireAuthenticatorProtocol) {
        self.navigationController = navigationController
        self.authenticator = authenticator
    }

    override func start() -> Observable<SocialSigninCoordinationResult> {
        let viewController = SocialSigninVC.initFromStoryboard(name: "SocialSigninSB")
        viewController.modalPresentationStyle = .overCurrentContext

        let viewModel = SocialSigninVM(authenticator: authenticator)
        viewController.viewModel = viewModel

        let successGoogle = viewModel.didLogedInGoogle.map { SocialSigninCoordinationResult.successGoogle($0) }
        let successFacebook = viewModel.didLogedInFacebook.map { _ in SocialSigninCoordinationResult.successFacebook }
        let cancel = viewModel.didCancel.map { _ in SocialSigninCoordinationResult.cancel }

        navigationController.navigationBar.isHidden = true
        navigationController.present(viewController, animated: true, completion: nil)

        return Observable.merge(successGoogle, successFacebook, cancel)
            .take(1)
            .do(onNext: { _ in
                viewController.dismiss(animated: true)
            })
    }
}