SessionManager.kt

@Singleton
class SessionManager @Inject constructor(
    private val sessionComponentFactory: SessionComponent.Factory
) {
    var sessionComponent: SessionComponent? = null
        private set

    fun isUserLoggedIn() = sessionComponent != null

    fun logout() {
        sessionComponent = null
    }

    fun loginUser() {
        userJustLoggedIn()
    }

    private fun userJustLoggedIn() {
        if (sessionComponent == null) {
            sessionComponent = sessionComponentFactory.create()
        }
    }