States & Events for MVI

Sample for fragment scoped States & Events(MVI) implementation via sealed class

sealed class LoginState : State {
    object UnAuthenticated : LoginState(), State.Success
    data class Authenticated(val user: User) : LoginState(), State.Success
}

sealed class LoginEvent : Event {
    data class LogIn(val user: User) : LoginEvent(), Event.Custom
    data class LoggedIn(val user: User) : LoginEvent(), Event.Custom
    object LogOut : LoginEvent(), Event.Custom
    object LoggedOut : LoginEvent(), Event.Custom
}

sealed class TweetListState : State {
    object Empty : TweetListState(), State.Empty
    object Success : TweetListState(), State.Success
    data class Error(val message: String) : TweetListState(), State.Error {
        override val error: ErrorModel
            get() = ErrorModel(message = message)
    }

    object Loading : TweetListState(), State.Loading

}

sealed class TweetListEvent : Event {
    data class GetTweetList(val userId: Long) : TweetListEvent(), Event.Custom
    data class ShowError(val message: String) : TweetListEvent(), Event.Custom
    data class ShowLoading(val data: List<Tweet>?) : TweetListEvent(), Event.Custom
}