SearchUserViewModel.kt

class SearchUserViewModel(repository: UserRepository,
                          private val sharedPrefsManager: SharedPrefsManager): BaseViewModel() {

    // FOR DATA ---
    private val userDataSource = UserDataSourceFactory(repository = repository, scope = ioScope)

    // OBSERVABLES ---
    val users = LivePagedListBuilder(userDataSource, pagedListConfig()).build()

    // PUBLIC API ---

    /**
     * Fetch a list of [User] by name
     * Called each time an user hits a key through [SearchView].
     */
    fun fetchUsersByName(query: String) {
        val search = query.trim()
        if (userDataSource.getQuery() == search) return
        userDataSource.updateQuery(search, sharedPrefsManager.getFilterWhenSearchingUsers().value)
    }

    // ...

    // UTILS ---

    private fun pagedListConfig() = PagedList.Config.Builder()
        .setInitialLoadSizeHint(5)
        .setEnablePlaceholders(false)
        .setPageSize(5 * 2)
        .build()
}