package com.jshvarts.notespaging.presentation.notelist

import android.arch.lifecycle.ViewModel
import android.arch.paging.LivePagedListBuilder
import android.arch.paging.PagedList
import com.jshvarts.notespaging.domain.GetNotesUseCase
import com.jshvarts.notespaging.domain.Note
import javax.inject.Inject

private const val PAGE_SIZE = 10
private const val INITIAL_LOAD_SIZE_HINT = 20

class NoteListViewModel @Inject constructor(
        getNotesUseCase: GetNotesUseCase
) : ViewModel() {

    private val pagedListConfig = PagedList.Config.Builder()
            .setEnablePlaceholders(true)
            .setInitialLoadSizeHint(INITIAL_LOAD_SIZE_HINT)
            .setPageSize(PAGE_SIZE)
            .build()
    val noteList = LivePagedListBuilder<Int, Note>(getNotesUseCase.allNotes(), pagedListConfig).build()
}