package code.name.monkey.retromusic.fragments.playlists

import android.os.Bundle
import android.view.View
import androidx.lifecycle.Observer
import androidx.recyclerview.widget.GridLayoutManager
import code.name.monkey.retromusic.R
import code.name.monkey.retromusic.adapter.playlist.PlaylistAdapter
import code.name.monkey.retromusic.fragments.base.AbsRecyclerViewFragment

class PlaylistsFragment : AbsRecyclerViewFragment<PlaylistAdapter, GridLayoutManager>() {

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        libraryViewModel.roomPlaylistsLiveData.observe(viewLifecycleOwner, Observer {
            if (it.isNotEmpty())
                adapter?.swapDataSet(it)
            else
                adapter?.swapDataSet(listOf())
        })
    }

    override val emptyMessage: Int
        get() = R.string.no_playlists

    override fun createLayoutManager(): GridLayoutManager {
        return GridLayoutManager(requireContext(), 1)
    }

    override fun createAdapter(): PlaylistAdapter {
        return PlaylistAdapter(
            requireActivity(),
            ArrayList(),
            R.layout.item_list,
            null
        )
    }


    companion object {
        fun newInstance(): PlaylistsFragment {
            return PlaylistsFragment()
        }
    }
}