Code refactor

app/src/main/java/code/name/monkey/retromusic/adapter/playlist/LegacyPlaylistAdapter.kt

@@ -0,0 +1,52 @@
+package code.name.monkey.retromusic.adapter.playlist
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.FragmentActivity
+import androidx.recyclerview.widget.RecyclerView
+import code.name.monkey.retromusic.adapter.base.MediaEntryViewHolder
+import code.name.monkey.retromusic.model.Playlist
+import code.name.monkey.retromusic.util.MusicUtil
+
+class LegacyPlaylistAdapter(
+    private val activity: FragmentActivity,
+    private var list: List<Playlist>,
+    private val layoutRes: Int,
+    private val playlistClickListener: PlaylistClickListener
+) :
+    RecyclerView.Adapter<LegacyPlaylistAdapter.ViewHolder>() {
+
+    fun swapData(list: List<Playlist>) {
+        this.list = list
+        notifyDataSetChanged()
+    }
+
+    class ViewHolder(itemView: View) : MediaEntryViewHolder(itemView)
+
+    override fun onCreateViewHolder(
+        parent: ViewGroup,
+        viewType: Int
+    ): ViewHolder {
+        return ViewHolder(
+            LayoutInflater.from(parent.context).inflate(layoutRes, parent, false)
+        )
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val playlist: Playlist = list[position]
+        holder.title?.text = playlist.name
+        holder.text?.text = MusicUtil.getPlaylistInfoString(activity, playlist.getSongs())
+        holder.itemView.setOnClickListener {
+            playlistClickListener.onPlaylistClick(playlist)
+        }
+    }
+
+    override fun getItemCount(): Int {
+        return list.size
+    }
+
+    interface PlaylistClickListener {
+        fun onPlaylistClick(playlist: Playlist)
+    }
+}