Allow track downloading from the search results.

app/src/main/java/com/github/apognu/otter/activities/SearchActivity.kt

@@ -10,10 +10,13 @@ import com.github.apognu.otter.adapters.SearchAdapter
 import com.github.apognu.otter.fragments.AlbumsFragment
 import com.github.apognu.otter.fragments.ArtistsFragment
 import com.github.apognu.otter.repositories.*
-import com.github.apognu.otter.utils.Album
-import com.github.apognu.otter.utils.Artist
-import com.github.apognu.otter.utils.untilNetwork
+import com.github.apognu.otter.utils.*
+import com.google.android.exoplayer2.offline.Download
 import kotlinx.android.synthetic.main.activity_search.*
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.net.URLEncoder
 import java.util.*
 
@@ -44,6 +47,14 @@ class SearchActivity : AppCompatActivity() {
   override fun onResume() {
     super.onResume()
 
+    lifecycleScope.launch(Dispatchers.IO) {
+      EventBus.get().collect { message ->
+        when (message) {
+          is Event.DownloadChanged -> refreshDownloadedTrack(message.download)
+        }
+      }
+    }
+
     artistsRepository = ArtistsSearchRepository(this@SearchActivity, "")
     albumsRepository = AlbumsSearchRepository(this@SearchActivity, "")
     tracksRepository = TracksSearchRepository(this@SearchActivity, "")
@@ -114,6 +125,20 @@ class SearchActivity : AppCompatActivity() {
     }
   }
 
+  private suspend fun refreshDownloadedTrack(download: Download) {
+    if (download.state == Download.STATE_COMPLETED) {
+      download.getMetadata()?.let { info ->
+        adapter.tracks.withIndex().associate { it.value to it.index }.filter { it.key.id == info.id }.toList().getOrNull(0)?.let { match ->
+          log(match)
+          withContext(Dispatchers.Main) {
+            adapter.tracks[match.second].downloaded = true
+            adapter.notifyItemChanged(adapter.getPositionOf(SearchAdapter.ResultType.Track, match.second))
+          }
+        }
+      }
+    }
+  }
+
   inner class SearchResultClickListener : SearchAdapter.OnSearchResultClickListener {
     override fun onArtistClick(holder: View?, artist: Artist) {
       ArtistsFragment.openAlbums(this@SearchActivity, artist)

app/src/main/java/com/github/apognu/otter/adapters/SearchAdapter.kt

@@ -214,6 +214,7 @@ class SearchAdapter(private val context: Context?, private val listener: OnSearc
                 when (it.itemId) {
                   R.id.track_add_to_queue -> CommandBus.send(Command.AddToQueue(listOf(track)))
                   R.id.track_play_next -> CommandBus.send(Command.PlayNext(track))
+                  R.id.track_pin -> CommandBus.send(Command.PinTrack(track))
                   R.id.queue_remove -> CommandBus.send(Command.RemoveFromQueue(track))
                 }
 
@@ -228,6 +229,15 @@ class SearchAdapter(private val context: Context?, private val listener: OnSearc
     }
   }
 
+  fun getPositionOf(type: ResultType, position: Int): Int {
+    return when (type) {
+      ResultType.Artist -> position + 1
+      ResultType.Album -> position + artists.size + 2
+      ResultType.Track -> artists.size + albums.size + SECTION_COUNT + position
+      else -> 0
+    }
+  }
+
   inner class ViewHolder(view: View, val context: Context?) : RecyclerView.ViewHolder(view), View.OnClickListener {
     val handle = view.handle
     val cover = view.cover