Enable albums on LibraryFragment

Readd album support to LibraryFragment.

app/src/main/java/org/oxycblt/auxio/MainFragment.kt

@@ -21,9 +21,6 @@ import org.oxycblt.auxio.theme.toColor
 class MainFragment : Fragment() {
     private val shownFragments = listOf(0, 1)
 
-    private val libraryFragment: LibraryFragment by lazy { LibraryFragment() }
-    private val songsFragment: SongsFragment by lazy { SongsFragment() }
-
     private val tabIcons = listOf(
         R.drawable.ic_library,
         R.drawable.ic_song
@@ -81,10 +78,10 @@ class MainFragment : Fragment() {
 
     private fun fragmentAt(position: Int): Fragment {
         return when (position) {
-            0 -> libraryFragment
+            0 -> LibraryFragment()
-            1 -> songsFragment
+            1 -> SongsFragment()
 
-            else -> libraryFragment
+            else -> SongsFragment()
         }
     }
 
@@ -99,13 +96,14 @@ class MainFragment : Fragment() {
                 return fragmentAt(position)
             }
 
-            // Not sure how this would happen but it might
+            // If a fragment that shouldn't be shown is somehow shown anyway, just return
+            // its intended fragment.
             Log.e(
                 this::class.simpleName,
-                "Attempted to index a fragment that shouldn't be shown. Returning libraryFragment."
+                "Attempted to index a fragment that shouldn't be shown."
             )
 
-            return libraryFragment
+            return fragmentAt(position)
         }
     }
 }

app/src/main/java/org/oxycblt/auxio/library/LibraryFragment.kt

@@ -10,14 +10,20 @@ import androidx.fragment.app.activityViewModels
 import androidx.navigation.fragment.findNavController
 import org.oxycblt.auxio.MainFragmentDirections
 import org.oxycblt.auxio.databinding.FragmentLibraryBinding
+import org.oxycblt.auxio.library.adapters.AlbumAdapter
 import org.oxycblt.auxio.library.adapters.ArtistAdapter
 import org.oxycblt.auxio.music.MusicViewModel
+import org.oxycblt.auxio.music.models.Album
 import org.oxycblt.auxio.music.models.Artist
 import org.oxycblt.auxio.recycler.ClickListener
+import org.oxycblt.auxio.theme.SHOW_ARTISTS
 import org.oxycblt.auxio.theme.applyDivider
 
 class LibraryFragment : Fragment() {
 
+    // FIXME: Temp value, remove when there are actual preferences
+    private val libraryMode = SHOW_ARTISTS
+
     private val musicModel: MusicViewModel by activityViewModels()
     private val libraryModel: LibraryViewModel by activityViewModels()
 
@@ -28,13 +34,22 @@ class LibraryFragment : Fragment() {
     ): View? {
         val binding = FragmentLibraryBinding.inflate(inflater)
 
-        binding.libraryRecycler.adapter = ArtistAdapter(
+        binding.libraryRecycler.adapter = when (libraryMode) {
+            SHOW_ARTISTS -> ArtistAdapter(
                 musicModel.artists.value!!,
                 ClickListener {
                     navToArtist(it)
                 }
             )
 
+            else -> AlbumAdapter(
+                musicModel.albums.value!!,
+                ClickListener {
+                    navToAlbum(it)
+                }
+            )
+        }
+
         binding.libraryRecycler.applyDivider()
         binding.libraryRecycler.setHasFixedSize(true)
 
@@ -50,12 +65,26 @@ class LibraryFragment : Fragment() {
     }
 
     private fun navToArtist(artist: Artist) {
-        // Don't navigate if an item already has been selected.
+        // Dont navigate if an item has already been selected
         if (!libraryModel.isAlreadyNavigating) {
             libraryModel.isAlreadyNavigating = true
 
             findNavController().navigate(
-                MainFragmentDirections.actionShowArtist(artist.id)
+                MainFragmentDirections.actionShowArtist(
+                    artist.id
+                )
+            )
+        }
+    }
+
+    private fun navToAlbum(album: Album) {
+        if (!libraryModel.isAlreadyNavigating) {
+            libraryModel.isAlreadyNavigating = true
+
+            findNavController().navigate(
+                MainFragmentDirections.actionShowAlbum(
+                    album.id
+                )
             )
         }
     }

app/src/main/java/org/oxycblt/auxio/loading/LoadingFragment.kt

@@ -74,8 +74,6 @@ class LoadingFragment : Fragment(R.layout.fragment_loading) {
             }
 
         // Force an error screen if the permissions are denied or the prompt needs to be shown.
-        // This should be in MusicRepository, but the response comes faster than the view creation
-        // itself and therefore causes the error screen to not appear.
         if (checkPerms()) {
             onNoPerms()
         } else {

app/src/main/java/org/oxycblt/auxio/theme/PrefConstants.kt

@@ -0,0 +1,6 @@
+package org.oxycblt.auxio.theme
+
+// Preference Constants
+const val SHOW_ARTISTS = 0
+const val SHOW_ALBUMS = 1
+const val SHOW_GENRES = 2

app/src/main/res/navigation/nav_main.xml

@@ -33,6 +33,9 @@
             app:popExitAnim="@anim/fragment_fade_exit"
             app:destination="@id/artist_detail_fragment"
             app:launchSingleTop="true" />
+        <action
+            android:id="@+id/action_show_album"
+            app:destination="@id/album_detail_fragment" />
     </fragment>
     <fragment
         android:id="@+id/artist_detail_fragment"