WIP: Tweak configuration code to be more coherent and usable

It would still love to use reflection, but I am not learning that, at
least now.

QuickPlay/Configuration.cs

@@ -3,12 +3,14 @@ using System.IO;
 
 namespace QuickPlay
 {
+#pragma warning disable CS0659 // This is basically an almost-singleton, which will never be put in any hash table.
     /// <summary>
     /// Application (global) configuration data class
     /// </summary>
     [Serializable]
     sealed class AppConfiguration
     {
+        // XXX: All the fields need to be checked in overriden Equals method
         public readonly string playerConfigUrl;
 
         public static AppConfiguration loadSavedConfiguration()
@@ -25,7 +27,26 @@ namespace QuickPlay
             var newConfig = AppConfiguration.loadSavedConfiguration();
             if (this != newConfig) throw new InvalidDataException("Saved configuration is different from the supplied one.");
         }
+
+        public PlayerConfiguration GetPlayerConfig()
+        {
+            // TODO: decide sensibly
+            var cfgProvider = new CurlConfigurationProvider(playerConfigUrl);
+            return cfgProvider.GetConfiguration();
+        }
+
+        // We want to compare by values.
+        // It might actually be a bit more sensible to compare serialized
+        // versions of the objects, but that seems unneccessarily hard.
+        public override bool Equals(object obj)
+        {
+            var other = (AppConfiguration)obj;
+            // These fields have to match...
+            if (this.playerConfigUrl != other.playerConfigUrl) return false;
+            return true;
+        }
     }
+#pragma warning restore CS0659
 
     /// <summary>
     /// Configuration of the player.
@@ -38,6 +59,11 @@ namespace QuickPlay
         {
             return null; // FIXME: Implement
         }
+
+        public IPlayer GetPlayer()
+        {
+            throw new NotImplementedException();
+        }
     }
 
     interface IPlayerConfigurationProvider
@@ -45,9 +71,14 @@ namespace QuickPlay
         PlayerConfiguration GetConfiguration();
     }
 
-    sealed class NetworkConfigurationProvider : IPlayerConfigurationProvider
+    sealed class CurlConfigurationProvider : IPlayerConfigurationProvider
     {
-        PlayerConfiguration IPlayerConfigurationProvider.GetConfiguration()
+        readonly string configUrl;
+        public CurlConfigurationProvider(string url)
+        {
+            configUrl = url;
+        }
+        public PlayerConfiguration GetConfiguration()
         {
             throw new NotImplementedException();
         }

QuickPlay/MainActivity.cs

@@ -10,6 +10,7 @@ using Android.Widget;
 //using Google.Android.Material.Snackbar;
 using Android.Support.V7.App;
 using Toolbar = Android.Support.V7.Widget.Toolbar;
+using GridLayoutManager = Android.Support.V7.Widget.GridLayoutManager;
 
 using System.Net;
 //using MpcNET;
@@ -25,7 +26,8 @@ namespace QuickPlay
     public class MainActivity : AppCompatActivity
     {
         private AppConfiguration appConfig;
-        private List<PlayerConfiguration> playerConfigs;
+        private Android.Support.V7.Widget.RecyclerView recyclerView;
+        private IPlayer currentPlayer;
 
         protected override void OnCreate(Bundle savedInstanceState)
         {
@@ -33,8 +35,8 @@ namespace QuickPlay
 
 
             // App initialization
-            //appConfig = AppConfiguration.loadSavedConfiguration();
-            //playerConfigs = acquirePlayerConfigs();
+            appConfig = AppConfiguration.loadSavedConfiguration();
+            currentPlayer = appConfig.GetPlayerConfig().GetPlayer();
 
             // UI initialization
             SetContentView(Resource.Layout.activity_main);
@@ -47,6 +49,19 @@ namespace QuickPlay
             // Hide the play bar by default
             var bar = FindViewById(Resource.Id.currentSongBar);
             bar.Visibility = ViewStates.Invisible;
+
+            // Initialize the RecyclerView
+            // Since this is rather complicated, it is in a separate method
+            InitializeRecyclerView();
+        }
+
+        private void InitializeRecyclerView()
+        {
+            recyclerView = FindViewById<Android.Support.V7.Widget.RecyclerView>(Resource.Id.recyclerView1);
+            var adapter = new SongRecyclerAdapter(currentPlayer);
+            recyclerView.SetAdapter(adapter);
+            var layoutManager = new GridLayoutManager(this, 2, GridLayoutManager.Vertical, false);
+            recyclerView.SetLayoutManager(layoutManager);
         }
 
         public override bool OnCreateOptionsMenu(IMenu menu)
@@ -72,16 +87,5 @@ namespace QuickPlay
             }
             return base.OnOptionsItemSelected(item);
         }
-
-        List<PlayerConfiguration> acquirePlayerConfigs()
-        {
-            // FIXME: Bad! We have IPlayerConfigurationProviders
-            ///var url = appConfig.playerConfigUrl;
-            // TODO: Learn cURL and get configs :-)
-
-            return null;
-            throw new NotImplementedException();
-        }
-
     }
 }

QuickPlay/QuickPlay.csproj

@@ -72,6 +72,7 @@
     <Compile Include="MainActivity.cs" />
     <Compile Include="Resources\Resource.designer.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SongRecycler.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Resources\AboutResources.txt" />

QuickPlay/SongRecycler.cs

@@ -0,0 +1,50 @@
+using Android.App;
+using Android.Content;
+using Android.OS;
+using Android.Runtime;
+using Android.Support.V7.Widget;
+using Android.Views;
+using Android.Widget;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace QuickPlay
+{
+    class SongRecyclerAdapter : Android.Support.V7.Widget.RecyclerView.Adapter
+    {
+        public SongRecyclerAdapter(IPlayer player)
+        {
+            throw new NotImplementedException();
+        }
+        public override int ItemCount
+        {
+            get
+            {
+                throw new NotImplementedException();
+            }
+        }
+        public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
+        {
+            throw new NotImplementedException();
+        }
+        public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
+        {
+            throw new NotImplementedException();
+        }
+
+        public SongRecyclerAdapter(int TODO)
+        {
+
+        }
+
+    }
+    class SongRecyclerViewHolder : Android.Support.V7.Widget.RecyclerView.ViewHolder
+    {
+        public SongRecyclerViewHolder(View itemView) : base(itemView)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}