Use product flavours to enable builds without proprietary libraries

This commit uses build flavours to provide two different builds: A
'floss' build and a 'google' build.

- The 'floss' build builds a basic version of the app with no
  dependencies on proprietary libraries.
- The 'google' build adds Chromecast support and a few other extras
  provided by Google Play Services

1 files changed, 61 insertions, 0 deletions

diff --git a/app/src/google/java/github/daneren2005/dsub/util/compat/GoogleCompat.java b/app/src/google/java/github/daneren2005/dsub/util/compat/GoogleCompat.java
new file mode 100644
index 00000000..63992b0f
--- /dev/null
+++ b/app/src/google/java/github/daneren2005/dsub/util/compat/GoogleCompat.java
@@ -0,0 +1,61 @@
+package github.daneren2005.dsub.util.compat;
+
+import android.content.Context;
+import android.support.v7.media.MediaRouter;
+import android.util.Log;
+
+import com.google.android.gms.cast.CastDevice;
+import com.google.android.gms.cast.CastMediaControlIntent;
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.GoogleApiAvailability;
+import com.google.android.gms.security.ProviderInstaller;
+
+import github.daneren2005.dsub.service.ChromeCastController;
+import github.daneren2005.dsub.service.DownloadService;
+import github.daneren2005.dsub.service.RemoteController;
+import github.daneren2005.dsub.util.EnvironmentVariables;
+
+public final class GoogleCompat {
+
+    private static final String TAG = GoogleCompat.class.getSimpleName();
+
+    public static boolean playServicesAvailable(Context context){
+        int result = GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(context);
+        if(result != ConnectionResult.SUCCESS){
+            Log.w(TAG, "No play services, failed with result: " + result);
+            return false;
+        }
+        return true;
+    }
+
+    public static void installProvider(Context context) throws Exception{
+        ProviderInstaller.installIfNeeded(context);
+    }
+
+    public static boolean castAvailable() {
+        if (EnvironmentVariables.CAST_APPLICATION_ID == null) {
+            Log.w(TAG, "CAST_APPLICATION_ID not provided");
+            return false;
+        }
+        try {
+            Class.forName("com.google.android.gms.cast.CastDevice");
+        } catch (Exception ex) {
+            Log.w(TAG, "Chromecast library not available");
+            return false;
+        }
+        return true;
+    }
+
+    public static RemoteController getController(DownloadService downloadService, MediaRouter.RouteInfo info) {
+        CastDevice device = CastDevice.getFromBundle(info.getExtras());
+        if(device != null) {
+            return new ChromeCastController(downloadService, device);
+        } else {
+            return null;
+        }
+    }
+
+    public static String getCastControlCategory() {
+        return CastMediaControlIntent.categoryForCast(EnvironmentVariables.CAST_APPLICATION_ID);
+    }
+}