Google Assistant App Actions for AntennaPod (#4417)

app/src/main/AndroidManifest.xml

@@ -84,6 +84,28 @@
             android:windowSoftInputMode="stateAlwaysHidden"
             android:launchMode="singleTask"
             android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data
+                    android:host="antennapod.org"
+                    android:pathPrefix="/deeplink/main"
+                    android:scheme="https" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data
+                    android:host="antennapod.org"
+                    android:pathPrefix="/deeplink/search"
+                    android:scheme="https" />
+            </intent-filter>
         </activity>
 
         <activity
@@ -312,6 +334,10 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/provider_paths"/>
         </provider>
+
+        <meta-data
+            android:name="com.google.android.actions"
+            android:resource="@xml/actions" />
     </application>
 
 </manifest>

app/src/main/java/de/danoeh/antennapod/activity/MainActivity.java

@@ -6,6 +6,7 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.media.AudioManager;
+import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
@@ -51,6 +52,7 @@ import de.danoeh.antennapod.fragment.FeedItemlistFragment;
 import de.danoeh.antennapod.fragment.NavDrawerFragment;
 import de.danoeh.antennapod.fragment.PlaybackHistoryFragment;
 import de.danoeh.antennapod.fragment.QueueFragment;
+import de.danoeh.antennapod.fragment.SearchFragment;
 import de.danoeh.antennapod.fragment.SubscriptionFragment;
 import de.danoeh.antennapod.fragment.TransitionEffect;
 import de.danoeh.antennapod.preferences.PreferenceUpgrader;
@@ -511,6 +513,8 @@ public class MainActivity extends CastEnabledActivity {
         } else if (intent.getBooleanExtra(EXTRA_OPEN_PLAYER, false)) {
             sheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
             bottomSheetCallback.onSlide(null, 1.0f);
+        } else if (Intent.ACTION_VIEW.equals(intent.getAction())) {
+            handleDeeplink(intent.getData());
         }
         // to avoid handling the intent twice when the configuration changes
         setIntent(new Intent(MainActivity.this, MainActivity.class));
@@ -520,6 +524,7 @@ public class MainActivity extends CastEnabledActivity {
     protected void onNewIntent(Intent intent) {
         super.onNewIntent(intent);
         setIntent(intent);
+        handleNavIntent();
     }
 
     public Snackbar showSnackbarAbovePlayer(CharSequence text, int duration) {
@@ -540,6 +545,59 @@ public class MainActivity extends CastEnabledActivity {
         return showSnackbarAbovePlayer(getResources().getText(text), duration);
     }
 
+    /**
+     * Handles the deep link incoming via App Actions.
+     * Performs an in-app search or opens the relevant feature of the app
+     * depending on the query.
+     *
+     * @param uri incoming deep link
+     */
+    private void handleDeeplink(Uri uri) {
+        if (uri == null || uri.getPath() == null) {
+            return;
+        }
+        Log.d(TAG, "Handling deeplink: " + uri.toString());
+        switch (uri.getPath()) {
+            case "/deeplink/search":
+                String query = uri.getQueryParameter("query");
+                if (query == null) {
+                    return;
+                }
+
+                this.loadChildFragment(SearchFragment.newInstance(query));
+                break;
+            case "/deeplink/main":
+                String feature = uri.getQueryParameter("page");
+                if (feature == null) {
+                    return;
+                }
+                switch (feature) {
+                    case "DOWNLOADS":
+                        loadFragment(DownloadsFragment.TAG, null);
+                        break;
+                    case "HISTORY":
+                        loadFragment(PlaybackHistoryFragment.TAG, null);
+                        break;
+                    case "EPISODES":
+                        loadFragment(EpisodesFragment.TAG, null);
+                        break;
+                    case "QUEUE":
+                        loadFragment(QueueFragment.TAG, null);
+                        break;
+                    case "SUBSCRIPTIONS":
+                        loadFragment(SubscriptionFragment.TAG, null);
+                        break;
+                    default:
+                        showSnackbarAbovePlayer(getString(R.string.app_action_not_found, feature),
+                                Snackbar.LENGTH_LONG);
+                        return;
+                }
+                break;
+            default:
+                break;
+        }
+    }
+  
     //Hardware keyboard support
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
@@ -592,5 +650,4 @@ public class MainActivity extends CastEnabledActivity {
         }
         return super.onKeyUp(keyCode, event);
     }
-
 }

app/src/main/res/xml/actions.xml

@@ -0,0 +1,25 @@
+<?xml version ="1.0" encoding ="utf-8"?>
+<actions>
+    <action intentName="actions.intent.OPEN_APP_FEATURE">
+        <fulfillment urlTemplate="https://antennapod.org/deeplink/main{?page}">
+            <parameter-mapping intentParameter="feature" urlParameter="page" />
+        </fulfillment>
+        <parameter name="feature">
+            <entity-set-reference entitySetId="featureEntitySet" />
+        </parameter>
+    </action>
+
+    <action intentName="actions.intent.GET_THING">
+        <fulfillment urlTemplate="https://antennapod.org/deeplink/search{?query}">
+            <parameter-mapping intentParameter="thing.name" urlParameter="query"/>
+        </fulfillment>
+    </action>
+
+    <entity-set entitySetId="featureEntitySet">
+        <entity identifier="QUEUE" name="@string/queue_label" />
+        <entity identifier="EPISODES" name="@string/episodes_label" />
+        <entity identifier="DOWNLOADS" name="@string/downloads_label" />
+        <entity identifier="SUBSCRIPTIONS" name="@string/subscriptions_label" />
+        <entity identifier="HISTORY" name="@string/playback_history_label" />
+    </entity-set>
+</actions>

core/src/main/res/values/strings.xml

@@ -11,6 +11,7 @@
     <string name="statistics_label">Statistics</string>
     <string name="add_feed_label">Add Podcast</string>
     <string name="episodes_label">Episodes</string>
+    <string name="queue_label">Queue</string>
     <string name="all_episodes_short_label">All</string>
     <string name="new_episodes_label">New</string>
     <string name="favorite_episodes_label">Favorites</string>
@@ -32,6 +33,9 @@
     <string name="download_statistics_label">Downloads</string>
     <string name="notification_pref_fragment">Notifications</string>
 
+    <!-- Google Assistant -->
+    <string name="app_action_not_found">\"%1$s\" not found</string>
+
     <!-- Statistics fragment -->
     <string name="total_time_listened_to_podcasts">Total time of episodes played:</string>
     <string name="statistics_details_dialog">%1$d out of %2$d episodes started.\n\nPlayed %3$s out of %4$s.</string>
@@ -367,7 +371,6 @@
     <string name="storage_pref">Storage</string>
     <string name="storage_sum">Episode auto delete, Import, Export</string>
     <string name="project_pref">Project</string>
-    <string name="queue_label">Queue</string>
     <string name="synchronization_pref">Synchronization</string>
     <string name="synchronization_sum">Synchronize with other devices using gpodder.net</string>
     <string name="automation">Automation</string>