Rewrite the notification code in Kotlin

example/lib/main.dart

@@ -175,6 +175,18 @@ class MyHomePage extends StatelessWidget {
               },
               child: const Text('Show messaging notification'),
             ),
+            ElevatedButton(
+              onPressed: () async {
+                print(await MoxplatformPlugin.platform.getPersistentDataPath());
+              },
+              child: const Text('Get data directory'),
+            ),
+            ElevatedButton(
+              onPressed: () async {
+                print(await MoxplatformPlugin.platform.getCacheDataPath());
+              },
+              child: const Text('Get cache directory'),
+            ),
           ],
         ),
       ),

packages/moxplatform/lib/src/plugin.dart

@@ -2,8 +2,8 @@ import 'package:moxplatform_platform_interface/moxplatform_platform_interface.da
 
 class MoxplatformPlugin {
   static IsolateHandler get handler => MoxplatformInterface.handler;
-  static MediaScannerImplementation get media => MoxplatformInterface.media;
   static CryptographyImplementation get crypto => MoxplatformInterface.crypto;
   static ContactsImplementation get contacts => MoxplatformInterface.contacts;
   static NotificationsImplementation get notifications => MoxplatformInterface.notifications;
+  static PlatformImplementation get platform => MoxplatformInterface.platform;
 }

packages/moxplatform_android/android/src/main/java/me/polynom/moxplatform_android/Api.java

@@ -21,7 +21,7 @@ import java.util.Map;
 
 /** Generated class from Pigeon. */
 @SuppressWarnings({"unused", "unchecked", "CodeBlock2Expr", "RedundantSuppression", "serial"})
-public class Notifications {
+public class Api {
 
   /** Error class for passing custom error details to Flutter via a thrown PlatformException. */
   public static class FlutterError extends RuntimeException {
@@ -416,10 +416,10 @@ public class Notifications {
     }
   }
 
-  private static class NotificationsImplementationApiCodec extends StandardMessageCodec {
+  private static class MoxplatformApiCodec extends StandardMessageCodec {
-    public static final NotificationsImplementationApiCodec INSTANCE = new NotificationsImplementationApiCodec();
+    public static final MoxplatformApiCodec INSTANCE = new MoxplatformApiCodec();
 
-    private NotificationsImplementationApiCodec() {}
+    private MoxplatformApiCodec() {}
 
     @Override
     protected Object readValueOfType(byte type, @NonNull ByteBuffer buffer) {
@@ -453,22 +453,28 @@ public class Notifications {
   }
 
   /** Generated interface from Pigeon that represents a handler of messages from Flutter. */
-  public interface NotificationsImplementationApi {
+  public interface MoxplatformApi {
 
     void createNotificationChannel(@NonNull String title, @NonNull String id, @NonNull Boolean urgent);
 
     void showMessagingNotification(@NonNull MessagingNotification notification);
 
-    /** The codec used by NotificationsImplementationApi. */
+    @NonNull 
+    String getPersistentDataPath();
+
+    @NonNull 
+    String getCacheDataPath();
+
+    /** The codec used by MoxplatformApi. */
     static @NonNull MessageCodec<Object> getCodec() {
-      return NotificationsImplementationApiCodec.INSTANCE;
+      return MoxplatformApiCodec.INSTANCE;
     }
-    /**Sets up an instance of `NotificationsImplementationApi` to handle messages through the `binaryMessenger`. */
+    /**Sets up an instance of `MoxplatformApi` to handle messages through the `binaryMessenger`. */
-    static void setup(@NonNull BinaryMessenger binaryMessenger, @Nullable NotificationsImplementationApi api) {
+    static void setup(@NonNull BinaryMessenger binaryMessenger, @Nullable MoxplatformApi api) {
       {
         BasicMessageChannel<Object> channel =
             new BasicMessageChannel<>(
-                binaryMessenger, "dev.flutter.pigeon.moxplatform_platform_interface.NotificationsImplementationApi.createNotificationChannel", getCodec());
+                binaryMessenger, "dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.createNotificationChannel", getCodec());
         if (api != null) {
           channel.setMessageHandler(
               (message, reply) -> {
@@ -494,7 +500,7 @@ public class Notifications {
       {
         BasicMessageChannel<Object> channel =
             new BasicMessageChannel<>(
-                binaryMessenger, "dev.flutter.pigeon.moxplatform_platform_interface.NotificationsImplementationApi.showMessagingNotification", getCodec());
+                binaryMessenger, "dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.showMessagingNotification", getCodec());
         if (api != null) {
           channel.setMessageHandler(
               (message, reply) -> {
@@ -505,6 +511,50 @@ public class Notifications {
                   api.showMessagingNotification(notificationArg);
                   wrapped.add(0, null);
                 }
+ catch (Throwable exception) {
+                  ArrayList<Object> wrappedError = wrapError(exception);
+                  wrapped = wrappedError;
+                }
+                reply.reply(wrapped);
+              });
+        } else {
+          channel.setMessageHandler(null);
+        }
+      }
+      {
+        BasicMessageChannel<Object> channel =
+            new BasicMessageChannel<>(
+                binaryMessenger, "dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.getPersistentDataPath", getCodec());
+        if (api != null) {
+          channel.setMessageHandler(
+              (message, reply) -> {
+                ArrayList<Object> wrapped = new ArrayList<Object>();
+                try {
+                  String output = api.getPersistentDataPath();
+                  wrapped.add(0, output);
+                }
+ catch (Throwable exception) {
+                  ArrayList<Object> wrappedError = wrapError(exception);
+                  wrapped = wrappedError;
+                }
+                reply.reply(wrapped);
+              });
+        } else {
+          channel.setMessageHandler(null);
+        }
+      }
+      {
+        BasicMessageChannel<Object> channel =
+            new BasicMessageChannel<>(
+                binaryMessenger, "dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.getCacheDataPath", getCodec());
+        if (api != null) {
+          channel.setMessageHandler(
+              (message, reply) -> {
+                ArrayList<Object> wrapped = new ArrayList<Object>();
+                try {
+                  String output = api.getCacheDataPath();
+                  wrapped.add(0, output);
+                }
  catch (Throwable exception) {
                   ArrayList<Object> wrappedError = wrapError(exception);
                   wrapped = wrappedError;

packages/moxplatform_android/android/src/main/java/me/polynom/moxplatform_android/MoxplatformAndroidPlugin.java

@@ -1,36 +1,24 @@
 package me.polynom.moxplatform_android;
 
 import static androidx.core.content.ContextCompat.getSystemService;
-import static me.polynom.moxplatform_android.ConstantsKt.MARK_AS_READ_ACTION;
-import static me.polynom.moxplatform_android.ConstantsKt.MARK_AS_READ_ID_KEY;
-import static me.polynom.moxplatform_android.ConstantsKt.REPLY_TEXT_KEY;
 import static me.polynom.moxplatform_android.RecordSentMessageKt.recordSentMessage;
 import static me.polynom.moxplatform_android.CryptoKt.*;
-import me.polynom.moxplatform_android.Notifications.*;
+import me.polynom.moxplatform_android.Api.*;
 
 import android.app.ActivityManager;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
-import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
-import android.graphics.BitmapFactory;
-import android.net.Uri;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
-import androidx.core.app.RemoteInput;
-import androidx.core.app.NotificationCompat;
-import androidx.core.app.NotificationManagerCompat;
-import androidx.core.app.Person;
 import androidx.core.content.ContextCompat;
-import androidx.core.graphics.drawable.IconCompat;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 
-import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -46,7 +34,7 @@ import io.flutter.plugin.common.JSONMethodCodec;
 import kotlin.Unit;
 import kotlin.jvm.functions.Function1;
 
-public class MoxplatformAndroidPlugin extends BroadcastReceiver implements FlutterPlugin, MethodCallHandler, ServiceAware, NotificationsImplementationApi {
+public class MoxplatformAndroidPlugin extends BroadcastReceiver implements FlutterPlugin, MethodCallHandler, ServiceAware, MoxplatformApi {
   public static final String entrypointKey = "entrypoint_handle";
   public static final String extraDataKey = "extra_data";
   private static final String autoStartAtBootKey = "auto_start_at_boot";
@@ -60,8 +48,6 @@ public class MoxplatformAndroidPlugin extends BroadcastReceiver implements Flutt
   private MethodChannel channel;
   private Context context;
 
-  private FileProvider provider = new FileProvider();
-
   public MoxplatformAndroidPlugin() {
     _instances.add(this);
   }
@@ -75,7 +61,7 @@ public class MoxplatformAndroidPlugin extends BroadcastReceiver implements Flutt
     LocalBroadcastManager localBroadcastManager = LocalBroadcastManager.getInstance(this.context);
     localBroadcastManager.registerReceiver(this, new IntentFilter(methodChannelKey));
 
-    NotificationsImplementationApi.setup(flutterPluginBinding.getBinaryMessenger(), this);
+    MoxplatformApi.setup(flutterPluginBinding.getBinaryMessenger(), this);
 
     Log.d(TAG, "Attached to engine");
   }
@@ -292,62 +278,18 @@ public class MoxplatformAndroidPlugin extends BroadcastReceiver implements Flutt
 
   @Override
   public void showMessagingNotification(@NonNull MessagingNotification notification) {
-    // Create a reply button
+    NotificationsKt.showMessagingNotification(context, notification);
-    // TODO: i18n
-    RemoteInput remoteInput = new RemoteInput.Builder(REPLY_TEXT_KEY).setLabel("Reply").build();
-    final Intent replyIntent = new Intent(context, NotificationReceiver.class);
-    final PendingIntent replyPendingIntent = PendingIntent.getBroadcast(context.getApplicationContext(), 0, replyIntent, PendingIntent.FLAG_UPDATE_CURRENT);
-    // TODO: i18n
-    // TODO: Correct icon
-    final NotificationCompat.Action action = new NotificationCompat.Action.Builder(R.drawable.ic_service_icon, "Reply", replyPendingIntent)
-            .addRemoteInput(remoteInput)
-            .build();
-
-    // Create the "mark as read" button
-    final Intent markAsReadIntent = new Intent(context, NotificationReceiver.class);
-    markAsReadIntent.setAction(MARK_AS_READ_ACTION);
-    markAsReadIntent.putExtra(MARK_AS_READ_ID_KEY, notification.getId());
-    // TODO: Replace with something more useful
-    markAsReadIntent.putExtra("title", notification.getTitle());
-    final PendingIntent markAsReadPendingIntent = PendingIntent.getBroadcast(context.getApplicationContext(), 0, readIntent,PendingIntent.FLAG_CANCEL_CURRENT);
-
-    final NotificationCompat.MessagingStyle style = new NotificationCompat.MessagingStyle("Me")
-            .setConversationTitle(notification.getTitle());
-    for (final NotificationMessage message : notification.getMessages()) {
-      // Build the sender of the message
-      final Person.Builder personBuilder = new Person.Builder()
-              .setName(message.getSender())
-              .setKey(message.getJid());
-      if (message.getAvatarPath() != null) {
-        final IconCompat icon = IconCompat.createWithAdaptiveBitmap(
-                BitmapFactory.decodeFile(message.getAvatarPath())
-        );
-        personBuilder.setIcon(icon);
   }
 
-      // Build the message
+  @NonNull
-      final String content = message.getContent().getBody() == null ? "" : message.getContent().getBody();
+  @Override
-      final NotificationCompat.MessagingStyle.Message msg = new NotificationCompat.MessagingStyle.Message(
+  public String getPersistentDataPath() {
-              content,
+    return context.getFilesDir().getPath();
-              message.getTimestamp(),
-              personBuilder.build()
-      );
-      // Turn the image path to a content Uri, if a media file was specified
-      if (message.getContent().getMime() != null && message.getContent().getPath() != null) {
-        final Uri fileUri = androidx.core.content.FileProvider.getUriForFile(context, "me.polynom.moxplatform_android.fileprovider", new File(message.getContent().getPath()));
-        msg.setData(message.getContent().getMime(), fileUri);
   }
 
-      style.addMessage(msg);
+  @NonNull
-    }
+  @Override
-
+  public String getCacheDataPath() {
-    // Build the notification and send it
+    return context.getCacheDir().getPath();
-    final NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context, notification.getChannelId())
-            .setStyle(style)
-            // TODO: This is wrong
-            .setSmallIcon(R.drawable.ic_service_icon)
-            .addAction(action)
-            .addAction(R.drawable.ic_service_icon, "Mark as read", markAsReadPendingIntent);
-    NotificationManagerCompat.from(context).notify(notification.getId().intValue(), notificationBuilder.build());
   }
 }

packages/moxplatform_android/android/src/main/java/me/polynom/moxplatform_android/Notifications.kt

@@ -0,0 +1,115 @@
+package me.polynom.moxplatform_android
+
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.graphics.BitmapFactory
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.app.Person
+import androidx.core.app.RemoteInput
+import androidx.core.content.FileProvider
+import androidx.core.graphics.drawable.IconCompat
+import java.io.File
+
+/// Show a messaging style notification described by @notification.
+fun showMessagingNotification(context: Context, notification: Api.MessagingNotification) {
+    // Build the actions
+    // -> Reply action
+    val remoteInput = RemoteInput.Builder(REPLY_TEXT_KEY).apply {
+        // TODO: i18n
+        setLabel("Reply")
+    }.build()
+    val replyIntent = Intent(context, NotificationReceiver::class.java)
+    val replyPendingIntent = PendingIntent.getBroadcast(
+        context.applicationContext,
+        0,
+        replyIntent,
+        PendingIntent.FLAG_UPDATE_CURRENT,
+    )
+    val replyAction = NotificationCompat.Action.Builder(
+        // TODO: Wrong icon?
+        R.drawable.ic_service_icon,
+        // TODO: i18n
+        "Reply",
+        replyPendingIntent,
+    ).apply {
+        addRemoteInput(remoteInput)
+    }.build()
+
+    // -> Mark as read action
+    val markAsReadIntent = Intent(context, NotificationReceiver::class.java).apply {
+        action = MARK_AS_READ_ACTION
+        // TODO: Put the JID here
+        putExtra("title", notification.title)
+    }
+    val markAsReadPendingIntent = PendingIntent.getBroadcast(
+        context.applicationContext,
+        0,
+        markAsReadIntent,
+        0,
+    )
+
+    // Build the notification
+    // TODO: Use a person
+    // TODO: i18n
+    val style = NotificationCompat.MessagingStyle("Me");
+    for (message in notification.messages) {
+        // Build the sender
+        val sender = Person.Builder().apply {
+            setName(message.sender)
+            setKey(message.jid)
+
+            // Set the avatar, if available
+            if (message.avatarPath != null) {
+                setIcon(
+                    IconCompat.createWithAdaptiveBitmap(
+                        BitmapFactory.decodeFile(message.avatarPath),
+                    ),
+                )
+            }
+        }.build()
+
+        // Build the message
+        val body = message.content.body ?: ""
+        val msg = NotificationCompat.MessagingStyle.Message(
+            body,
+            message.timestamp,
+            sender,
+        )
+        // If we got an image, turn it into a content URI and set it
+        if (message.content.mime != null && message.content.path != null) {
+            val fileUri = FileProvider.getUriForFile(
+                context,
+                "me.polynom.moxplatform_android.fileprovider",
+                File(message.content.path),
+            )
+            msg.setData(message.content.mime, fileUri)
+        }
+
+        // Append the message
+        style.addMessage(msg)
+    }
+
+    // Assemble the notification
+    val finalNotification = NotificationCompat.Builder(context, notification.channelId).apply {
+        setStyle(style)
+        // TODO: I think this is wrong
+        setSmallIcon(R.drawable.ic_service_icon)
+
+        addAction(replyAction)
+        addAction(
+            // TODO: Wrong icon
+            R.drawable.ic_service_icon,
+            // TODO: i18n
+            "Mark as read",
+            markAsReadPendingIntent,
+        )
+    }.build()
+
+    // Post the notification
+    NotificationManagerCompat.from(context).notify(
+        notification.id.toInt(),
+        finalNotification,
+    )
+}

packages/moxplatform_android/android/src/main/res/xml/file_paths.xml

@@ -1,4 +1,7 @@
 <paths xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- For testing -->
    <cache-path name="file_picker" path="file_picker/"/>
+
+   <!-- Moxxy -->
+   <files-path name="media" path="media/" />
 </paths>

packages/moxplatform_android/lib/moxplatform_android.dart

@@ -1,6 +1,5 @@
 library moxplatform_android;
 
 export 'src/isolate_android.dart';
-export 'src/media_android.dart';
 export 'src/plugin_android.dart';
 export 'src/service_android.dart';

packages/moxplatform_android/lib/src/media_android.dart

@@ -1,9 +0,0 @@
-import 'package:media_scanner/media_scanner.dart';
-import 'package:moxplatform_platform_interface/moxplatform_platform_interface.dart';
-
-class AndroidMediaScannerImplementation extends MediaScannerImplementation {
-  @override
-  void scanFile(String path) {
-    MediaScanner.loadMedia(path: path);
-  }
-}

packages/moxplatform_android/lib/src/notifications_android.dart

@@ -1,7 +1,7 @@
 import 'package:moxplatform_platform_interface/moxplatform_platform_interface.dart';
 
 class AndroidNotificationsImplementation extends NotificationsImplementation {
-  final NotificationsImplementationApi _api = NotificationsImplementationApi();
+  final MoxplatformApi _api = MoxplatformApi();
 
 
   @override

packages/moxplatform_android/lib/src/platform_android.dart

@@ -0,0 +1,13 @@
+import 'package:moxplatform_platform_interface/moxplatform_platform_interface.dart';
+
+class AndroidPlatformImplementation extends PlatformImplementation {
+  @override
+  Future<String> getCacheDataPath() {
+    return MoxplatformInterface.api.getCacheDataPath();
+  }
+
+  @override
+  Future<String> getPersistentDataPath() {
+    return MoxplatformInterface.api.getPersistentDataPath();
+  }
+}

packages/moxplatform_android/lib/src/plugin_android.dart

@@ -1,8 +1,8 @@
 import 'package:moxplatform_android/src/contacts_android.dart';
 import 'package:moxplatform_android/src/crypto_android.dart';
 import 'package:moxplatform_android/src/isolate_android.dart';
-import 'package:moxplatform_android/src/media_android.dart';
 import 'package:moxplatform_android/src/notifications_android.dart';
+import 'package:moxplatform_android/src/platform_android.dart';
 import 'package:moxplatform_platform_interface/moxplatform_platform_interface.dart';
 
 class MoxplatformAndroidPlugin extends MoxplatformInterface {
@@ -12,8 +12,8 @@ class MoxplatformAndroidPlugin extends MoxplatformInterface {
     MoxplatformInterface.contacts = AndroidContactsImplementation();
     MoxplatformInterface.crypto = AndroidCryptographyImplementation();
     MoxplatformInterface.handler = AndroidIsolateHandler();
-    MoxplatformInterface.media = AndroidMediaScannerImplementation();
     MoxplatformInterface.notifications = AndroidNotificationsImplementation();
+    MoxplatformInterface.platform = AndroidPlatformImplementation();
   }
 
   @override

packages/moxplatform_android/pubspec.yaml

@@ -22,7 +22,6 @@ dependencies:
     sdk: flutter
   get_it: ^7.2.0
   logging: ^1.0.2
-  media_scanner: ^2.0.0
   meta: ^1.7.0
   moxlib:
     hosted: https://git.polynom.me/api/packages/Moxxy/pub

packages/moxplatform_platform_interface/lib/moxplatform_platform_interface.dart

@@ -1,5 +1,6 @@
 library moxplatform_platform_interface;
 
+export 'src/api.g.dart';
 export 'src/contacts.dart';
 export 'src/contacts_stub.dart';
 export 'src/crypto.dart';
@@ -7,9 +8,8 @@ export 'src/crypto_stub.dart';
 export 'src/interface.dart';
 export 'src/isolate.dart';
 export 'src/isolate_stub.dart';
-export 'src/media.dart';
-export 'src/media_stub.dart';
 export 'src/notifications.dart';
-export 'src/notifications.g.dart';
 export 'src/notifications_stub.dart';
+export 'src/platform.dart';
+export 'src/platform_stub.dart';
 export 'src/service.dart';

packages/moxplatform_platform_interface/lib/src/api.g.dart

@@ -127,8 +127,8 @@ class MessagingNotification {
   }
 }
 
-class _NotificationsImplementationApiCodec extends StandardMessageCodec {
+class _MoxplatformApiCodec extends StandardMessageCodec {
-  const _NotificationsImplementationApiCodec();
+  const _MoxplatformApiCodec();
   @override
   void writeValue(WriteBuffer buffer, Object? value) {
     if (value is MessagingNotification) {
@@ -160,19 +160,19 @@ class _NotificationsImplementationApiCodec extends StandardMessageCodec {
   }
 }
 
-class NotificationsImplementationApi {
+class MoxplatformApi {
-  /// Constructor for [NotificationsImplementationApi].  The [binaryMessenger] named argument is
+  /// Constructor for [MoxplatformApi].  The [binaryMessenger] named argument is
   /// available for dependency injection.  If it is left null, the default
   /// BinaryMessenger will be used which routes to the host platform.
-  NotificationsImplementationApi({BinaryMessenger? binaryMessenger})
+  MoxplatformApi({BinaryMessenger? binaryMessenger})
       : _binaryMessenger = binaryMessenger;
   final BinaryMessenger? _binaryMessenger;
 
-  static const MessageCodec<Object?> codec = _NotificationsImplementationApiCodec();
+  static const MessageCodec<Object?> codec = _MoxplatformApiCodec();
 
   Future<void> createNotificationChannel(String arg_title, String arg_id, bool arg_urgent) async {
     final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
-        'dev.flutter.pigeon.moxplatform_platform_interface.NotificationsImplementationApi.createNotificationChannel', codec,
+        'dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.createNotificationChannel', codec,
         binaryMessenger: _binaryMessenger);
     final List<Object?>? replyList =
         await channel.send(<Object?>[arg_title, arg_id, arg_urgent]) as List<Object?>?;
@@ -194,7 +194,7 @@ class NotificationsImplementationApi {
 
   Future<void> showMessagingNotification(MessagingNotification arg_notification) async {
     final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
-        'dev.flutter.pigeon.moxplatform_platform_interface.NotificationsImplementationApi.showMessagingNotification', codec,
+        'dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.showMessagingNotification', codec,
         binaryMessenger: _binaryMessenger);
     final List<Object?>? replyList =
         await channel.send(<Object?>[arg_notification]) as List<Object?>?;
@@ -213,4 +213,58 @@ class NotificationsImplementationApi {
       return;
     }
   }
+
+  Future<String> getPersistentDataPath() async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.getPersistentDataPath', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(null) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else if (replyList[0] == null) {
+      throw PlatformException(
+        code: 'null-error',
+        message: 'Host platform returned null value for non-null return value.',
+      );
+    } else {
+      return (replyList[0] as String?)!;
+    }
+  }
+
+  Future<String> getCacheDataPath() async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.moxplatform_platform_interface.MoxplatformApi.getCacheDataPath', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(null) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else if (replyList[0] == null) {
+      throw PlatformException(
+        code: 'null-error',
+        message: 'Host platform returned null value for non-null return value.',
+      );
+    } else {
+      return (replyList[0] as String?)!;
+    }
+  }
 }

packages/moxplatform_platform_interface/lib/src/interface.dart

@@ -1,13 +1,14 @@
+import 'package:moxplatform_platform_interface/src/api.g.dart';
 import 'package:moxplatform_platform_interface/src/contacts.dart';
 import 'package:moxplatform_platform_interface/src/contacts_stub.dart';
 import 'package:moxplatform_platform_interface/src/crypto.dart';
 import 'package:moxplatform_platform_interface/src/crypto_stub.dart';
 import 'package:moxplatform_platform_interface/src/isolate.dart';
 import 'package:moxplatform_platform_interface/src/isolate_stub.dart';
-import 'package:moxplatform_platform_interface/src/media.dart';
-import 'package:moxplatform_platform_interface/src/media_stub.dart';
 import 'package:moxplatform_platform_interface/src/notifications.dart';
 import 'package:moxplatform_platform_interface/src/notifications_stub.dart';
+import 'package:moxplatform_platform_interface/src/platform.dart';
+import 'package:moxplatform_platform_interface/src/platform_stub.dart';
 import 'package:plugin_platform_interface/plugin_platform_interface.dart';
 
 abstract class MoxplatformInterface extends PlatformInterface {
@@ -15,11 +16,13 @@ abstract class MoxplatformInterface extends PlatformInterface {
 
   static final Object _token = Object();
 
+  static MoxplatformApi api = MoxplatformApi();
+
   static IsolateHandler handler = StubIsolateHandler();
-  static MediaScannerImplementation media = StubMediaScannerImplementation();
   static CryptographyImplementation crypto = StubCryptographyImplementation();
   static ContactsImplementation contacts = StubContactsImplementation();
   static NotificationsImplementation notifications = StubNotificationsImplementation();
+  static PlatformImplementation platform = StubPlatformImplementation();
 
   /// Return the current platform name.
   Future<String?> getPlatformName();

packages/moxplatform_platform_interface/lib/src/media.dart

@@ -1,6 +0,0 @@
-/// Wrapper around platform-specific media scanning
-// ignore: one_member_abstracts
-abstract class MediaScannerImplementation {
-  /// Let the platform-specific media scanner scan the file at [path].
-  void scanFile(String path);
-}

packages/moxplatform_platform_interface/lib/src/media_stub.dart

@@ -1,6 +0,0 @@
-import 'package:moxplatform_platform_interface/src/media.dart';
-
-class StubMediaScannerImplementation extends MediaScannerImplementation {
-  @override
-  void scanFile(String path) {}
-}

packages/moxplatform_platform_interface/lib/src/notifications.dart

@@ -1,4 +1,4 @@
-import 'package:moxplatform_platform_interface/src/notifications.g.dart';
+import 'package:moxplatform_platform_interface/src/api.g.dart';
 
 abstract class NotificationsImplementation {
   Future<void> createNotificationChannel(String title, String id, bool urgent);

packages/moxplatform_platform_interface/lib/src/notifications_stub.dart

@@ -1,4 +1,4 @@
-import 'package:moxplatform_platform_interface/src/notifications.g.dart';
+import 'package:moxplatform_platform_interface/src/api.g.dart';
 import 'package:moxplatform_platform_interface/src/notifications.dart';
 
 class StubNotificationsImplementation extends NotificationsImplementation {

packages/moxplatform_platform_interface/lib/src/platform.dart

@@ -0,0 +1,7 @@
+abstract class PlatformImplementation {
+  /// Returns the path where persistent data should be stored.
+  Future<String> getPersistentDataPath();
+
+  /// Returns the path where cache data should be stored.
+  Future<String> getCacheDataPath();
+}

packages/moxplatform_platform_interface/lib/src/platform_stub.dart

@@ -0,0 +1,9 @@
+import 'package:moxplatform_platform_interface/src/platform.dart';
+
+class StubPlatformImplementation extends PlatformImplementation {
+  /// Returns the path where persistent data should be stored.
+  Future<String> getPersistentDataPath() async => "";
+
+  /// Returns the path where cache data should be stored.
+  Future<String> getCacheDataPath() async => "";
+}

pigeons/notifications.dart

@@ -2,12 +2,12 @@ import 'package:pigeon/pigeon.dart';
 
 @ConfigurePigeon(
   PigeonOptions(
-    dartOut: 'packages/moxplatform_platform_interface/lib/src/notifications.g.dart',
+    dartOut: 'packages/moxplatform_platform_interface/lib/src/api.g.dart',
     //kotlinOut: 'packages/moxplatform_android/android/src/main/java/me/polynom/moxplatform_android/Notifications.g.kt',
     //kotlinOptions: KotlinOptions(
     //  package: 'me.polynom.moxplatform_android',
     //),
-    javaOut: 'packages/moxplatform_android/android/src/main/java/me/polynom/moxplatform_android/Notifications.java',
+    javaOut: 'packages/moxplatform_android/android/src/main/java/me/polynom/moxplatform_android/Api.java',
     javaOptions: JavaOptions(
       package: 'me.polynom.moxplatform_android',
     ),
@@ -70,8 +70,12 @@ class MessagingNotification {
 }
 
 @HostApi()
-abstract class NotificationsImplementationApi {
+abstract class MoxplatformApi {
   void createNotificationChannel(String title, String id, bool urgent);
 
   void showMessagingNotification(MessagingNotification notification);
+
+  String getPersistentDataPath();
+
+  String getCacheDataPath();
 }