feat(lib): create responses to text messages

example_full/lib/domain/app_service.dart

@@ -314,20 +314,14 @@ extension CommunicationChannelExtension on AppService {
 }
 
 extension MessagingExtension on AppService {
-  void sendMessage(String message) {
-    try {
-      if (connectedDevice == null) return;
-      _nearbyService.send(
-        OutgoingNearbyMessage(
-          content: NearbyMessageTextContent(value: message),
-          receiver: connectedDevice!.info,
-        ),
-      );
-    } catch (e) {
-      if (kDebugMode) {
-        print(e);
-      }
-    }
+  void sendTextRequest(String message) {
+    if (connectedDevice == null) return;
+    _nearbyService.send(
+      OutgoingNearbyMessage(
+        content: NearbyMessageTextRequest.create(value: message),
+        receiver: connectedDevice!.info,
+      ),
+    );
   }
 
   void sendFilesRequest(List<String> paths) {
@@ -344,15 +338,24 @@ extension MessagingExtension on AppService {
     );
   }
 
-  void sendFilesResponse(String requestId, {required bool response}) {
+  void sendTextResponse(String requestId) {
     if (connectedDevice == null) return;
+
     _nearbyService.send(
       OutgoingNearbyMessage(
         receiver: connectedDevice!.info,
-        content: NearbyMessageFilesResponse(
-          id: requestId,
-          response: response,
-        ),
+        content: NearbyMessageTextResponse(id: requestId),
+      ),
+    );
+  }
+
+  void sendFilesResponse(String requestId, {required bool response}) {
+    if (connectedDevice == null) return;
+    print('send');
+    _nearbyService.send(
+      OutgoingNearbyMessage(
+        receiver: connectedDevice!.info,
+        content: NearbyMessageFilesResponse(id: requestId, isAccepted: response),
       ),
     );
   }

example_full/lib/presentation/listener/files_listener.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+import 'package:nearby_service/nearby_service.dart';
+import 'package:nearby_service_example_full/uikit/uikit.dart';
+
+class FilesListener {
+  FilesListener._();
+
+  static void call(BuildContext context, ReceivedNearbyFilesPack pack) {
+    final senderSubtitle = 'From ${pack.sender.displayName} '
+        '(ID: ${pack.sender.id})';
+    AppShackBar.show(
+      Scaffold.of(context).context,
+      '${pack.files.length} files saved! \n${pack.files.map((e) => e.name).join('\n')}',
+      subtitle: senderSubtitle,
+    );
+  }
+}

example_full/lib/presentation/listener/messages_listener.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:nearby_service/nearby_service.dart';
+import 'package:nearby_service_example_full/domain/app_service.dart';
+import 'package:nearby_service_example_full/uikit/uikit.dart';
+import 'package:provider/provider.dart';
+
+class MessagesListener {
+  MessagesListener._();
+
+  static void call(BuildContext context, ReceivedNearbyMessage message) {
+    final senderSubtitle = 'From ${message.sender.displayName} '
+        '(ID: ${message.sender.id})';
+    message.content.byType(
+      onTextRequest: (textRequest) {
+        AppShackBar.show(
+          Scaffold.of(context).context,
+          '${textRequest.value} (Message ID=${textRequest.id})',
+          subtitle: senderSubtitle,
+        )?.closed.whenComplete(() {
+          // mark as read
+          context.read<AppService>().sendTextResponse(textRequest.id);
+        });
+      },
+      onTextResponse: (textResponse) {
+        AppShackBar.show(
+          Scaffold.of(context).context,
+          'Your message with ID=${textResponse.id} was delivered to ${message.sender.displayName}',
+        );
+      },
+      onFilesRequest: (filesRequest) {
+        ActionDialog.show(
+          context,
+          title: 'Request to send ${filesRequest.files.length} files',
+          subtitle: senderSubtitle,
+        ).then(
+          // accept or dismiss the files request
+          (isAccepted) => context.read<AppService>().sendFilesResponse(
+                filesRequest.id,
+                response: isAccepted ?? false,
+              ),
+        );
+      },
+      onFilesResponse: (filesResponse) {
+        AppShackBar.show(
+          Scaffold.of(context).context,
+          filesResponse.isAccepted
+              ? 'Request is accepted!'
+              : 'Request was denied :(',
+          subtitle: senderSubtitle,
+          actionType:
+              filesResponse.isAccepted ? ActionType.idle : ActionType.warning,
+        );
+      },
+    );
+  }
+}

example_full/lib/presentation/view/communication_view.dart

@@ -69,7 +69,7 @@ class _CommunicationViewState extends State<CommunicationView> {
                   Flexible(
                     child: ActionButton(
                       title: 'Send',
-                      onTap: () => service.sendMessage(message),
+                      onTap: () => service.sendTextRequest(message),
                     ),
                   ),
                 ],

example_full/lib/presentation/view/connected_view.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:nearby_service/nearby_service.dart';
 import 'package:nearby_service_example_full/domain/app_service.dart';
+import 'package:nearby_service_example_full/presentation/listener/files_listener.dart';
+import 'package:nearby_service_example_full/presentation/listener/messages_listener.dart';
 import 'package:nearby_service_example_full/uikit/uikit.dart';
 import 'package:provider/provider.dart';
 
@@ -48,8 +50,14 @@ class ConnectedView extends StatelessWidget {
                       ActionButton(
                         title: 'Start communicate',
                         onTap: () => service.startCommunicationChannel(
-                          listener: (event) => _listener(context, event),
-                          onFilesSaved: (files) => _onFileSaved(context, files),
+                          listener: (event) => MessagesListener.call(
+                            context,
+                            event,
+                          ),
+                          onFilesSaved: (files) => FilesListener.call(
+                            context,
+                            files,
+                          ),
                         ),
                       )
                     else
@@ -64,50 +72,4 @@ class ConnectedView extends StatelessWidget {
       },
     );
   }
-
-  void _listener(BuildContext context, ReceivedNearbyMessage message) {
-    final senderSubtitle = 'From ${message.sender.displayName} '
-        '(ID: ${message.sender.id})';
-    message.content.byType(
-      onText: (content) {
-        AppShackBar.show(
-          Scaffold.of(context).context,
-          content.value,
-          subtitle: senderSubtitle,
-        );
-      },
-      onFilesRequest: (content) {
-        ActionDialog.show(
-          context,
-          title: 'Request to send ${content.files.length} files',
-          subtitle: senderSubtitle,
-        ).then((value) {
-          if (value is bool) {
-            context.read<AppService>().sendFilesResponse(
-                  content.id,
-                  response: value,
-                );
-          }
-        });
-      },
-      onFilesResponse: (content) {
-        AppShackBar.show(
-          Scaffold.of(context).context,
-          content.response ? 'Request is accepted!' : 'Request was denied :(',
-          subtitle: senderSubtitle,
-          actionType: content.response ? ActionType.idle : ActionType.warning,
-        );
-      },
-    );
-  }
-
-  void _onFileSaved(BuildContext context, ReceivedNearbyFilesPack pack) {
-    final senderSubtitle = 'From ${pack.sender.displayName} '
-        '(ID: ${pack.sender.id})';
-    AppShackBar.show(
-      Scaffold.of(context).context,
-      '${pack.files.length} files saved! \n${pack.files.map((e) => e.name).join('\n')}',
-      subtitle: senderSubtitle,
-    );
-  }
 }

example_full/lib/uikit/app_snack_bar.dart

@@ -15,12 +15,12 @@ class AppShackBar {
       SnackBar(
         content: RichText(
           text: TextSpan(
-            text: '$title \n',
+            text: title,
             style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
             children: [
               if (subtitle != null)
                 TextSpan(
-                  text: subtitle,
+                  text: '\n$subtitle',
                   style: const TextStyle(
                     fontWeight: FontWeight.normal,
                     fontSize: 14,