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) {
+  void sendTextRequest(String message) {
-    try {
+    if (connectedDevice == null) return;
-      if (connectedDevice == null) return;
+    _nearbyService.send(
-      _nearbyService.send(
+      OutgoingNearbyMessage(
-        OutgoingNearbyMessage(
+        content: NearbyMessageTextRequest.create(value: message),
-          content: NearbyMessageTextContent(value: message),
+        receiver: connectedDevice!.info,
-          receiver: connectedDevice!.info,
+      ),
-        ),
+    );
-      );
-    } catch (e) {
-      if (kDebugMode) {
-        print(e);
-      }
-    }
   }
 
   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(
+        content: NearbyMessageTextResponse(id: requestId),
-          id: requestId,
+      ),
-          response: response,
+    );
-        ),
+  }
+
+  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),
+                          listener: (event) => MessagesListener.call(
-                          onFilesSaved: (files) => _onFileSaved(context, files),
+                            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,

ios/Classes/Models/NearbyMessageContent.swift

@@ -10,8 +10,9 @@ import MultipeerConnectivity
 
 class NearbyMessageContent {
     
-    init(type: MessageContentType) {
+    init(id: String, type: MessageContentType) {
         self.type = type
+        self.id = id
     }
     
     let type: MessageContentType
@@ -19,8 +20,10 @@ class NearbyMessageContent {
     static func typedFromJson(json: [String: Any]) -> NearbyMessageContent? {
         if let typeString: String = json["type"] as? String {
             let type = MessageContentType.fromString(value: typeString)
-            if (type == MessageContentType.text) {
+            if (type == MessageContentType.textRequest) {
-                return NearbyMessageTextContent.fromJson(json: json)
+                return NearbyMessageTextRequest.fromJson(json: json)
+            }  else if (type == MessageContentType.textResponse) {
+                return NearbyMessageTextResponse.fromJson(json: json)
             } else if (type == MessageContentType.filesRequest) {
                 return NearbyMessageFilesRequest.fromJson(json: json)
             } else if (type == MessageContentType.filesResponse) {
@@ -30,21 +33,30 @@ class NearbyMessageContent {
         return nil;
     }
     
+    static func fromJsonRaw(type: MessageContentType, json: [String: Any]) -> NearbyMessageContent? {
+        if let id: String = json["id"] as? String {
+            return NearbyMessageContent(id: id, type: type)
+        }
+        return nil;
+    }
     
     func toJson() ->  [String : Any] {
-        return ["type": type.name]
+        return ["type": type.name, "id": id]
     }
+    
+    let id: String
 }
 
-class NearbyMessageTextContent : NearbyMessageContent {
+class NearbyMessageTextRequest : NearbyMessageContent {
-    init(value: String) {
+    init(id: String, value: String) {
         self.value = value
-        super.init(type: MessageContentType.text)
+        super.init(id: id, type: MessageContentType.textRequest)
     }
     
-    static func fromJson(json:[String: Any]) -> NearbyMessageTextContent? {
+    static func fromJson(json:[String: Any]) -> NearbyMessageTextRequest? {
-        if let message: String = json["value"] as? String {
+        if let value: String = json["value"] as? String,
-            return NearbyMessageTextContent(value: message)
+           let content = NearbyMessageContent.fromJsonRaw(type: MessageContentType.textRequest, json:json) {
+            return NearbyMessageTextRequest(id: content.id, value: value)
         }
         return nil;
     }
@@ -56,42 +68,33 @@ class NearbyMessageTextContent : NearbyMessageContent {
     let value: String
 }
 
-class NearbyMessageFilesContent : NearbyMessageContent {
+class NearbyMessageTextResponse :NearbyMessageContent {
     
-    init(id: String, type: MessageContentType) {
+     init(id: String) {
-        self.id = id
+         super.init(id: id, type: MessageContentType.textResponse)
-        super.init(type: type)
     }
     
-    static func fromJsonRaw(type: MessageContentType, json: [String: Any]) -> NearbyMessageFilesContent? {
+    static func fromJson( json: [String: Any]) -> NearbyMessageTextResponse? {
-        if let id: String = json["id"] as? String{
+        let content = NearbyMessageContent.fromJsonRaw(type: MessageContentType.textResponse, json: json)
-            return NearbyMessageFilesContent(id: id, type: type)
+        if let requireContent = content {
+            return NearbyMessageTextResponse(id: requireContent.id)
         }
-        return nil;
+        return nil
     }
-    
-    override func toJson() ->  [String : Any] {
-        return [
-            "id": id,
-        ].merging( super.toJson()) { (current, _) in current}
-    }
-    
-    
-    let id: String
 }
 
-class NearbyMessageFilesRequest : NearbyMessageFilesContent {
+class NearbyMessageFilesRequest : NearbyMessageContent {
     init(files: Array<String>, id: String) {
         self.files = files
         super.init(id: id, type: MessageContentType.filesRequest)
     }
     static func fromJson(json: [String: Any]) -> NearbyMessageFilesRequest? {
-        let message = NearbyMessageFilesContent.fromJsonRaw(type: MessageContentType.filesRequest, json: json)
+        let content = NearbyMessageContent.fromJsonRaw(type: MessageContentType.filesRequest, json: json)
         if let filesObjects: Array = json["files"] as? Array<Dictionary<String, AnyObject>> {
             let files : [String]? = filesObjects.map({ $0["path"] as? String }).compactMap({$0})
-            if let requireMessage = message {
+            if let requireContent = content {
                 if let requireFiles = files {
-                    return NearbyMessageFilesRequest(files: requireFiles, id: requireMessage.id)
+                    return NearbyMessageFilesRequest(files: requireFiles, id: requireContent.id)
                 }
             }
         }
@@ -106,22 +109,22 @@ class NearbyMessageFilesRequest : NearbyMessageFilesContent {
     }
 }
 
-class NearbyMessageFilesResponse : NearbyMessageFilesContent {
+class NearbyMessageFilesResponse : NearbyMessageContent {
     init(id: String, response: Bool) {
         self.response = response
         super.init(id: id, type: MessageContentType.filesResponse)
     }
     static func fromJson( json: [String: Any]) -> NearbyMessageFilesResponse? {
-        let message = NearbyMessageFilesContent.fromJsonRaw(type: MessageContentType.filesResponse, json: json)
+        let message = NearbyMessageContent.fromJsonRaw(type: MessageContentType.filesResponse, json: json)
         if let requireMessage = message,
-           let response = json["response"] as? Bool {
+           let response = json["isAccepted"] as? Bool {
             return NearbyMessageFilesResponse(id: requireMessage.id, response: response)
         }
         return nil
     }
     override func toJson() ->  [String : Any] {
         return [
-            "response": response
+            "isAccepted": response
         ].merging( super.toJson()) { (current, _) in current}
     }
     
@@ -130,25 +133,29 @@ class NearbyMessageFilesResponse : NearbyMessageFilesContent {
 
 
 enum MessageContentType {
-    case text
+    case textRequest
+    case textResponse
     case filesRequest
     case filesResponse
     
     static func fromString(value: String) -> MessageContentType {
-        if (value == text.name) {
+        if (value == textRequest.name) {
-            return text
+            return textRequest
-        } else if (value == filesRequest.name) {
+        } else if (value == textResponse.name) {
+            return textResponse
+        }  else if (value == filesRequest.name) {
             return filesRequest
         } else if (value == filesResponse.name) {
             return filesResponse
         } else {
-            return text
+            return textRequest
         }
     }
     
     var name : String {
         switch self {
-        case .text: return "text"
+        case .textRequest: return "textRequest"
+        case .textResponse: return "textResponse"
         case .filesRequest: return "filesRequest"
         case .filesResponse: return "filesResponse"
         }

ios/Classes/NearbyNotificationReceiver.swift

@@ -13,11 +13,15 @@ extension NearbyServicePlugin {
     @objc func onMessageReceived(notification: Notification) {
         DispatchQueue.main.async {
             if let userInfo = NearbyUserInfo.fromDictionary(userInfo: notification.userInfo) {
+                print(userInfo)
                 if let message = NearbyMessage.fromUserInfo(userInfo: userInfo) {
+                    print(message)
                     if message.content is NearbyMessageFilesResponse {
+                        print(message.content)
                         let response = message.content as! NearbyMessageFilesResponse
                         let cachedRequest = NearbyRequestsStore.instance.find(for: response.id)
                         if (response.response && cachedRequest != nil) {
+                            print("send")
                             self.manager.sendFiles(
                                 id: cachedRequest!.id,
                                 paths: cachedRequest!.files,

lib/src/base/nearby_message_content_base.dart

@@ -1,4 +1,5 @@
 import 'package:nearby_service/nearby_service.dart';
+import 'package:nearby_service/src/utils/random.dart';
 
 ///
 /// Abstraction for the message content.
@@ -6,11 +7,14 @@ import 'package:nearby_service/nearby_service.dart';
 /// determine, what type of content is it.
 ///
 abstract base class NearbyMessageContent {
-  const NearbyMessageContent();
+  const NearbyMessageContent({required this.id});
+
+  NearbyMessageContent.create()
+      : id = RandomUtils.instance.nextInt(1000000, 9999999).toString();
 
   ///
   /// Contains the conditional logic of creating [NearbyMessageFilesRequest],
-  /// [NearbyMessageFilesResponse] or [NearbyMessageTextContent]
+  /// [NearbyMessageFilesResponse] or [NearbyMessageTextRequest]
   /// by `type` field of [json].
   ///
   static C fromJson<C extends NearbyMessageContent>(
@@ -20,8 +24,10 @@ abstract base class NearbyMessageContent {
       final type = NearbyMessageContentType.values.firstWhere(
         (e) => e.name == json?['type'],
       );
-      if (type.isText) {
+      if (type.isTextRequest) {
-        return NearbyMessageTextContent.fromJson(json) as C;
+        return NearbyMessageTextRequest.fromJson(json) as C;
+      } else if (type.isTextResponse) {
+        return NearbyMessageTextResponse.fromJson(json) as C;
       } else if (type.isFilesRequest) {
         return NearbyMessageFilesRequest.fromJson(json) as C;
       } else if (type.isFilesResponse) {
@@ -34,9 +40,12 @@ abstract base class NearbyMessageContent {
     }
   }
 
+  final String id;
+
   NearbyMessageContentType get _type {
     final type = byType(
-      onText: (_) => NearbyMessageContentType.text,
+      onTextRequest: (_) => NearbyMessageContentType.textRequest,
+      onTextResponse: (_) => NearbyMessageContentType.textResponse,
       onFilesRequest: (_) => NearbyMessageContentType.filesRequest,
       onFilesResponse: (_) => NearbyMessageContentType.filesResponse,
     );
@@ -51,11 +60,11 @@ abstract base class NearbyMessageContent {
   ///
   /// Check for the content if it is valid for sending or receiving.
   ///
-  bool get isValid;
+  bool get isValid => id.isNotEmpty;
 
   ///
-  /// * The [onText] callback returns this instance of [NearbyMessageContent],
+  /// * The [onTextRequest] callback returns this instance of [NearbyMessageContent],
-  /// cast as [NearbyMessageTextContent] if is a text.
+  /// cast as [NearbyMessageTextRequest] if is a text.
   ///
   /// * The [onFilesRequest] callback returns this instance of [NearbyMessageContent],
   /// cast as [NearbyMessageFilesRequest] if is a files pack request.
@@ -64,12 +73,15 @@ abstract base class NearbyMessageContent {
   /// cast as [NearbyMessageFilesResponse] if is a files pack response.
   ///
   T? byType<T>({
-    T Function(NearbyMessageTextContent)? onText,
+    T Function(NearbyMessageTextRequest)? onTextRequest,
+    T Function(NearbyMessageTextResponse)? onTextResponse,
     T Function(NearbyMessageFilesRequest)? onFilesRequest,
     T Function(NearbyMessageFilesResponse)? onFilesResponse,
   }) {
-    if (this is NearbyMessageTextContent && onText != null) {
+    if (this is NearbyMessageTextRequest && onTextRequest != null) {
-      return onText(this as NearbyMessageTextContent);
+      return onTextRequest(this as NearbyMessageTextRequest);
+    } else if (this is NearbyMessageTextResponse && onTextResponse != null) {
+      return onTextResponse(this as NearbyMessageTextResponse);
     } else if (this is NearbyMessageFilesRequest && onFilesRequest != null) {
       return onFilesRequest(this as NearbyMessageFilesRequest);
     } else if (this is NearbyMessageFilesResponse && onFilesResponse != null) {
@@ -82,6 +94,6 @@ abstract base class NearbyMessageContent {
   /// Gets [Map] from [NearbyMessageContent]
   ///
   Map<String, dynamic> toJson() {
-    return {'type': _type.name};
+    return {'type': _type.name, 'id': id};
   }
 }

lib/src/model/nearby_message_content.dart

@@ -1,20 +1,25 @@
 import 'package:nearby_service/nearby_service.dart';
-import 'package:nearby_service/src/utils/random.dart';
 
 ///
 /// Nearby message Text content.
 ///
 /// Contains [value] - the message to be sent or received.
 ///
-final class NearbyMessageTextContent extends NearbyMessageContent {
+final class NearbyMessageTextRequest extends NearbyMessageContent {
-  const NearbyMessageTextContent({required this.value});
+  const NearbyMessageTextRequest._({
+    required this.value,
+    required super.id,
+  });
+
+  NearbyMessageTextRequest.create({required this.value}) : super.create();
 
   ///
-  /// Gets [NearbyMessageTextContent] from [json]
+  /// Gets [NearbyMessageTextRequest] from [json]
   ///
-  factory NearbyMessageTextContent.fromJson(Map<String, dynamic>? json) {
+  factory NearbyMessageTextRequest.fromJson(Map<String, dynamic>? json) {
-    return NearbyMessageTextContent(
+    return NearbyMessageTextRequest._(
-      value: json?['value'] ?? '',
+      id: json?['id'],
+      value: json?['value'],
     );
   }
 
@@ -29,7 +34,7 @@ final class NearbyMessageTextContent extends NearbyMessageContent {
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
-      other is NearbyMessageTextContent &&
+      other is NearbyMessageTextRequest &&
           runtimeType == other.runtimeType &&
           value == other.value;
 
@@ -38,7 +43,7 @@ final class NearbyMessageTextContent extends NearbyMessageContent {
 
   @override
   String toString() {
-    return 'NearbyMessageTextContent{value: $value}';
+    return 'NearbyMessageTextRequest{id: $id, value: $value}';
   }
 
   @override
@@ -50,55 +55,24 @@ final class NearbyMessageTextContent extends NearbyMessageContent {
   }
 }
 
-///
+final class NearbyMessageTextResponse extends NearbyMessageContent {
-/// Sealed class for files content in NearbyMessage.
+  const NearbyMessageTextResponse({required super.id});
-///
-sealed class NearbyMessageFilesContent extends NearbyMessageContent {
-  ///
-  /// Here type is [NearbyMessageContentType.filesResponse] or
-  /// [NearbyMessageContentType.filesRequest]
-  ///
-  /// Also [NearbyMessageFilesContent] contains [id] of the files pack.
-  ///
-  const NearbyMessageFilesContent({required this.id});
 
-  ///
+  factory NearbyMessageTextResponse.fromJson(Map<String, dynamic>? json) {
-  /// ID of this files pack
+    return NearbyMessageTextResponse(id: json?['id']);
-  ///
-  final String id;
-
-  @override
-  Map<String, dynamic> toJson() {
-    return {
-      'id': id,
-      ...super.toJson(),
-    };
   }
 
-  @override
-  bool operator ==(Object other) =>
-      identical(this, other) ||
-      other is NearbyMessageFilesContent &&
-          runtimeType == other.runtimeType &&
-          id == other.id;
-
-  @override
-  int get hashCode => id.hashCode;
-
   @override
   String toString() {
-    return 'NearbyMessageFilesContent{id: $id}';
+    return 'NearbyMessageTextResponse{id: $id}';
   }
-
-  @override
-  bool get isValid => id.isNotEmpty;
 }
 
 ///
 /// Nearby message File Request. Used for files sending requests.
 /// Contains info about the [files].
 ///
-final class NearbyMessageFilesRequest extends NearbyMessageFilesContent {
+final class NearbyMessageFilesRequest extends NearbyMessageContent {
   ///
   /// Adds a [NearbyFileInfo] list to [id] to identify files.
   ///
@@ -111,17 +85,14 @@ final class NearbyMessageFilesRequest extends NearbyMessageFilesContent {
   /// Basic constructor with [files] to be sent or received.
   /// Generates [id] in constructor.
   ///
-  NearbyMessageFilesRequest.create({required this.files})
+  NearbyMessageFilesRequest.create({required this.files}) : super.create();
-      : super(
-          id: RandomUtils.instance.nextInt(1000000, 9999999).toString(),
-        );
 
   ///
   /// Gets [NearbyMessageFilesRequest] from [json].
   ///
   factory NearbyMessageFilesRequest.fromJson(Map<String, dynamic>? json) {
     return NearbyMessageFilesRequest._(
-      id: json?['id'] ?? '',
+      id: json?['id'],
       files: [
         ...?(json?['files'] as List?)?.map(
           (e) => NearbyFileInfo.fromJson(e),
@@ -171,14 +142,14 @@ final class NearbyMessageFilesRequest extends NearbyMessageFilesContent {
 ///
 /// Nearby message File Response. Used for file sending responses.
 ///
-final class NearbyMessageFilesResponse extends NearbyMessageFilesContent {
+final class NearbyMessageFilesResponse extends NearbyMessageContent {
   ///
   /// Used to send a response to a previously received request.
   /// Provide [id] from [NearbyMessageFilesRequest].
   ///
   NearbyMessageFilesResponse({
     required super.id,
-    required this.response,
+    required this.isAccepted,
   });
 
   ///
@@ -187,25 +158,25 @@ final class NearbyMessageFilesResponse extends NearbyMessageFilesContent {
   factory NearbyMessageFilesResponse.fromJson(Map<String, dynamic>? json) {
     return NearbyMessageFilesResponse(
       id: json?['id'] ?? '',
-      response: json?['response'] ?? false,
+      isAccepted: json?['isAccepted'] ?? false,
     );
   }
 
   ///
   /// The main response to the received [NearbyMessageFilesRequest].
   ///
-  final bool response;
+  final bool isAccepted;
 
   @override
   Map<String, dynamic> toJson() {
     return {
-      'response': response,
+      'isAccepted': isAccepted,
       ...super.toJson(),
     };
   }
 
   @override
   String toString() {
-    return 'NearbyMessageFileResponse{response: $response, id: $id}';
+    return 'NearbyMessageFileResponse{response: $isAccepted, id: $id}';
   }
 }

lib/src/model/nearby_message_content_type.dart

@@ -1,21 +1,29 @@
 ///
 /// Type of the message.
 ///
-/// If [text], it will be a text message.
+/// If [textRequest], it will be a text message.
 /// If [filesRequest], it will be a files pack request.
 /// After accepting the request,
 /// user can get files bytes stream from the connected device.
 ///
 enum NearbyMessageContentType {
-  text,
+  textRequest,
+  textResponse,
   filesRequest,
   filesResponse;
 
   ///
-  /// Checks if this is [NearbyMessageContentType.text]
+  /// Checks if this is [NearbyMessageContentType.textRequest]
   ///
-  bool get isText {
+  bool get isTextRequest {
-    return this == NearbyMessageContentType.text;
+    return this == NearbyMessageContentType.textRequest;
+  }
+
+  ///
+  /// Checks if this is [NearbyMessageContentType.textResponse]
+  ///
+  bool get isTextResponse {
+    return this == NearbyMessageContentType.textResponse;
   }
 
   ///

lib/src/platforms/android/socket_service/file_sockets_manager.dart

@@ -34,10 +34,15 @@ class FileSocketsManager {
   }
 
   Future<void> handleFileMessageContent(
-    NearbyMessageFilesContent content, {
+    NearbyMessageContent content, {
     required NearbyDeviceInfo? sender,
     required bool isReceived,
   }) async {
+    assert(
+      content is NearbyMessageFilesResponse ||
+          content is NearbyMessageFilesRequest,
+      "Provide NearbyMessageFilesResponse or NearbyMessageFilesRequest to handleFileMessageContent()",
+    );
     if (sender != null) {
       _sender = sender;
       Logger.debug('Sender was set to $_sender');
@@ -47,7 +52,7 @@ class FileSocketsManager {
     final isRequest = content is NearbyMessageFilesRequest;
 
     final isPositiveResponse =
-        content is NearbyMessageFilesResponse && content.response;
+        content is NearbyMessageFilesResponse && content.isAccepted;
 
     if (isRequest) {
       _cachedFilesRequest = content;

lib/src/platforms/android/socket_service/nearby_socket_service.dart

@@ -98,7 +98,7 @@ class NearbySocketService {
               },
             ),
           );
-          _handleMessage(message);
+          _handleFilesMessage(message);
         }
         return true;
       }
@@ -203,28 +203,27 @@ class NearbySocketService {
           ?.where((e) => e != null)
           .map(MessagesStreamMapper.toMessage)
           .cast<ReceivedNearbyMessage>()
-          .map((e) => MessagesStreamMapper.replaceId(e, _connectedDeviceId!))
+          .map((e) => MessagesStreamMapper.replaceId(e, _connectedDeviceId))
           .listen(
-        (message) async {
+            (message) async {
-          try {
+              try {
-            _handleMessage(message);
+                _handleFilesMessage(message);
-            socketListener.onData(message);
+                socketListener.onData(message);
-          } catch (e) {
+              } catch (e) {
-            Logger.error(e);
+                Logger.error(e);
-          }
+              }
-          // }
+            },
-        },
+            onDone: () {
-        onDone: () {
+              state.value = CommunicationChannelState.notConnected;
-          state.value = CommunicationChannelState.notConnected;
+              socketListener.onDone?.call();
-          socketListener.onDone?.call();
+            },
-        },
+            onError: (e, s) {
-        onError: (e, s) {
+              Logger.error(e);
-          Logger.error(e);
+              state.value = CommunicationChannelState.notConnected;
-          state.value = CommunicationChannelState.notConnected;
+              socketListener.onError?.call(e, s);
-          socketListener.onError?.call(e, s);
+            },
-        },
+            cancelOnError: socketListener.cancelOnError,
-        cancelOnError: socketListener.cancelOnError,
+          );
-      );
     }
     if (_messagesSubscription != null) {
       state.value = CommunicationChannelState.connected;
@@ -235,10 +234,11 @@ class NearbySocketService {
     }
   }
 
-  void _handleMessage(NearbyMessage message) {
+  void _handleFilesMessage(NearbyMessage message) {
-    if (message.content is NearbyMessageFilesContent) {
+    if (message.content is NearbyMessageFilesRequest ||
+        message.content is NearbyMessageFilesResponse) {
       _fileSocketsManager.handleFileMessageContent(
-        message.content as NearbyMessageFilesContent,
+        message.content,
         isReceived: message is ReceivedNearbyMessage,
         sender: message is ReceivedNearbyMessage ? message.sender : null,
       );

lib/src/platforms/ios/nearby_ios_service.dart

@@ -186,19 +186,23 @@ class NearbyIOSService extends NearbyService {
       cancelOnError: eventListener.cancelOnError,
     );
     _resourcesSubscription = NearbyServiceIOSPlatform.instance.resourcesStream
+        .map((event) {
+          print(event);
+          return event;
+        })
         .map(ResourcesStreamMapper.toFilesPack)
         .where((event) => event != null)
         .cast<ReceivedNearbyFilesPack>()
         .listen(
-      (e) => filesListener?.onData.call(e),
+          (e) => filesListener?.onData.call(e),
-      onDone: filesListener?.onDone,
+          onDone: filesListener?.onDone,
-      onError: (e, s) {
+          onError: (e, s) {
-        Logger.error(e);
+            Logger.error(e);
-        _state.value = CommunicationChannelState.notConnected;
+            _state.value = CommunicationChannelState.notConnected;
-        filesListener?.onError?.call(e, s);
+            filesListener?.onError?.call(e, s);
-      },
+          },
-      cancelOnError: filesListener?.cancelOnError,
+          cancelOnError: filesListener?.cancelOnError,
-    );
+        );
     if (_messagesSubscription != null) {
       Logger.info('Messages subscription was created successfully');
       eventListener.onCreated?.call();

lib/src/utils/stream_mapper.dart

@@ -4,15 +4,18 @@ import 'package:nearby_service/src/utils/json_decoder.dart';
 abstract class MessagesStreamMapper {
   static ReceivedNearbyMessage replaceId(
     ReceivedNearbyMessage message,
-    String id,
+    String? id,
   ) {
-    return ReceivedNearbyMessage(
+    if (id != null) {
-      content: message.content,
+      return ReceivedNearbyMessage(
-      sender: NearbyDeviceInfo(
+        content: message.content,
-        id: id,
+        sender: NearbyDeviceInfo(
-        displayName: message.sender.displayName,
+          id: id,
-      ),
+          displayName: message.sender.displayName,
-    );
+        ),
+      );
+    }
+    throw NearbyServiceException('The provided ID does not exist');
   }
 
   static ReceivedNearbyMessage? toMessage(dynamic event) {