Add flutter voice assistant app

A flutter based gRPC client Voice Assistant made specifically
to communicate with the Voice Agent service.

SPEC-4906
Signed-off-by: Malik Talha <talhamalik727x@gmail.com>
Change-Id: Ic4a382c1cdb78f1a79f985e3d37ce2fb06c53203

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/grpc/voice_agent_client.dart b/lib/grpc/voice_agent_client.dart
new file mode 100644
index 0000000..f25f0d2
--- /dev/null
+++ b/lib/grpc/voice_agent_client.dart
@@ -0,0 +1,71 @@
+import 'dart:async';
+import 'package:grpc/grpc.dart';
+import './generated/voice_agent.pbgrpc.dart';
+
+class VoiceAgentClient {
+  late ClientChannel _channel;
+  late VoiceAgentServiceClient _client;
+
+  VoiceAgentClient(String host, int port) {
+    // Initialize the client channel without connecting immediately
+    _channel = ClientChannel(
+      host,
+      port: port,
+      options: ChannelOptions(
+        credentials: ChannelCredentials.insecure(),
+      ),
+    );
+
+    _client = VoiceAgentServiceClient(_channel);
+  }
+
+  Future<ServiceStatus> checkServiceStatus() async {
+    final empty = Empty();
+    try {
+      final response = await _client.checkServiceStatus(empty);
+      return response;
+    } catch (e) {
+      print('Error calling CheckServiceStatus: $e');
+      // Handle the error gracefully, such as returning an error status
+      return ServiceStatus()..status = false;
+    }
+  }
+
+  Stream<WakeWordStatus> detectWakeWord() {
+    final empty = Empty();
+    try {
+      return _client.detectWakeWord(empty);
+    } catch (e) {
+      print('Error calling DetectWakeWord: $e');
+      // Handle the error gracefully, such as returning a default status
+      return Stream.empty(); // An empty stream as a placeholder
+    }
+  }
+
+  Future<RecognizeResult> recognizeVoiceCommand(
+      Stream<RecognizeControl> controlStream) async {
+    try {
+      final response = await _client.recognizeVoiceCommand(controlStream);
+      return response;
+    } catch (e) {
+      print('Error calling RecognizeVoiceCommand: $e');
+      // Handle the error gracefully, such as returning a default RecognizeResult
+      return RecognizeResult()..status = RecognizeStatusType.REC_ERROR;
+    }
+  }
+
+  Future<ExecuteResult> executeVoiceCommand(ExecuteInput input) async {
+    try {
+      final response = await _client.executeVoiceCommand(input);
+      return response;
+    } catch (e) {
+      print('Error calling ExecuteVoiceCommand: $e');
+      // Handle the error gracefully, such as returning an error status
+      return ExecuteResult()..status = ExecuteStatusType.EXEC_ERROR;
+    }
+  }
+
+  Future<void> shutdown() async {
+    await _channel.shutdown();
+  }
+}