Update Voice Agent Flutter App

 - update voice-agent flutter app to use whisper AI for
   speech-to-text functionality.
 - Integrated SharedPreferences to store the application state.

Bug-AGL: SPEC-5200
Change-Id: I9a05b1d135c1fa07949333391ff828f166b7fe8e
Signed-off-by: Anuj-S62 <anuj603362@gmail.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/lib/screens/loading_screen.dart b/lib/screens/loading_screen.dart
new file mode 100644
index 0000000..f4d6c6d
--- /dev/null
+++ b/lib/screens/loading_screen.dart
@@ -0,0 +1,81 @@
+import 'dart:async';
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter_voiceassistant/screens/home_screen.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../models/app_state.dart';
+import '../utils/app_config.dart';
+
+class Loading extends StatelessWidget {
+  final AppConfig config;
+  final String wakeWord;
+  Loading({required this.config, required this.wakeWord});
+
+  Future<void> initialize(BuildContext context) async {
+    // Initialize the app
+    final appState = context.read<AppState>();
+    bool isWakeWordMode = false;
+    String intentEngine = "snips";
+    String streamId = "";
+    bool isCommandProcessing = false;
+    String commandProcessingText = "Processing...";
+    String sttFramework = "vosk";
+    bool onlineMode = false;
+
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    prefs.reload();
+    if(prefs.containsKey('isWakeWordMode')) {
+      isWakeWordMode = await prefs.getBool('isWakeWordMode')!;
+    }
+    if(prefs.containsKey('intentEngine')) {
+      intentEngine = await prefs.getString('intentEngine')!;
+    }
+    if(prefs.containsKey('streamId')) {
+      streamId = await prefs.getString('streamId')!;
+    }
+    if(prefs.containsKey('isCommandProcessing')) {
+      isCommandProcessing = await prefs.getBool('isCommandProcessing')!;
+    }
+    if(prefs.containsKey('commandProcessingText')) {
+      commandProcessingText = await prefs.getString('commandProcessingText')!;
+    }
+    if(prefs.containsKey('sttFramework')) {
+      sttFramework = await prefs.getString('sttFramework')!;
+    }
+    if(prefs.containsKey('onlineMode')) {
+      onlineMode = await prefs.getBool('onlineMode')!;
+    }
+
+    appState.isWakeWordMode = isWakeWordMode;
+    appState.intentEngine = intentEngine;
+    appState.streamId = streamId;
+    appState.isCommandProcessing = isCommandProcessing;
+    appState.commandProcessingText = commandProcessingText;
+    appState.sttFramework = sttFramework;
+    appState.onlineMode = onlineMode;
+
+    print('isWakeWordMode: $isWakeWordMode');
+    print('intentEngine: $intentEngine');
+    print('streamId: $streamId');
+    print('isCommandProcessing: $isCommandProcessing');
+    print('commandProcessingText: $commandProcessingText');
+    print('sttFramework: $sttFramework');
+    print('onlineMode: $onlineMode');
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return FutureBuilder(
+      future: initialize(context),
+      builder: (context, snapshot) {
+        if (snapshot.connectionState == ConnectionState.done) {
+          return HomePage(config: config, wakeWord: wakeWord);
+        } else {
+          return CupertinoActivityIndicator();
+        }
+      },
+    );
+  }
+}