import 'package:flutter/material.dart'; import 'package:flutter_tts/flutter_tts.dart'; import 'package:speech_to_text/speech_to_text.dart' as stt; void main() { runApp(const HRVoiceBotApp()); } class HRVoiceBotApp extends StatelessWidget { const HRVoiceBotApp({super.key}); @override Widget build(BuildContext context) { return MaterialApp( title: 'HR Voice Chatbot', theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue), useMaterial3: true, ), home: const VoiceBotScreen(), ); } } class VoiceBotScreen extends StatefulWidget { const VoiceBotScreen({super.key}); @override State createState() => _VoiceBotScreenState(); } class _VoiceBotScreenState extends State { final FlutterTts tts = FlutterTts(); final stt.SpeechToText speech = stt.SpeechToText(); String _conversation = ''; bool _isListening = false; bool _callInProgress = false; int _currentStep = 0; final List _botMessages = [ "Hello, this is an automated call from our HR department. Are you interested in hearing about our job opportunity?", "Great! Our company offers competitive salaries, flexible hours, and a great work environment. Would you like to schedule an interview?", "I'll schedule an interview for you. Our HR team will contact you with the details. Thank you for your time!", "Thank you for your time. Have a great day!" ]; @override void initState() { super.initState(); _initTTS(); } Future _initTTS() async { await tts.setLanguage('en-US'); await tts.setSpeechRate(0.5); } Future _startCall() async { setState(() { _callInProgress = true; _conversation = 'Bot: ${_botMessages[0]}\n'; }); await tts.speak(_botMessages[0]); _listenForResponse(); } Future _listenForResponse() async { if (!await speech.initialize()) { return; } setState(() => _isListening = true); speech.listen( onResult: (result) { if (result.finalResult) { setState(() { _isListening = false; _conversation += 'You: ${result.recognizedWords}\n'; _processResponse(result.recognizedWords.toLowerCase()); }); } }, ); } void _processResponse(String response) { if (_currentStep == 0) { if (response.contains('yes') || response.contains('sure') || response.contains('ok')) { _currentStep = 1; _speakBotMessage(1); } else { _currentStep = 3; _speakBotMessage(3); } } else if (_currentStep == 1) { if (response.contains('yes') || response.contains('ok') || response.contains('sure')) { _currentStep = 2; _speakBotMessage(2); } else { _currentStep = 3; _speakBotMessage(3); } } } Future _speakBotMessage(int index) async { setState(() { _conversation += 'Bot: ${_botMessages[index]}\n'; }); await tts.speak(_botMessages[index]); if (index == 2 || index == 3) { Future.delayed(const Duration(seconds: 3), () { setState(() { _callInProgress = false; _currentStep = 0; }); }); } else { _listenForResponse(); } } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: const Text('HR Voice Chatbot'), ), body: Padding( padding: const EdgeInsets.all(16.0), child: Column( children: [ Expanded( child: SingleChildScrollView( child: Text( _conversation, style: const TextStyle(fontSize: 16), ), ), ), const SizedBox(height: 20), if (!_callInProgress) ElevatedButton( onPressed: _startCall, child: const Text('Start Call'), ), if (_isListening) const Padding( padding: EdgeInsets.only(top: 16.0), child: Text('Listening...', style: TextStyle(color: Colors.green)), ), ], ), ), ); } @override void dispose() { tts.stop(); speech.stop(); super.dispose(); } } name: hr_voice_chatbot description: A Flutter application for HR voice chatbot that interacts with candidates. publish_to: 'none' version: 1.0.0+1 environment: sdk: '>=3.0.0 <4.0.0' dependencies: flutter: sdk: flutter cupertino_icons: ^1.0.2 flutter_tts: ^3.6.3 speech_to_text: ^6.1.1 dev_dependencies: flutter_test: sdk: flutter flutter_lints: ^2.0.0 flutter: uses-material-design: true