# Project export: Caren AI This document was generated by HackStack to give an AI agent context about a hackathon project. Sections are labeled with their provenance; content marked as truncated was cut to keep this document small. ## Project metadata - Hackathon: TreeHacks 2025 - Tagline: Because everyone deserves someone who cares - Devpost: https://devpost.com/software/caren-ai - GitHub: https://github.com/Tap2Call/flutterflow - Demo: http://tap2call.flutterflow.app/ - Video: https://www.youtube.com/embed/8ZOR9M53RlM?enablejsapi=1&hl=en_US&rel=0&start=&version=3&wmode=transparent - Result: winner (Flutterflow: Best Use of FlutterFlow ($2,000 Cash + meet w/ founders [1st] & $1,500 Cash [2nd] & iPad 10.9"s [3rd])) - Team: 2 GitHub contributor(s) — FlutterFlow (4 commits), Tirth Patel (1 commits) ## Devpost submission (written by the team) ### Inspiration Every year, 850 million insurance claims are denied in the U.S., leaving patients with unexpected medical bills and financial stress. Shockingly, less than 1% of these denied claims are ever appealed not because they lack merit, but because the appeal process is frustrating, time-consuming, and complicated (Wall Street Journal). As a result, nearly 1/3 of Americans contribute to $220 billion in medical debt, often due to denied or mishandled claims (Consumer Financial Protection Bureau). We wanted to level the playing field by putting AI in the patient’s corner. What if an AI negotiator could read the fine print, fight back against denials, and handle everything seamlessly? That’s how Caren AI was born—to empower patients, recover their rightful coverage, and eliminate unfair medical debt. ### What it does Caren AI automates the insurance claim appeal process and negotiates with insurance providers on behalf of patients. Our AI reads insurance denial letters, cross-references them with Evidence of Coverage (EOC) documents, and calls insurance companies to dispute denials using legally backed arguments. Key Features: AI-Powered Claim Negotiation – Caren AI analyzes insurance policies and denial letters, then calls the insurance provider via Twilio to dispute the claim. Automated Healthcare Scheduling – The AI finds available doctor appointments and books them for the patient in seconds. Intelligent Appeals Processing – Uses ElevenLabs Conversational AI, trained on insurance documents, to craft strong, evidence-based appeal arguments. Caren AI features two AI agents dedicated to simplifying healthcare management: Sam (Scheduling AI) – Helps users book and manage doctor appointments based on availability and medical history. Noa (Negotiation AI) – Calls insurance providers, disputes denied claims, and negotiates fair settlements to reduce costs. Result: Patients save thousands on medical bills without the hassle of navigating complex insurance policies themselves. ### How we built it We designed Caren AI as a full-stack AI-powered assistant, ensuring seamless automation of insurance claim disputes and healthcare scheduling. Frontend: FlutterFlow (Dart) – A clean, user-friendly interface for patients. AI Backend: ElevenLabs Conversational AI – Trained on insurance policy documents for intelligent claim analysis. Fastest AI Model: Gemini 2.0 Flash – Parses complex medical and insurance documentation. Live Call Automation: Twilio API – AI negotiates claims directly with insurers via automated phone calls. Authentication: Firebase Authentication – Secure user logins and data protection. By combining AI, automation, and real-time negotiation, we eliminated the need for manual claim appeals, making the process fast, accurate, and effortless for patients. ### Challenges we ran into Training AI on Complex Insurance Policies – Extracting accurate insights from dense, jargon-heavy documents required custom model fine-tuning. Real-Time Insurance Call Handling – Ensuring AI could hold a live, logical conversation with insurers using Twilio without sounding robotic was a key challenge. Using Flutter for the First Time – Since our team was new to FlutterFlow, we had to learn its UI-building framework and state management quickly to build a seamless frontend experience. Through iterative testing, API optimizations, and AI refinement, we successfully overcame these hurdles to create a seamless patient experience. ### Accomplishments we're proud of Built a Fully Functional AI-Powered Claim Negotiator – Our AI successfully disputes insurance claims in real-time. Implemented End-to-End Automation – From claim upload to resolution, everything happens without manual intervention. Integrated Live Twilio Call Handling – Caren AI makes phone calls to insurers, delivering legally sound counterarguments. Designed a Scalable, Patient-Friendly Platform – Built using FlutterFlow, making it accessible to all users, regardless of tech expertise. Our solution doesn’t just solve a problem it revolutionizes patient advocacy in healthcare. ### What we learned The Healthcare System is Stacked Against Patients – Insurance denials are often not justified, but most patients don’t have the knowledge or time to fight back. AI Can Level the Playing Field – With intelligent claim analysis and negotiation, AI can recover thousands of dollars for patients. User Experience Matters – Many users aren't tech-savvy, so creating a seamless, intuitive interface was crucial. Real-Time Communication with Insurers is Game-Changing – Automating insurance negotiations was far more effective than just document-based appeals. Caren AI isn’t just an app—it’s a movement. By leveraging AI negotiation, we’re fighting for patient rights and bringing fairness back to healthcare. Join the revolution, and let AI handle the hassle, so you can focus on your health. ### What's next Callback Feature for Dropped Calls – If an insurance call disconnects, Caren AI will automatically redial and resume the negotiation. Multilingual Support– Expanding beyond English to support Spanish, French, and more to help non-native speakers navigate insurance issues. Family Insurance Management – A family plan feature that allows users to track and manage multiple insurance claims in one place. ## README (from the GitHub repository) # Caren AI A new Flutter project. ## Getting Started ## Detected evidence (automated analysis) Indexed codebase: 109 recognized source files, 593 KB. - C (language) — detected in the code - Dart (language) — detected in the code - HTML (language) — detected in the code - JavaScript (language) — detected in the code - Kotlin (language) — detected in the code - Swift (language) — detected in the code - Firebase (technology) — claimed on Devpost, not found in the code - Google Gemini (technology) — claimed on Devpost, not found in the code ## Codebase structure (from repository index) ### Files (120 of 163) ``` analysis_options.yaml android/.gitignore android/app/build.gradle android/app/google-services.json android/app/proguard-rules.pro android/app/src/debug/AndroidManifest.xml android/app/src/main/AndroidManifest.xml android/app/src/main/kotlin/com/example/my_project/MainActivity.kt android/app/src/main/res/drawable/launch_background.xml android/app/src/main/res/values-night-v31/styles.xml android/app/src/main/res/values-night/styles.xml android/app/src/main/res/values-v31/styles.xml android/app/src/main/res/values/strings.xml android/app/src/main/res/values/styles.xml android/app/src/profile/AndroidManifest.xml android/build.gradle android/gradle.properties android/gradle/wrapper/gradle-wrapper.properties android/settings.gradle dependencies/ff_commons/lib/api_requests/api_manager.dart dependencies/ff_commons/lib/api_requests/api_paging_params.dart dependencies/ff_commons/lib/api_requests/api_streaming.dart dependencies/ff_commons/lib/api_requests/get_streamed_response_http.dart dependencies/ff_commons/lib/api_requests/get_streamed_response_web.dart dependencies/ff_commons/lib/api_requests/get_streamed_response.dart dependencies/ff_commons/lib/flutter_flow/lat_lng.dart dependencies/ff_commons/lib/flutter_flow/place.dart dependencies/ff_commons/lib/flutter_flow/upload_data_class.dart dependencies/ff_commons/lib/flutter_flow/uploaded_file.dart dependencies/ff_commons/pubspec.yaml dependencies/ff_theme/lib/flutter_flow/flutter_flow_theme.dart dependencies/ff_theme/pubspec.yaml dependencies/toggle_button_cmbg9l/.gitignore dependencies/toggle_button_cmbg9l/.metadata dependencies/toggle_button_cmbg9l/analysis_options.yaml dependencies/toggle_button_cmbg9l/lib/components/button_model.dart dependencies/toggle_button_cmbg9l/lib/components/button_widget.dart dependencies/toggle_button_cmbg9l/lib/custom_code/widgets/custom_ripple_widget.dart dependencies/toggle_button_cmbg9l/lib/custom_code/widgets/index.dart dependencies/toggle_button_cmbg9l/lib/flutter_flow/flutter_flow_animations.dart dependencies/toggle_button_cmbg9l/lib/flutter_flow/flutter_flow_model.dart dependencies/toggle_button_cmbg9l/lib/flutter_flow/flutter_flow_util.dart dependencies/toggle_button_cmbg9l/lib/flutter_flow/flutter_flow_widgets.dart dependencies/toggle_button_cmbg9l/lib/flutter_flow/nav/nav.dart dependencies/toggle_button_cmbg9l/lib/flutter_flow/nav/serialization_util.dart dependencies/toggle_button_cmbg9l/lib/index.dart dependencies/toggle_button_cmbg9l/lib/main.dart dependencies/toggle_button_cmbg9l/lib/pages/home_page/home_page_model.dart dependencies/toggle_button_cmbg9l/lib/pages/home_page/home_page_widget.dart dependencies/toggle_button_cmbg9l/macos/.gitignore dependencies/toggle_button_cmbg9l/macos/Flutter/Flutter-Debug.xcconfig dependencies/toggle_button_cmbg9l/macos/Flutter/Flutter-Release.xcconfig dependencies/toggle_button_cmbg9l/macos/Flutter/GeneratedPluginRegistrant.swift dependencies/toggle_button_cmbg9l/macos/Podfile dependencies/toggle_button_cmbg9l/macos/Runner.xcodeproj/project_auth.pbxproj dependencies/toggle_button_cmbg9l/macos/Runner.xcodeproj/project.pbxproj dependencies/toggle_button_cmbg9l/macos/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist dependencies/toggle_button_cmbg9l/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme dependencies/toggle_button_cmbg9l/macos/Runner.xcworkspace/contents.xcworkspacedata dependencies/toggle_button_cmbg9l/macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist dependencies/toggle_button_cmbg9l/macos/Runner/AppDelegate.swift dependencies/toggle_button_cmbg9l/macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json dependencies/toggle_button_cmbg9l/macos/Runner/Base.lproj/MainMenu.xib dependencies/toggle_button_cmbg9l/macos/Runner/Configs/AppInfo.xcconfig dependencies/toggle_button_cmbg9l/macos/Runner/Configs/Debug.xcconfig dependencies/toggle_button_cmbg9l/macos/Runner/Configs/Release.xcconfig dependencies/toggle_button_cmbg9l/macos/Runner/Configs/Warnings.xcconfig dependencies/toggle_button_cmbg9l/macos/Runner/DebugProfile.entitlements dependencies/toggle_button_cmbg9l/macos/Runner/Info.plist dependencies/toggle_button_cmbg9l/macos/Runner/MainFlutterWindow.swift dependencies/toggle_button_cmbg9l/macos/Runner/Release.entitlements dependencies/toggle_button_cmbg9l/pubspec.yaml dependencies/toggle_button_cmbg9l/README.md firebase/firebase.json firebase/functions/api_manager.js firebase/functions/index.js firebase/functions/package.json firebase/storage.rules ios/.gitignore ios/Flutter/AppFrameworkInfo.plist ios/Flutter/Debug.xcconfig ios/Flutter/Release.xcconfig ios/ImageNotification/Info.plist ios/ImageNotification/NotificationService.swift ios/Podfile ios/Runner.xcodeproj/project.pbxproj ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme ios/Runner.xcworkspace/contents.xcworkspacedata ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings ios/Runner/AppDelegate.swift ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md ios/Runner/Base.lproj/LaunchScreen.storyboard ios/Runner/Base.lproj/Main.storyboard ios/Runner/GoogleService-Info.plist ios/Runner/Info.plist ios/Runner/PrivacyInfo.xcprivacy ios/Runner/Runner-Bridging-Header.h ios/Runner/Runner.entitlements lib/agent/noa_negotiate/noa_negotiate_model.dart lib/agent/noa_negotiate/noa_negotiate_widget.dart lib/agent/noa/noa_model.dart lib/agent/noa/noa_widget.dart lib/agent/sam/sam_model.dart lib/agent/sam/sam_widget.dart lib/app_state.dart lib/auth/auth_manager.dart lib/auth/base_auth_user_provider.dart lib/auth/create_account/create_account_model.dart lib/auth/create_account/create_account_widget.dart lib/auth/firebase_auth/anonymous_auth.dart lib/auth/firebase_auth/apple_auth.dart lib/auth/firebase_auth/auth_util.dart lib/auth/firebase_auth/email_auth.dart lib/auth/firebase_auth/firebase_auth_manager.dart [43 more files omitted for size] ``` ### Dependencies - firebase/functions/package.json: @mux/mux-node@^7.3.3, @onesignal/node-onesignal@^2.0.1-beta2, axios@1.7.4, braintree@^3.6.0, eslint@^6.8.0, eslint-plugin-promise@^4.2.1, firebase-admin@^11.11.0, firebase-functions@^4.4.1, qs@^6.7.0, razorpay@^2.8.4, stripe@^8.0.1 ### Recent commits (newest first) - Update README.md - Restyling the UI with new colors and logos - Fixed bug with noa_negotiate page - Added more for Noa and Sam (agent pages) - Updating with our latest flutterflow state ## Key source files (fetched from GitHub, selected and truncated for size) ### firebase/functions/package.json ``` { "name": "cloud-functions", "description": "Firebase Cloud Functions", "dependencies": { "firebase-admin": "^11.11.0", "firebase-functions": "^4.4.1", "braintree": "^3.6.0", "@mux/mux-node": "^7.3.3", "stripe": "^8.0.1", "axios": "1.7.4", "razorpay": "^2.8.4", "qs": "^6.7.0", "@onesignal/node-onesignal": "^2.0.1-beta2" }, "devDependencies": { "eslint": "^6.8.0", "eslint-plugin-promise": "^4.2.1" }, "scripts": { "lint": "./node_modules/.bin/eslint --max-warnings=0 .", "serve": "firebase -P treehacks-3f859 emulators:start --only functions", "shell": "firebase -P treehacks-3f859 functions:shell", "start": "npm run shell", "logs": "firebase -P treehacks-3f859 functions:log", "compile": "cp ../../tsconfig.template.json ./tsconfig-compile.json && tsc --project tsconfig-compile.json" }, "engines": { "node": "18" }, "private": true } ``` ### firebase/functions/index.js ```javascript const functions = require("firebase-functions"); const admin = require("firebase-admin"); admin.initializeApp(); ``` ### analysis_options.yaml ```yaml analyzer: exclude: - lib/custom_code/** - lib/flutter_flow/custom_functions.dart ``` ### pubspec.yaml ```yaml name: translate_using_groq_streaming_a_p_is description: A new Flutter project. # The following line prevents the package from being accidentally published to # pub.dev using `pub publish`. This is preferred for private packages. publish_to: 'none' # Remove this line if you wish to publish to pub.dev # The following defines the version and build number for your application. # A version number is three numbers separated by dots, like 1.2.43 # followed by an optional build number separated by a +. # Both the version and the builder number may be overridden in flutter # build by specifying --build-name and --build-number, respectively. # In Android, build-name is used as versionName while build-number used as versionCode. # Read more about Android versioning at https://developer.android.com/studio/publish/versioning # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. # Read more about iOS versioning at # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html version: 1.0.0+1 environment: sdk: ">=3.0.0 <4.0.0" dependencies: flutter: sdk: flutter flutter_localizations: sdk: flutter flutter_web_plugins: sdk: flutter auto_size_text: 3.0.0 cached_network_image: 3.4.1 cached_network_image_platform_interface: 4.1.1 cached_network_image_web: 1.3.1 carousel_slider: 5.0.0 collection: 1.19.0 csv: 6.0.0 equatable: 2.0.5 fetch_api: 2.2.0 fetch_client: 1.1.2 ff_commons: path: ./dependencies/ff_commons # 1.0.0+1 ff_theme: path: ./dependencies/ff_theme # 1.0.0+1 firebase_auth: 5.3.3 firebase_auth_platform_interface: 7.4.9 firebase_auth_web: 5.13.4 firebase_core: 3.8.0 firebase_core_platform_interface: 5.3.0 firebase_core_web: 2.18.1 firebase_performance: 0.10.0+10 firebase_performance_platform_interface: 0.1.4+46 firebase_performance_web: 0.1.7+4 flutter_animate: 4.5.0 flutter_cache_manager: 3.4.1 flutter_secure_storage: 9.2.2 flutter_secure_storage_linux: 1.2.1 flutter_secure_storage_macos: 3.1.2 flutter_secure_storage_platform_interface: 1.1.2 flutter_secure_storage_web: 1.2.1 flutter_secure_storage_windows: 3.1.2 font_awesome_flutter: 10.7.0 from_css_color: 2.0.0 go_router: 12.1.3 google_fonts: 6.1.0 google_sign_in: 6.2.1 google_sign_in_android: 6.1.30 google_sign_in_ios: 5.7.7 google_sign_in_platform_interface: 2.4.5 google_sign_in_web: 0.12.4+2 http: 1.2.2 intl: 0.19.0 json_path: 0.7.2 mime_type: 1.0.0 page_transition: 2.1.0 path_provider: 2.1.4 path_provider_android: 2.2.10 path_provider_foundation: 2.4.0 path_provider_linux: 2.2.1 path_provider_platform_interface: 2.1.2 path_provider_windows: 2.3.0 plugin_platform_interface: 2.1.8 provider: 6.1.2 rxdart: 0.27.7 shared_preferences: 2.3.2 shared_preferences_android: 2.3.2 shared_preferences_foundation: 2.5.2 shared_preferences_linux: 2.4.1 shared_preferences_platform_interface: 2.4.1 shared_preferences_web: 2.4.2 shared_preferences_windows: 2.4.1 sign_in_with_apple: 6.1.2 sign_in_with_apple_platform_interface: 1.1.0 sign_in_with_apple_web: 2.1.0 simple_gradient_text: 1.2.3 smooth_page_indicator: 1.1.0 sqflite: 2.3.3+1 sqflite_common: 2.5.4+3 synchronized: 3.2.0 timeago: 3.6.1 toggle_button_cmbg9l: path: ./dependencies/toggle_button_cmbg9l # 0.0.8 url_launcher: 6.3.0 url_launcher_android: 6.3.10 url_launcher_ios: 6.3.1 url_launcher_linux: 3.2.0 url_launcher_macos: 3.2.1 url_launcher_platform_interface: 2.3.2 url_launcher_web: 2.3.3 url_launcher_windows: 3.1.2 # The following adds the Cupertino Icons font to your application. # Use with the CupertinoIcons class for iOS style icons. cupertino_icons: ^1.0.0 dependency_overrides: http: 1.2.2 uuid: ^4.0.0 dev_dependencies: flutter_lints: 4.0.0 lints: 4.0.0 flutter_test: sdk: flutter # For information on the generic Dart part of this file, see the # following page: https://dart.dev/tools/pub/pubspec # The following section is specific to Flutter. flutter: # The following line ensures that the Material Icons font is # included with your application, so that you can use the icons in # the material Icons class. uses-material-design: true # To add assets to your application, add an assets section, like this: assets: - assets/fonts/ - assets/images/ - assets/videos/ - assets/audios/ - assets/rive_animations/ - assets/pdfs/ - assets/jsons/ - dependencies/toggle_button_cmbg9l/assets/fonts/ - dependencies/toggle_button_cmbg9l/assets/images/ - dependencies/toggle_button_cmbg9l/assets/videos/ - dependencies/toggle_button_cmbg9l/assets/audios/ - dependencies/toggle_button_cmbg9l/assets/rive_animations/ - dependencies/toggle_button_cmbg9l/assets/pdfs/ - dependencies/toggle_button_cmbg9l/assets/jsons/ # An image asset can refer to one or more resolution-specific "variants", see # https://flutter.dev/assets-and-images/#resolution-aware. # For details regarding adding assets from package dependencies, see # https://flutter.dev/assets-and-images/#from-packages # To add custom fonts to your application, add a fonts section here, # in this "flutter" section. Each entry in this list should have a # "family" key with the font family name, and a "fonts" key with a # list giving the asset and other descriptors for the font. For # example: # fonts: # - family: Schyler # fonts: # - asset: fonts/Schyler-Regular.ttf # - asset: fonts/Schyler-Italic.ttf # style: italic # - family: Trajan Pro # fonts: # - asset: fonts/TrajanPro.ttf # - asset: fonts/TrajanPro_Bold.ttf # weight: 700 # # For details regarding fonts from package dependencies, # see https://flutter.dev/custom-fonts/#from-packages ``` ### web/flutter_bootstrap.js ```javascript {{flutter_js}} {{flutter_build_config}} _flutter.loader.load( { onEntrypointLoaded: async function(engineInitializer) { // Initialize the Flutter engine let appRunner = await engineInitializer.initializeEngine({}); // Run the app await appRunner.runApp(); } } ); ``` ### test/widget_test.dart ```dart // This is a basic Flutter widget test. // // To perform an interaction with a widget in your test, use the WidgetTester // utility that Flutter provides. For example, you can send tap and scroll // gestures. You can also use WidgetTester to find child widgets in the widget // tree, read text, and verify that the values of widget properties are correct. import 'package:flutter_test/flutter_test.dart'; import 'package:translate_using_groq_streaming_a_p_is/main.dart'; void main() { testWidgets('Counter increments smoke test', (WidgetTester tester) async { // Build our app and trigger a frame. await tester.pumpWidget(MyApp()); }); } ``` ### lib/index.dart ```dart // Export pages export '/auth/onboarding_welcome/onboarding_welcome_widget.dart' show OnboardingWelcomeWidget; export '/auth/login/login_widget.dart' show LoginWidget; export '/auth/onboarding_call/onboarding_call_widget.dart' show OnboardingCallWidget; export '/auth/onboarding_history/onboarding_history_widget.dart' show OnboardingHistoryWidget; export '/auth/onboarding_schedule/onboarding_schedule_widget.dart' show OnboardingScheduleWidget; export '/agent/noa/noa_widget.dart' show NoaWidget; export '/agent/sam/sam_widget.dart' show SamWidget; export '/interaction/dashboard/dashboard_widget.dart' show DashboardWidget; export '/auth/create_account/create_account_widget.dart' show CreateAccountWidget; export '/auth/onboarding_done/onboarding_done_widget.dart' show OnboardingDoneWidget; export '/agent/noa_negotiate/noa_negotiate_widget.dart' show NoaNegotiateWidget; ``` ### web/index.html ```html Translate using Groq Streaming APIs ``` ### lib/main.dart ```dart import 'package:provider/provider.dart'; import 'package:flutter/material.dart'; import 'package:flutter_localizations/flutter_localizations.dart'; import 'package:flutter_web_plugins/url_strategy.dart'; import 'auth/firebase_auth/firebase_user_provider.dart'; import 'auth/firebase_auth/auth_util.dart'; import 'backend/firebase/firebase_config.dart'; import 'package:ff_theme/flutter_flow/flutter_flow_theme.dart'; import 'flutter_flow/flutter_flow_util.dart'; void main() async { WidgetsFlutterBinding.ensureInitialized(); GoRouter.optionURLReflectsImperativeAPIs = true; usePathUrlStrategy(); await initFirebase(); await FlutterFlowTheme.initialize(); final appState = FFAppState(); // Initialize FFAppState await appState.initializePersistedState(); runApp(MultiProvider( providers: [ ChangeNotifierProvider( create: (context) => appState, ), ], child: MyApp(), )); } class MyApp extends StatefulWidget { // This widget is the root of your application. @override State createState() => _MyAppState(); static _MyAppState of(BuildContext context) => context.findAncestorStateOfType<_MyAppState>()!; } class _MyAppState extends State { ThemeMode _themeMode = FlutterFlowTheme.themeMode; late AppStateNotifier _appStateNotifier; late GoRouter _router; String getRoute([RouteMatch? routeMatch]) { final RouteMatch lastMatch = routeMatch ?? _router.routerDelegate.currentConfiguration.last; final RouteMatchList matchList = lastMatch is ImperativeRouteMatch ? lastMatch.matches : _router.routerDelegate.currentConfiguration; return matchList.uri.toString(); } late Stream userStream; @override void initState() { super.initState(); _appStateNotifier = AppStateNotifier.instance; _router = createRouter(_appStateNotifier); userStream = translateUsingGroqStreamingAPIsFirebaseUserStream() ..listen((user) { _appStateNotifier.update(user); }); jwtTokenStream.listen((_) {}); Future.delayed( Duration(milliseconds: 1000), () => _appStateNotifier.stopShowingSplashImage(), ); } void setThemeMode(ThemeMode mode) => safeSetState(() { _themeMode = mode; FlutterFlowTheme.saveThemeMode(mode); }); @override Widget build(BuildContext context) { return MaterialApp.router( title: 'Translate using Groq Streaming APIs', localizationsDelegates: [ GlobalMaterialLocalizations.delegate, GlobalWidgetsLocalizations.delegate, GlobalCupertinoLocalizations.delegate, ], supportedLocales: const [Locale('en', '')], theme: ThemeData( brightness: Brightness.light, useMaterial3: false, ), darkTheme: ThemeData( brightness: Brightness.dark, useMaterial3: false, ), themeMode: _themeMode, routerConfig: _router, ); } } ``` ### lib/app_state.dart ```dart import 'package:flutter/material.dart'; import 'package:flutter_secure_storage/flutter_secure_storage.dart'; import 'package:csv/csv.dart'; import 'package:synchronized/synchronized.dart'; import 'flutter_flow/flutter_flow_util.dart'; class FFAppState extends ChangeNotifier { static FFAppState _instance = FFAppState._internal(); factory FFAppState() { return _instance; } FFAppState._internal(); static void reset() { _instance = FFAppState._internal(); } Future initializePersistedState() async { secureStorage = FlutterSecureStorage(); await _safeInitAsync(() async { _lastSelectedLanguage = await secureStorage.getString('ff_lastSelectedLanguage') ?? _lastSelectedLanguage; }); await _safeInitAsync(() async { _groqApiKey = await secureStorage.getString('ff_groqApiKey') ?? _groqApiKey; }); } void update(VoidCallback callback) { callback(); notifyListeners(); } late FlutterSecureStorage secureStorage; String _translatedChunks = ''; String get translatedChunks => _translatedChunks; set translatedChunks(String value) { _translatedChunks = value; } String _transcription = ''; String get transcription => _transcription; set transcription(String value) { _transcription = value; } String _lastSelectedLanguage = ''; String get lastSelectedLanguage => _lastSelectedLanguage; set lastSelectedLanguage(String value) { _lastSelectedLanguage = value; secureStorage.setString('ff_lastSelectedLanguage', value); } void deleteLastSelectedLanguage() { secureStorage.delete(key: 'ff_lastSelectedLanguage'); } String _groqApiKey = ''; String get groqApiKey => _groqApiKey; set groqApiKey(String value) { _groqApiKey = value; secureStorage.setString('ff_groqApiKey', value); } void deleteGroqApiKey() { secureStorage.delete(key: 'ff_groqApiKey'); } } void _safeInit(Function() initializeField) { try { initializeField(); } catch (_) {} } Future _safeInitAsync(Function() initializeField) async { try { await initializeField(); } catch (_) {} } extension FlutterSecureStorageExtensions on FlutterSecureStorage { static final _lock = Lock(); Future writeSync({required String key, String? value}) async => await _lock.synchronized(() async { await write(key: key, value: value); }); void remove(String key) => delete(key: key); Future getString(String key) async => await read(key: key); Future setString(String key, String value) async => await writeSync(key: key, value: value); Future getBool(String key) async => (await read(key: key)) == 'true'; Future setBool(String key, bool value) async => await writeSync(key: key, value: value.toString()); Future getInt(String key) async => int.tryParse(await read(key: key) ?? ''); Future setInt(String key, int value) async => await writeSync(key: key, value: value.toString()); Future getDouble(String key) async => double.tryParse(await read(key: key) ?? ''); Future setDouble(String key, double value) async => await writeSync(key: key, value: value.toString()); Future?> getStringList(String key) async => await read(key: key).then((result) { if (result == null || result.isEmpty) { return null; } return CsvToListConverter() .convert(result) .first .map((e) => e.toString()) .toList(); }); Future setStringList(String key, List value) async => await writeSync(key: key, value: ListToCsvConverter().convert([value])); } ``` [96 more indexed source files omitted to keep this export small. The full file list is in the Codebase structure section above.]