//import 'package:audioplayers/audioplayers.dart';
import 'dart:io';

import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
// TODO // import 'package:flutter_beacon/flutter_beacon.dart';
import 'package:get/get.dart';
import 'package:mapbox_maps_flutter/mapbox_maps_flutter.dart';
import 'package:mymuseum_visitapp/Helpers/requirement_state_controller.dart';
import 'package:mymuseum_visitapp/Models/articleRead.dart';
import 'package:mymuseum_visitapp/Screens/Home/home_3.0.dart';
import 'package:mymuseum_visitapp/Screens/splash_screen.dart';
import 'package:mymuseum_visitapp/Services/Glasses/engines/impl/flutter_tts_engine.dart';
import 'package:mymuseum_visitapp/Services/Glasses/engines/impl/gemini_tts_engine.dart';
// ElevenLabsTtsEngine disponible dans impl/ mais retiré du pipeline — trop cher
import 'package:mymuseum_visitapp/Services/Glasses/glasses_background_service.dart';
import 'package:mymuseum_visitapp/Services/Glasses/engines/impl/myinfomate_llm_client.dart';
import 'package:mymuseum_visitapp/Services/Glasses/engines/impl/speech_to_text_stt.dart';
import 'package:mymuseum_visitapp/Services/Glasses/engines/impl/whisper_stt_engine.dart';
import 'package:mymuseum_visitapp/Services/Glasses/engines/impl/native_wake_word_engine.dart';
import 'package:mymuseum_visitapp/Services/Glasses/engines/impl/speech_to_text_wake_word.dart';
import 'package:mymuseum_visitapp/Services/Glasses/glasses_orchestrator.dart';
import 'package:mymuseum_visitapp/Services/meta_glasses_service.dart';
import 'package:mymuseum_visitapp/Services/pushNotificationService.dart';
import 'package:mymuseum_visitapp/l10n/app_localizations.dart';
import 'package:path_provider/path_provider.dart';
import 'package:provider/provider.dart';
import 'Helpers/DatabaseHelper.dart';
import 'Models/visitContext.dart';
import 'app_context.dart';
import 'client.dart';
import 'constants.dart';
import 'package:flutter_localizations/flutter_localizations.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const AppBootstrap());
}

class AppBootstrap extends StatefulWidget {
  const AppBootstrap({Key? key}) : super(key: key);

  @override
  _AppBootstrapState createState() => _AppBootstrapState();
}

class _AppBootstrapState extends State<AppBootstrap> {
  VisitAppContext? _ctx;

  @override
  void initState() {
    super.initState();
    _initApp();
  }

  Future<void> _initApp() async {
    // Firebase init (requires google-services.json on Android, GoogleService-Info.plist on iOS)
    if (!Platform.isWindows) {
      await Firebase.initializeApp();
    }

    VisitAppContext? localContext = await DatabaseHelper.instance.getData(DatabaseTableType.main);

    Directory? appDocumentsDirectory = Platform.isIOS ? await getApplicationDocumentsDirectory() : await getDownloadsDirectory();
    String localPath = appDocumentsDirectory!.path;

    MapboxOptions.setAccessToken("pk.eyJ1IjoidGZyYW5zb2xldCIsImEiOiJjbHRpcGNvZDYwYWhkMnFxdmF0ampveW10In0.7xHN0NGvUfQu5ThS3RGJRw"); // TODO put in json file or resource file

    if (localContext != null) {
      print("we've got an local db !");
      print(localContext);

      List<SectionRead> articleReadTest = List<SectionRead>.from(await DatabaseHelper.instance.getData(DatabaseTableType.articleRead));
      localContext.readSections = articleReadTest;
    } else {
      localContext = VisitAppContext(language: "FR", id: "UserId_Init", instanceId: kInstanceId, isAdmin: false, isAllLanguages: false);
      DatabaseHelper.instance.insert(DatabaseTableType.main, localContext.toMap());

      List<SectionRead> articleReadTest = List<SectionRead>.from(await DatabaseHelper.instance.getData(DatabaseTableType.articleRead));
      localContext.readSections = articleReadTest;
      print(localContext.readSections);

      print("NO LOCAL DB !");
    }

    localContext.clientAPI = Client(kApiBaseUrl, apiKey: localContext.apiKey ?? (kApiKey.isNotEmpty ? kApiKey : null));

    // Récupère publicApiKey depuis le backend si pas encore en mémoire
    if (localContext.apiKey == null && localContext.instanceId != null) {
      try {
        final instanceDto = await localContext.clientAPI.instanceApi!
            .instanceGetDetail(localContext.instanceId!);
        if (instanceDto?.publicApiKey != null) {
          localContext.apiKey = instanceDto!.publicApiKey;
          localContext.clientAPI = Client(kApiBaseUrl, apiKey: localContext.apiKey);
          DatabaseHelper.instance.updateTableMain(DatabaseTableType.main, localContext);
          print('publicApiKey loaded and saved');
        }
      } catch (e) {
        print('Could not load publicApiKey: $e');
      }
    }

    // Push notifications — subscribe to instance topic if enabled
    if (!Platform.isWindows && localContext.instanceId != null) {
      try {
        await PushNotificationService.initialize(localContext.instanceId!);
      } catch (e) {
        print('PushNotification init failed: $e');
      }
    }

    localContext.localPath = localPath;
    print("Local path $localPath");

    // Glasses init — initialize only here, startSession() est déclenché dans _MyAppState
    // TODO: remplacer glassesEnabled par un vrai toggle UI
    localContext.glassesEnabled = true;
    if (!Platform.isWindows && (Platform.isAndroid || Platform.isIOS)) {
      await MetaGlassesService.instance.initialize();
    }

    SystemChrome.setSystemUIOverlayStyle(const SystemUiOverlayStyle(
      systemNavigationBarColor: Colors.transparent,
      statusBarColor: Colors.transparent,
    ));

    if (mounted) setState(() => _ctx = localContext);
  }

  @override
  Widget build(BuildContext context) {
    if (_ctx == null) {
      return const MaterialApp(
        debugShowCheckedModeBanner: false,
        home: SplashScreen(),
      );
    }
    return MyApp(visitAppContext: _ctx!, initialRoute: '/home');
  }
}

class MyApp extends StatefulWidget {
  String initialRoute = "";
  VisitAppContext visitAppContext;
  MyApp({Key? key, required this.initialRoute, required this.visitAppContext}) : super(key: key);

  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with WidgetsBindingObserver {

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
    if (widget.visitAppContext.glassesEnabled &&
        !Platform.isWindows &&
        (Platform.isAndroid || Platform.isIOS)) {
      // Activity complètement attachée — démarrer le pipeline lunettes
      final ctx = widget.visitAppContext;
      WidgetsBinding.instance.addPostFrameCallback((_) async {
        // Foreground service Android — garde le main isolate vivant en background
        await GlassesBackgroundService.initialize();
        await GlassesBackgroundService.start();

        // connect() = enregistrement DAT + HFP audio routing (micro lunettes actif)
        await MetaGlassesService.instance.connect();

        // Orchestrateur avec implémentations swappables
        // Pour passer à ElevenLabs TTS : remplacer FlutterTtsEngine par ElevenLabsTtsEngine
        // Pour passer à Porcupine wake word : remplacer SpeechToTextWakeWordEngine par PorcupineWakeWordEngine
        final orchestrator = GlassesOrchestrator(
          visitAppContext: ctx,
          // OpenWakeWord natif Android (TFLite, background, écran éteint)
          // Changer modelName: 'hey_viva' pour l'autre wakeword disponible
          wakeWordEngine: Platform.isAndroid
              ? NativeWakeWordEngine(modelName: 'hey_viva')
              : SpeechToTextWakeWordEngine(keyword: 'visite'), // fallback iOS
          // STT : WhisperSttEngine si clé configurée, sinon SpeechToTextSttEngine
          // OpenAI : --dart-define=WHISPER_API_KEY=sk-xxx
          // Auto-hébergé : --dart-define=WHISPER_API_KEY=xxx --dart-define=WHISPER_ENDPOINT=http://ton-serveur:8000/v1/audio/transcriptions
          sttEngine: kWhisperApiKey.isNotEmpty
              ? WhisperSttEngine(apiKey: kWhisperApiKey, endpoint: kWhisperEndpoint)
              : SpeechToTextSttEngine(),
          // TTS : Gemini 2.5 Flash si clé configurée, sinon flutter_tts on-device (tests)
          ttsEngine: kGeminiApiKey.isNotEmpty
              ? GeminiTtsEngine(
                  apiKey: kGeminiApiKey,
                  voiceName: kGeminiTtsVoice,
                  voicePrompt: kGeminiTtsPrompt,
                )
              : FlutterTtsEngine(),
          llmClient: MyInfoMateLlmClient(visitAppContext: ctx),
        );
        activeOrchestrator = orchestrator;
        await orchestrator.start();
      });
    }
  }

  @override
  void dispose() {
    WidgetsBinding.instance.removeObserver(this);
    super.dispose();
  }

  /// Relance l'écoute wake word quand l'app repasse en foreground (déverrouillage).
  /// SpeechRecognizer se suspend quand l'écran est verrouillé — on le redémarre.
  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    if (state == AppLifecycleState.resumed) {
      final o = activeOrchestrator;
      // Relance uniquement si l'orchestrateur tourne ET qu'aucune conversation
      // n'est en cours (sinon on interromprait une question/réponse active)
      if (o != null && o.isRunning && !o.isInConversation) {
        o.restartWakeWord();
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    Get.put(RequirementStateController());

    return ChangeNotifierProvider<AppContext>(
      create: (_) => AppContext(widget.visitAppContext),
      child: MaterialApp(
          debugShowCheckedModeBanner: false,
          title: 'Carnaval de Marche', //'Musée de la fraise' // Autres // 'Fort Saint Héribert'
          initialRoute: widget.initialRoute,
          localizationsDelegates: const [
            AppLocalizations.delegate,
            GlobalMaterialLocalizations.delegate,
            GlobalWidgetsLocalizations.delegate,
            GlobalCupertinoLocalizations.delegate,
          ],
          supportedLocales: const[
           Locale('en', ''),
           Locale('fr', ''),
          ],
          theme: ThemeData(
            primarySwatch: Colors.blue,
            scaffoldBackgroundColor: kBackgroundColor,
            //fontFamily: "Vollkorn",
            textTheme: TextTheme(bodyLarge: TextStyle(color: widget.visitAppContext.configuration != null ? widget.visitAppContext.configuration!.primaryColor != null ? Color(int.parse(widget.visitAppContext.configuration!.primaryColor!.split('(0x')[1].split(')')[0], radix: 16)): kMainColor1 : kMainColor1)),
            visualDensity: VisualDensity.adaptivePlatformDensity,
            appBarTheme: const AppBarTheme(
              iconTheme: IconThemeData(color: Colors.white), // Change the color here
            ),
          ),
          routes: {
            '/home': (context) => const HomePage3(),
          }
      ),
    );
  }
}