import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:provider/provider.dart';

import 'package:flutter_in_store_app_version_checker/flutter_in_store_app_version_checker.dart';

import 'package:on_field_work/helpers/services/app_logger.dart';
import 'package:on_field_work/helpers/services/localizations/language.dart';
import 'package:on_field_work/helpers/services/navigation_services.dart';
import 'package:on_field_work/helpers/services/storage/local_storage.dart';
import 'package:on_field_work/helpers/theme/app_theme.dart';
import 'package:on_field_work/helpers/theme/theme_customizer.dart';
import 'package:on_field_work/helpers/theme/app_notifier.dart';
import 'package:on_field_work/routes.dart';

import 'package:on_field_work/view/mandatory_update_screen.dart';

class MyApp extends StatefulWidget {
  final bool isOffline;
  const MyApp({super.key, required this.isOffline});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  bool _needsUpdate = false;
  String? _newVersion;
  InStoreAppVersionCheckerResult? _updateResult;

  final InStoreAppVersionChecker _checker = InStoreAppVersionChecker(
    androidStore: AndroidStore.googlePlayStore,
  );

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

  /// -------------------------
  /// Version Check
  /// -------------------------
  Future<void> _checkVersion() async {
    try {
      final result = await _checker.checkUpdate();
      _updateResult = result;
      logSafe("Version Check initiated...");
      logSafe("Current App Version: ${_checker.currentVersion}");
      logSafe("Result canUpdate: ${result.canUpdate}");
      logSafe("Result newVersion: ${result.newVersion}");
      logSafe("Result appURL: ${result.appURL}");
      if (result.canUpdate) {
        setState(() {
          _needsUpdate = true;
          _newVersion = result.newVersion ?? "";
        });

        logSafe("New version available → $_newVersion");
      }

      if (result.errorMessage != null) {
        logSafe("VersionChecker Error: ${result.errorMessage}");
      }
    } catch (e, stack) {
      logSafe(
        "Version check exception",
        error: e,
        stackTrace: stack,
        level: LogLevel.error,
      );
    }
  }

  /// -------------------------
  /// Initial Route Logic
  /// -------------------------
  Future<String> _getInitialRoute() async {
    try {
      final token = LocalStorage.getJwtToken();

      if (token == null || token.isEmpty) {
        return "/auth/login-option";
      }

      if (LocalStorage.getIsMpin()) {
        await LocalStorage.setBool("mpin_verified", false);
        return "/auth/mpin-auth";
      }

      return "/dashboard";
    } catch (e, stack) {
      logSafe(
        "Initial route ERROR",
        error: e,
        stackTrace: stack,
        level: LogLevel.error,
      );
      return "/auth/login-option";
    }
  }

  /// -------------------------
  /// Offline Overlay (Blocking)
  /// -------------------------
  Widget _buildOfflineOverlay() {
    return Directionality(
      textDirection: AppTheme.textDirection,
      child: Scaffold(
        backgroundColor: Colors.grey.shade200,
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Icon(Icons.cloud_off, size: 100, color: Colors.red.shade600),
              const SizedBox(height: 20),
              const Text(
                "You Are Offline",
                style: TextStyle(fontSize: 22, fontWeight: FontWeight.bold),
              ),
              const SizedBox(height: 10),
              const Padding(
                padding: EdgeInsets.symmetric(horizontal: 32),
                child: Text(
                  "Please check your internet connection and try again.",
                  textAlign: TextAlign.center,
                  style: TextStyle(fontSize: 16, color: Colors.black54),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  /// -------------------------
  /// Build
  /// -------------------------
  @override
  Widget build(BuildContext context) {
    if (_needsUpdate && !widget.isOffline) {
      // 4. USE THE NEW WIDGET HERE
      return MandatoryUpdateScreen(
        newVersion: _newVersion ?? "",
        updateResult: _updateResult,
      );
    }

    if (widget.isOffline) {
      return _buildOfflineOverlay();
    }

    return Consumer<AppNotifier>(
      builder: (_, notifier, __) {
        return FutureBuilder<String>(
          future: _getInitialRoute(),
          builder: (context, snapshot) {
            if (!snapshot.hasData) {
              return const MaterialApp(
                home: Center(child: CircularProgressIndicator()),
              );
            }

            return GetMaterialApp(
              debugShowCheckedModeBanner: false,
              theme: AppTheme.lightTheme,
              darkTheme: AppTheme.darkTheme,
              themeMode: ThemeCustomizer.instance.theme,
              navigatorKey: NavigationService.navigatorKey,
              initialRoute: snapshot.data!,
              getPages: getPageRoute(),
              supportedLocales: Language.getLocales(),
              localizationsDelegates: const [
                GlobalMaterialLocalizations.delegate,
                GlobalWidgetsLocalizations.delegate,
                GlobalCupertinoLocalizations.delegate,
              ],
              builder: (context, child) {
                NavigationService.registerContext(context);
                return Directionality(
                  textDirection: AppTheme.textDirection,
                  child: child ?? const SizedBox(),
                );
              },
            );
          },
        );
      },
    );
  }
}