APP_NEW/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:lamiter/Component/loading.dart';
import 'package:lamiter/Page/login_page.dart';
import 'package:lamiter/Provider/Diagnosis/Diagnosis_Item/zong_fu_organ_provider.dart';
import 'package:lamiter/Provider/Diagnosis/diagnosis_provider.dart';
import 'package:lamiter/Provider/Form/constitution_form_provider.dart';
import 'package:lamiter/Provider/Form/create_edit_client_form_provider.dart';
import 'package:lamiter/Provider/Form/health_index_form_provider.dart';
import 'package:lamiter/Provider/Form/physical_index_form_provider.dart';
import 'package:lamiter/Provider/Form/posture_issue_form_provider.dart';
import 'package:lamiter/Provider/Form/sleep_well_index_form_provider.dart';
import 'package:lamiter/Provider/Form/stress_index_form_provider.dart';
import 'package:lamiter/Provider/Form/urban_disease_form_provider.dart';
import 'package:lamiter/Provider/Form/zong_fu_index_form_provider.dart';
import 'package:lamiter/Provider/Diagnosis/Diagnosis_Item/constitution_provider.dart';
import 'package:lamiter/Provider/Diagnosis/Diagnosis_Item/urban_disease_provider.dart';
import 'package:lamiter/Provider/Diagnosis/Diagnosis_Item/posture_issue_provider.dart';
import 'package:lamiter/Provider/Diagnosis/Diagnosis_Item/symptom_provider.dart';
import 'package:lamiter/Provider/Language/language_provider.dart';
import 'package:lamiter/Provider/Service/MedicalFacility/medical_facility_provider.dart';
import 'package:lamiter/Provider/Service/course_provider.dart';
import 'package:lamiter/Provider/Service/treatment_provider.dart';
import 'package:lamiter/Provider/User/Client/client_calendar_provider.dart';
import 'package:lamiter/Provider/User/Client/client_provider.dart';
import 'package:lamiter/Provider/Service/SeasonalRacipe/constitution_seasonal_recipe_provider.dart';
import 'package:lamiter/Provider/image_and_logo_provider.dart';
import 'package:lamiter/Provider/login_provider.dart';
import 'package:lamiter/Provider/User/manager_provider.dart';
import 'package:lamiter/Provider/Service/product_provider.dart';
import 'package:lamiter/Theme/light_mode.dart';
import 'package:lamiter/l10n/l10n.dart';
import 'package:provider/provider.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';

void main() async {
  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => LanguageProvider()),
      ],
      child: const MyApp(),
    ),
  );
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    ScreenUtil.init(context);

    final locale = context
        .select<LanguageProvider, Locale?>((provider) => provider.locale);

    return MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (context) => ImageAndLogoProvider()),
        ChangeNotifierProvider(create: (context) => LoginProvider()),
        ChangeNotifierProvider(create: (context) => ManagerProvider()),
        ChangeNotifierProvider(create: (context) => ClientProvider()),
        ChangeNotifierProvider(create: (context) => ClientCalendarProvider()),
        ChangeNotifierProvider(create: (context) => UrbanDiseaseProvider()),
        ChangeNotifierProvider(create: (context) => ConstitutionProvider()),
        ChangeNotifierProvider(create: (context) => ZongFuOrganProvider()),
        ChangeNotifierProvider(create: (context) => PostureIssueProvider()),
        ChangeNotifierProvider(create: (context) => SymptomProvider()),
        ChangeNotifierProvider(
            create: (context) => CreateEditClientFormProvider()),
        ChangeNotifierProvider(create: (context) => DiagnosisProvider()),
        ChangeNotifierProvider(create: (context) => HealthIndexFormProvider()),
        ChangeNotifierProvider(
            create: (context) => PhysicalIndexFormProvider()),
        ChangeNotifierProvider(create: (context) => UrbanDiseaseFormProvider()),
        ChangeNotifierProvider(create: (context) => StressIndexFormProvider()),
        ChangeNotifierProvider(
            create: (context) => SleepWellIndexFormProvider()),
        ChangeNotifierProvider(create: (context) => ConstitutionFormProvider()),
        ChangeNotifierProvider(create: (context) => ZongFuIndexFormProvider()),
        ChangeNotifierProvider(create: (context) => PostureIssueFormProvider()),
        ChangeNotifierProvider(create: (context) => ProductProvider()),
        ChangeNotifierProvider(create: (context) => TreatmentProvider()),
        ChangeNotifierProvider(create: (context) => CourseProvider()),
        ChangeNotifierProvider(create: (context) => MedicalFacilityProvider()),
        ChangeNotifierProvider(
            create: (context) => ConstitutionSeasonalRecipeProvider())
      ],
      child: MaterialApp(
        title: 'Lamiter',
        supportedLocales: L10n.locales,
        locale: locale,
        theme: lightTheme,
        debugShowCheckedModeBanner: false,
        localizationsDelegates: const [
          AppLocalizations.delegate,
          GlobalMaterialLocalizations.delegate,
          GlobalWidgetsLocalizations.delegate,
          GlobalCupertinoLocalizations.delegate,
        ],
        routes: {
          '/': (context) => _LoadingScreen(),
        },
      ),
    );
  }
}

class _LoadingScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final _image_and_logo_provider = Provider.of<ImageAndLogoProvider>(context);
    final _constitution_provider = Provider.of<ConstitutionProvider>(context);
    final _zong_fu_organ_provider = Provider.of<ZongFuOrganProvider>(context);
    final _posture_issue_provider = Provider.of<PostureIssueProvider>(context);
    final _symptom_provider = Provider.of<SymptomProvider>(context);
    final _urban_disease_provider = Provider.of<UrbanDiseaseProvider>(context);

    // 如果 provider 還沒載入，顯示 Loading 畫面
    if (_constitution_provider.elements.isEmpty ||
        _zong_fu_organ_provider.elements.isEmpty ||
        _posture_issue_provider.elements.isEmpty ||
        _urban_disease_provider.elements.isEmpty ||
        _symptom_provider.elements.isEmpty ||
        _image_and_logo_provider.image == null ||
        _image_and_logo_provider.logo == null) {
      return const Scaffold(body: Loading());
    }

    // 當 provider 有資料後，進入主頁
    return _MainScreen();
  }
}

class _MainScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return const LoginPage();
  }
}