اريد تقسيم هذا الكود الى عدة ملفات
import 'dart:async';
import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:telephony/telephony.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:flutter_contacts/flutter_contacts.dart';
import 'package:url_launcher/url_launcher.dart';

// مكتبة الاتصال التلقائي
import 'package:flutter_phone_direct_caller/flutter_phone_direct_caller.dart';

void main() => runApp(const SMSApp());

void onBackgroundMessage(SmsMessage message) {
  debugPrint("رسالة واردة في الخلفية: ${message.body}");
}

/// ألوان التطبيق المحدثة إلى أزرق جذاب
final ColorScheme lightColorScheme = ColorScheme(
  primary: Color(0xFF1976D2),
  onPrimary: Colors.white,
  primaryContainer: Color(0xFFBBDEFB),
  onPrimaryContainer: Color(0xFF0D47A1),
  secondary: Color(0xFF0288D1),
  onSecondary: Colors.white,
  secondaryContainer: Color(0xFFB3E5FC),
  onSecondaryContainer: Color(0xFF01579B),
  tertiary: Color(0xFF64B5F6),
  onTertiary: Colors.white,
  tertiaryContainer: Color(0xFFBBDEFB),
  onTertiaryContainer: Color(0xFF0D47A1),
  error: Color(0xFFB00020),
  onError: Colors.white,
  errorContainer: Color(0xFFFFDAD6),
  onErrorContainer: Color(0xFF410002),
  background: Colors.white,
  onBackground: Colors.black87,
  surface: Colors.white,
  onSurface: Colors.black87,
  surfaceVariant: Color(0xFFE3F2FD),
  onSurfaceVariant: Color(0xFF90CAF9),
  outline: Color(0xFF90CAF9),
  shadow: Colors.black54,
  inverseSurface: Color(0xFF121212),
  onInverseSurface: Colors.white,
  inversePrimary: Color(0xFF82B1FF),
  brightness: Brightness.light,
);

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'تحويل رصيد متعدد',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: lightColorScheme,
        fontFamily: 'Tajawal',
        useMaterial3: true,
        appBarTheme: AppBarTheme(
          backgroundColor: Colors.transparent,
          foregroundColor: lightColorScheme.onPrimary,
          elevation: 0,
          centerTitle: true,
          titleTextStyle: const TextStyle(
            fontSize: 18,
            fontWeight: FontWeight.w600,
            letterSpacing: 0.5,
          ),
          iconTheme: IconThemeData(color: lightColorScheme.onPrimary, size: 26),
          toolbarHeight: 80,
        ),
        cardTheme: CardTheme(
          color: lightColorScheme.surface,
          elevation: 1,
          margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(16),
          ),
          surfaceTintColor: Colors.transparent,
        ),
        elevatedButtonTheme: ElevatedButtonThemeData(
          style: ElevatedButton.styleFrom(
            backgroundColor: lightColorScheme.primary,
            foregroundColor: lightColorScheme.onPrimary,
            padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 24),
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(12),
            ),
            elevation: 0,
            textStyle: const TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.w600,
            ),
          ),
        ),
        outlinedButtonTheme: OutlinedButtonThemeData(
          style: OutlinedButton.styleFrom(
            foregroundColor: lightColorScheme.primary,
            side: BorderSide(color: lightColorScheme.primary, width: 1.5),
            padding: const EdgeInsets.symmetric(vertical: 14, horizontal: 24),
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(12),
            ),
            textStyle: const TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.w600,
            ),
          ),
        ),
        textButtonTheme: TextButtonThemeData(
          style: TextButton.styleFrom(
            foregroundColor: lightColorScheme.primary,
            textStyle: const TextStyle(
              fontWeight: FontWeight.w700,
              fontSize: 16,
            ),
          ),
        ),
        snackBarTheme: SnackBarThemeData(
          behavior: SnackBarBehavior.floating,
          backgroundColor: lightColorScheme.inverseSurface,
          elevation: 0,
          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
          contentTextStyle: TextStyle(
            color: lightColorScheme.onInverseSurface,
            fontWeight: FontWeight.w500,
            fontSize: 14,
          ),
          actionTextColor: lightColorScheme.primaryContainer,
        ),
        inputDecorationTheme: InputDecorationTheme(
          filled: true,
          fillColor: lightColorScheme.surfaceVariant.withOpacity(0.4),
          contentPadding: const EdgeInsets.symmetric(
            horizontal: 16,
            vertical: 14,
          ),
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(12),
            borderSide: BorderSide.none,
          ),
          focusedBorder: OutlineInputBorder(
            borderRadius: BorderRadius.circular(12),
            borderSide: BorderSide(color: lightColorScheme.primary, width: 2),
          ),
          errorBorder: OutlineInputBorder(
            borderRadius: BorderRadius.circular(12),
            borderSide: BorderSide(color: lightColorScheme.error, width: 1.5),
          ),
          labelStyle: TextStyle(
            color: lightColorScheme.onSurfaceVariant,
            fontWeight: FontWeight.w500,
          ),
          hintStyle: TextStyle(
            color: lightColorScheme.onSurfaceVariant.withOpacity(0.6),
          ),
          prefixIconColor: lightColorScheme.primary,
        ),
        dialogTheme: DialogTheme(
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(20),
          ),
          elevation: 0,
          backgroundColor: lightColorScheme.surface,
          contentTextStyle: TextStyle(
            color: lightColorScheme.onSurface,
            fontSize: 15,
          ),
          titleTextStyle: TextStyle(
            fontWeight: FontWeight.bold,
            fontSize: 18,
            color: lightColorScheme.onSurface,
          ),
        ),
        listTileTheme: ListTileThemeData(
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12),
          ),
          contentPadding: const EdgeInsets.symmetric(horizontal: 16),
          iconColor: lightColorScheme.primary,
          textColor: lightColorScheme.onSurface,
          dense: true,
        ),
        chipTheme: ChipThemeData(
          backgroundColor: lightColorScheme.surfaceVariant,
          selectedColor: lightColorScheme.primary,
          secondarySelectedColor: lightColorScheme.primary,
          disabledColor: lightColorScheme.surfaceVariant.withOpacity(0.4),
          labelStyle: const TextStyle(fontWeight: FontWeight.w500),
          secondaryLabelStyle: TextStyle(color: lightColorScheme.onPrimary),
          padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
          brightness: Brightness.light,
          side: BorderSide.none,
        ),
        dividerTheme: DividerThemeData(
          color: lightColorScheme.surfaceVariant,
          thickness: 1,
          space: 0,
        ),
        progressIndicatorTheme: ProgressIndicatorThemeData(
          color: lightColorScheme.primary,
          linearTrackColor: lightColorScheme.surfaceVariant,
        ),
        bottomSheetTheme: BottomSheetThemeData(
          backgroundColor: lightColorScheme.surface,
          shape: const RoundedRectangleBorder(
            borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
          ),
          elevation: 0,
        ),
      ),
      home: const SplashScreen(),
    );
  }
}

class ThousandsSeparatorInputFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(
    TextEditingValue oldValue,
    TextEditingValue newValue,
  ) {
    String onlyDigits = newValue.text.replaceAll(RegExp(r'[^0-9]'), '');
    if (onlyDigits.isEmpty) return newValue.copyWith(text: '');

    final buffer = StringBuffer();
    int len = onlyDigits.length;
    for (int i = 0; i < len; i++) {
      buffer.write(onlyDigits[i]);
      int posFromRight = len - i - 1;
      if (posFromRight % 3 == 0 && i != len - 1) buffer.write(',');
    }

    return TextEditingValue(
      text: buffer.toString(),
      selection: TextSelection.collapsed(offset: buffer.length),
    );
  }
}

class SplashScreen extends StatefulWidget {
  const SplashScreen({super.key});

  @override
  State<SplashScreen> createState() => _SplashScreenState();
}

class _SplashScreenState extends State<SplashScreen>
    with TickerProviderStateMixin {
  bool _isLoading = true;
  bool _hasSavedBalance = false;
  int _currentBalance = 0;
  late TextEditingController _balanceController;

  late AnimationController _logoAnimationController;
  late Animation<double> _logoAnimation;

  @override
  void initState() {
    super.initState();
    _balanceController = TextEditingController();

    _logoAnimationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 1200),
    );
    _logoAnimation = CurvedAnimation(
      parent: _logoAnimationController,
      curve: Curves.easeOutBack,
    );

    _logoAnimationController.forward();
    _loadBalance();
  }

  @override
  void dispose() {
    _balanceController.dispose();
    _logoAnimationController.dispose();
    super.dispose();
  }

  Future<void> _loadBalance() async {
    final prefs = await SharedPreferences.getInstance();
    final savedBalance = prefs.getInt('current_balance');

    if (savedBalance != null) {
      _currentBalance = savedBalance;
      _hasSavedBalance = true;
    }

    setState(() {
      _isLoading = false;
      if (_hasSavedBalance) {
        _balanceController.text = _formatWithThousandsSeparator(
          _currentBalance,
        );
      }
    });
  }

  String _formatWithThousandsSeparator(int value) {
    final s = value.toString();
    final buffer = StringBuffer();
    final len = s.length;
    for (int i = 0; i < len; i++) {
      buffer.write(s[i]);
      final posFromRight = len - i - 1;
      if (posFromRight % 3 == 0 && i != len - 1) buffer.write(',');
    }
    return buffer.toString();
  }

  Future<void> _saveBalance(int balance) async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setInt('current_balance', balance);
  }

  void _onContinue() {
    final input = _balanceController.text.replaceAll(',', '').trim();
    final balance = int.tryParse(input);

    if (balance == null || balance < 0) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(
          content: Text('يرجى إدخال مبلغ رصيد صالح (صفر أو أكثر)'),
        ),
      );
      return;
    }

    _saveBalance(balance).then((_) {
      Navigator.pushReplacement(
        context,
        PageRouteBuilder(
          transitionDuration: const Duration(milliseconds: 700),
          pageBuilder:
              (context, animation, secondaryAnimation) => FadeTransition(
                opacity: animation,
                child: const SMSHomePage(),
              ),
        ),
      );
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Theme.of(context).colorScheme.primary,
      body: SafeArea(
        child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 24),
          child:
              _isLoading
                  ? Center(
                    child: CircularProgressIndicator(
                      color: Theme.of(context).colorScheme.onPrimary,
                    ),
                  )
                  : Column(
                    children: [
                      Expanded(
                        child: SingleChildScrollView(
                          physics: const BouncingScrollPhysics(),
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.center,
                            children: [
                              ScaleTransition(
                                scale: _logoAnimation,
                                child: Icon(
                                  Icons.phone_iphone_rounded,
                                  color: Theme.of(
                                    context,
                                  ).colorScheme.onPrimary.withOpacity(0.9),
                                  size: 120,
                                ),
                              ),
                              const SizedBox(height: 24),
                              Text(
                                'مرحبًا بك في تطبيق تحويل رصيد متعدد',
                                style: TextStyle(
                                  fontSize: 24,
                                  fontWeight: FontWeight.w700,
                                  color:
                                      Theme.of(context).colorScheme.onPrimary,
                                  letterSpacing: 0.4,
                                ),
                                textAlign: TextAlign.center,
                              ),
                              const SizedBox(height: 12),
                              Text(
                                'سهل ومريح لإدارة وتحويل الرصيد الخاص بك. أضف الأرقام والمبالغ، وابدأ التحويل فورًا!',
                                style: TextStyle(
                                  fontSize: 16,
                                  color: Theme.of(
                                    context,
                                  ).colorScheme.onPrimary.withOpacity(0.85),
                                  height: 1.4,
                                ),
                                textAlign: TextAlign.center,
                              ),
                              const SizedBox(height: 36),
                              TextField(
                                controller: _balanceController,
                                keyboardType: TextInputType.number,
                                inputFormatters: [
                                  ThousandsSeparatorInputFormatter(),
                                ],
                                textAlign: TextAlign.right,
                                style: const TextStyle(
                                  fontSize: 18,
                                  fontWeight: FontWeight.w600,
                                ),
                                decoration: InputDecoration(
                                  filled: true,
                                  fillColor:
                                      Theme.of(context).colorScheme.surface,
                                  hintText: 'أدخل الرصيد الحالي في حسابك',
                                  labelText: 'الرصيد الحالي',
                                  prefixIcon: Icon(
                                    Icons.account_balance_wallet_rounded,
                                    color:
                                        Theme.of(context).colorScheme.primary,
                                  ),
                                  border: OutlineInputBorder(
                                    borderRadius: BorderRadius.circular(12),
                                  ),
                                  floatingLabelBehavior:
                                      FloatingLabelBehavior.always,
                                ),
                              ),
                            ],
                          ),
                        ),
                      ),
                      SizedBox(
                        width: double.infinity,
                        child: ElevatedButton(
                          onPressed: _onContinue,
                          style: ElevatedButton.styleFrom(
                            backgroundColor:
                                Theme.of(context).colorScheme.surface,
                            foregroundColor:
                                Theme.of(context).colorScheme.primary,
                            padding: const EdgeInsets.symmetric(vertical: 16),
                            shape: RoundedRectangleBorder(
                              borderRadius: BorderRadius.circular(12),
                            ),
                            elevation: 0,
                          ),
                          child: const Text(
                            'ابدأ الاستخدام',
                            style: TextStyle(
                              fontSize: 18,
                              fontWeight: FontWeight.bold,
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
        ),
      ),
    );
  }
}

class TransferItem {
  String number;
  int amount;
  String? pin;

  TransferItem({required this.number, required this.amount, this.pin});

  Map<String, dynamic> toMap() {
    return {'number': number, 'amount': amount, 'pin': pin};
  }

  factory TransferItem.fromMap(Map<String, dynamic> map) {
    return TransferItem(
      number: map['number'],
      amount: map['amount'],
      pin: map['pin'],
    );
  }
}

extension ContactExtensions on Contact {
  String initials() {
    if (displayName.isEmpty) return '';

    final parts = displayName.trim().split(RegExp(r'\s+'));
    if (parts.length == 1) {
      return parts[0].substring(0, 1).toUpperCase();
    } else {
      return (parts[0].substring(0, 1) + parts[1].substring(0, 1))
          .toUpperCase();
    }
  }
}

class NumberAmount {
  String number;
  String? displayName;
  int amount;

  NumberAmount({required this.number, this.displayName, required this.amount});
}

class SMSHomePage extends StatefulWidget {
  const SMSHomePage({super.key});

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

class _SMSHomePageState extends State<SMSHomePage>
    with WidgetsBindingObserver, TickerProviderStateMixin {
  final Telephony _telephony = Telephony.instance;
  SharedPreferences? _prefs;

  List<TransferItem> _transferList = [];
  String _selectedMethod = 'yemenMobile';
  bool _isTransferring = false;
  bool _stopTransferRequested = false;

  List<Map<String, dynamic>> _transferLogs = [];
  List<String> _savedNumbers = [];
  List<int> _savedAmounts = [];
  bool _didShowFavoritesDialog = false;
  String? _selectedQuickNumber;
  int _currentBalance = 0;

  late AnimationController _fabAnimationController;
  late Animation<double> _fabAnimation;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
    _initApp();

    _fabAnimationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 400),
    );
    _fabAnimation = CurvedAnimation(
      parent: _fabAnimationController,
      curve: Curves.easeInOutBack,
    );

    // لضمان ظهور زر التحويل دائماً
    _fabAnimationController.value = 1;
  }

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

  Future<void> _initApp() async {
    _prefs = await SharedPreferences.getInstance();
    _currentBalance = _prefs?.getInt('current_balance') ?? 0;

    List<String>? amountsStr = _prefs?.getStringList('savedAmounts');
    if (amountsStr != null) {
      _savedAmounts =
          amountsStr
              .map((e) => int.tryParse(e) ?? 0)
              .where((e) => e > 0)
              .toList();
    }

    if (_savedAmounts.isEmpty && !_didShowFavoritesDialog) {
      _didShowFavoritesDialog = true;
      await Future.delayed(Duration.zero);
      await _showFavoritesDialog();
    }

    List<String>? savedTransfers = _prefs?.getStringList('transferList');
    if (savedTransfers != null && savedTransfers.isNotEmpty) {
      _transferList =
          savedTransfers
              .map(
                (e) => TransferItem.fromMap(
                  json.decode(e) as Map<String, dynamic>,
                ),
              )
              .toList();
    } else {
      _transferList = [];
    }

    _selectedMethod = _prefs?.getString('selectedMethod') ?? 'yemenMobile';
    _savedNumbers = _prefs?.getStringList('savedNumbers') ?? [];

    await _requestPermissions();

    if (mounted) setState(() {});
  }

  Future<bool> _requestPermissions() async {
    final phoneStatus = await Permission.phone.status;
    final contactsStatus = await Permission.contacts.status;

    if (!phoneStatus.isGranted || !contactsStatus.isGranted) {
      final status = await [Permission.phone, Permission.contacts].request();

      if (!status[Permission.phone]!.isGranted ||
          !status[Permission.contacts]!.isGranted) {
        _showSnackBar(
          'يجب منح أذونات المكالمات وجهات الاتصال لاستخدام التطبيق',
        );
        return false;
      }
    }
    return true;
  }

  Future<void> _saveTransferList() async {
    final list = _transferList.map((e) => json.encode(e.toMap())).toList();
    await _prefs?.setStringList('transferList', list);
  }

  Future<void> _saveSelectedMethod() async {
    await _prefs?.setString('selectedMethod', _selectedMethod);
  }

  Future<void> _saveSavedNumbers() async {
    await _prefs?.setStringList('savedNumbers', _savedNumbers);
  }

  Future<void> _saveSavedAmounts() async {
    List<String> strList = _savedAmounts.map((e) => e.toString()).toList();
    await _prefs?.setStringList('savedAmounts', strList);
  }

  Future<void> _saveCurrentBalance() async {
    await _prefs?.setInt('current_balance', _currentBalance);
  }

  void _showSnackBar(String msg) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(
        content: Text(msg, style: const TextStyle(fontWeight: FontWeight.w500)),
        behavior: SnackBarBehavior.floating,
      ),
    );
  }

  Future<String?> _getContactNameFromNumber(String number) async {
    final hasPermission = await Permission.contacts.status;
    if (!hasPermission.isGranted) {
      final status = await Permission.contacts.request();
      if (!status.isGranted) return null;
    }
    final contacts = await FlutterContacts.getContacts(withProperties: true);
    for (var contact in contacts) {
      for (var phone in contact.phones) {
        final normalizedPhone = phone.number.replaceAll(RegExp(r'[^\d+]'), '');
        final normalizedNumber = number.replaceAll(RegExp(r'[^\d+]'), '');
        if (normalizedPhone == normalizedNumber) {
          return contact.displayName;
        }
      }
    }
    return null;
  }

  Future<void> _showFavoritesDialog() async {
    final amountsController = TextEditingController();

    await showDialog(
      context: context,
      barrierDismissible: false,
      builder: (context) {
        return AlertDialog(
          title: const Text('إعداد المبالغ المفضلة'),
          content: StatefulBuilder(
            builder: (context, setDialogState) {
              return Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  if (_savedAmounts.isEmpty)
                    Text(
                      'الرجاء إدخال المبالغ التي ترغب باستخدامها لاختيارها عند إضافة جهة اتصال',
                      style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                        color: Theme.of(context).colorScheme.onSurfaceVariant,
                      ),
                    ),
                  if (_savedAmounts.isNotEmpty)
                    Wrap(
                      spacing: 8,
                      runSpacing: 6,
                      children:
                          _savedAmounts
                              .map(
                                (amt) => Chip(
                                  label: Text(
                                    _formatWithThousandsSeparator(amt),
                                    style: const TextStyle(
                                      fontWeight: FontWeight.w600,
                                    ),
                                  ),
                                  onDeleted: () {
                                    setDialogState(() {
                                      _savedAmounts.remove(amt);
                                    });
                                  },
                                  deleteIconColor:
                                      Theme.of(context).colorScheme.error,
                                ),
                              )
                              .toList(),
                    ),
                  const SizedBox(height: 16),
                  TextField(
                    controller: amountsController,
                    keyboardType: TextInputType.number,
                    inputFormatters: [ThousandsSeparatorInputFormatter()],
                    decoration: InputDecoration(
                      labelText: 'إضافة مبلغ جديد',
                      prefixIcon: const Icon(Icons.add_circle_outline),
                      suffixIcon: IconButton(
                        icon: const Icon(Icons.add_circle_rounded),
                        onPressed: () {
                          final raw = amountsController.text.replaceAll(
                            ',',
                            '',
                          );
                          final numAmount = int.tryParse(raw);
                          if (numAmount == null || numAmount <= 0) {
                            _showSnackBar('يرجى إدخال مبلغ صحيح أكبر من صفر');
                            return;
                          }
                          if (_savedAmounts.contains(numAmount)) {
                            _showSnackBar('هذا المبلغ موجود بالفعل');
                            return;
                          }
                          setDialogState(() {
                            _savedAmounts.add(numAmount);
                            _savedAmounts.sort();
                            amountsController.clear();
                          });
                        },
                      ),
                    ),
                    onSubmitted: (value) {
                      final raw = value.replaceAll(',', '');
                      final numAmount = int.tryParse(raw);
                      if (numAmount == null || numAmount <= 0) {
                        _showSnackBar('يرجى إدخال مبلغ صحيح أكبر من صفر');
                        return;
                      }
                      if (_savedAmounts.contains(numAmount)) {
                        _showSnackBar('هذا المبلغ موجود بالفعل');
                        return;
                      }
                      setDialogState(() {
                        _savedAmounts.add(numAmount);
                        _savedAmounts.sort();
                        amountsController.clear();
                      });
                    },
                  ),
                ],
              );
            },
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('تخطي'),
            ),
            FilledButton(
              onPressed: () async {
                if (_savedAmounts.isEmpty) {
                  _showSnackBar('الرجاء إدخال مبلغ واحد على الأقل');
                  return;
                }
                await _saveSavedAmounts();
                Navigator.pop(context);
              },
              child: const Text('حفظ'),
            ),
          ],
        );
      },
    );
  }

  Future<int?> _pickAmountDialog() async {
    if (_savedAmounts.isEmpty) {
      _showSnackBar('لا توجد مبالغ محفوظة. الرجاء إضافتها في الإعدادات.');
      return null;
    }
    int? selectedAmount;

    await showModalBottomSheet(
      context: context,
      builder: (context) {
        return SafeArea(
          child: Padding(
            padding: const EdgeInsets.all(16),
            child: Wrap(
              spacing: 12,
              children:
                  _savedAmounts
                      .map(
                        (amount) => ChoiceChip(
                          label: Text(
                            _formatWithThousandsSeparator(amount),
                            style: TextStyle(
                              fontWeight: FontWeight.w600,
                              color:
                                  selectedAmount == amount
                                      ? Theme.of(context).colorScheme.onPrimary
                                      : Theme.of(context).colorScheme.primary,
                            ),
                          ),
                          selected: selectedAmount == amount,
                          onSelected: (_) {
                            selectedAmount = amount;
                            Navigator.pop(context);
                          },
                        ),
                      )
                      .toList(),
            ),
          ),
        );
      },
    );

    return selectedAmount;
  }

  void _showSavedNumbersSelection() async {
    final hasPermission = await _requestPermissions();
    if (!hasPermission) return;

    final contacts = await FlutterContacts.getContacts(
      withProperties: true,
      withThumbnail: true,
    );
    List<String> selectedNumbers = List.from(_savedNumbers);

    TextEditingController searchController = TextEditingController();
    String searchQuery = '';

    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      builder: (context) {
        return StatefulBuilder(
          builder: (context, setModal) {
            final filteredContacts =
                searchQuery.isEmpty
                    ? contacts
                    : contacts.where((contact) {
                      final contactNameLower =
                          contact.displayName.toLowerCase();
                      final queryLower = searchQuery.toLowerCase();

                      final phonesMatch = contact.phones.any(
                        (phone) =>
                            phone.number.toLowerCase().contains(queryLower),
                      );

                      return contactNameLower.contains(queryLower) ||
                          phonesMatch;
                    }).toList();

            return Container(
              height: MediaQuery.of(context).size.height * 0.85,
              padding: EdgeInsets.only(
                bottom: MediaQuery.of(context).viewInsets.bottom,
              ),
              child: Column(
                children: [
                  Padding(
                    padding: const EdgeInsets.symmetric(
                      horizontal: 16,
                      vertical: 12,
                    ),
                    child: Row(
                      children: [
                        Expanded(
                          child: TextField(
                            controller: searchController,
                            decoration: InputDecoration(
                              prefixIcon: const Icon(Icons.search),
                              hintText: 'ابحث في جهات الاتصال أو الأرقام',
                              isDense: true,
                            ),
                            onChanged: (value) {
                              setModal(() {
                                searchQuery = value.trim();
                              });
                            },
                          ),
                        ),
                        const SizedBox(width: 8),
                        IconButton(
                          icon: const Icon(Icons.close_rounded),
                          onPressed: () => Navigator.pop(context),
                          tooltip: 'إغلاق',
                        ),
                      ],
                    ),
                  ),
                  const Divider(height: 1),
                  Expanded(
                    child:
                        filteredContacts.isEmpty
                            ? Center(
                              child: Text(
                                'لا توجد جهات اتصال تطابق البحث',
                                style: Theme.of(
                                  context,
                                ).textTheme.bodyMedium?.copyWith(
                                  color:
                                      Theme.of(
                                        context,
                                      ).colorScheme.onSurfaceVariant,
                                ),
                              ),
                            )
                            : ListView.builder(
                              keyboardDismissBehavior:
                                  ScrollViewKeyboardDismissBehavior.onDrag,
                              physics: const BouncingScrollPhysics(),
                              itemCount: filteredContacts.length,
                              itemBuilder: (context, index) {
                                final contact = filteredContacts[index];
                                final phones = contact.phones;

                                return Card(
                                  margin: const EdgeInsets.symmetric(
                                    horizontal: 12,
                                    vertical: 6,
                                  ),
                                  child: Padding(
                                    padding: const EdgeInsets.symmetric(
                                      vertical: 8,
                                      horizontal: 12,
                                    ),
                                    child: Column(
                                      crossAxisAlignment:
                                          CrossAxisAlignment.start,
                                      children: [
                                        ListTile(
                                          contentPadding: EdgeInsets.zero,
                                          leading: CircleAvatar(
                                            radius: 24,
                                            backgroundImage:
                                                (contact.thumbnail != null &&
                                                        contact
                                                            .thumbnail!
                                                            .isNotEmpty)
                                                    ? MemoryImage(
                                                      contact.thumbnail!,
                                                    )
                                                    : null,
                                            child:
                                                (contact.thumbnail == null ||
                                                        contact
                                                            .thumbnail!
                                                            .isEmpty)
                                                    ? Text(
                                                      contact.initials(),
                                                      style: const TextStyle(
                                                        fontWeight:
                                                            FontWeight.bold,
                                                        color: Colors.white,
                                                        fontSize: 18,
                                                      ),
                                                    )
                                                    : null,
                                            backgroundColor:
                                                Theme.of(
                                                  context,
                                                ).colorScheme.primary,
                                          ),
                                          title: Text(
                                            contact.displayName,
                                            style: const TextStyle(
                                              fontSize: 16,
                                              fontWeight: FontWeight.w600,
                                            ),
                                            maxLines: 1,
                                            overflow: TextOverflow.ellipsis,
                                          ),
                                        ),
                                        const SizedBox(height: 4),
                                        Column(
                                          children:
                                              phones.map((phone) {
                                                final normalized = phone.number
                                                    .replaceAll(
                                                      RegExp(r'[^\d+]'),
                                                      '',
                                                    );
                                                final isSelected =
                                                    selectedNumbers.any((num) {
                                                      final n = num.replaceAll(
                                                        RegExp(r'[^\d+]'),
                                                        '',
                                                      );
                                                      return n == normalized;
                                                    });

                                                return CheckboxListTile(
                                                  contentPadding:
                                                      EdgeInsets.zero,
                                                  value: isSelected,
                                                  title: Text(
                                                    phone.number,
                                                    style: const TextStyle(
                                                      fontSize: 14,
                                                      fontWeight:
                                                          FontWeight.w500,
                                                    ),
                                                  ),
                                                  controlAffinity:
                                                      ListTileControlAffinity
                                                          .leading,
                                                  onChanged: (val) {
                                                    setModal(() {
                                                      if (val == true) {
                                                        if (!selectedNumbers.any(
                                                          (num) {
                                                            final n =
                                                                num.replaceAll(
                                                                  RegExp(
                                                                    r'[^\d+]',
                                                                  ),
                                                                  '',
                                                                );
                                                            return n ==
                                                                normalized;
                                                          },
                                                        )) {
                                                          selectedNumbers.add(
                                                            phone.number,
                                                          );
                                                        }
                                                      } else {
                                                        selectedNumbers
                                                            .removeWhere((num) {
                                                              final n =
                                                                  num.replaceAll(
                                                                    RegExp(
                                                                      r'[^\d+]',
                                                                    ),
                                                                    '',
                                                                  );
                                                              return n ==
                                                                  normalized;
                                                            });
                                                      }
                                                    });
                                                  },
                                                );
                                              }).toList(),
                                        ),
                                      ],
                                    ),
                                  ),
                                );
                              },
                            ),
                  ),
                  Padding(
                    padding: const EdgeInsets.all(16),
                    child: Row(
                      children: [
                        Expanded(
                          child: OutlinedButton(
                            onPressed: () => Navigator.pop(context),
                            child: const Text('إلغاء'),
                          ),
                        ),
                        const SizedBox(width: 12),
                        Expanded(
                          child: FilledButton(
                            onPressed: () async {
                              _savedNumbers = List.from(selectedNumbers);
                              await _saveSavedNumbers();
                              Navigator.pop(context);
                              _showSnackBar('تم حفظ الأرقام المختارة');
                              if (mounted) setState(() {});
                            },
                            child: const Text('حفظ'),
                          ),
                        ),
                      ],
                    ),
                  ),
                ],
              ),
            );
          },
        );
      },
    );
  }

  Future<void> _showBatchAmountAssignmentDialog(List<String> numbers) async {
    if (numbers.isEmpty) {
      _showSnackBar('لا توجد أرقام لتحديثها');
      return;
    }
    if (_savedAmounts.isEmpty) {
      _showSnackBar('لا توجد مبالغ محفوظة. الرجاء إضافتها في الإعدادات.');
      return;
    }

    List<NumberAmount> tempList = [];
    for (var number in numbers) {
      String? name = await _getContactNameFromNumber(number);
      final existing = _transferList.firstWhere(
        (element) => element.number == number,
        orElse: () => TransferItem(number: number, amount: 0),
      );
      tempList.add(
        NumberAmount(
          number: number,
          displayName: name,
          amount: existing.amount > 0 ? existing.amount : 0,
        ),
      );
    }

    final formKey = GlobalKey<FormState>();

    await showDialog(
      context: context,
      builder: (context) {
        return AlertDialog(
          title: const Text('تعيين مبلغ لكل رقم'),
          content: StatefulBuilder(
            builder: (context, setDialogState) {
              return Form(
                key: formKey,
                child: SizedBox(
                  width: double.maxFinite,
                  child: ListView.separated(
                    shrinkWrap: true,
                    physics: const ClampingScrollPhysics(),
                    separatorBuilder: (_, __) => const SizedBox(height: 16),
                    itemCount: tempList.length,
                    itemBuilder: (context, index) {
                      final item = tempList[index];
                      return Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(
                            item.displayName ?? item.number,
                            style: const TextStyle(
                              fontWeight: FontWeight.w600,
                              fontSize: 16,
                            ),
                            overflow: TextOverflow.ellipsis,
                          ),
                          const SizedBox(height: 8),
                          DropdownButtonFormField<int>(
                            decoration: const InputDecoration(
                              labelText: 'المبلغ',
                              isDense: true,
                            ),
                            items:
                                _savedAmounts
                                    .map(
                                      (e) => DropdownMenuItem(
                                        value: e,
                                        child: Text(
                                          _formatWithThousandsSeparator(e),
                                          style: const TextStyle(
                                            fontWeight: FontWeight.w600,
                                          ),
                                        ),
                                      ),
                                    )
                                    .toList(),
                            value: item.amount > 0 ? item.amount : null,
                            onChanged: (val) {
                              setDialogState(() {
                                item.amount = val ?? 0;
                              });
                            },
                            validator: (val) {
                              if (val == null || val <= 0) {
                                return 'يرجى اختيار مبلغ صالح';
                              }
                              return null;
                            },
                            isExpanded: true,
                          ),
                        ],
                      );
                    },
                  ),
                ),
              );
            },
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('إلغاء'),
            ),
            FilledButton(
              onPressed: () async {
                if (!formKey.currentState!.validate()) {
                  _showSnackBar('يرجى إدخال جميع المبالغ بشكل صحيح');
                  return;
                }
                for (var item in tempList) {
                  if (!_transferList.any((e) => e.number == item.number)) {
                    _transferList.add(
                      TransferItem(
                        number: item.number,
                        amount: item.amount,
                        pin:
                            (_selectedMethod == 'yemenMobile' ||
                                    _selectedMethod == 'sabafon')
                                ? '1234'
                                : null,
                      ),
                    );
                  } else {
                    final existingIndex = _transferList.indexWhere(
                      (e) => e.number == item.number,
                    );
                    if (existingIndex != -1) {
                      _transferList[existingIndex].amount = item.amount;
                      if (_selectedMethod == 'yemenMobile' ||
                          _selectedMethod == 'sabafon') {
                        _transferList[existingIndex].pin ??= '1234';
                      } else {
                        _transferList[existingIndex].pin = null;
                      }
                    }
                  }
                }
                await _saveTransferList();
                setState(() {});
                Navigator.pop(context);
                _showSnackBar('تم تحديث قائمة التحويل بالمبالغ المحددة');
              },
              child: const Text('حفظ'),
            ),
          ],
        );
      },
    );
  }

  String _formatWithThousandsSeparator(int value) {
    final s = value.toString();
    final buffer = StringBuffer();
    int len = s.length;
    for (int i = 0; i < len; i++) {
      buffer.write(s[i]);
      int posFromRight = len - i - 1;
      if (posFromRight % 3 == 0 && i != len - 1) {
        buffer.write(',');
      }
    }
    return buffer.toString();
  }

  // **التعديل الرئيسي: استخدام flutter_phone_direct_caller للاتصال التلقائي**
  Future<void> _startTransferSequence() async {
    if (_transferList.isEmpty) {
      _showSnackBar("لا توجد معاملات للتحويل");
      return;
    }

    int totalAmount = _transferList.fold(0, (sum, item) => sum + item.amount);
    if (totalAmount > _currentBalance) {
      _showSnackBar(
        "الرصيد الحالي (${_formatWithThousandsSeparator(_currentBalance)}) غير كافٍ لإجراء التحويلات (المجموع: ${_formatWithThousandsSeparator(totalAmount)})",
      );
      return;
    }

    // طلب إذن الاتصال CALL_PHONE
    if (!await Permission.phone.isGranted) {
      final status = await Permission.phone.request();
      if (!status.isGranted) {
        _showSnackBar("يجب منح إذن الاتصال لإجراء تحويل الرصيد");
        return;
      }
    }

    final phonePermissionStatus = await Permission.phone.status;
    if (!phonePermissionStatus.isGranted) {
      final status = await Permission.phone.request();
      if (!status.isGranted) {
        _showSnackBar("يجب منح إذن الاتصال لإجراء تحويل الرصيد");
        return;
      }
    }

    setState(() {
      _isTransferring = true;
      _stopTransferRequested = false;
    });
    _fabAnimationController.forward();

    _transferLogs.clear();

    List<TransferItem> tempTransferList = List.from(_transferList);
    List<String> successfullyTransferredNumbers = [];

    for (var i = 0; i < tempTransferList.length; i++) {
      if (_stopTransferRequested) {
        _showSnackBar("تم إيقاف عملية التحويل");
        break;
      }

      var item = tempTransferList[i];
      String ussdCode = _buildUssdCode(item);

      _showSnackBar(
        'جاري تحويل ${_getMethodName(_selectedMethod)}: ${_formatWithThousandsSeparator(item.amount)} إلى ${item.number} (${i + 1}/${tempTransferList.length})',
      );

      try {
        bool? called = await FlutterPhoneDirectCaller.callNumber(ussdCode);
        if (called == true) {
          _transferLogs.add({
            'number': item.number,
            'amount': item.amount,
            'success': true,
            'method': _selectedMethod,
          });
          successfullyTransferredNumbers.add(item.number);

          setState(() {
            _currentBalance -= item.amount;
          });
          await _saveCurrentBalance();

          await Future.delayed(const Duration(seconds: 10));
        } else {
          _transferLogs.add({
            'number': item.number,
            'amount': item.amount,
            'success': false,
            'method': _selectedMethod,
            'error': 'فشل في إجراء الاتصال التلقائي',
          });
        }
      } catch (e) {
        _transferLogs.add({
          'number': item.number,
          'amount': item.amount,
          'success': false,
          'method': _selectedMethod,
          'error': e.toString(),
        });
      }
    }

    setState(() {
      for (var number in successfullyTransferredNumbers) {
        _transferList.removeWhere((t) => t.number == number);
        _savedNumbers.removeWhere(
          (num) => _normalizeNumber(num) == _normalizeNumber(number),
        );
        if (_selectedQuickNumber == number) _selectedQuickNumber = null;
      }
    });

    await _saveTransferList();
    await _saveSavedNumbers();

    setState(() {
      _isTransferring = false;
    });
    _fabAnimationController.reverse();

    if (!_stopTransferRequested) {
      _showSnackBar("تمت جميع عمليات التحويل");
    }
  }

  String _normalizeNumber(String number) {
    return number.replaceAll(RegExp(r'[^\d+]'), '');
  }

  String _getMethodName(String method) {
    switch (method) {
      case 'yemenMobile':
        return 'يمن موبايل';
      case 'y':
        return 'واي';
      case 'sabafon':
        return 'سبأفون';
      case 'you':
        return 'يو';
      default:
        return method;
    }
  }

  String _buildUssdCode(TransferItem item) {
    final number = item.number;
    final amount = item.amount.toString();
    final pin = item.pin ?? '1234';

    switch (_selectedMethod) {
      case 'yemenMobile':
        return '*888*$amount*$number*$pin#'.replaceAll(
          '#',
          Uri.encodeComponent('#'),
        );
      case 'y':
        return '*109*$amount*$number#'.replaceAll(
          '#',
          Uri.encodeComponent('#'),
        );
      case 'sabafon':
        return '*123*$pin*$number*$amount#'.replaceAll(
          '#',
          Uri.encodeComponent('#'),
        );
      case 'you':
        return '*130*$number*$amount#'.replaceAll(
          '#',
          Uri.encodeComponent('#'),
        );
      default:
        return '';
    }
  }

  void _showTransferLogsDialog() {
    showDialog(
      context: context,
      builder: (context) {
        return AlertDialog(
          title: const Text('سجل عمليات التحويل'),
          content: SizedBox(
            width: double.maxFinite,
            child:
                _transferLogs.isEmpty
                    ? Center(
                      child: Text(
                        'لا توجد عمليات تحويل حتى الآن',
                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                          color: Theme.of(context).colorScheme.onSurfaceVariant,
                        ),
                      ),
                    )
                    : ListView.builder(
                      shrinkWrap: true,
                      physics: const ClampingScrollPhysics(),
                      itemCount: _transferLogs.length,
                      itemBuilder: (_, i) {
                        final log = _transferLogs[i];
                        final success = log['success'] as bool;
                        return ListTile(
                          contentPadding: EdgeInsets.zero,
                          leading: Container(
                            width: 36,
                            height: 36,
                            decoration: BoxDecoration(
                              color:
                                  success
                                      ? Theme.of(
                                        context,
                                      ).colorScheme.primaryContainer
                                      : Theme.of(
                                        context,
                                      ).colorScheme.errorContainer,
                              shape: BoxShape.circle,
                            ),
                            child: Icon(
                              success ? Icons.check : Icons.close,
                              color:
                                  success
                                      ? Theme.of(context).colorScheme.primary
                                      : Theme.of(context).colorScheme.error,
                            ),
                          ),
                          title: Text(
                            '${_getMethodName(log['method'])} - ${log['number']}',
                            style: const TextStyle(fontWeight: FontWeight.w600),
                          ),
                          subtitle: Text(
                            'المبلغ: ${_formatWithThousandsSeparator(log['amount'] ?? 0)}',
                          ),
                        );
                      },
                    ),
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('إغلاق'),
            ),
          ],
        );
      },
    );
  }

  void _showAmountsManagementDialog() async {
    final amountsController = TextEditingController();

    await showDialog(
      context: context,
      builder: (context) {
        return AlertDialog(
          title: const Text('إدارة المبالغ المحفوظة'),
          content: StatefulBuilder(
            builder: (context, setDialogState) {
              return Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  if (_savedAmounts.isEmpty)
                    Text(
                      'لا توجد مبالغ محفوظة حالياً',
                      style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                        color: Theme.of(context).colorScheme.onSurfaceVariant,
                      ),
                    ),
                  if (_savedAmounts.isNotEmpty)
                    Wrap(
                      spacing: 8,
                      runSpacing: 6,
                      children:
                          _savedAmounts
                              .map(
                                (amt) => Chip(
                                  label: Text(
                                    _formatWithThousandsSeparator(amt),
                                    style: const TextStyle(
                                      fontWeight: FontWeight.w600,
                                    ),
                                  ),
                                  onDeleted: () {
                                    setDialogState(() {
                                      _savedAmounts.remove(amt);
                                    });
                                  },
                                  deleteIconColor:
                                      Theme.of(context).colorScheme.error,
                                ),
                              )
                              .toList(),
                    ),
                  const SizedBox(height: 16),
                  TextField(
                    controller: amountsController,
                    keyboardType: TextInputType.number,
                    inputFormatters: [ThousandsSeparatorInputFormatter()],
                    decoration: InputDecoration(
                      labelText: 'إضافة مبلغ جديد',
                      prefixIcon: const Icon(Icons.add_circle_outline),
                      suffixIcon: IconButton(
                        icon: const Icon(Icons.add_circle_rounded),
                        onPressed: () {
                          final raw = amountsController.text.replaceAll(
                            ',',
                            '',
                          );
                          final numAmount = int.tryParse(raw);
                          if (numAmount == null || numAmount <= 0) {
                            _showSnackBar('يرجى إدخال مبلغ صحيح أكبر من صفر');
                            return;
                          }
                          if (_savedAmounts.contains(numAmount)) {
                            _showSnackBar('هذا المبلغ موجود بالفعل');
                            return;
                          }
                          setDialogState(() {
                            _savedAmounts.add(numAmount);
                            _savedAmounts.sort();
                            amountsController.clear();
                          });
                        },
                      ),
                    ),
                    onSubmitted: (value) {
                      final raw = value.replaceAll(',', '');
                      final numAmount = int.tryParse(raw);
                      if (numAmount == null || numAmount <= 0) {
                        _showSnackBar('يرجى إدخال مبلغ صحيح أكبر من صفر');
                        return;
                      }
                      if (_savedAmounts.contains(numAmount)) {
                        _showSnackBar('هذا المبلغ موجود بالفعل');
                        return;
                      }
                      setDialogState(() {
                        _savedAmounts.add(numAmount);
                        _savedAmounts.sort();
                        amountsController.clear();
                      });
                    },
                  ),
                ],
              );
            },
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('إغلاق'),
            ),
            FilledButton(
              onPressed: () async {
                await _saveSavedAmounts();
                Navigator.pop(context);
                _showSnackBar('تم حفظ المبالغ بنجاح');
              },
              child: const Text('حفظ'),
            ),
          ],
        );
      },
    );
  }

  void _stopTransferSequence() {
    if (_isTransferring) {
      setState(() {
        _stopTransferRequested = true;
      });
      _showSnackBar("تم طلب إيقاف عملية التحويل");
    }
  }

  Widget _buildCurrentTransferMethodSection() {
    final methodNames = {
      'yemenMobile': 'يمن موبايل',
      'y': 'واي',
      'sabafon': 'سبأفون',
      'you': 'يو',
    };

    final methodIcons = {
      'yemenMobile': Icons.sim_card,
      'y': Icons.sim_card,
      'sabafon': Icons.sim_card,
      'you': Icons.sim_card,
    };

    final methodName = methodNames[_selectedMethod] ?? _selectedMethod;
    final methodIcon = methodIcons[_selectedMethod] ?? Icons.sync;

    return Card(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              children: [
                Icon(
                  Icons.swap_horiz,
                  color: Theme.of(context).colorScheme.primary,
                ),
                const SizedBox(width: 12),
                Text(
                  'طريقة التحويل الحالية',
                  style: Theme.of(
                    context,
                  ).textTheme.titleLarge?.copyWith(fontWeight: FontWeight.bold),
                ),
              ],
            ),
            const SizedBox(height: 16),
            Row(
              children: [
                Container(
                  decoration: BoxDecoration(
                    color: Theme.of(context).colorScheme.primaryContainer,
                    borderRadius: BorderRadius.circular(12),
                  ),
                  padding: const EdgeInsets.all(12),
                  child: Icon(
                    methodIcon,
                    size: 40,
                    color: Theme.of(context).colorScheme.primary,
                  ),
                ),
                const SizedBox(width: 16),
                Expanded(
                  child: Text(
                    methodName,
                    style: Theme.of(context).textTheme.headlineSmall?.copyWith(
                      fontWeight: FontWeight.bold,
                      color: Theme.of(context).colorScheme.primary,
                    ),
                  ),
                ),
                FilledButton.tonal(
                  onPressed: () async {
                    final selected = await showDialog<String>(
                      context: context,
                      builder: (context) {
                        return SimpleDialog(
                          title: const Text('اختر طريقة التحويل'),
                          children:
                              methodNames.entries.map((entry) {
                                final isSelected = entry.key == _selectedMethod;
                                return SimpleDialogOption(
                                  onPressed:
                                      () => Navigator.pop(context, entry.key),
                                  child: Row(
                                    children: [
                                      Icon(
                                        methodIcons[entry.key],
                                        color:
                                            isSelected
                                                ? Theme.of(
                                                  context,
                                                ).colorScheme.primary
                                                : Theme.of(
                                                  context,
                                                ).colorScheme.onSurfaceVariant,
                                      ),
                                      const SizedBox(width: 12),
                                      Text(entry.value),
                                      if (isSelected)
                                        const Padding(
                                          padding: EdgeInsets.only(left: 12),
                                          child: Icon(Icons.check),
                                        ),
                                    ],
                                  ),
                                );
                              }).toList(),
                        );
                      },
                    );
                    if (selected != null && selected != _selectedMethod) {
                      setState(() {
                        _selectedMethod = selected;
                        if (_selectedMethod == 'yemenMobile' ||
                            _selectedMethod == 'sabafon') {
                          for (var item in _transferList) {
                            item.pin ??= '1234';
                          }
                        } else {
                          for (var item in _transferList) {
                            item.pin = null;
                          }
                        }
                        _saveSelectedMethod();
                      });
                      _showSnackBar(
                        'تم تغيير طريقة التحويل إلى ${methodNames[selected]}',
                      );
                    }
                  },
                  child: const Text('تغيير'),
                ),
              ],
            ),
            const SizedBox(height: 8),
            Text(
              'سيتم استخدام هذه الطريقة لأوامر USSD في عمليات تحويل الرصيد المتعددة.',
              style: Theme.of(context).textTheme.bodySmall,
            ),
          ],
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    Widget fabChild =
        _isTransferring
            ? Row(
              mainAxisSize: MainAxisSize.min,
              children: [
                SizedBox(
                  width: 20,
                  height: 20,
                  child: CircularProgressIndicator(
                    color: Theme.of(context).colorScheme.onPrimary,
                    strokeWidth: 3,
                  ),
                ),
                const SizedBox(width: 8),
                const Text(
                  'إيقاف التحويل',
                  style: TextStyle(fontWeight: FontWeight.bold),
                ),
              ],
            )
            : Row(
              mainAxisSize: MainAxisSize.min,
              children: const [
                Icon(Icons.send_rounded, size: 20),
                SizedBox(width: 8),
                Text(
                  'إجراء التحويلات',
                  style: TextStyle(fontWeight: FontWeight.bold),
                ),
              ],
            );

    return Scaffold(
      appBar: AppBar(
        title: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text(
              'تحويل رصيد متعدد',
              style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600),
            ),
            Text(
              'الرصيد: ${_formatWithThousandsSeparator(_currentBalance)}',
              style: TextStyle(fontSize: 16, fontWeight: FontWeight.w500),
            ),
          ],
        ),
        actions: [
          Tooltip(
            message: 'إدارة المبالغ المحفوظة',
            child: IconButton(
              icon: const Icon(Icons.attach_money_rounded),
              onPressed: _showAmountsManagementDialog,
            ),
          ),
          Tooltip(
            message: 'إدارة الأرقام المحفوظة',
            child: IconButton(
              icon: const Icon(Icons.contact_page_rounded),
              onPressed: _showSavedNumbersSelection,
            ),
          ),
          const SizedBox(width: 8), // مسافة إضافية للحواف
        ],
        flexibleSpace: Container(
          decoration: BoxDecoration(
            gradient: LinearGradient(
              colors: [
                lightColorScheme.primary,
                lightColorScheme.primaryContainer,
              ],
              begin: Alignment.topLeft,
              end: Alignment.bottomRight,
            ),
          ),
        ),
        elevation: 4,
        shadowColor: lightColorScheme.primary.withOpacity(0.3),
      ),
      floatingActionButton: ScaleTransition(
        scale: _fabAnimation,
        child: FloatingActionButton.extended(
          onPressed:
              _isTransferring ? _stopTransferSequence : _startTransferSequence,
          icon: _isTransferring ? null : const Icon(Icons.send),
          label: fabChild,
          elevation: 2,
          backgroundColor: Theme.of(context).colorScheme.primary,
          foregroundColor: Theme.of(context).colorScheme.onPrimary,
        ),
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
      bottomNavigationBar:
          (_transferLogs.isNotEmpty)
              ? SafeArea(
                child: Padding(
                  padding: const EdgeInsets.all(16),
                  child: FilledButton.icon(
                    icon: const Icon(Icons.history_rounded),
                    label: const Text('عرض سجل التحويلات'),
                    onPressed: _showTransferLogsDialog,
                  ),
                ),
              )
              : null,
      body: Column(
        children: [
          _buildCurrentTransferMethodSection(),
          if (_savedNumbers.isNotEmpty)
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    'اختيار رقم سريع للتحويل',
                    style: Theme.of(context).textTheme.titleMedium?.copyWith(
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                  const SizedBox(height: 8),
                  SizedBox(
                    height: 80,
                    child: FutureBuilder<List<Map<String, String?>>>(
                      future: Future.wait(
                        _savedNumbers.map((number) async {
                          final name = await _getContactNameFromNumber(number);
                          return {'number': number, 'name': name};
                        }).toList(),
                      ),
                      builder: (context, snapshot) {
                        if (!snapshot.hasData) {
                          return const Center(
                            child: CircularProgressIndicator(),
                          );
                        }
                        final data = snapshot.data!;
                        return ListView.separated(
                          scrollDirection: Axis.horizontal,
                          itemCount: data.length,
                          separatorBuilder:
                              (_, __) => const SizedBox(width: 12),
                          itemBuilder: (context, index) {
                            final item = data[index];
                            final number = item['number']!;
                            final displayText =
                                item['name']?.isNotEmpty == true
                                    ? item['name']
                                    : number;
                            final bool isSelected =
                                _selectedQuickNumber == number;

                            String initials = '';
                            if (item['name']?.isNotEmpty == true) {
                              final parts = displayText!.trim().split(' ');
                              if (parts.length == 1) {
                                initials = parts[0][0];
                              } else if (parts.length > 1) {
                                initials = parts[0][0] + parts[1][0];
                              }
                            } else {
                              initials = number.substring(0, 2);
                            }
                            initials = initials.toUpperCase();

                            return GestureDetector(
                              onTap: () {
                                setState(() {
                                  if (isSelected) {
                                    _selectedQuickNumber = null;
                                  } else {
                                    _selectedQuickNumber = number;
                                    if (!_transferList.any(
                                      (e) => e.number == number,
                                    )) {
                                      final defaultAmount =
                                          _savedAmounts.isNotEmpty
                                              ? _savedAmounts.first
                                              : 0;
                                      _transferList.add(
                                        TransferItem(
                                          number: number,
                                          amount: defaultAmount,
                                          pin:
                                              (_selectedMethod ==
                                                          'yemenMobile' ||
                                                      _selectedMethod ==
                                                          'sabafon')
                                                  ? '1234'
                                                  : null,
                                        ),
                                      );
                                      _saveTransferList();
                                    }
                                  }
                                });
                              },
                              child: Container(
                                width: 140,
                                padding: const EdgeInsets.symmetric(
                                  horizontal: 12,
                                  vertical: 8,
                                ),
                                decoration: BoxDecoration(
                                  color:
                                      isSelected
                                          ? Theme.of(
                                            context,
                                          ).colorScheme.primary
                                          : Theme.of(
                                            context,
                                          ).colorScheme.surfaceVariant,
                                  borderRadius: BorderRadius.circular(12),
                                ),
                                child: Row(
                                  children: [
                                    CircleAvatar(
                                      radius: 20,
                                      backgroundColor:
                                          isSelected
                                              ? Theme.of(
                                                context,
                                              ).colorScheme.surface
                                              : Theme.of(
                                                context,
                                              ).colorScheme.primary,
                                      child: Text(
                                        initials,
                                        style: TextStyle(
                                          color:
                                              isSelected
                                                  ? Theme.of(
                                                    context,
                                                  ).colorScheme.primary
                                                  : Theme.of(
                                                    context,
                                                  ).colorScheme.onPrimary,
                                          fontWeight: FontWeight.bold,
                                        ),
                                      ),
                                    ),
                                    const SizedBox(width: 12),
                                    Expanded(
                                      child: Text(
                                        displayText ?? number,
                                        style: TextStyle(
                                          color:
                                              isSelected
                                                  ? Theme.of(
                                                    context,
                                                  ).colorScheme.onPrimary
                                                  : Theme.of(
                                                    context,
                                                  ).colorScheme.onSurface,
                                          fontWeight: FontWeight.w600,
                                        ),
                                        maxLines: 2,
                                        overflow: TextOverflow.ellipsis,
                                      ),
                                    ),
                                  ],
                                ),
                              ),
                            );
                          },
                        );
                      },
                    ),
                  ),
                  // زر حذف جهة الاتصال المحددة يظهر فقط عند اختيار رقم سريع
                  if (_selectedQuickNumber != null)
                    Padding(
                      padding: const EdgeInsets.only(top: 12),
                      child: Align(
                        alignment: Alignment.centerRight,
                        child: OutlinedButton.icon(
                          icon: const Icon(Icons.delete_forever_rounded),
                          label: const Text('حذف الرقم المختار'),
                          style: OutlinedButton.styleFrom(
                            foregroundColor:
                                Theme.of(context).colorScheme.error,
                            side: BorderSide(
                              color: Theme.of(context).colorScheme.error,
                            ),
                          ),
                          onPressed: () async {
                            final confirm = await showDialog<bool>(
                              context: context,
                              builder:
                                  (context) => AlertDialog(
                                    title: const Text('تأكيد الحذف'),
                                    content: const Text(
                                      'هل أنت متأكد من حذف الرقم المختار من الأرقام المحفوظة؟',
                                    ),
                                    actions: [
                                      TextButton(
                                        onPressed:
                                            () => Navigator.pop(context, false),
                                        child: const Text('إلغاء'),
                                      ),
                                      FilledButton(
                                        onPressed:
                                            () => Navigator.pop(context, true),
                                        child: const Text('حذف'),
                                      ),
                                    ],
                                  ),
                            );

                            if (confirm == true) {
                              setState(() {
                                _savedNumbers.removeWhere(
                                  (num) =>
                                      _normalizeNumber(num) ==
                                      _normalizeNumber(_selectedQuickNumber!),
                                );
                                _transferList.removeWhere(
                                  (item) => item.number == _selectedQuickNumber,
                                );
                                _selectedQuickNumber = null;
                              });
                              await _saveSavedNumbers();
                              await _saveTransferList();
                              _showSnackBar('تم حذف الرقم من الأرقام المحفوظة');
                            }
                          },
                        ),
                      ),
                    ),
                ],
              ),
            ),
          const Divider(height: 1),
          Expanded(
            child:
                _transferList.isEmpty
                    ? Center(
                      child: Column(
                        mainAxisSize: MainAxisSize.min,
                        children: [
                          Icon(
                            Icons.phone_android_rounded,
                            size: 64,
                            color:
                                Theme.of(context).colorScheme.onSurfaceVariant,
                          ),
                          const SizedBox(height: 16),
                          Text(
                            'لا توجد عمليات تحويل',
                            style: Theme.of(
                              context,
                            ).textTheme.titleMedium?.copyWith(
                              color:
                                  Theme.of(
                                    context,
                                  ).colorScheme.onSurfaceVariant,
                            ),
                          ),
                          const SizedBox(height: 8),
                          Text(
                            'يمكنك إضافة الأرقام المفضلة لإجراء التحويلات بسهولة.',
                            style: Theme.of(
                              context,
                            ).textTheme.bodyMedium?.copyWith(
                              color:
                                  Theme.of(
                                    context,
                                  ).colorScheme.onSurfaceVariant,
                            ),
                          ),
                        ],
                      ),
                    )
                    : ListView.builder(
                      physics: const BouncingScrollPhysics(),
                      itemCount: _transferList.length,
                      itemBuilder: (context, index) {
                        final item = _transferList[index];
                        return Dismissible(
                          key: Key('${item.number}_$index'),
                          background: Container(
                            margin: const EdgeInsets.symmetric(
                              horizontal: 16,
                              vertical: 8,
                            ),
                            decoration: BoxDecoration(
                              color:
                                  Theme.of(context).colorScheme.errorContainer,
                              borderRadius: BorderRadius.circular(12),
                            ),
                            alignment: Alignment.centerRight,
                            padding: const EdgeInsets.only(right: 24),
                            child: Icon(
                              Icons.delete_rounded,
                              color: Theme.of(context).colorScheme.error,
                            ),
                          ),
                          direction: DismissDirection.endToStart,
                          onDismissed: (direction) => _removeTransferAt(index),
                          child: Card(
                            margin: const EdgeInsets.symmetric(
                              horizontal: 16,
                              vertical: 8,
                            ),
                            child: ListTile(
                              leading: Container(
                                width: 40,
                                height: 40,
                                decoration: BoxDecoration(
                                  color:
                                      Theme.of(
                                        context,
                                      ).colorScheme.primaryContainer,
                                  shape: BoxShape.circle,
                                ),
                                child: Icon(
                                  Icons.phone_android_rounded,
                                  color: Theme.of(context).colorScheme.primary,
                                ),
                              ),
                              title: Text(
                                item.number,
                                style: const TextStyle(
                                  fontWeight: FontWeight.w600,
                                ),
                              ),
                              subtitle: Text(
                                'المبلغ: ${_formatWithThousandsSeparator(item.amount)}',
                              ),
                              trailing: Row(
                                mainAxisSize: MainAxisSize.min,
                                children: [
                                  IconButton(
                                    icon: Icon(
                                      Icons.edit_rounded,
                                      color:
                                          Theme.of(context).colorScheme.primary,
                                    ),
                                    onPressed: () => _editTransfer(index),
                                    tooltip: 'تعديل',
                                  ),
                                  IconButton(
                                    icon: Icon(
                                      Icons.delete_forever_rounded,
                                      color:
                                          Theme.of(context).colorScheme.error,
                                    ),
                                    onPressed: () => _removeTransferAt(index),
                                    tooltip: 'حذف',
                                  ),
                                ],
                              ),
                            ),
                          ),
                        );
                      },
                    ),
          ),
        ],
      ),
    );
  }

  void _removeTransferAt(int index) async {
    setState(() {
      _transferList.removeAt(index);
    });
    await _saveTransferList();
  }

  void _editTransfer(int index) {
    var item = _transferList[index];
    int? selectedAmount = item.amount;
    final pinController = TextEditingController(text: item.pin ?? '1234');

    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      builder: (context) {
        return StatefulBuilder(
          builder: (context, setModal) {
            return Padding(
              padding: EdgeInsets.only(
                bottom: MediaQuery.of(context).viewInsets.bottom,
                top: 16,
                left: 16,
                right: 16,
              ),
              child: Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  Row(
                    children: [
                      Expanded(
                        child: Text(
                          "تعديل التحويل",
                          style: Theme.of(context).textTheme.titleLarge
                              ?.copyWith(fontWeight: FontWeight.bold),
                        ),
                      ),
                      IconButton(
                        icon: const Icon(Icons.close_rounded),
                        onPressed: () => Navigator.pop(context),
                        tooltip: 'إغلاق',
                      ),
                    ],
                  ),
                  Text(
                    item.number,
                    style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                      color: Theme.of(context).colorScheme.onSurfaceVariant,
                    ),
                  ),
                  const Divider(height: 24),
                  Align(
                    alignment: Alignment.centerRight,
                    child: Text(
                      'اختر المبلغ',
                      style: Theme.of(context).textTheme.titleMedium?.copyWith(
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ),
                  const SizedBox(height: 12),
                  Wrap(
                    spacing: 8,
                    children:
                        _savedAmounts
                            .map(
                              (amt) => ChoiceChip(
                                label: Text(
                                  _formatWithThousandsSeparator(amt),
                                  style: TextStyle(
                                    fontWeight: FontWeight.w600,
                                    color:
                                        selectedAmount == amt
                                            ? Theme.of(
                                              context,
                                            ).colorScheme.onPrimary
                                            : Theme.of(
                                              context,
                                            ).colorScheme.primary,
                                  ),
                                ),
                                selected: selectedAmount == amt,
                                onSelected: (_) {
                                  setModal(() {
                                    selectedAmount = amt;
                                  });
                                },
                              ),
                            )
                            .toList(),
                  ),
                  if (_selectedMethod == 'yemenMobile' ||
                      _selectedMethod == 'sabafon')
                    Padding(
                      padding: const EdgeInsets.fromLTRB(0, 24, 0, 16),
                      child: TextField(
                        controller: pinController,
                        keyboardType: TextInputType.number,
                        decoration: const InputDecoration(
                          labelText: "الرقم السري",
                          prefixIcon: Icon(Icons.lock_outline_rounded),
                        ),
                        obscureText: true,
                      ),
                    ),
                  const SizedBox(height: 16),
                  Row(
                    children: [
                      Expanded(
                        child: OutlinedButton(
                          onPressed: () => Navigator.pop(context),
                          child: const Text("إلغاء"),
                        ),
                      ),
                      const SizedBox(width: 12),
                      Expanded(
                        child: FilledButton(
                          onPressed: () async {
                            if (selectedAmount == null ||
                                selectedAmount! <= 0) {
                              _showSnackBar(
                                'يرجى اختيار مبلغ صحيح أكبر من صفر',
                              );
                              return;
                            }
                            setState(() {
                              _transferList[index].amount = selectedAmount!;
                              if (_selectedMethod == 'yemenMobile' ||
                                  _selectedMethod == 'sabafon') {
                                final pinStr = pinController.text.trim();
                                _transferList[index].pin =
                                    pinStr.isEmpty ? '1234' : pinStr;
                              } else {
                                _transferList[index].pin = null;
                              }
                            });
                            await _saveTransferList();
                            Navigator.pop(context);
                          },
                          child: const Text("حفظ"),
                        ),
                      ),
                    ],
                  ),
                  const SizedBox(height: 16),
                ],
              ),
            );
          },
        );
      },
    );
  }
}