import 'package:siro_rider/constant/box_name.dart';
import 'package:siro_rider/main.dart';

class CountryLogic {
  /// Formats the phone number based on the country's dialing rules.
  static String formatPhone(String phone, String country) {
    phone = phone.replaceAll(RegExp(r'[ \-\(\)\+]'), '').trim();

    if (country == 'Egypt') {
      // Rule: 010, 011, 012, 015 -> 2010, 2011, 2012, 2015
      if (phone.startsWith('0020')) phone = phone.replaceFirst('0020', '20');
      if (phone.startsWith('01') && phone.length >= 10) {
        return '20${phone.substring(1)}';
      }
      if (phone.startsWith('1') &&
          phone.length >= 9 &&
          !phone.startsWith('20')) {
        return '20$phone';
      }
      if (!phone.startsWith('20') && phone.length > 8) return '20$phone';
    } else if (country == 'Jordan') {
      // Rule: 07x -> 9627x
      if (phone.startsWith('00962')) phone = phone.replaceFirst('00962', '962');
      if (phone.startsWith('07') && phone.length >= 9) {
        return '962${phone.substring(1)}';
      }
      if (phone.startsWith('7') &&
          phone.length >= 8 &&
          !phone.startsWith('962')) {
        return '962$phone';
      }
      if (!phone.startsWith('962') && phone.length > 7) return '962$phone';
    } else {
      // Default to Syria
      if (phone.startsWith('00963')) phone = phone.replaceFirst('00963', '963');
      if (phone.startsWith('0963')) phone = phone.replaceFirst('0963', '963');
      if (phone.startsWith('096309')) {
        phone = phone.replaceFirst('096309', '963');
      }
      if (phone.startsWith('96309')) phone = '9639${phone.substring(5)}';
      if (phone.startsWith('9630')) phone = '9639${phone.substring(4)}';
      if (phone.startsWith('9639') && phone.length == 12) return phone;
      if (phone.startsWith('963') &&
          phone.length > 3 &&
          !phone.startsWith('9639')) {
        phone = '9639${phone.substring(3)}';
      }
      if (phone.startsWith('09')) return '963${phone.substring(1)}';
      if (phone.startsWith('9') && phone.length == 9) return '963$phone';
      if (phone.startsWith('0') && phone.length == 10) {
        return '963${phone.substring(1)}';
      }
    }
    return phone;
  }

  /// Returns the default country prefix (EG, JO, SY) for UI initial selection.
  static String getCountryPrefix(String country) {
    if (country == 'Egypt') return 'EG';
    if (country == 'Jordan') return 'JO';
    return 'SY';
  }

  /// Returns the default emergency number for the country.
  static String getEmergencyNumber(String country) {
    if (country == 'Egypt') return '122';
    if (country == 'Jordan') return '911';
    return '112'; // Syria
  }

  /// Returns the hint text for phone inputs based on the country.
  static String getPhoneHint(String country) {
    if (country == 'Egypt') return 'e.g. 01012345678 (Default +20)';
    if (country == 'Jordan') return 'e.g. 0791234567 (Default +962)';
    return 'e.g. 0912345678 (Default +963)'; // Syria
  }

  /// Helper to format phone using the current country in box.
  static String formatCurrentCountryPhone(String phone) {
    String cleanPhone = phone.replaceAll(RegExp(r'[ \-\(\)]'), '').trim();
    if (cleanPhone.startsWith('+963') || cleanPhone.startsWith('00963')) {
      return formatPhone(cleanPhone, 'Syria');
    }
    if (cleanPhone.startsWith('+20') || cleanPhone.startsWith('0020')) {
      return formatPhone(cleanPhone, 'Egypt');
    }
    if (cleanPhone.startsWith('+962') || cleanPhone.startsWith('00962')) {
      return formatPhone(cleanPhone, 'Jordan');
    }

    final country = box.read(BoxName.countryCode) ?? 'Syria';
    return formatPhone(cleanPhone, country);
  }
}