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lib/core/constants/dimensions.dart

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+import 'package:flutter/material.dart';
+
+class AppDimensions {
+  // Private constructor to prevent instantiation
+  AppDimensions._();
+
+  // Screen breakpoints
+  static const double smallScreenWidth = 460;
+  static const double tabletWidth = 600;
+  static const double largeScreenWidth = 1200;
+
+  // Padding values
+  static const double paddingXS = 4.0;
+  static const double paddingS = 8.0;
+  static const double paddingM = 12.0;
+  static const double paddingL = 16.0;
+  static const double paddingXL = 25.0;
+  static const double paddingXXL = 30.0;
+  static const double paddingXXXL = 30.0;
+  static const double paddingHuge = 40.0;
+
+  // Spacing values
+  static const double spacingXS = 4.0;
+  static const double spacingS = 8.0;
+  static const double spacingM = 12.0;
+  static const double spacingL = 16.0;
+  static const double spacingXL = 20.0;
+  static const double spacingXXL = 23.0;
+  static const double spacingXXXL = 30.0;
+  static const double spacingHuge = 40.0;
+
+  // Font sizes
+  static const double fontSizeXS = 10.0;
+  static const double fontSizeS = 12.0;
+  static const double fontSizeM = 14.0;
+  static const double fontSizeL = 16.0;
+  static const double fontSizeXL = 18.0;
+  static const double fontSizeXXL = 20.0;
+  static const double fontSizeXXXL = 22.0;
+  static const double fontSizeHuge = 24.0;
+  static const double fontSizeTitle = 36.0;
+  static const double fontSizeTitleLarge = 42.0;
+
+  // Icon sizes
+  static const double iconSizeXS = 16.0;
+  static const double iconSizeS = 20.0;
+  static const double iconSizeM = 24.0;
+  static const double iconSizeL = 30.0;
+  static const double iconSizeXL = 33.0;
+  static const double iconSizeXXL = 40.0;
+  static const double iconSizeHuge = 60.0;
+
+  // Border radius
+  static const double radiusXS = 3.0;
+  static const double radiusS = 5.0;
+  static const double radiusM = 8.0;
+  static const double radiusL = 10.0;
+  static const double radiusXL = 15.0;
+  static const double radiusXXL = 20.0;
+  static const double radiusCircle = 50.0;
+
+  // Button heights
+  static const double buttonHeightS = 40.0;
+  static const double buttonHeightM = 48.0;
+  static const double buttonHeightL = 56.0;
+
+  // Image heights
+  static const double imageHeightS = 150.0;
+  static const double imageHeightM = 200.0;
+  static const double imageHeightL = 250.0;
+
+  // Page indicator sizes
+  static const double pageIndicatorSize = 10.0;
+  static const double pageIndicatorSizeActive = 16.0;
+
+  // Responsive methods
+  static bool isSmallScreen(BuildContext context) {
+    return MediaQuery.of(context).size.width < smallScreenWidth;
+  }
+
+  static bool isTablet(BuildContext context) {
+    final width = MediaQuery.of(context).size.width;
+    return width >= tabletWidth && width < largeScreenWidth;
+  }
+
+  static bool isLargeScreen(BuildContext context) {
+    return MediaQuery.of(context).size.width >= largeScreenWidth;
+  }
+
+  // Responsive padding
+  static double getHorizontalPadding(BuildContext context) {
+    return isSmallScreen(context) ? paddingXL : paddingXXL;
+  }
+
+  static double getVerticalPadding(BuildContext context) {
+    return isSmallScreen(context) ? paddingL : paddingXXL;
+  }
+
+  // Responsive font size
+  static double getTitleFontSize(BuildContext context) {
+    final screenWidth = MediaQuery.of(context).size.width;
+    if (isSmallScreen(context)) {
+      return screenWidth * 0.07;
+    } else if (isTablet(context)) {
+      return fontSizeTitleLarge;
+    } else {
+      return screenWidth * 0.08;
+    }
+  }
+
+  static double getSubtitleFontSize(BuildContext context) {
+    return isSmallScreen(context) ? fontSizeM : fontSizeL;
+  }
+
+  static double getBodyFontSize(BuildContext context) {
+    return isSmallScreen(context) ? fontSizeS : fontSizeM;
+  }
+
+  // Responsive spacing
+  static double getVerticalSpacing(BuildContext context) {
+    return isSmallScreen(context) ? spacingL : spacingXXL;
+  }
+
+  static double getSmallVerticalSpacing(BuildContext context) {
+    return isSmallScreen(context) ? spacingM : spacingL;
+  }
+
+  // Responsive icon size
+  static double getIconSize(BuildContext context) {
+    return isSmallScreen(context) ? iconSizeM : iconSizeXL;
+  }
+
+  // Screen dimensions
+  static double screenWidth(BuildContext context) {
+    return MediaQuery.of(context).size.width;
+  }
+
+  static double screenHeight(BuildContext context) {
+    return MediaQuery.of(context).size.height;
+  }
+
+  // Safe area padding
+  static EdgeInsets getSafeAreaPadding(BuildContext context) {
+    return MediaQuery.of(context).padding;
+  }
+}

lib/core/di/injection_container.dart

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+import 'package:dio/dio.dart';
+import 'package:get_it/get_it.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import '../network/api_client.dart';
+
+final sl = GetIt.instance;
+
+Future<void> initializeDependencies() async {
+  // External
+  sl.registerLazySingleton<Dio>(() => Dio());
+  
+  // SharedPreferences
+  final sharedPreferences = await SharedPreferences.getInstance();
+  sl.registerLazySingleton<SharedPreferences>(() => sharedPreferences);
+
+  // Core
+  sl.registerLazySingleton<ApiClient>(() => ApiClient(dio: sl()));
+
+  // Data sources will be registered here
+  // Example:
+  // sl.registerLazySingleton<AuthRemoteDataSource>(
+  //   () => AuthRemoteDataSourceImpl(apiClient: sl()),
+  // );
+
+  // Repositories will be registered here
+  // Example:
+  // sl.registerLazySingleton<AuthRepository>(
+  //   () => AuthRepositoryImpl(
+  //     remoteDataSource: sl(),
+  //     localDataSource: sl(),
+  //   ),
+  // );
+
+  // Use cases will be registered here
+  // Example:
+  // sl.registerLazySingleton(() => LoginUseCase(repository: sl()));
+
+  // Blocs will be registered here
+  // Example:
+  // sl.registerFactory(() => LoginBloc(loginUseCase: sl()));
+}

lib/core/enums/app_enums.dart

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+// Add your app-specific enums here
+// Example:
+// enum UserRole {
+//   admin,
+//   user,
+//   guest,
+// }

lib/core/error/exceptions.dart

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+class ServerException implements Exception {
+  final String message;
+  final int? statusCode;
+
+  ServerException({required this.message, this.statusCode});
+}
+
+class NetworkException implements Exception {
+  final String message;
+
+  NetworkException({required this.message});
+}
+
+class ValidationException implements Exception {
+  final String message;
+
+  ValidationException({required this.message});
+}

lib/core/error/failures.dart

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+import 'package:equatable/equatable.dart';
+
+abstract class Failure extends Equatable {
+  final String message;
+
+  const Failure(this.message);
+
+  @override
+  List<Object> get props => [message];
+}
+
+class ServerFailure extends Failure {
+  const ServerFailure(super.message);
+}
+
+class NetworkFailure extends Failure {
+  const NetworkFailure(super.message);
+}
+
+class ValidationFailure extends Failure {
+  const ValidationFailure(super.message);
+}

lib/core/network/api_client.dart

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+import 'package:dio/dio.dart';
+
+class ApiClient {
+  final Dio dio;
+  static const String baseUrl = 'YOUR_API_BASE_URL_HERE';
+
+  ApiClient({required this.dio}) {
+    dio.options = BaseOptions(
+      baseUrl: baseUrl,
+      connectTimeout: const Duration(seconds: 30),
+      receiveTimeout: const Duration(seconds: 30),
+      headers: {
+        'Content-Type': 'application/json',
+        'accept': 'text/plain',
+      },
+    );
+
+    // Add interceptors for logging and error handling
+    dio.interceptors.add(
+      LogInterceptor(
+        requestBody: true,
+        responseBody: true,
+        error: true,
+        requestHeader: true,
+        responseHeader: false,
+      ),
+    );
+  }
+
+  Future<Response> post(
+    String path, {
+    dynamic data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+  }) async {
+    try {
+      final response = await dio.post(
+        path,
+        data: data,
+        queryParameters: queryParameters,
+        options: options,
+      );
+      return response;
+    } catch (e) {
+      rethrow;
+    }
+  }
+
+  Future<Response> get(
+    String path, {
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+  }) async {
+    try {
+      final response = await dio.get(
+        path,
+        queryParameters: queryParameters,
+        options: options,
+      );
+      return response;
+    } catch (e) {
+      rethrow;
+    }
+  }
+
+  Future<Response> put(
+    String path, {
+    dynamic data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+  }) async {
+    try {
+      final response = await dio.put(
+        path,
+        data: data,
+        queryParameters: queryParameters,
+        options: options,
+      );
+      return response;
+    } catch (e) {
+      rethrow;
+    }
+  }
+
+  Future<Response> delete(
+    String path, {
+    dynamic data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+  }) async {
+    try {
+      final response = await dio.delete(
+        path,
+        data: data,
+        queryParameters: queryParameters,
+        options: options,
+      );
+      return response;
+    } catch (e) {
+      rethrow;
+    }
+  }
+}

lib/core/utils/validators.dart

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+class Validators {
+  static String? validateEmail(String? value) {
+    if (value == null || value.isEmpty) {
+      return 'البريد الإلكتروني مطلوب';
+    }
+    final emailRegex = RegExp(r'^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$');
+    if (!emailRegex.hasMatch(value)) {
+      return 'البريد الإلكتروني غير صحيح';
+    }
+    return null;
+  }
+
+  static String? validatePhone(String? value) {
+    if (value == null || value.isEmpty) {
+      return 'رقم الهاتف مطلوب';
+    }
+    // Add your phone validation logic here
+    return null;
+  }
+
+  static String? validateRequired(String? value, String fieldName) {
+    if (value == null || value.isEmpty) {
+      return '$fieldName مطلوب';
+    }
+    return null;
+  }
+
+  static String? validatePassword(String? value) {
+    if (value == null || value.isEmpty) {
+      return 'كلمة المرور مطلوبة';
+    }
+    if (value.length < 6) {
+      return 'كلمة المرور يجب أن تكون 6 أحرف على الأقل';
+    }
+    return null;
+  }
+}