retail/docs/EXPORT_FILES_SUMMARY.md

Clean Architecture Export Files - Summary

Overview

Successfully created comprehensive barrel export files for the entire retail POS application following clean architecture principles.

Total Files Created: 52 Export Files

Core Module (10 files)

1. /Users/ssg/project/retail/lib/core/core.dart - Main core export
2. /Users/ssg/project/retail/lib/core/config/config.dart - Configuration exports
3. /Users/ssg/project/retail/lib/core/constants/constants.dart - All constants
4. /Users/ssg/project/retail/lib/core/database/database.dart - Database utilities
5. /Users/ssg/project/retail/lib/core/di/di.dart - Dependency injection
6. /Users/ssg/project/retail/lib/core/errors/errors.dart - Exceptions & failures
7. /Users/ssg/project/retail/lib/core/network/network.dart - HTTP & network
8. /Users/ssg/project/retail/lib/core/storage/storage.dart - Secure storage
9. /Users/ssg/project/retail/lib/core/theme/theme.dart - Material 3 theme
10. /Users/ssg/project/retail/lib/core/utils/utils.dart - Utilities & helpers

Auth Feature (7 files)

11. /Users/ssg/project/retail/lib/features/auth/auth.dart - Main auth export
12. /Users/ssg/project/retail/lib/features/auth/data/data.dart - Auth data layer
13. /Users/ssg/project/retail/lib/features/auth/data/models/models.dart - Auth models
14. /Users/ssg/project/retail/lib/features/auth/domain/domain.dart - Auth domain layer
15. /Users/ssg/project/retail/lib/features/auth/domain/entities/entities.dart - Auth entities
16. /Users/ssg/project/retail/lib/features/auth/presentation/presentation.dart - Auth presentation
17. /Users/ssg/project/retail/lib/features/auth/presentation/pages/pages.dart - Auth pages

Products Feature (10 files)

18. /Users/ssg/project/retail/lib/features/products/products.dart - Main products export
19. /Users/ssg/project/retail/lib/features/products/data/data.dart - Products data layer
20. /Users/ssg/project/retail/lib/features/products/data/datasources/datasources.dart - Product data sources
21. /Users/ssg/project/retail/lib/features/products/data/models/models.dart - Product models
22. /Users/ssg/project/retail/lib/features/products/domain/domain.dart - Products domain layer
23. /Users/ssg/project/retail/lib/features/products/domain/entities/entities.dart - Product entities
24. /Users/ssg/project/retail/lib/features/products/domain/usecases/usecases.dart - Product use cases
25. /Users/ssg/project/retail/lib/features/products/presentation/presentation.dart - Products presentation
26. /Users/ssg/project/retail/lib/features/products/presentation/pages/pages.dart - Product pages
27. /Users/ssg/project/retail/lib/features/products/presentation/providers/providers.dart - Product providers

Categories Feature (9 files)

28. /Users/ssg/project/retail/lib/features/categories/categories.dart - Main categories export
29. /Users/ssg/project/retail/lib/features/categories/data/data.dart - Categories data layer
30. /Users/ssg/project/retail/lib/features/categories/data/datasources/datasources.dart - Category data sources
31. /Users/ssg/project/retail/lib/features/categories/data/models/models.dart - Category models
32. /Users/ssg/project/retail/lib/features/categories/domain/domain.dart - Categories domain layer
33. /Users/ssg/project/retail/lib/features/categories/domain/entities/entities.dart - Category entities
34. /Users/ssg/project/retail/lib/features/categories/domain/usecases/usecases.dart - Category use cases
35. /Users/ssg/project/retail/lib/features/categories/presentation/presentation.dart - Categories presentation
36. /Users/ssg/project/retail/lib/features/categories/presentation/pages/pages.dart - Category pages

Home/Cart Feature (9 files)

37. /Users/ssg/project/retail/lib/features/home/home.dart - Main home/cart export
38. /Users/ssg/project/retail/lib/features/home/data/data.dart - Cart data layer
39. /Users/ssg/project/retail/lib/features/home/data/datasources/datasources.dart - Cart data sources
40. /Users/ssg/project/retail/lib/features/home/data/models/models.dart - Cart models
41. /Users/ssg/project/retail/lib/features/home/domain/domain.dart - Cart domain layer
42. /Users/ssg/project/retail/lib/features/home/domain/entities/entities.dart - Cart entities
43. /Users/ssg/project/retail/lib/features/home/domain/usecases/usecases.dart - Cart use cases
44. /Users/ssg/project/retail/lib/features/home/presentation/presentation.dart - Cart presentation
45. /Users/ssg/project/retail/lib/features/home/presentation/pages/pages.dart - Cart pages

Settings Feature (10 files)

46. /Users/ssg/project/retail/lib/features/settings/settings.dart - Main settings export
47. /Users/ssg/project/retail/lib/features/settings/data/data.dart - Settings data layer
48. /Users/ssg/project/retail/lib/features/settings/data/datasources/datasources.dart - Settings data sources
49. /Users/ssg/project/retail/lib/features/settings/data/models/models.dart - Settings models
50. /Users/ssg/project/retail/lib/features/settings/domain/domain.dart - Settings domain layer
51. /Users/ssg/project/retail/lib/features/settings/domain/entities/entities.dart - Settings entities
52. /Users/ssg/project/retail/lib/features/settings/domain/usecases/usecases.dart - Settings use cases
53. /Users/ssg/project/retail/lib/features/settings/presentation/presentation.dart - Settings presentation
54. /Users/ssg/project/retail/lib/features/settings/presentation/pages/pages.dart - Settings pages
55. /Users/ssg/project/retail/lib/features/settings/presentation/widgets/widgets.dart - Settings widgets

Top-Level Exports (2 files)

56. /Users/ssg/project/retail/lib/features/features.dart - All features export
57. /Users/ssg/project/retail/lib/shared/shared.dart - Shared components export

Architecture Benefits

1. Clean Imports

// Before
import 'package:retail/features/products/data/models/product_model.dart';
import 'package:retail/features/products/domain/entities/product.dart';
import 'package:retail/features/products/domain/repositories/product_repository.dart';

// After
import 'package:retail/features/products/products.dart';

2. Layer Separation

• Data Layer: Models, data sources, repository implementations
• Domain Layer: Entities, repository interfaces, use cases
• Presentation Layer: Pages, widgets, providers

3. Dependency Rules

• Presentation → Domain ← Data
• Domain is independent (no dependencies on outer layers)
• Data implements domain interfaces

4. Import Flexibility

// Import entire feature
import 'package:retail/features/auth/auth.dart';

// Import specific layer
import 'package:retail/features/auth/domain/domain.dart';

// Import specific component
import 'package:retail/features/auth/domain/entities/entities.dart';

Usage Examples

Feature-Level Import

import 'package:retail/features/products/products.dart';

// Access all layers: data, domain, presentation

Layer-Level Import

import 'package:retail/features/products/domain/domain.dart';

// Access: entities, repositories, use cases

Component-Level Import

import 'package:retail/features/products/domain/entities/entities.dart';

// Access: Product entity only

Core Utilities

import 'package:retail/core/core.dart';

// Access all core utilities: constants, network, theme, etc.

Specific Core Module

import 'package:retail/core/theme/theme.dart';

// Access: AppTheme, colors, typography

Export Hierarchy

lib/
├── core/core.dart                             # All core utilities
│   ├── config/config.dart
│   ├── constants/constants.dart
│   ├── database/database.dart
│   ├── di/di.dart
│   ├── errors/errors.dart
│   ├── network/network.dart
│   ├── storage/storage.dart
│   ├── theme/theme.dart
│   └── utils/utils.dart
│
├── features/features.dart                     # All features
│   ├── auth/auth.dart                         # Auth feature
│   │   ├── data/data.dart
│   │   │   └── models/models.dart
│   │   ├── domain/domain.dart
│   │   │   └── entities/entities.dart
│   │   └── presentation/presentation.dart
│   │       └── pages/pages.dart
│   │
│   ├── products/products.dart                 # Products feature
│   │   ├── data/data.dart
│   │   │   ├── datasources/datasources.dart
│   │   │   └── models/models.dart
│   │   ├── domain/domain.dart
│   │   │   ├── entities/entities.dart
│   │   │   └── usecases/usecases.dart
│   │   └── presentation/presentation.dart
│   │       ├── pages/pages.dart
│   │       └── providers/providers.dart
│   │
│   ├── categories/categories.dart             # Categories feature
│   │   ├── data/data.dart
│   │   │   ├── datasources/datasources.dart
│   │   │   └── models/models.dart
│   │   ├── domain/domain.dart
│   │   │   ├── entities/entities.dart
│   │   │   └── usecases/usecases.dart
│   │   └── presentation/presentation.dart
│   │       └── pages/pages.dart
│   │
│   ├── home/home.dart                         # Home/Cart feature
│   │   ├── data/data.dart
│   │   │   ├── datasources/datasources.dart
│   │   │   └── models/models.dart
│   │   ├── domain/domain.dart
│   │   │   ├── entities/entities.dart
│   │   │   └── usecases/usecases.dart
│   │   └── presentation/presentation.dart
│   │       └── pages/pages.dart
│   │
│   └── settings/settings.dart                 # Settings feature
│       ├── data/data.dart
│       │   ├── datasources/datasources.dart
│       │   └── models/models.dart
│       ├── domain/domain.dart
│       │   ├── entities/entities.dart
│       │   └── usecases/usecases.dart
│       └── presentation/presentation.dart
│           ├── pages/pages.dart
│           └── widgets/widgets.dart
│
└── shared/shared.dart                         # Shared components

Guidelines

DO's

1. Import at the appropriate level (feature, layer, or component)
2. Use barrel exports for cleaner code
3. Respect layer boundaries (domain never imports data/presentation)
4. Update barrel exports when adding/removing files

DON'Ts

1. Don't bypass barrel exports
2. Don't violate layer dependencies
3. Don't over-import (import only what you need)
4. Don't import implementation details directly

Maintenance

When making changes:

1. Adding new file: Update the appropriate barrel export
2. Removing file: Remove from barrel export
3. Renaming file: Update barrel export reference
4. New module: Create new barrel exports following the pattern

Documentation

Full documentation available at:

• /Users/ssg/project/retail/lib/EXPORTS_DOCUMENTATION.md

Key Features

• 52 barrel export files covering all features and core modules
• Hierarchical organization from top-level to component-level
• Layer isolation enforcing clean architecture
• Flexible imports at feature, layer, or component level
• Clear boundaries between modules and layers
• Easy maintenance with centralized exports

Next Steps

1. Update existing imports to use barrel exports
2. Run flutter analyze to ensure no issues
3. Test imports in different files
4. Update team documentation
5. Create import examples for common scenarios

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Created: October 10, 2025 Architecture: Clean Architecture with Feature-First Organization Pattern: Barrel Exports with Layer Separation