# Route Package Gap Analysis

## Overview

This document analyzes the gaps between our Route package's actual implementation and Laravel's routing functionality, identifying areas that need implementation or documentation updates.

> **Related Documentation**
> - See [Route Package Specification](route_package_specification.md) for current implementation
> - See [Laravel Compatibility Roadmap](laravel_compatibility_roadmap.md) for overall status
> - See [Foundation Integration Guide](foundation_integration_guide.md) for integration patterns
> - See [Testing Guide](testing_guide.md) for testing approaches
> - See [Getting Started Guide](getting_started.md) for development setup
> - See [Pipeline Package Specification](pipeline_package_specification.md) for middleware pipeline
> - See [Container Package Specification](container_package_specification.md) for dependency injection

## Implementation Gaps

### 1. Missing Laravel Features
```dart
// Documented but not implemented:

// 1. Route Model Binding
class RouteModelBinding {
  // Need to implement:
  void bind(String key, Type type);
  void bindWhere(String key, Type type, Function where);
  void bindCallback(String key, Function callback);
  void scopeBindings();
}

// 2. Route Caching
class RouteCache {
  // Need to implement:
  Future<void> cache();
  Future<void> clear();
  bool isEnabled();
  Future<void> reload();
  Future<void> compile();
}

// 3. Route Fallbacks
class RouteFallback {
  // Need to implement:
  void fallback(dynamic action);
  void missing(Function callback);
  void methodNotAllowed(Function callback);
  void notFound(Function callback);
}
```

### 2. Missing Route Features
```dart
// Need to implement:

// 1. Route Constraints
class RouteConstraints {
  // Need to implement:
  void pattern(String name, String pattern);
  void patterns(Map<String, String> patterns);
  bool matches(String name, String value);
  void whereNumber(List<String> parameters);
  void whereAlpha(List<String> parameters);
  void whereAlphaNumeric(List<String> parameters);
  void whereUuid(List<String> parameters);
}

// 2. Route Substitutions
class RouteSubstitution {
  // Need to implement:
  void substitute(String key, dynamic value);
  void substituteBindings(Map<String, dynamic> bindings);
  void substituteImplicit(Map<String, Type> bindings);
  String resolveBinding(String key);
}

// 3. Route Rate Limiting
class RouteRateLimiting {
  // Need to implement:
  void throttle(String name, int maxAttempts, Duration decay);
  void rateLimit(String name, int maxAttempts, Duration decay);
  void forUser(String name, int maxAttempts, Duration decay);
  void exempt(List<String> routes);
}
```

### 3. Missing Group Features
```dart
// Need to implement:

// 1. Group Attributes
class RouteGroupAttributes {
  // Need to implement:
  void controller(Type controller);
  void namespace(String namespace);
  void name(String name);
  void domain(String domain);
  void where(Map<String, String> patterns);
}

// 2. Group Middleware
class RouteGroupMiddleware {
  // Need to implement:
  void aliasMiddleware(String name, Type middleware);
  void middlewarePriority(List<String> middleware);
  void pushMiddlewareToGroup(String group, String middleware);
  List<String> getMiddlewareGroups();
}

// 3. Group Resources
class RouteGroupResources {
  // Need to implement:
  void resources(Map<String, Type> resources);
  void apiResources(Map<String, Type> resources);
  void singleton(String name, Type controller);
  void apiSingleton(String name, Type controller);
}
```

## Documentation Gaps

### 1. Missing API Documentation
```dart
// Need to document:

/// Binds route model.
/// 
/// Example:
/// ```dart
/// router.bind('user', User, (value) async {
///   return await User.find(value);
/// });
/// ```
void bind(String key, Type type, [Function? callback]);

/// Defines route pattern.
///
/// Example:
/// ```dart
/// router.pattern('id', '[0-9]+');
/// router.get('users/{id}', UsersController)
///   .where('id', '[0-9]+');
/// ```
void pattern(String name, String pattern);
```

### 2. Missing Integration Examples
```dart
// Need examples for:

// 1. Route Model Binding
router.bind('user', User);

router.get('users/{user}', (User user) {
  return user; // Auto-resolved from ID
});

// 2. Route Rate Limiting
router.middleware(['throttle:60,1'])
  .group(() {
    router.get('api/users', UsersController);
  });

// 3. Route Resources
router.resources({
  'photos': PhotoController,
  'posts': PostController
});
```

### 3. Missing Test Coverage
```dart
// Need tests for:

void main() {
  group('Route Model Binding', () {
    test('resolves bound models', () async {
      router.bind('user', User);
      
      var response = await router.dispatch(
        Request('GET', '/users/1')
      );
      
      expect(response.data, isA<User>());
      expect(response.data.id, equals('1'));
    });
  });
  
  group('Route Caching', () {
    test('caches compiled routes', () async {
      await router.cache();
      
      var route = router.match(
        Request('GET', '/users/1')
      );
      
      expect(route, isNotNull);
      expect(route!.compiled, isTrue);
    });
  });
}
```

## Implementation Priority

1. **High Priority**
   - Route model binding (Laravel compatibility)
   - Route caching (Laravel compatibility)
   - Route constraints

2. **Medium Priority**
   - Route substitutions
   - Route rate limiting
   - Group resources

3. **Low Priority**
   - Route fallbacks
   - Additional constraints
   - Performance optimizations

## Next Steps

1. **Implementation Tasks**
   - Add route model binding
   - Add route caching
   - Add route constraints
   - Add group resources

2. **Documentation Tasks**
   - Document model binding
   - Document caching
   - Document constraints
   - Add integration examples

3. **Testing Tasks**
   - Add binding tests
   - Add caching tests
   - Add constraint tests
   - Add resource tests

## Development Guidelines

### 1. Getting Started
Before implementing routing features:
1. Review [Getting Started Guide](getting_started.md)
2. Check [Laravel Compatibility Roadmap](laravel_compatibility_roadmap.md)
3. Follow [Testing Guide](testing_guide.md)
4. Use [Foundation Integration Guide](foundation_integration_guide.md)
5. Review [Route Package Specification](route_package_specification.md)
6. Review [Pipeline Package Specification](pipeline_package_specification.md)
7. Review [Container Package Specification](container_package_specification.md)

### 2. Implementation Process
For each routing feature:
1. Write tests following [Testing Guide](testing_guide.md)
2. Implement following Laravel patterns
3. Document following [Getting Started Guide](getting_started.md#documentation)
4. Integrate following [Foundation Integration Guide](foundation_integration_guide.md)

### 3. Quality Requirements
All implementations must:
1. Pass all tests (see [Testing Guide](testing_guide.md))
2. Meet Laravel compatibility requirements
3. Follow integration patterns (see [Foundation Integration Guide](foundation_integration_guide.md))
4. Match specifications in [Route Package Specification](route_package_specification.md)

### 4. Integration Considerations
When implementing routing features:
1. Follow patterns in [Foundation Integration Guide](foundation_integration_guide.md)
2. Ensure Laravel compatibility per [Laravel Compatibility Roadmap](laravel_compatibility_roadmap.md)
3. Use testing approaches from [Testing Guide](testing_guide.md)
4. Follow development setup in [Getting Started Guide](getting_started.md)

### 5. Performance Guidelines
Routing system must:
1. Match routes efficiently
2. Handle complex patterns
3. Support caching
4. Scale with route count
5. Meet performance targets in [Laravel Compatibility Roadmap](laravel_compatibility_roadmap.md#performance-benchmarks)

### 6. Testing Requirements
Route tests must:
1. Cover all route types
2. Test pattern matching
3. Verify middleware
4. Check parameter binding
5. Follow patterns in [Testing Guide](testing_guide.md)

### 7. Documentation Requirements
Route documentation must:
1. Explain routing patterns
2. Show group examples
3. Cover parameter binding
4. Include performance tips
5. Follow standards in [Getting Started Guide](getting_started.md#documentation)
