thrillwiki_django_no_react/memory-bank/documentation/Issues.md

Issues and Technical Debt Documentation

Known Bugs

1. Data Integrity Issues

Historical Slug Resolution

# Current Implementation
class Park(models.Model):
    @classmethod
    def get_by_slug(cls, slug: str):
        # Issue: Race condition possible between slug check and retrieval
        # TODO: Implement proper locking or transaction handling
        try:
            return cls.objects.get(slug=slug)
        except cls.DoesNotExist:
            return cls.objects.get(historical_slugs__slug=slug)

Media File Management

# Current Issue
class MediaHandler:
    def process_upload(self, file):
        # Bug: Temporary files not always cleaned up
        # TODO: Implement proper cleanup in finally block
        try:
            process_file(file)
        except Exception:
            log_error()

2. Performance Issues

N+1 Query Patterns

# Inefficient Queries in Views
class ParkDetailView(DetailView):
    def get_context_data(self):
        context = super().get_context_data()
        # Issue: N+1 queries for each ride's reviews
        context['rides'] = [
            {
                'ride': ride,
                'reviews': ride.reviews.all()  # Causes N+1 query
            } 
            for ride in self.object.rides.all()
        ]

Cache Invalidation

# Inconsistent Cache Updates
class ReviewManager:
    def update_stats(self, obj):
        # Bug: Race condition in cache updates
        # TODO: Implement atomic cache updates
        stats = calculate_stats(obj)
        cache.set(f'{obj}_stats', stats)

Technical Debt

1. Code Organization

Monolithic Views

# views.py
class ParkView(View):
    def post(self, request, *args, **kwargs):
        # TODO: Break down into smaller, focused views
        # Currently handles too many responsibilities:
        # - Park creation
        # - Media processing
        # - Notification sending
        # - Stats updating

Duplicate Business Logic

# Multiple implementations of similar functionality
class ParkValidator:
    def validate_status(self):
        # TODO: Consolidate with RideValidator.validate_status
        if self.status not in VALID_STATUSES:
            raise ValidationError()

class RideValidator:
    def validate_status(self):
        if self.status not in VALID_STATUSES:
            raise ValidationError()

2. Infrastructure

Configuration Management

# settings.py
# TODO: Move to environment variables
DATABASE_PASSWORD = 'hardcoded_password'
API_KEY = 'hardcoded_key'

# TODO: Implement proper configuration management
FEATURE_FLAGS = {
    'new_review_system': True,
    'beta_features': False
}

Deployment Process

# Manual deployment steps
# TODO: Automate deployment process
ssh server
git pull
pip install -r requirements.txt
python manage.py migrate
supervisorctl restart app

3. Testing

Test Coverage Gaps

# Missing test cases for error conditions
class ParkTests(TestCase):
    def test_create_park(self):
        # Only tests happy path
        park = Park.objects.create(name='Test Park')
        self.assertEqual(park.name, 'Test Park')
        
    # TODO: Add tests for:
    # - Invalid input handling
    # - Concurrent modifications
    # - Edge cases

Integration Test Debt

# Brittle integration tests
class APITests(TestCase):
    # TODO: Replace with proper test doubles
    def setUp(self):
        # Direct database dependencies
        self.park = Park.objects.create()
        # External service calls
        self.geocoder = RealGeocoder()

Enhancement Opportunities

1. Feature Enhancements

Advanced Search

# Current basic search implementation
class ParkSearch:
    def search(self, query):
        # TODO: Implement advanced search features:
        # - Full-text search
        # - Faceted search
        # - Geographic search
        return Park.objects.filter(name__icontains=query)

Review System

# Basic review functionality
class Review(models.Model):
    # TODO: Enhance with:
    # - Rich text support
    # - Media attachments
    # - Review responses
    # - Helpful votes
    rating = models.IntegerField()
    comment = models.TextField()

2. Technical Improvements

API Versioning

# Current API structure
# TODO: Implement proper API versioning
urlpatterns = [
    path('api/parks/', ParkViewSet.as_view()),
    # Need to support:
    # - Multiple versions
    # - Deprecation handling
    # - Documentation
]

Caching Strategy

# Basic caching
# TODO: Implement:
# - Multi-layer caching
# - Cache warming
# - Intelligent invalidation
@cache_page(60 * 15)
def park_detail(request, slug):
    return render(request, 'park_detail.html')

3. Performance Optimizations

Database Optimization

# Current database usage
# TODO: Implement:
# - Connection pooling
# - Read replicas
# - Query optimization
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'thrillwiki',
    }
}

Asset Delivery

# Static file handling
# TODO: Implement:
# - CDN integration
# - Image optimization pipeline
# - Responsive images
STATIC_URL = '/static/'
MEDIA_URL = '/media/'

Prioritized Improvements

High Priority

1. Security Fixes

   • Fix authentication vulnerabilities
   • Implement proper input validation
   • Secure file uploads

2. Critical Performance Issues

   • Resolve N+1 queries
   • Implement connection pooling
   • Optimize cache usage

3. Data Integrity

   • Fix race conditions
   • Implement proper transactions
   • Add data validation

Medium Priority

1. Technical Debt

   • Refactor monolithic views
   • Consolidate duplicate code
   • Improve test coverage

2. Developer Experience

   • Automate deployment
   • Improve documentation
   • Add development tools

3. Feature Enhancements

   • Implement advanced search
   • Enhance review system
   • Add API versioning

Low Priority

1. Nice-to-have Features

   • Rich text support
   • Enhanced media handling
   • Social features

2. Infrastructure Improvements

   • CDN integration
   • Monitoring enhancements
   • Analytics improvements

Implementation Plan

Phase 1: Critical Fixes

# Timeline: Q1 2024
# Focus:
# - Security vulnerabilities
# - Performance bottlenecks
# - Data integrity issues

Phase 2: Technical Debt

# Timeline: Q2 2024
# Focus:
# - Code refactoring
# - Test coverage
# - Documentation

Phase 3: Enhancements

# Timeline: Q3-Q4 2024
# Focus:
# - Feature improvements
# - Infrastructure upgrades
# - User experience