thrillwiki_django_no_react/memory-bank/features/version-control/version-comparison.md

Version Comparison Tool Implementation Plan

Core Requirements

1. Multi-version timeline visualization
2. Three-way merge preview
3. Change impact analysis
4. Rollback capabilities
5. Performance baseline: <500ms for 100-file diffs

Technical Integration

• Diff Algorithm
  Enhance visual-diff-viewer.md component (line 10):

  interface ComparisonEngine {  
      compareVersions(versions: string[]): StructuredDiff[];  
      calculateImpactScore(diffs: StructuredDiff[]): number;  
  }  
  

• Model Extensions
  Update VersionTag (line 6):

  class VersionTag(models.Model):  
      comparison_metadata = models.JSONField(default=dict)  # Stores diff stats  
  

• API Endpoints
  Add to VersionControlViewSet (line 128):

  @action(detail=False, methods=['post'])  
  def bulk_compare(self, request):  
      """Process multi-version comparisons"""  
  

Performance Strategy

Aspect	Solution	Target
Diff computation	Background workers	90% async processing
Result caching	Redis cache layer	5min TTL
Large files	Chunked processing	10MB chunks
UI rendering	Virtualized scrolling	60fps maintain

Phase Plan

1. Week 1: Core comparison algorithm
2. Week 2: Timeline visualization UI
3. Week 3: Performance optimization
4. Week 4: Rollback safety mechanisms