ComeOnOliver Portfolio Buddy 2 - Project Context
Tech Stack
- Frontend: React 19, TypeScript, Vite
- UI: Tailwind CSS, shadcn/ui (color system only)
- Charts: Chart.js, react-chartjs-2, chartjs plugins (zoom, annotation, date adapter)
- State: Plain React (useState, useMemo, useCallback)
- Data Utils: date-fns for date manipulation
- Backend: Supabase (PostgreSQL)
- Deployment: Cloudflare Pages
Project Purpose
Portfolio analysis tool for investors and futures traders to:
- Compare trading strategies vs benchmark assets (SPY, GLD)
- Calculate correlation matrices between assets (Spearman & Pearson)
- Analyze risk metrics and performance (Sharpe, Sortino, Max DD, etc.)
- Upload trade data via CSV and visualize results
- Apply contract multipliers to adjust metrics for futures trading
- Filter data by date range for period-specific analysis
Known Issues & Tech Debt
Current Tech Debt
Unused Dependency: Recharts (11.5KB) installed but never imported
- Should be removed from package.json
- Currently using Chart.js instead
Oversized Components: Violate 200-line standard
- PortfolioSection.tsx (591 lines) → needs refactoring into subcomponents
- App.tsx (351 lines) → extract sections into components
- MetricsTable.tsx (242 lines) → improved but still over limit
TypeScript Violations: 15 instances of
anytype- usePortfolio.ts: 11 occurrences in trade/metrics types
- useMetrics.ts: 4 occurrences in sort comparisons
- dataUtils.ts: 1 occurrence in Metrics interface
Known Bugs
- Supabase Upload Errors: Intermittent 500 errors on large uploads
- Enhanced error handling added in commit 9fb7fdb
- Check error handling in upload hooks
- Verify row limits aren't exceeded on free tier
Recent Features Added
- Sortino Ratio Calculation (commits 258ba3a, 9f25040)
- Location: Implemented inline in PortfolioSection.tsx (lines 133-158)
- Risk-free rate input state for user-specified risk-free rate
- Annualized downside deviation using sqrt(365) factor
- Corrected variance calculation (divides by total returns, not just negative)
- Displayed in portfolio stats section (line 535)
- Note: NOT in dataUtils.ts - kept in component due to portfolio-level context
- Date Range Filtering (commit 258ba3a)
- Filter portfolio data by start/end date
- Implemented in usePortfolio hook
- Advanced Multi-Column Sorting (useSorting hook)
- Sort by multiple columns with priority
- Custom comparison logic per column
Architectural Constraints
- Component Limit: Max 200 lines per component (currently violated by 3 components)
- Hook Pattern: Custom hooks in
/src/hooks/ - Utils Pattern: Pure functions in
/src/utils/ - Type Safety: Strict TypeScript, no
anytypes (15 violations exist as tech debt) - State Management: Plain React hooks only - no Zustand or TanStack Query
Key Components Structure
src/
├── components/
│ ├── AnalyticsControls.tsx (toggle Metrics/Portfolio/Correlation views)
│ ├── ContractInput.tsx (contract multiplier inputs)
│ ├── CorrelationHeatmap.tsx (correlation visualization)
│ ├── CorrelationSection.tsx (correlation analysis wrapper)
│ ├── CustomTooltip.tsx (chart tooltips)
│ ├── ErrorList.tsx (error display)
│ ├── Header.tsx (app header)
│ ├── MasterContractControl.tsx (apply contract value to all)
│ ├── MetricsTable.tsx (metrics display & selection)
│ ├── PortfolioSection.tsx (portfolio charts & analysis - 591 lines!)
│ ├── SessionComplete.tsx (completion UI)
│ ├── SortableHeader.tsx (table header with sort indicators)
│ ├── UploadedFilesList.tsx (list of uploaded files)
│ └── UploadSection.tsx (file upload to Supabase)
├── hooks/
│ ├── useContractMultipliers.ts (manage contract multipliers)
│ ├── useMetrics.ts (calculate trading metrics)
│ ├── usePortfolio.ts (portfolio data & date filtering)
│ └── useSorting.ts (advanced multi-column sorting)
└── utils/
└── dataUtils.ts (metric calculations, CSV parsing, correlations)
Migration Context
Migrating 40 features from old app (35/40 completed). See migration-tracker skill for details.