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| 1 | +# Advanced Holdings Table Requirements |
| 2 | + |
| 3 | +## Introduction |
| 4 | + |
| 5 | +This feature enhances the existing holdings table with sorting, filtering, and bulk operations to help users manage larger portfolios more efficiently. |
| 6 | + |
| 7 | +**Foundation**: Built on v1.0's existing holdings table and HoldingsCalculator with proven performance. |
| 8 | + |
| 9 | +## Requirements |
| 10 | + |
| 11 | +### Requirement 1: Table Sorting and Persistence |
| 12 | + |
| 13 | +**User Story:** As a portfolio manager with many holdings, I want to sort my holdings by different criteria so that I can analyze my positions effectively. |
| 14 | + |
| 15 | +#### Acceptance Criteria |
| 16 | + |
| 17 | +1. WHEN viewing the holdings table THEN users SHALL be able to click column headers to sort by that column |
| 18 | +2. WHEN sorting is applied THEN the system SHALL show visual indicators (arrows) for sort direction |
| 19 | +3. WHEN clicking the same column header THEN sorting SHALL toggle between ascending and descending |
| 20 | +4. WHEN sorting is applied THEN the sort state SHALL persist across page refreshes |
| 21 | +5. WHEN the table is sorted THEN all data SHALL remain accurate and properly formatted |
| 22 | + |
| 23 | +### Requirement 2: Holdings Filtering |
| 24 | + |
| 25 | +**User Story:** As an investor with a diverse portfolio, I want to filter my holdings so that I can focus on specific types of investments. |
| 26 | + |
| 27 | +#### Acceptance Criteria |
| 28 | + |
| 29 | +1. WHEN viewing the holdings table THEN users SHALL have access to filter controls above the table |
| 30 | +2. WHEN filtering by asset class THEN only holdings matching the selected class SHALL be displayed |
| 31 | +3. WHEN filtering by performance THEN users SHALL be able to show only gains, losses, or both |
| 32 | +4. WHEN filters are applied THEN the system SHALL show active filter indicators with clear options |
| 33 | +5. WHEN filters are cleared THEN the table SHALL return to showing all holdings |
| 34 | + |
| 35 | +### Requirement 3: Bulk Operations |
| 36 | + |
| 37 | +**User Story:** As a power user, I want to perform actions on multiple holdings at once so that I can manage my portfolio efficiently. |
| 38 | + |
| 39 | +#### Acceptance Criteria |
| 40 | + |
| 41 | +1. WHEN viewing holdings THEN users SHALL be able to select multiple rows using checkboxes |
| 42 | +2. WHEN rows are selected THEN bulk action buttons SHALL appear (Refresh Prices, Export Data) |
| 43 | +3. WHEN bulk refresh is triggered THEN selected holdings SHALL have their prices updated simultaneously |
| 44 | +4. WHEN bulk export is triggered THEN selected holdings data SHALL be exported to CSV format |
| 45 | +5. WHEN bulk operations complete THEN users SHALL receive confirmation and the selection SHALL clear |
| 46 | + |
| 47 | +### Requirement 4: Pagination for Large Portfolios |
| 48 | + |
| 49 | +**User Story:** As an investor with many holdings, I want the table to load quickly so that I can access my data without performance issues. |
| 50 | + |
| 51 | +#### Acceptance Criteria |
| 52 | + |
| 53 | +1. WHEN the portfolio has more than 25 holdings THEN the table SHALL implement pagination |
| 54 | +2. WHEN navigating pages THEN sort and filter settings SHALL be maintained |
| 55 | +3. WHEN on any page THEN users SHALL see current page info (showing X-Y of Z holdings) |
| 56 | +4. WHEN changing pages THEN the transition SHALL be smooth without full page reloads |
| 57 | +5. WHEN bulk operations are used THEN they SHALL work across all pages, not just the current page |
| 58 | + |
| 59 | +## Technical Requirements |
| 60 | + |
| 61 | +### Integration Points |
| 62 | + |
| 63 | +- **Existing Holdings Table**: Enhance current table component |
| 64 | +- **HoldingsCalculator**: Use existing calculation engine |
| 65 | +- **Phoenix LiveView**: Leverage existing real-time capabilities |
| 66 | +- **User Preferences**: Store sort/filter preferences (new feature) |
| 67 | + |
| 68 | +### Performance Targets |
| 69 | + |
| 70 | +- Table rendering: < 500ms for 100+ holdings |
| 71 | +- Sort operations: < 200ms response time |
| 72 | +- Filter operations: < 300ms response time |
| 73 | +- Bulk operations: < 5s for 50 selected holdings |
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