- Add hotspot calculation methods to analytics service
- Implement MySQL spatial queries for clustering (5+ reports within 500m)
- Calculate severity scores based on report count and frequency
- Create GET /api/analytics/hotspots endpoint
- Create GET /api/analytics/hotspots/:id endpoint for details
- Create POST /api/analytics/hotspots/calculate for manual trigger
- Implement scheduled job with node-cron (runs every 5 minutes)
- Add comprehensive test scripts for hotspot functionality
- Create detailed implementation documentation
Requirements addressed:
- 3.2: Identify areas with 5+ reports within 500m radius
- 3.3: Rank hotspots by severity score
- 3.4: Update calculations within 5 minutes
- 3.5: Provide data for map visualization with severity indicators
- Created analytics service with summary, trends, comparison, and aggregated data methods
- Implemented 5 analytics endpoints: summary, trends, comparison, aggregated, and CSV export
- Added time series data with day/week/month interval support
- Implemented period-over-period comparison metrics with percentage changes
- Added CSV export functionality using json2csv
- Updated frontend analytics service to unwrap API responses
- Fixed chart components to work with new data structure (reportCount, eventCount, litterCollected)
- Updated TypeScript types to match backend API structure
- All endpoints tested and verified working
Requirements satisfied: 5.1, 5.2, 5.3, 5.4, 5.5
