feat: spending trend heatmap visualization#575
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mendarb wants to merge 1 commit intorohitdash08:mainfrom
Open
feat: spending trend heatmap visualization#575mendarb wants to merge 1 commit intorohitdash08:mainfrom
mendarb wants to merge 1 commit intorohitdash08:mainfrom
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Add a calendar-style heatmap (like GitHub contributions) that visualizes daily spending intensity over the past year. Backend: - GET /api/expenses/heatmap?months=12 endpoint with JWT auth - Aggregates daily spending totals from Expense model Frontend: - SpendingHeatmap component with 52x7 grid, color scale, and tooltips - Integrated into the Analytics page - Pure CSS/Tailwind, no charting library needed Tests: - Backend: test_heatmap.py (auth, aggregation, validation) - Frontend: SpendingHeatmap.test.tsx (loading, grid, tooltip, error, legend) Closes rohitdash08#116 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
GET /api/expenses/heatmap?months=12endpoint (JWT-protected) that returns daily spending totals aggregated from the Expense modelSpendingHeatmapcomponent -- a calendar-style heatmap grid (52 weeks x 7 days, like GitHub contributions) with color scale from gray (no spending) through green/yellow/orange/red, and hover tooltips showing date + amountTest plan
pytest tests/test_heatmap.py-- verifies empty state, daily aggregation of multiple expenses, auth requirement, and invalid param handlingjest SpendingHeatmap.test.tsx-- verifies loading state, 364-cell grid rendering, tooltip show/hide on hover, error display, and legend presenceCloses #116
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