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SenderDashboard Implementation Summary

Overview

Successfully implemented an enhanced SenderDashboard component with comprehensive stream creation history, analytics, and activity tracking for senders.

Implementation Details

1. Enhanced Component (SenderDashboard.tsx)

Location: frontend/src/components/SenderDashboard.tsx

Features Implemented:

Stats Cards Section
  • Total Streams Created: Displays the complete count of streams created by the sender
  • Total Amount Streamed: Aggregates the total amount across all streams
  • Active Streams: Count of currently active streams
  • Completed/Canceled: Count of completed or canceled streams
  • Asset Breakdown: Additional metric cards showing total amount per asset (USDC, XLM, etc.)
Bar Chart - Streams by Status
  • Library: Uses Recharts BarChart component
  • Data: Visualizes stream distribution across statuses:
    • Scheduled
    • Active
    • Paused
    • Completed
    • Canceled
  • Features:
    • Responsive container for proper scaling
    • Color-coded bars for each status
    • Interactive tooltips
    • Only renders when there are streams with different statuses
Recent Activity Feed
  • Data Source: Aggregates events from all sender's streams
  • Display: Shows last 10 events sorted by timestamp (most recent first)
  • Event Types:
    • created - Stream creation events
    • claimed - Claim events with amounts
    • canceled - Stream cancellations
    • paused - Stream pauses
    • resumed - Stream resumptions
    • start_time_updated - Start time modifications
  • Display Format:
    • Event description with relevant amounts/assets
    • Stream ID reference (truncated for readability)
    • Human-readable timestamp (locale-aware)
Quick Action Buttons
  • Create Stream:
    • Primary CTA in header
    • Alternative prompt in empty state
    • Toggles CreateStreamForm visibility
  • Bulk Cancel:
    • Appears when streams are selected for cancellation
    • Shows count of selected streams
    • Opens confirmation dialog before proceeding
    • Updates streams and events upon completion
Stream Selection & Management
  • Checkboxes: Individual stream selection in Active & Scheduled table
  • Header Checkbox: Select/deselect all streams at once
  • Visual Feedback: Bulk cancel button appears when selections are made
  • State Management: Selection state persists during interaction

2. API Helper Function (api.ts)

Location: frontend/src/services/api.ts

New Function: getSenderEvents()

export async function getSenderEvents(
  senderAddress: string, 
  limit: number = 10
): Promise<StreamEvent[]>

Purpose: Fetches and aggregates events for all sender's streams

Implementation:

  1. Gets all streams for the sender using listStreams({ sender: senderAddress })
  2. Fetches event history for each stream using getStreamHistory()
  3. Aggregates all events into a single array
  4. Sorts by timestamp (descending - most recent first)
  5. Returns limited set (default 10)
  6. Gracefully handles individual stream fetch failures

Error Handling:

  • Returns empty array if no streams exist
  • Silent failure on individual stream event fetch errors
  • Tries-all approach ensures partial data doesn't block display

3. Comprehensive Test Suite (SenderDashboard.test.tsx)

Location: frontend/src/components/SenderDashboard.test.tsx

Test Coverage: 15+ Tests

Stats Card Tests
  • ✅ Displays correct total streams, amount, active, and completed counts
  • ✅ Shows asset breakdown for multiple assets (USDC, XLM, etc.)
  • ✅ Calculates totals correctly for mixed stream statuses
Bar Chart Tests
  • ✅ Renders bar chart with correct status labels
  • ✅ Displays streams by status distribution
  • ✅ Filters zero-value statuses from chart
Activity Feed Tests
  • ✅ Displays recent activity with event descriptions
  • ✅ Aggregates events from multiple streams
  • ✅ Sorts events by timestamp (newest first)
  • ✅ Shows stream ID references and human-readable timestamps
Bulk Cancel Tests
  • ✅ Shows bulk cancel button when streams are selected
  • ✅ Allows individual stream selection/deselection
  • ✅ Supports select-all via header checkbox
  • ✅ Updates count display correctly
Baseline Tests (Maintained)
  • ✅ Renders with mocked API data
  • ✅ Handles empty stream list with create prompt
  • ✅ Shows CreateStreamForm on button click
  • ✅ Surfaces API errors to user
  • ✅ Shows wallet connection prompt when needed

Fixtures & Mocking

  • Complete mock stream factories for all statuses
  • Mock event generation with timestamp support
  • MSW (Mock Service Worker) handlers for:
    • /api/streams?sender=
    • /api/streams/:streamId/history
  • Proper async/await handling with waitFor utilities

Acceptance Criteria - All Met ✅

1. Stats Cards

✅ Implemented:

  • Total streams created
  • Total amount streamed
  • Active streams count
  • Completed/canceled streams count
  • Asset-specific totals

2. Bar Chart

✅ Implemented:

  • Streams by status visualization
  • Scheduled, Active, Paused, Completed, Canceled categories
  • Responsive recharts BarChart component
  • Color-coded status representation

3. Recent Activity Feed

✅ Implemented:

  • Last 10 events from all streams
  • Human-readable event descriptions
  • Stream ID references
  • Timestamp display (locale-aware)
  • Event type support: created, claimed, canceled, paused, resumed, start_time_updated

4. Quick Action Buttons

✅ Implemented:

  • Create Stream button (header + empty state)
  • Bulk Cancel functionality
  • Selection checkboxes (individual + all)
  • Confirmation dialogs

5. Vitest Tests

✅ Implemented:

  • 15+ comprehensive tests
  • Mocked API data using MSW
  • Fixture factories for streams
  • Event mocking
  • Async/await patterns
  • All acceptance criteria covered by tests

Technical Stack

Dependencies Used

  • React: 18.2.0 - Component framework
  • Recharts: 3.7.0 - Data visualization (BarChart)
  • Zod: 4.3.6 - Type validation
  • Testing Library: React testing utilities
  • Vitest: Testing framework
  • MSW: API mocking

Component Integration

  • Seamlessly integrates with existing SenderDashboard features
  • Maintains backward compatibility
  • Preserves polling mechanism (5-second refresh)
  • Uses existing style classes and patterns

Files Modified

  1. frontend/src/components/SenderDashboard.tsx

    • Enhanced with stats cards
    • Added bar chart
    • Integrated activity feed
    • Added bulk cancel UI
    • Complete rewrite while maintaining backward compatibility

  2. frontend/src/services/api.ts

    • Added getSenderEvents() function
    • Event aggregation logic
    • Error handling

  3. frontend/src/components/SenderDashboard.test.tsx

    • Complete rewrite with comprehensive test suite
    • 15+ test cases
    • Fixtures for all stream types
    • Event mocking
    • MSW handler setup

Performance Considerations

  1. Event Fetching:

    • Happens in background after streams load
    • Non-blocking for dashboard display
    • Parallel requests for stream histories

  2. Polling:

    • Maintains 5-second refresh interval
    • Refreshes both streams and events
    • Silent failures don't block updates

  3. Rendering:

    • Memoized stats calculations
    • Conditional chart rendering (only when data exists)
    • Efficient checkpoint handling for checkboxes

Future Enhancement Opportunities

  1. Filtering: Add status/date filters to activity feed
  2. Export: Export activity history as CSV
  3. Notifications: Real-time updates for new events
  4. Advanced Analytics: Time-series metrics chart
  5. Activity Details: Modal with full event details
  6. Search: Search activity feed by recipient/asset

Testing Notes

To run the tests:

cd frontend
npm test -- src/components/SenderDashboard.test.tsx

All tests include proper:

  • MSW mock handlers
  • Async waitFor utilities
  • fireEvent interactions
  • Error boundary testing
  • Empty state testing
  • Loading state testing