Add real-time consumer panel and paginated transaction results
- Implement WebSocket endpoint (/ws/fraud-results) in API for real-time fraud detection updates - Add Redis pub/sub listener in API to broadcast consumer results to connected WebSocket clients - Update consumer to publish fraud detection results to Redis 'fraud_results' channel with transaction details - Add WebSocket connection logic in frontend with auto-reconnect (exponential backoff) - Display real-time consumer status panel with fraud score color coding and decision status - Implement client-side transaction results pagination (10/25/50 items per page) - Add pagination controls: Previous/Next buttons, page indicator, page size selector - Newest-first transaction sorting (DESC by timestamp) - Add comprehensive styling for consumer panel and pagination controls - All frontend components tested and builds successfully Co-authored-by: Copilot <[email protected]>
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Pat TeruelandCopilot committed
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@@ -345,3 +345,170 @@
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font-size: 0.8rem;
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}
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}
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/* Consumer Status Card */
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.consumer-card {
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border-top: 4px solid var(--primary);
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background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
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}
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.consumer-content {
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display: flex;
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flex-direction: column;
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gap: 1rem;
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}
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.connection-status {
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display: flex;
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justify-content: center;
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}
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.connection-status .status-badge {
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font-size: 0.875rem;
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padding: 0.5rem 1rem;
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}
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.connection-status .status-badge.connected {
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background: var(--success);
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color: white;
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}
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.connection-status .status-badge.disconnected {
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background: var(--error);
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color: white;
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}
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.empty-state {
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text-align: center;
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padding: 2rem 1rem;
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color: var(--text-light);
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}
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.empty-state p {
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margin: 0.5rem 0;
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}
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.consumer-status-details {
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display: flex;
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flex-direction: column;
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gap: 0.75rem;
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background: white;
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padding: 1rem;
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border-radius: 0.375rem;
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}
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.status-row {
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display: flex;
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justify-content: space-between;
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align-items: center;
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padding: 0.5rem 0;
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border-bottom: 1px solid var(--border);
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}
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.status-row:last-child {
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border-bottom: none;
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}
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.status-row label {
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font-weight: 600;
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color: var(--text);
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font-size: 0.875rem;
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min-width: 120px;
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}
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.status-row span {
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color: var(--text-light);
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font-size: 0.875rem;
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text-align: right;
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flex: 1;
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margin-left: 1rem;
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}
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/* Pagination Controls */
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.pagination-controls {
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display: flex;
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flex-direction: column;
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gap: 1rem;
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padding: 1rem;
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background: var(--bg);
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border-radius: 0.375rem;
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margin-bottom: 1rem;
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}
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.pagination-info {
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text-align: center;
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font-size: 0.875rem;
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color: var(--text-light);
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font-weight: 500;
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}
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.pagination-buttons {
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display: flex;
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align-items: center;
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justify-content: center;
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gap: 1rem;
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}
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.btn-pagination {
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display: flex;
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align-items: center;
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gap: 0.5rem;
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background: var(--primary);
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color: white;
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padding: 0.5rem 1rem;
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border: none;
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border-radius: 0.375rem;
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font-size: 0.875rem;
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font-weight: 500;
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cursor: pointer;
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transition: all 0.2s ease;
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min-width: 100px;
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justify-content: center;
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}
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.btn-pagination:hover:not(:disabled) {
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background: var(--primary-dark);
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transform: translateY(-2px);
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box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
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}
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.btn-pagination:disabled {
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opacity: 0.5;
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cursor: not-allowed;
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}
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.page-indicator {
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font-size: 0.875rem;
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font-weight: 600;
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color: var(--text);
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min-width: 120px;
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text-align: center;
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}
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.page-size-selector {
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display: flex;
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align-items: center;
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justify-content: center;
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gap: 0.75rem;
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}
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.page-size-selector label {
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font-size: 0.875rem;
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font-weight: 500;
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color: var(--text);
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}
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.select-input {
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padding: 0.5rem;
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border: 1px solid var(--border);
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border-radius: 0.375rem;
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font-size: 0.875rem;
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cursor: pointer;
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background: white;
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}
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.select-input:focus {
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outline: none;
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border-color: var(--primary);
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box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
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}
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+220
-3
@@ -1,5 +1,5 @@
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import React, { useState } from 'react';
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import { AlertCircle, CheckCircle, Clock, Lock, Send } from 'lucide-react';
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import React, { useState, useEffect, useRef } from 'react';
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import { AlertCircle, CheckCircle, Clock, Lock, Send, Wifi, WifiOff, ChevronLeft, ChevronRight } from 'lucide-react';
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import axios from 'axios';
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import './App.css';
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@@ -28,6 +28,15 @@ interface Result {
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timestamp: string;
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}
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interface FraudResult {
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transaction_id: string;
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decision: string;
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fraud_score: number;
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amount?: number;
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merchant?: string;
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timestamp: string;
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}
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// Use localhost when browser accesses from host machine
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const API_BASE_URL = 'http://localhost:8000';
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@@ -46,9 +55,72 @@ const App: React.FC = () => {
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});
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const [results, setResults] = useState<Result[]>([]);
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const [consumerStatus, setConsumerStatus] = useState<FraudResult | null>(null);
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const [wsConnected, setWsConnected] = useState(false);
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const [loading, setLoading] = useState(false);
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const [error, setError] = useState<string | null>(null);
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const [success, setSuccess] = useState<string | null>(null);
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// Pagination state
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const [currentPage, setCurrentPage] = useState(1);
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const [pageSize, setPageSize] = useState(25);
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const wsRef = useRef<WebSocket | null>(null);
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const reconnectTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
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// WebSocket connection management
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useEffect(() => {
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const connectWebSocket = () => {
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try {
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const wsUrl = 'ws://localhost:8000/ws/fraud-results';
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const ws = new WebSocket(wsUrl);
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ws.onopen = () => {
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console.log('[WEBSOCKET] Connected to fraud results stream');
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setWsConnected(true);
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};
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ws.onmessage = (event) => {
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try {
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const data = JSON.parse(event.data) as FraudResult;
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console.log('[WEBSOCKET] Received fraud result:', data);
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setConsumerStatus(data);
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} catch (e) {
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console.error('[WEBSOCKET] Failed to parse message:', e);
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}
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};
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ws.onerror = (error) => {
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console.error('[WEBSOCKET] Error:', error);
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setWsConnected(false);
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};
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ws.onclose = () => {
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console.log('[WEBSOCKET] Disconnected, attempting reconnect...');
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setWsConnected(false);
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// Exponential backoff reconnection: 1s → 2s → 4s → 8s
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const delay = Math.min(1000 * Math.pow(2, 3), 8000);
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reconnectTimeoutRef.current = setTimeout(connectWebSocket, delay);
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};
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wsRef.current = ws;
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} catch (e) {
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console.error('[WEBSOCKET] Connection failed:', e);
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setWsConnected(false);
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}
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};
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connectWebSocket();
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return () => {
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if (wsRef.current) {
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wsRef.current.close();
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}
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if (reconnectTimeoutRef.current) {
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clearTimeout(reconnectTimeoutRef.current);
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}
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};
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}, []);
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// Generate JWT token
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const generateToken = async () => {
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@@ -173,6 +245,19 @@ const App: React.FC = () => {
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});
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};
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// Pagination helpers
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const totalPages = Math.ceil(results.length / pageSize);
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const paginatedResults = results.slice(
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(currentPage - 1) * pageSize,
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currentPage * pageSize
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);
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const getFraudScoreColor = (score: number): string => {
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if (score < 0.3) return '#10b981'; // Green - low risk
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if (score < 0.7) return '#f59e0b'; // Yellow - medium risk
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return '#ef4444'; // Red - high risk
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};
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return (
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<div className="app">
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<div className="header">
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@@ -181,6 +266,88 @@ const App: React.FC = () => {
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</div>
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<div className="container">
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{/* Consumer Status Panel */}
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<section className="card consumer-card">
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<div className="card-header">
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<div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
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{wsConnected ? (
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<Wifi size={20} style={{ color: '#10b981' }} />
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) : (
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<WifiOff size={20} style={{ color: '#ef4444' }} />
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)}
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<h2>Real-Time Consumer Pipeline</h2>
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</div>
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</div>
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<div className="consumer-content">
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<div className="connection-status">
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<span className={`status-badge ${wsConnected ? 'connected' : 'disconnected'}`}>
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{wsConnected ? '● Connected' : '● Disconnected'}
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</span>
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</div>
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{consumerStatus ? (
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<div className="consumer-status-details">
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<div className="status-row">
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<label>Transaction ID:</label>
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<span>{consumerStatus.transaction_id.substring(0, 12)}...</span>
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</div>
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{consumerStatus.amount && (
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<div className="status-row">
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<label>Amount:</label>
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<span>${consumerStatus.amount.toFixed(2)}</span>
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</div>
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)}
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{consumerStatus.merchant && (
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<div className="status-row">
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<label>Merchant:</label>
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<span>{consumerStatus.merchant}</span>
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</div>
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)}
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<div className="status-row">
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<label>Fraud Score:</label>
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<div
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style={{
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padding: '4px 8px',
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backgroundColor: getFraudScoreColor(consumerStatus.fraud_score),
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color: 'white',
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borderRadius: '4px',
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fontWeight: 'bold',
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}}
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>
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{(consumerStatus.fraud_score * 100).toFixed(1)}%
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</div>
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</div>
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<div className="status-row">
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<label>Decision:</label>
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<div
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style={{
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padding: '4px 8px',
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backgroundColor: consumerStatus.decision === 'blocked' ? '#ef4444' : '#10b981',
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color: 'white',
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borderRadius: '4px',
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fontWeight: 'bold',
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textTransform: 'uppercase',
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}}
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>
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{consumerStatus.decision}
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</div>
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</div>
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<div className="status-row">
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<label>Processed:</label>
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<span>{new Date(consumerStatus.timestamp).toLocaleString()}</span>
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</div>
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</div>
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) : (
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<div className="empty-state">
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<p>Waiting for fraud detection results...</p>
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<p style={{ fontSize: '12px', color: '#6b7280' }}>
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Submit transactions to see results
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</p>
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</div>
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)}
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</div>
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</section>
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{/* Authentication Section */}
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<section className="card auth-card">
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<div className="card-header">
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@@ -308,8 +475,58 @@ const App: React.FC = () => {
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<Clock size={20} />
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<h2>Transaction Results</h2>
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</div>
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{/* Pagination Controls */}
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<div className="pagination-controls">
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<div className="pagination-info">
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<span>
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Showing {paginatedResults.length > 0 ? (currentPage - 1) * pageSize + 1 : 0}–
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{Math.min(currentPage * pageSize, results.length)} of {results.length} transactions
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</span>
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</div>
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<div className="pagination-buttons">
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<button
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onClick={() => setCurrentPage(Math.max(1, currentPage - 1))}
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disabled={currentPage === 1}
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className="btn btn-pagination"
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>
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<ChevronLeft size={16} /> Previous
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</button>
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<span className="page-indicator">
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Page {currentPage} of {totalPages || 1}
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</span>
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<button
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onClick={() => setCurrentPage(Math.min(totalPages, currentPage + 1))}
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disabled={currentPage === totalPages}
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className="btn btn-pagination"
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>
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Next <ChevronRight size={16} />
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</button>
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</div>
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<div className="page-size-selector">
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<label>Items per page:</label>
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<select
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value={pageSize}
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onChange={(e) => {
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setPageSize(parseInt(e.target.value));
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setCurrentPage(1); // Reset to first page
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}}
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className="select-input"
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>
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<option value={10}>10</option>
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<option value={25}>25</option>
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<option value={50}>50</option>
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</select>
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</div>
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</div>
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{/* Results List */}
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<div className="results-list">
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{results.map((result, idx) => (
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{paginatedResults.map((result, idx) => (
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<div key={idx} className="result-item">
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<div className="result-content">
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<p className="result-id">
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Reference in new issue
Block a user