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import React, { useState, useEffect } from 'react';
import type { ConnectionStatus } from '@/hooks/useRealtimeMetrics';
export interface LiveIndicatorProps {
/** Connection status */
status: ConnectionStatus;
/** Last update timestamp */
lastUpdate: Date | null;
/** Whether using polling fallback */
isPolling?: boolean;
/** Callback to manually reconnect */
onReconnect?: () => void;
/** Show compact version */
compact?: boolean;
/** Additional CSS classes */
className?: string;
}
/**
* Status configuration
*/
const statusConfig: Record<
ConnectionStatus,
{ color: string; bgColor: string; pulseColor: string; label: string }
> = {
connected: {
color: 'bg-green-500',
bgColor: 'bg-green-100 dark:bg-green-900/30',
pulseColor: 'bg-green-400',
label: 'Live',
},
connecting: {
color: 'bg-blue-500',
bgColor: 'bg-blue-100 dark:bg-blue-900/30',
pulseColor: 'bg-blue-400',
label: 'Connecting',
},
reconnecting: {
color: 'bg-yellow-500',
bgColor: 'bg-yellow-100 dark:bg-yellow-900/30',
pulseColor: 'bg-yellow-400',
label: 'Reconnecting',
},
disconnected: {
color: 'bg-red-500',
bgColor: 'bg-red-100 dark:bg-red-900/30',
pulseColor: 'bg-red-400',
label: 'Disconnected',
},
polling: {
color: 'bg-orange-500',
bgColor: 'bg-orange-100 dark:bg-orange-900/30',
pulseColor: 'bg-orange-400',
label: 'Polling',
},
};
/**
* Format relative time
*/
function formatRelativeTime(date: Date): string {
const now = new Date();
const diffMs = now.getTime() - date.getTime();
const diffSec = Math.floor(diffMs / 1000);
if (diffSec < 5) return 'just now';
if (diffSec < 60) return `${diffSec}s ago`;
const diffMin = Math.floor(diffSec / 60);
if (diffMin < 60) return `${diffMin}m ago`;
const diffHour = Math.floor(diffMin / 60);
return `${diffHour}h ago`;
}
/**
* LiveIndicator Component
*
* Shows real-time connection status with animated indicator.
*/
export function LiveIndicator({
status,
lastUpdate,
isPolling = false,
onReconnect,
compact = false,
className = '',
}: LiveIndicatorProps) {
const [relativeTime, setRelativeTime] = useState<string>('');
const config = statusConfig[status];
// Update relative time every second
useEffect(() => {
if (!lastUpdate) return;
const updateTime = () => {
setRelativeTime(formatRelativeTime(lastUpdate));
};
updateTime();
const intervalId = setInterval(updateTime, 1000);
return () => clearInterval(intervalId);
}, [lastUpdate]);
if (compact) {
return (
<div
className={`flex items-center gap-1.5 ${className}`}
title={`${config.label}${lastUpdate ? ` - Updated ${relativeTime}` : ''}`}
data-testid="live-indicator"
>
<span className="relative flex h-2.5 w-2.5">
{(status === 'connected' || status === 'connecting' || status === 'reconnecting') && (
<span
className={`absolute inline-flex h-full w-full animate-ping rounded-full opacity-75 ${config.pulseColor}`}
/>
)}
<span className={`relative inline-flex h-2.5 w-2.5 rounded-full ${config.color}`} />
</span>
{status === 'connected' && (
<span className="text-xs font-medium text-green-600 dark:text-green-400">LIVE</span>
)}
</div>
);
}
return (
<div
className={`flex items-center gap-3 px-3 py-2 rounded-lg ${config.bgColor} ${className}`}
data-testid="live-indicator"
>
{/* Status Dot */}
<span className="relative flex h-3 w-3">
{(status === 'connected' || status === 'connecting' || status === 'reconnecting') && (
<span
className={`absolute inline-flex h-full w-full animate-ping rounded-full opacity-75 ${config.pulseColor}`}
/>
)}
<span className={`relative inline-flex h-3 w-3 rounded-full ${config.color}`} />
</span>
{/* Status Text */}
<div className="flex flex-col">
<span className="text-sm font-medium text-gray-900 dark:text-white flex items-center gap-2">
{config.label}
{isPolling && status === 'polling' && (
<span className="text-xs text-gray-500 dark:text-gray-400">(Fallback)</span>
)}
</span>
{lastUpdate && (
<span className="text-xs text-gray-500 dark:text-gray-400">Updated {relativeTime}</span>
)}
</div>
{/* Reconnect Button (shown when disconnected) */}
{status === 'disconnected' && onReconnect && (
<button
onClick={onReconnect}
className="ml-auto px-2 py-1 text-xs font-medium text-white bg-blue-600 hover:bg-blue-700 rounded transition-colors"
data-testid="reconnect-button"
>
Reconnect
</button>
)}
</div>
);
}
export default LiveIndicator;
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