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* Spectrogram Viewer Component
* Displays spectrogram visualization for RF signal data
*
* Note: This is a placeholder implementation for Phase 7
* Full spectrogram generation will be implemented in Phase 8 when backend provides data
*/
import React from 'react';
import { ZoomIn, ZoomOut, Maximize2 } from 'lucide-react';
import { Button } from './ui/button';
interface SpectrogramViewerProps {
sessionId?: number;
websdrId?: number;
websdrName?: string;
snr?: number;
className?: string;
}
export const SpectrogramViewer: React.FC<SpectrogramViewerProps> = ({
sessionId,
websdrId,
websdrName = 'WebSDR',
snr,
className = '',
}) => {
// Placeholder: In Phase 8, this will fetch actual spectrogram from backend
// const spectrogramUrl = `/api/v1/sessions/${sessionId}/spectrogram/${websdrId}`;
const getSNRColor = (snrValue?: number) => {
if (!snrValue) return 'text-slate-400';
if (snrValue > 20) return 'text-green-400'; // Good
if (snrValue >= 10) return 'text-yellow-400'; // Marginal
return 'text-red-400'; // Poor
};
const getSNRLabel = (snrValue?: number) => {
if (!snrValue) return 'N/A';
if (snrValue > 20) return 'Good';
if (snrValue >= 10) return 'Marginal';
return 'Poor';
};
return (
<div className={`bg-slate-800 border border-slate-700 rounded-lg overflow-hidden ${className}`}>
{/* Header */}
<div className="px-3 py-2 bg-slate-900 border-b border-slate-700 flex items-center justify-between">
<div className="flex items-center gap-2">
<h4 className="text-sm font-semibold text-white">{websdrName}</h4>
{snr !== undefined && (
<span className={`text-xs font-medium ${getSNRColor(snr)}`}>
SNR: {snr.toFixed(1)} dB ({getSNRLabel(snr)})
</span>
)}
</div>
{/* Zoom controls (placeholder for Phase 8) */}
<div className="flex gap-1">
<Button
size="sm"
variant="ghost"
className="h-6 w-6 p-0 text-slate-400 hover:text-white"
title="Zoom in"
disabled
>
<ZoomIn className="w-3 h-3" />
</Button>
<Button
size="sm"
variant="ghost"
className="h-6 w-6 p-0 text-slate-400 hover:text-white"
title="Zoom out"
disabled
>
<ZoomOut className="w-3 h-3" />
</Button>
<Button
size="sm"
variant="ghost"
className="h-6 w-6 p-0 text-slate-400 hover:text-white"
title="Fullscreen"
disabled
>
<Maximize2 className="w-3 h-3" />
</Button>
</div>
</div>
{/* Spectrogram Display - Placeholder */}
<div className="aspect-video bg-slate-950 flex items-center justify-center relative">
{/* Placeholder grid pattern */}
<div className="absolute inset-0 opacity-10"
style={{
backgroundImage: `
linear-gradient(to right, #475569 1px, transparent 1px),
linear-gradient(to bottom, #475569 1px, transparent 1px)
`,
backgroundSize: '20px 20px'
}}
/>
{/* Placeholder text */}
<div className="text-center z-10">
<p className="text-slate-500 text-sm mb-1">Spectrogram Preview</p>
<p className="text-slate-600 text-xs">
{sessionId ? `Session ${sessionId} - WebSDR ${websdrId}` : 'No data available'}
</p>
<p className="text-slate-700 text-xs mt-2">
(Full implementation in Phase 8)
</p>
</div>
{/* Frequency/Time axis labels (placeholder) */}
<div className="absolute bottom-2 left-2 text-xs text-slate-600">
Time →
</div>
<div className="absolute top-2 left-2 text-xs text-slate-600 transform -rotate-90 origin-left">
Frequency ↑
</div>
</div>
</div>
);
};
export default SpectrogramViewer;
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