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import { useState } from 'react'
import { Layout } from './components/Layout'
import { CaseSelector } from './components/CaseSelector'
import { NiiVueViewer } from './components/NiiVueViewer'
import { MetricsPanel } from './components/MetricsPanel'
import { ProgressIndicator } from './components/ProgressIndicator'
import { useSegmentation } from './hooks/useSegmentation'
export default function App() {
const [selectedCase, setSelectedCase] = useState<string | null>(null)
const {
result,
isLoading,
error,
jobStatus,
progress,
progressMessage,
elapsedSeconds,
runSegmentation,
cancelJob,
} = useSegmentation()
const handleRunSegmentation = async () => {
if (selectedCase) {
await runSegmentation(selectedCase)
}
}
// Show progress indicator when job is active
const showProgress = isLoading && jobStatus && jobStatus !== 'completed'
return (
<Layout>
<div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
{/* Left Panel: Controls */}
<div className="space-y-4">
<CaseSelector
selectedCase={selectedCase}
onSelectCase={setSelectedCase}
/>
<button
onClick={handleRunSegmentation}
disabled={!selectedCase || isLoading}
className="w-full bg-blue-600 hover:bg-blue-700 disabled:bg-gray-600
disabled:cursor-not-allowed text-white font-medium
py-3 px-4 rounded-lg transition-colors"
>
{isLoading ? 'Processing...' : 'Run Segmentation'}
</button>
{/* Cancel button when processing */}
{isLoading && (
<button
onClick={cancelJob}
className="w-full bg-gray-700 hover:bg-gray-600 text-gray-300
font-medium py-2 px-4 rounded-lg transition-colors text-sm"
>
Cancel
</button>
)}
{/* Progress indicator */}
{showProgress && (
<ProgressIndicator
progress={progress}
message={progressMessage}
status={jobStatus}
elapsedSeconds={elapsedSeconds}
/>
)}
{/* Error display */}
{error && !isLoading && (
<div
role="alert"
className="bg-red-900/50 text-red-300 p-3 rounded-lg text-sm"
>
<p className="font-medium">Error</p>
<p className="mt-1">{error}</p>
</div>
)}
{/* Results metrics */}
{result && <MetricsPanel metrics={result.metrics} />}
</div>
{/* Right Panel: Viewer */}
<div className="lg:col-span-2">
{result ? (
<NiiVueViewer
backgroundUrl={result.dwiUrl}
overlayUrl={result.predictionUrl}
/>
) : (
<div className="bg-gray-900 rounded-lg h-[500px] flex items-center justify-center">
<p className="text-gray-400">
{isLoading
? 'Processing segmentation...'
: 'Select a case and run segmentation to view results'}
</p>
</div>
)}
</div>
</div>
</Layout>
)
}
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