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* WatchPairingSection Component
* Story W2.1: Pairing Code Backend & Web Frontend
*
* Allows organizers to:
* - Generate a pairing code (AC1) — visible when <2 watches paired
* - See paired watches with Unpair button (AC4)
* - View pending code with countdown (AC1, AC3)
* - See error when max watches reached (AC2)
*/
import React, { useState, useEffect, useCallback } from 'react';
import { Alert, Box, Button, Typography } from '@mui/material';
import { BATbernLoader } from '@components/shared/BATbernLoader';
import WatchIcon from '@mui/icons-material/Watch';
import PairingCodeDisplay from './PairingCodeDisplay';
import PairedWatchCard from './PairedWatchCard';
import watchPairingApi from '@/services/api/watchPairingApi';
import type { PairingStatusResponse } from '@/types/watch';
interface WatchPairingSectionProps {
username: string;
}
const WatchPairingSection: React.FC<WatchPairingSectionProps> = ({ username }) => {
const [status, setStatus] = useState<PairingStatusResponse | null>(null);
const [isLoading, setIsLoading] = useState(true);
const [isGenerating, setIsGenerating] = useState(false);
const [unpairingDevice, setUnpairingDevice] = useState<string | null>(null);
const [error, setError] = useState<string | null>(null);
const loadStatus = useCallback(async () => {
try {
const data = await watchPairingApi.getPairingStatus(username);
setStatus(data);
} catch (err: unknown) {
const axiosErr = err as { response?: { status?: number } };
Iif (axiosErr?.response?.status === 404) {
// No pairings yet — treat as empty
setStatus({ pairedWatches: [], pendingCode: null });
} else {
// Real error (network failure, 500, etc.) — surface it to the user
setError('Failed to load pairing status. Please refresh the page.');
setStatus({ pairedWatches: [], pendingCode: null });
}
} finally {
setIsLoading(false);
}
}, [username]);
useEffect(() => {
loadStatus();
}, [loadStatus]);
const handleGenerateCode = async () => {
setIsGenerating(true);
setError(null);
try {
await watchPairingApi.generatePairingCode(username);
await loadStatus();
} catch (err: unknown) {
const axiosErr = err as { response?: { status?: number } };
if (axiosErr?.response?.status === 409) {
setError('Maximum 2 watches paired. Unpair a device first.');
} else E{
setError('Failed to generate pairing code. Please try again.');
}
} finally {
setIsGenerating(false);
}
};
const handleUnpair = async (watchId: string) => {
setUnpairingDevice(watchId);
setError(null);
try {
await watchPairingApi.unpairWatch(username, watchId);
await loadStatus();
} catch {
setError('Failed to unpair device. Please try again.');
} finally {
setUnpairingDevice(null);
}
};
const canGenerateCode = status !== null && !status.pendingCode && status.pairedWatches.length < 2;
if (isLoading) {
return (
<Box sx={{ display: 'flex', justifyContent: 'center', p: 2 }}>
<BATbernLoader size={48} />
</Box>
);
}
return (
<Box data-testid="watch-pairing-section">
<Box sx={{ display: 'flex', alignItems: 'center', gap: 1, mb: 2 }}>
<WatchIcon />
<Typography variant="h6">Apple Watch Pairing</Typography>
</Box>
{error && (
<Alert severity="error" sx={{ mb: 2 }} data-testid="watch-pairing-error">
{error}
</Alert>
)}
{status?.pendingCode && (
<Box sx={{ mb: 2 }}>
<PairingCodeDisplay pendingCode={status.pendingCode} />
</Box>
)}
{status?.pairedWatches && status.pairedWatches.length > 0 && (
<Box sx={{ mb: 2 }}>
{status.pairedWatches.map((watch) => (
<PairedWatchCard
key={watch.id}
watch={watch}
onUnpair={handleUnpair}
isUnpairing={unpairingDevice === watch.id}
/>
))}
</Box>
)}
{canGenerateCode && (
<Button
variant="outlined"
startIcon={<WatchIcon />}
onClick={handleGenerateCode}
disabled={isGenerating}
data-testid="pair-watch-button"
>
{isGenerating ? 'Generating...' : 'Pair Apple Watch'}
</Button>
)}
</Box>
);
};
export default WatchPairingSection;
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