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Capture — offline queue via IndexedDB, retry on focus/online, queued state

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This commit is contained in:
Aaron Nelson
2026-04-26 22:30:43 -04:00
parent 6110299422
commit 2c295b800e
1 changed files with 125 additions and 53 deletions
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app/capture/page.tsx
+119 -47
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@@ -3,11 +3,66 @@
import { useState, useRef, useEffect } from 'react';
const API_URL = process.env.NEXT_PUBLIC_API_URL || '';
const DB_NAME = 'bird-capture-queue';
const STORE_NAME = 'pending';
// IndexedDB queue for offline captures
async function openDB(): Promise<IDBDatabase> {
return new Promise((resolve, reject) => {
const req = indexedDB.open(DB_NAME, 1);
req.onupgradeneeded = () => req.result.createObjectStore(STORE_NAME, { keyPath: 'id' });
req.onsuccess = () => resolve(req.result);
req.onerror = () => reject(req.error);
});
}
async function queueCapture(blob: Blob, mimeType: string) {
const db = await openDB();
const id = Date.now().toString();
return new Promise<void>((resolve, reject) => {
const tx = db.transaction(STORE_NAME, 'readwrite');
tx.objectStore(STORE_NAME).put({ id, blob, mimeType, timestamp: new Date().toISOString() });
tx.oncomplete = () => resolve();
tx.onerror = () => reject(tx.error);
});
}
async function getPendingCaptures(): Promise<any[]> {
const db = await openDB();
return new Promise((resolve, reject) => {
const tx = db.transaction(STORE_NAME, 'readonly');
const req = tx.objectStore(STORE_NAME).getAll();
req.onsuccess = () => resolve(req.result);
req.onerror = () => reject(req.error);
});
}
async function removeCapture(id: string) {
const db = await openDB();
return new Promise<void>((resolve, reject) => {
const tx = db.transaction(STORE_NAME, 'readwrite');
tx.objectStore(STORE_NAME).delete(id);
tx.oncomplete = () => resolve();
tx.onerror = () => reject(tx.error);
});
}
async function submitCapture(blob: Blob, mimeType: string): Promise<boolean> {
try {
const form = new FormData();
form.append('audio', blob, 'capture.webm');
const res = await fetch(`${API_URL}/api/capture`, { method: 'POST', body: form });
return res.ok;
} catch {
return false;
}
}
export default function CapturePage() {
const [state, setState] = useState<'idle' | 'recording' | 'transcribing' | 'saved' | 'error'>('idle');
const [state, setState] = useState<'idle' | 'recording' | 'transcribing' | 'saved' | 'queued' | 'error'>('idle');
const [countdown, setCountdown] = useState(0);
const [recentCaptures, setRecentCaptures] = useState<{name: string, duration: string}[]>([]);
const [pendingCount, setPendingCount] = useState(0);
const mediaRecorderRef = useRef<MediaRecorder | null>(null);
const chunksRef = useRef<Blob[]>([]);
const streamRef = useRef<MediaStream | null>(null);
@@ -18,6 +73,14 @@ export default function CapturePage() {
useEffect(() => {
loadRecentCaptures();
checkPendingQueue();
// Retry queue on focus (when user returns to app)
window.addEventListener('focus', retryQueue);
window.addEventListener('online', retryQueue);
return () => {
window.removeEventListener('focus', retryQueue);
window.removeEventListener('online', retryQueue);
};
}, []);
async function loadRecentCaptures() {
@@ -30,6 +93,31 @@ export default function CapturePage() {
} catch {}
}
async function checkPendingQueue() {
try {
const pending = await getPendingCaptures();
setPendingCount(pending.length);
} catch {}
}
async function retryQueue() {
try {
const pending = await getPendingCaptures();
if (pending.length === 0) return;
for (const item of pending) {
const ok = await submitCapture(item.blob, item.mimeType);
if (ok) {
await removeCapture(item.id);
}
}
const remaining = await getPendingCaptures();
setPendingCount(remaining.length);
if (remaining.length < pending.length) {
await loadRecentCaptures();
}
} catch {}
}
async function acquireWakeLock() {
try {
if ('wakeLock' in navigator) {
@@ -55,28 +143,26 @@ export default function CapturePage() {
const mr = new MediaRecorder(streamRef.current, { mimeType });
mr.ondataavailable = e => { if (e.data.size > 0) chunksRef.current.push(e.data); };
mr.onstop = async () => {
// Release microphone immediately after stopping
streamRef.current?.getTracks().forEach(t => t.stop());
streamRef.current = null;
if (chunksRef.current.length === 0) return;
setState('transcribing');
try {
const blob = new Blob(chunksRef.current, { type: mimeTypeRef.current });
const form = new FormData();
form.append('audio', blob, 'capture.webm');
const res = await fetch(`${API_URL}/api/capture`, { method: 'POST', body: form });
if (res.ok) {
const ok = await submitCapture(blob, mimeTypeRef.current);
if (ok) {
setState('saved');
await loadRecentCaptures();
setTimeout(() => setState('idle'), 3000);
} else {
setState('error');
setTimeout(() => setState('idle'), 3000);
}
// Queue for later — don't lose the capture
try {
await queueCapture(blob, mimeTypeRef.current);
await checkPendingQueue();
setState('queued');
} catch {
setState('error');
setTimeout(() => setState('idle'), 3000);
}
setTimeout(() => setState('idle'), 4000);
}
};
mr.start(1000);
@@ -127,35 +213,27 @@ export default function CapturePage() {
{/* Header */}
<div style={{ textAlign: 'center' }}>
<p style={{
fontSize: '10px',
letterSpacing: '0.15em',
color: 'var(--text3)',
textTransform: 'uppercase',
margin: 0,
}}>
<p style={{ fontSize: '10px', letterSpacing: '0.15em', color: 'var(--text3)', textTransform: 'uppercase', margin: 0 }}>
Bird — field recorder
</p>
{pendingCount > 0 && (
<p style={{ fontSize: '9px', color: '#c8821a', letterSpacing: '0.1em', margin: '4px 0 0', textTransform: 'uppercase' }}>
{pendingCount} capture{pendingCount > 1 ? 's' : ''} queued — will sync when online
</p>
)}
</div>
{/* Main button area */}
<div style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', gap: '40px' }}>
{/* Waveform — decorative */}
{/* Waveform */}
<div style={{
display: 'flex',
alignItems: 'center',
gap: '3px',
height: '40px',
opacity: isRecording ? 1 : 0.2,
transition: 'opacity 0.4s ease',
display: 'flex', alignItems: 'center', gap: '3px', height: '40px',
opacity: isRecording ? 1 : 0.2, transition: 'opacity 0.4s ease',
}}>
{[4,8,16,6,24,10,32,14,20,8,12,28,6,18,4,22,10,16,8,4].map((h, i) => (
<div key={i} style={{
width: '2px',
height: `${h}px`,
background: 'var(--accent)',
borderRadius: '1px',
width: '2px', height: `${h}px`, background: 'var(--accent)', borderRadius: '1px',
animation: isRecording ? `wave ${0.8 + (i % 4) * 0.2}s ease-in-out infinite alternate` : 'none',
}} />
))}
@@ -166,17 +244,12 @@ export default function CapturePage() {
onPointerUp={handleTap}
disabled={isBusy}
style={{
width: '160px',
height: '160px',
borderRadius: '50%',
width: '160px', height: '160px', borderRadius: '50%',
border: `1.5px solid ${isRecording ? '#a32d2d' : 'var(--accent)'}`,
background: isRecording ? 'rgba(163,45,45,0.08)' : 'var(--bg2)',
cursor: isBusy ? 'not-allowed' : 'pointer',
display: 'flex',
alignItems: 'center',
justifyContent: 'center',
transition: 'all 0.3s ease',
touchAction: 'manipulation',
display: 'flex', alignItems: 'center', justifyContent: 'center',
transition: 'all 0.3s ease', touchAction: 'manipulation',
animation: isBusy ? 'none' : isRecording ? 'recordPulse 1.5s ease-in-out infinite' : 'idlePulse 3s ease-in-out infinite',
}}
aria-label={isRecording ? 'Stop recording' : 'Start recording'}
@@ -220,7 +293,7 @@ export default function CapturePage() {
transition: 'width 1s linear, background 0.5s ease',
}} />
</div>
<p style={{ fontSize: '11px', color: 'var(--text3)', letterSpacing: '0.08em', margin: 0, fontFamily: 'var(--font-mono)' }}>
<p style={{ fontSize: '11px', color: 'var(--text3)', letterSpacing: '0.08em', margin: 0 }}>
{(() => {
const elapsed = MAX_SECONDS - countdown;
const em = Math.floor(elapsed / 60);
@@ -242,6 +315,11 @@ export default function CapturePage() {
saved ✓
</p>
)}
{state === 'queued' && (
<p style={{ fontSize: '11px', color: '#c8821a', letterSpacing: '0.12em', textTransform: 'uppercase', margin: 0 }}>
queued — will sync when online
</p>
)}
{state === 'error' && (
<p style={{ fontSize: '11px', color: '#a32d2d', letterSpacing: '0.12em', textTransform: 'uppercase', margin: 0 }}>
error — try again
@@ -261,19 +339,13 @@ export default function CapturePage() {
<div style={{ display: 'flex', flexDirection: 'column', gap: '6px' }}>
{recentCaptures.slice(0, 4).map((c, i) => (
<div key={i} style={{
display: 'flex',
alignItems: 'center',
gap: '8px',
padding: '8px 10px',
background: 'var(--bg2)',
borderRadius: '6px',
border: '1px solid var(--border)',
display: 'flex', alignItems: 'center', gap: '8px', padding: '8px 10px',
background: 'var(--bg2)', borderRadius: '6px', border: '1px solid var(--border)',
}}>
<div style={{ width: '4px', height: '4px', borderRadius: '50%', background: 'var(--accent)', flexShrink: 0 }} />
<span style={{ fontSize: '10px', color: 'var(--text2)', flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
{c.name}
</span>
<span style={{ fontSize: '9px', color: 'var(--text3)' }}>{c.duration}</span>
</div>
))}
</div>