INNER CODE UNIT · JavaScript

handleRenewal

adeekshith/watomatic · functions/index.js:1216

async function handleRenewal(userId, subscription, eventTimeMillis) {
    logger.info('Subscription renewed', { userId });

    const lineItem = subscription.lineItems?.[0];
    const expiryTime = lineItem?.expiryTime ? new Date(lineItem.expiryTime).getTime() : 0;

    // CRITICAL FIX #3: Store renewal as a separate document keyed by expiryTime
    // This ensures idempotency - same renewal processed multiple times = same document
    const renewalKey = `renewal_${expiryTime}`;
    const renewalRef = admin.firestore()
        .collection('users')
        .doc(userId)
        .collection('renewal_events')
        .doc(renewalKey);

    // Check if this renewal was already recorded
    const existingRenewal = await renewalRef.get();
    if (existingRenewal.exists) {

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