Allow Lightning invoice reuse and re-payment from the dashboard.

Store LNbits invoice data on payments, add an invoice endpoint that reuses valid invoices or regenerates expired ones, and wire the booking payment page to fetch and display invoices via a shared watcher hook.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/routes/tickets.ts

@@ -4,8 +4,8 @@ import { z } from 'zod';
 import { db, dbGet, dbAll, tickets, events, users, payments, paymentOptions, eventPaymentOverrides, siteSettings, isSqlite } from '../db/index.js';
 import { eq, and, or, sql, inArray } from 'drizzle-orm';
 import { requireAuth, getAuthUser } from '../lib/auth.js';
-import { generateId, generateTicketCode, getNow, calculateAvailableSeats, isEventSoldOut } from '../lib/utils.js';
-import { createInvoice, isLNbitsConfigured } from '../lib/lnbits.js';
+import { generateId, generateTicketCode, getNow, toDbDate, calculateAvailableSeats, isEventSoldOut } from '../lib/utils.js';
+import { createInvoice, isLNbitsConfigured, LNBITS_INVOICE_EXPIRY_SECONDS } from '../lib/lnbits.js';
 import { rateLimitMiddleware } from '../lib/rateLimit.js';
 import emailService from '../lib/email.js';
 import { generateTicketPDF, generateCombinedTicketsPDF } from '../lib/pdf.js';
@@ -418,7 +418,7 @@ ticketsRouter.post('/', zValidator('json', createTicketSchema), async (c) => {
         unit: event.currency, // LNbits supports fiat currencies like USD, PYG, etc.
         memo: `Spanglish: ${event.title} - ${fullName}${ticketCount > 1 ? ` (${ticketCount} tickets)` : ''}`,
         webhookUrl,
-        expiry: 900, // 15 minutes expiry for faster UX
+        expiry: LNBITS_INVOICE_EXPIRY_SECONDS, // 15 minutes expiry for faster UX
         extra: {
           ticketId: primaryTicket.id,
           bookingId: ticketCount > 1 ? bookingId : null,
@@ -430,13 +430,22 @@ ticketsRouter.post('/', zValidator('json', createTicketSchema), async (c) => {
           ticketCount,
         },
       });
-      
-      // Update primary payment with LNbits payment hash reference
+
+      const lnbitsExpiresAt = toDbDate(new Date(Date.now() + LNBITS_INVOICE_EXPIRY_SECONDS * 1000));
+
+      // Update primary payment with the LNbits invoice - the BOLT11 string and
+      // expiry are persisted so the "Pay now" page can redisplay this same
+      // invoice later instead of erroring out on an unpaid Lightning booking.
       await (db as any)
         .update(payments)
-        .set({ reference: lnbitsInvoice.paymentHash })
+        .set({
+          reference: lnbitsInvoice.paymentHash,
+          lnbitsInvoice: lnbitsInvoice.paymentRequest,
+          lnbitsExpiresAt,
+          lnbitsAmountSats: lnbitsInvoice.amount,
+        })
         .where(eq((payments as any).id, primaryPayment.id));
-        
+
       (primaryPayment as any).reference = lnbitsInvoice.paymentHash;
     } catch (error: any) {
       console.error('Failed to create Lightning invoice:', error);