fix: BookingConfirmPage date format + guest confirmation email on payment

- Fix date display: slice ISO timestamp to first 10 chars before splitting
- Add sendBookingConfirmedEmail() to email.ts — sends green styled HTML email
  with booking details (dates, amount) on payment.succeeded webhook
- Webhook now sends confirmation email to guest email if present

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/src/email.ts

@@ -125,3 +125,67 @@ export async function sendConfirmationEmail(to: string, name: string, token: str
     },
   })
 }
+
+function fmtDate(d: string): string {
+  const [y, m, day] = d.slice(0, 10).split('-')
+  return `${day}.${m}.${y}`
+}
+
+export async function sendBookingConfirmedEmail(params: {
+  to: string
+  guestName: string
+  hotelName: string
+  checkIn: string
+  checkOut: string
+  totalAmount: number | string
+  bookingConfirmUrl: string
+}): Promise<void> {
+  const { to, guestName, hotelName, checkIn, checkOut, totalAmount, bookingConfirmUrl } = params
+  const amount = new Intl.NumberFormat('ru-RU').format(Number(totalAmount))
+  const firstName = guestName.split(' ')[0] ?? guestName
+
+  const html = baseHtml(
+    'linear-gradient(135deg,#059669,#10b981)',
+    '✅',
+    'Бронирование подтверждено',
+    `<h2 style="color:#1e293b;font-size:20px;margin:0 0 12px;font-weight:600;">Бронирование подтверждено!</h2>
+      <p style="color:#334155;line-height:1.7;margin:0 0 20px;font-size:15px;">Привет, ${firstName}! Ваш платёж получен и бронирование в <strong>${hotelName}</strong> подтверждено.</p>
+      <table style="width:100%;border-collapse:collapse;margin:0 0 24px;background:#f8fafc;border-radius:10px;overflow:hidden;">
+        <tr>
+          <td style="padding:12px 16px;color:#64748b;font-size:14px;border-bottom:1px solid #e2e8f0;">Гость</td>
+          <td style="padding:12px 16px;color:#1e293b;font-size:14px;font-weight:600;border-bottom:1px solid #e2e8f0;text-align:right;">${guestName}</td>
+        </tr>
+        <tr>
+          <td style="padding:12px 16px;color:#64748b;font-size:14px;border-bottom:1px solid #e2e8f0;">Заезд</td>
+          <td style="padding:12px 16px;color:#1e293b;font-size:14px;font-weight:600;border-bottom:1px solid #e2e8f0;text-align:right;">${fmtDate(checkIn)}</td>
+        </tr>
+        <tr>
+          <td style="padding:12px 16px;color:#64748b;font-size:14px;border-bottom:1px solid #e2e8f0;">Выезд</td>
+          <td style="padding:12px 16px;color:#1e293b;font-size:14px;font-weight:600;border-bottom:1px solid #e2e8f0;text-align:right;">${fmtDate(checkOut)}</td>
+        </tr>
+        <tr>
+          <td style="padding:12px 16px;color:#64748b;font-size:14px;">Сумма оплачена</td>
+          <td style="padding:12px 16px;color:#059669;font-size:14px;font-weight:700;text-align:right;">${amount} ₽</td>
+        </tr>
+      </table>
+      <div style="text-align:center;margin:0 0 24px;">
+        <a href="${bookingConfirmUrl}" style="display:inline-block;background:#059669;color:#ffffff;text-decoration:none;padding:14px 36px;border-radius:10px;font-weight:600;font-size:16px;">
+          Посмотреть бронирование
+        </a>
+      </div>
+      <p style="color:#475569;font-size:13px;margin:0;line-height:1.6;text-align:center;">
+        Ждём вас в ${hotelName}! Если есть вопросы — свяжитесь с нами напрямую.
+      </p>`,
+  )
+
+  const text = `Бронирование подтверждено — ${hotelName}\n\nПривет, ${firstName}!\n\nВаш платёж получен и бронирование подтверждено.\n\nГость: ${guestName}\nЗаезд: ${fmtDate(checkIn)}\nВыезд: ${fmtDate(checkOut)}\nОплачено: ${amount} ₽\n\nДо встречи!\n© 2026 HotelSync`
+
+  await transporter.sendMail({
+    from: `"${hotelName}" <${fromAddr()}>`,
+    to,
+    subject: `Бронирование подтверждено — ${hotelName}`,
+    html,
+    text,
+    headers: { 'Content-Language': 'ru' },
+  })
+}

backend/src/routes/yookassaWebhook.ts

@@ -1,6 +1,7 @@
 import { FastifyPluginAsync } from 'fastify'
 import { db } from '../db'
 import { broadcast } from './ws'
+import { sendBookingConfirmedEmail } from '../email'
 
 const yookassaWebhookRoutes: FastifyPluginAsync = async (fastify) => {
   // POST /api/yookassa/webhook
@@ -19,8 +20,11 @@ const yookassaWebhookRoutes: FastifyPluginAsync = async (fastify) => {
       const { rows } = await db.query<{
         id: string; hotel_id: string; booking_id: string | null
         total_amount: string; slug: string
+        guest_name: string; guest_email: string | null
+        check_in: string; check_out: string; hotel_name: string
       }>(
-        `SELECT ob.id, ob.hotel_id, ob.booking_id, ob.total_amount, h.slug
+        `SELECT ob.id, ob.hotel_id, ob.booking_id, ob.total_amount, h.slug,
+                ob.guest_name, ob.guest_email, ob.check_in, ob.check_out, h.name AS hotel_name
            FROM online_bookings ob
            JOIN hotels h ON h.id = ob.hotel_id
           WHERE ob.yookassa_payment_id = $1
@@ -50,6 +54,18 @@ const yookassaWebhookRoutes: FastifyPluginAsync = async (fastify) => {
             broadcast(ob.slug, { type: 'booking:updated', booking: bRows[0] })
           }
         }
+        // Send confirmation email to guest
+        if (ob.guest_email) {
+          sendBookingConfirmedEmail({
+            to: ob.guest_email,
+            guestName: ob.guest_name,
+            hotelName: ob.hotel_name,
+            checkIn: ob.check_in,
+            checkOut: ob.check_out,
+            totalAmount: ob.total_amount,
+            bookingConfirmUrl: `https://app.hotelsync.ru/booking-confirm/${ob.id}`,
+          }).catch(() => {}) // don't fail webhook on email error
+        }
       } else if (event === 'payment.canceled') {
         await db.query(
           `UPDATE online_bookings SET status = 'cancelled', yookassa_status = 'canceled' WHERE id = $1`,