feat: add email confirmation and QR generation

backend/bookings/services.py

@@ -7,7 +7,9 @@ from django.utils import timezone
 
 from shows.models import Performance
 
+from .emailing import send_confirmation_email
 from .models import Reservation, ReservationToken
+from .qr import build_check_in_preview_url, generate_check_in_qr_base64
 
 
 CONFIRMATION_TOKEN_TTL = timedelta(hours=48)
@@ -53,6 +55,8 @@ class ConfirmedReservationResult:
     check_in_token: ReservationToken
     raw_check_in_token: str
     available_seats: int
+    qr_code_image: str
+    qr_code_url: str
 
 
 def calculate_available_seats(performance):
@@ -98,12 +102,17 @@ def create_pending_reservation(
             expires_at=confirmation_expires_at,
         )
 
-    return PendingReservationResult(
+    result = PendingReservationResult(
         reservation=reservation,
         confirmation_token=confirmation_token,
         raw_confirmation_token=raw_confirmation_token,
         available_seats=available_seats,
     )
+    send_confirmation_email(
+        reservation=result.reservation,
+        raw_confirmation_token=result.raw_confirmation_token,
+    )
+    return result
 
 
 def generate_confirmation_token(reservation, *, expires_at=None):
@@ -173,6 +182,11 @@ def confirm_reservation_from_token(raw_token):
         check_in_token=check_in_token,
         raw_check_in_token=raw_check_in_token,
         available_seats=available_seats - reservation.party_size,
+        qr_code_image=generate_check_in_qr_base64(
+            reservation=reservation,
+            raw_check_in_token=raw_check_in_token,
+        ),
+        qr_code_url=build_check_in_preview_url(raw_check_in_token),
     )