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Made-with: Cursor

bookings/services.py

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+from typing import List
+import uuid
+
+from django.utils import timezone
+
+from bookings.models import Booking, Ticket
+
+
+def _generate_ticket_id(booking: Booking) -> str:
+    """
+    Generate a ticket_id based on the event name and a random UUID segment.
+
+    Pattern: <EVT><RANDOM_HEX>
+    - EVT: first 3 characters of event name (uppercase), or 'EVT' fallback
+    - RANDOM_HEX: first 10 chars of uuid4 hex (uppercase)
+    """
+    event = getattr(booking.ticket_meta, "event", None)
+    if event and getattr(event, "name", None):
+        prefix = (event.name or "EVT")[:3].upper()
+    else:
+        prefix = "EVT"
+
+    return prefix + uuid.uuid4().hex[:10].upper()
+
+
+def generate_tickets_for_booking(booking: Booking) -> List[Ticket]:
+    """
+    Generate Ticket instances for a given Booking based on its quantity.
+
+    This function does NOT perform any payment or business-rule validation.
+    It simply creates one Ticket per quantity on the booking.
+
+    Args:
+        booking: Booking instance for which tickets should be generated.
+
+    Returns:
+        List[Ticket]: List of created Ticket instances.
+    """
+    if not isinstance(booking, Booking):
+        raise TypeError("booking must be a Booking instance")
+
+    if booking.quantity <= 0:
+        return []
+
+    tickets: List[Ticket] = []
+    for _ in range(booking.quantity):
+        tickets.append(
+            Ticket(
+                booking=booking,
+                ticket_id=_generate_ticket_id(booking),
+                is_checked_in=False,
+                checked_in_date_time=None,
+            )
+        )
+
+    # Bulk create for efficiency
+    Ticket.objects.bulk_create(tickets)
+
+    # Refresh from DB to ensure we have primary keys and any defaults
+    return list[Ticket](Ticket.objects.filter(booking=booking).order_by("id"))
+