Add permits to Refund

1. Adds "permits" M:M relationship to Refund
2. Make Order a 1:M field instead of 1:1

Permits should be added to refund as appropriate, e.g. a single permit
when ending a permit, or all order permits in other cases.

Refs: PV-684

parking_permits/admin.py

@@ -164,6 +164,13 @@ class RefundAdmin(admin.ModelAdmin):
     )
     list_select_related = ("order",)
     ordering = ("-created_at",)
+    raw_id_fields = (
+        "accepted_by",
+        "created_by",
+        "modified_by",
+        "order",
+        "permits",
+    )
 
 
 @admin.register(Product)

parking_permits/admin_resolvers.py

@@ -804,6 +804,7 @@ def resolve_update_resident_permit(
                 iban=iban,
                 description=f"Refund for updating permit: {permit.id}",
             )
+            refund.permits.add(permit)
             logger.info(f"Refund for lowered permit price created: {refund}")
             ParkingPermitEventFactory.make_create_refund_event(
                 permit, refund, created_by=request.user
@@ -939,6 +940,7 @@ def resolve_end_permit(
                 iban=iban,
                 description=description,
             )
+            refund.permits.add(permit)
             send_refund_email(RefundEmailType.CREATED, permit.customer, refund)
             ParkingPermitEventFactory.make_create_refund_event(
                 permit, refund, created_by=request.user

parking_permits/customer_permit.py

@@ -390,6 +390,7 @@ def end(
                     iban=iban,
                     description=f"Refund for ending permits {','.join([str(permit.id) for permit in permits])}",
                 )
+                refund.permits.set(permits)
                 send_refund_email(RefundEmailType.CREATED, self.customer, refund)
 
                 for permit in permits:

parking_permits/migrations/0042_add_permits_and_order_to_refund.py

@@ -0,0 +1,33 @@
+# Generated by Django 4.2.1 on 2023-11-01 13:14
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("parking_permits", "0041_alter_order_type"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="refund",
+            name="permits",
+            field=models.ManyToManyField(
+                blank=True,
+                related_name="refunds",
+                to="parking_permits.parkingpermit",
+                verbose_name="Permits",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="refund",
+            name="order",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.PROTECT,
+                related_name="refunds",
+                to="parking_permits.order",
+                verbose_name="Order",
+            ),
+        ),
+    ]

parking_permits/models/order.py

@@ -604,6 +604,7 @@ def cancel(self, cancel_reason, cancel_from_talpa=True):
                 amount=order_item.product.unit_price,
                 description=f"Refund for ending permit {str(permit.id)}",
             )
+            refund.permits.add(permit)
             send_refund_email(RefundEmailType.CREATED, permit.customer, refund)
             ParkingPermitEventFactory.make_create_refund_event(
                 permit, refund, created_by=permit.customer.user

parking_permits/models/refund.py

@@ -18,11 +18,17 @@ class RefundStatus(models.TextChoices):
 
 class Refund(TimestampedModelMixin, UserStampedModelMixin):
     name = models.CharField(_("Name"), max_length=200, blank=True)
-    order = models.OneToOneField(
+    order = models.ForeignKey(
         "Order",
         verbose_name=_("Order"),
         on_delete=models.PROTECT,
-        related_name="refund",
+        related_name="refunds",
+    )
+    permits = models.ManyToManyField(
+        "ParkingPermit",
+        verbose_name=_("Permits"),
+        related_name="refunds",
+        blank=True,
     )
     amount = models.DecimalField(
         _("Amount"), default=0.00, max_digits=6, decimal_places=2

parking_permits/resolvers.py

@@ -435,6 +435,7 @@ def resolve_update_permit_vehicle(
             iban=iban if iban else "",
             description=f"Refund for updating permits, customer switched vehicle to: {new_vehicle}",
         )
+        refund.permits.add(permit)
         logger.info(f"Refund for updating permits created: {refund}")
         send_refund_email(RefundEmailType.CREATED, customer, refund)
         ParkingPermitEventFactory.make_create_refund_event(
@@ -653,6 +654,7 @@ def resolve_change_address(
                     iban=iban if iban else "",
                     description=f"Refund for updating permits zone (customer switch address to: {address})",
                 )
+                refund.permits.set(order.permits.all())
                 logger.info(f"Refund for updating permits zone created: {refund}")
                 send_refund_email(RefundEmailType.CREATED, customer, refund)
                 for permit in order.permits.all():