feat: API work to expose miscCosts for frontend query (#851)

* Expose some miscCosts info

* Fix failing tests

schema.graphql

@@ -337,6 +337,16 @@ type MiscCostNode implements Node {
   value: Float
 }
 
+type MiscCostNodeConnection {
+  pageInfo: PageInfo!
+  edges: [MiscCostNodeEdge]!
+}
+
+type MiscCostNodeEdge {
+  node: MiscCostNode
+  cursor: String!
+}
+
 type Mutation {
   recordFinancialTransfer(method: TransferMethodEnum!, reason: String, societyId: IdInputField!, value: Int!): RecordFinancialTransfer
   concessionType(input: ConcessionTypeMutationInput!): ConcessionTypeMutationPayload
@@ -666,6 +676,7 @@ input ProductionWarning {
 type Query {
   images: [ImageNode]
   paymentDevices(paymentProvider: PaymentProvider, paired: Boolean): [SquarePaymentDevice]
+  miscCosts(offset: Int, before: String, after: String, first: Int, last: Int, id: ID, name: String): MiscCostNodeConnection
   bookings(offset: Int, before: String, after: String, first: Int, last: Int, createdAt: DateTime, updatedAt: DateTime, status: String, user: ID, creator: ID, reference: String, performance: ID, adminDiscountPercentage: Float, accessibilityInfo: String, expiresAt: DateTime, id: ID, statusIn: [String], search: String, productionSearch: String, productionSlug: String, performanceId: String, checkedIn: Boolean, active: Boolean, expired: Boolean, orderBy: String): BookingNodeConnection
   me: ExtendedUserNode
   societies(offset: Int, before: String, after: String, first: Int, last: Int, id: ID, name: String, slug: String, userHasPermission: String): SocietyNodeConnection

uobtheatre/bookings/models.py

@@ -58,8 +58,10 @@ class MiscCost(models.Model):
     Additional costs are added to a booking's final total.
     For example: Booking fee/Theatre improvement levy.
 
-    A misc costs is defined by either a value or a percentage. If both are
-    supplied the percentage will take precedence.
+    A misc costs is defined by either a value or a percentage, but not both.
+
+    Percentages are in decimal form (e.g. 0.1 for 10%).
+    Value is in pence.
 
     Note:
         Currently all misc costs are applied to all bookings.

uobtheatre/bookings/schema.py

@@ -16,10 +16,27 @@
 from uobtheatre.utils.filters import FilterSet
 
 
+class MiscCostFilter(FilterSet):
+    class Meta:
+        model = MiscCost
+        fields = (
+            "id",
+            "name",
+        )
+
+
 class MiscCostNode(DjangoObjectType):
     class Meta:
         model = MiscCost
         interfaces = (relay.Node,)
+        filterset_class = MiscCostFilter
+        fields = (
+            "id",
+            "name",
+            "description",
+            "percentage",
+            "value",
+        )
 
 
 class TicketNode(DjangoObjectType):
@@ -350,4 +367,5 @@ class Query(graphene.ObjectType):
     These queries are appended to the main schema Query.
     """
 
+    miscCosts = DjangoFilterConnectionField(MiscCostNode)
     bookings = DjangoFilterConnectionField(BookingNode)