internal/processor/order_processor.go

@@ -316,6 +316,18 @@ func resolveLineQuantity(product *entities.Product, quantity int, weight *float6
 }
 
 func (p *OrderProcessorImpl) CreateOrder(ctx context.Context, req *models.CreateOrderRequest, organizationID uuid.UUID) (*models.OrderResponse, error) {
+	// The order's customer earns EnakPoint and EnakCoin once it is paid, so it must be
+	// one of the organization's own; orders.customer_id has no foreign key to catch it.
+	customerID := req.CustomerID
+	if customerID != nil && *customerID == uuid.Nil {
+		customerID = nil
+	}
+	if customerID != nil {
+		if _, err := p.customerRepo.GetByIDAndOrganization(ctx, *customerID, organizationID); err != nil {
+			return nil, fmt.Errorf("customer not found or does not belong to the organization: %w", err)
+		}
+	}
+
 	orderNumber, err := p.orderRepo.GetNextOrderNumber(ctx, organizationID, req.OutletID)
 	if err != nil {
 		return nil, fmt.Errorf("failed to generate order number: %w", err)
@@ -401,7 +413,7 @@ func (p *OrderProcessorImpl) CreateOrder(ctx context.Context, req *models.Create
 		OrganizationID:  organizationID,
 		OutletID:        req.OutletID,
 		UserID:          req.UserID,
-		CustomerID:      req.CustomerID,
+		CustomerID:      customerID,
 		OrderNumber:     orderNumber,
 		TableNumber:     req.TableNumber,
 		OrderType:       entities.OrderType(req.OrderType),

internal/transformer/order_transformer.go

@@ -27,6 +27,7 @@ func CreateOrderContractToModel(req *contract.CreateOrderRequest) *models.Create
 	return &models.CreateOrderRequest{
 		OutletID:     req.OutletID,
 		UserID:       req.UserID,
+		CustomerID:   req.CustomerID,
 		TableID:      req.TableID,
 		TableNumber:  req.TableNumber,
 		OrderType:    constants.OrderType(req.OrderType),

internal/transformer/order_transformer_test.go

@@ -32,6 +32,20 @@ func TestCreateOrderContractToModelCarriesWeight(t *testing.T) {
 	require.Equal(t, weight, *result.OrderItems[0].Weight)
 }
 
+func TestCreateOrderContractToModelCarriesCustomer(t *testing.T) {
+	customerID := uuid.New()
+
+	result := CreateOrderContractToModel(&contract.CreateOrderRequest{
+		OutletID:   uuid.New(),
+		UserID:     uuid.New(),
+		CustomerID: &customerID,
+		OrderItems: []contract.CreateOrderItemRequest{{ProductID: uuid.New(), Quantity: 1}},
+	})
+
+	require.NotNil(t, result.CustomerID, "the order's customer is who earns EnakPoint and EnakCoin")
+	require.Equal(t, customerID, *result.CustomerID)
+}
+
 func TestAddToOrderContractToModelCarriesWeight(t *testing.T) {
 	weight := 0.8
 

migrations/000094_add_point_payment_method.down.sql

@@ -13,4 +13,4 @@ DROP INDEX IF EXISTS uq_payment_methods_point_per_organization;
 
 ALTER TABLE payment_methods DROP CONSTRAINT IF EXISTS payment_methods_type_check;
 ALTER TABLE payment_methods ADD CONSTRAINT payment_methods_type_check
-    CHECK (type IN ('cash', 'card', 'digital_wallet'));
+    CHECK (type IN ('cash', 'card', 'digital_wallet', 'qr', 'edc', 'delivery'));

migrations/000094_add_point_payment_method.up.sql

@@ -1,10 +1,11 @@
 -- Paying with EnakPoint (docs/prd-point-coin.md F9, §8, §10.5).
 
--- A new payment method type. Every organization has exactly one method of it, made by
+-- A new payment method type, next to the existing ones (edc and delivery were added to
+-- the constraint outside the migrations). Every organization has exactly one method of it, made by
 -- the system, which cannot be deleted or change type.
 ALTER TABLE payment_methods DROP CONSTRAINT IF EXISTS payment_methods_type_check;
 ALTER TABLE payment_methods ADD CONSTRAINT payment_methods_type_check
-    CHECK (type IN ('cash', 'card', 'digital_wallet', 'point'));
+    CHECK (type IN ('cash', 'card', 'digital_wallet', 'qr', 'edc', 'delivery', 'point'));
 
 CREATE UNIQUE INDEX uq_payment_methods_point_per_organization ON payment_methods(organization_id)
     WHERE type = 'point';

migrations/000098_allow_edc_delivery_payment_methods.down.sql

@@ -0,0 +1,2 @@
+-- Nothing to undo: 000094 now allows the same types.
+SELECT 1;

migrations/000098_allow_edc_delivery_payment_methods.up.sql

@@ -0,0 +1,7 @@
+-- Production also has edc and delivery payment methods, allowed by a constraint changed
+-- outside the migrations, and the code also accepts qr, which no constraint allowed.
+-- 000094 first rewrote the constraint without them, which
+-- failed on production and, where it ran, dropped them. Keep every type in use.
+ALTER TABLE payment_methods DROP CONSTRAINT IF EXISTS payment_methods_type_check;
+ALTER TABLE payment_methods ADD CONSTRAINT payment_methods_type_check
+    CHECK (type IN ('cash', 'card', 'digital_wallet', 'qr', 'edc', 'delivery', 'point'));