invoice: move validation to separate layer, validate GTU/SP codes
Change-Id: I0af85b054356eaae81b528e5e64bf74c10bd3ae4
diff --git a/bgpwtf/invoice/validation.go b/bgpwtf/invoice/validation.go
new file mode 100644
index 0000000..d9fd820
--- /dev/null
+++ b/bgpwtf/invoice/validation.go
@@ -0,0 +1,123 @@
+package main
+
+import (
+ "fmt"
+
+ pb "code.hackerspace.pl/hscloud/bgpwtf/invoice/proto"
+)
+
+// validateGTUCodde returns a non-nil error if the given GTU (Grupy Towarów i
+// Usług) code is invalid.
+func validateGTUCode(c pb.GTUCode) error {
+ switch c {
+ case pb.GTUCode_GTU_01:
+ case pb.GTUCode_GTU_02:
+ case pb.GTUCode_GTU_03:
+ case pb.GTUCode_GTU_04:
+ case pb.GTUCode_GTU_05:
+ case pb.GTUCode_GTU_06:
+ case pb.GTUCode_GTU_07:
+ case pb.GTUCode_GTU_09:
+ case pb.GTUCode_GTU_10:
+ case pb.GTUCode_GTU_11:
+ case pb.GTUCode_GTU_12:
+ case pb.GTUCode_GTU_13:
+ default:
+ return fmt.Errorf("must be 1-13, is %d", c)
+ }
+ return nil
+}
+
+// validateGTUCodde returns a non-nil error if the given SP (Symbol Procedury)
+// code is invalid.
+func validateSPCode(c pb.SPCode) error {
+ switch c {
+ case pb.SPCode_SP_SW:
+ case pb.SPCode_SP_EE:
+ case pb.SPCode_SP_TP:
+ case pb.SPCode_SP_TT_WNT:
+ case pb.SPCode_SP_TT_D:
+ case pb.SPCode_SP_MR_T:
+ case pb.SPCode_SP_MR_UZ:
+ case pb.SPCode_SP_I_42:
+ case pb.SPCode_SP_I_63:
+ case pb.SPCode_SP_B_SPV:
+ case pb.SPCode_SP_B_SPV_DOSTAWA:
+ case pb.SPCode_SP_B_MPV_PROWIZJA:
+ case pb.SPCode_SP_MPP:
+ default:
+ return fmt.Errorf("unsupported value")
+ }
+ return nil
+}
+
+// validateItem returns a non-nil error if the given Item is invalid as part of
+// an InvoiceData when an invoice is being created.
+func validateItem(i *pb.Item) error {
+ if i.Title == "" {
+ return fmt.Errorf("must have title set")
+ }
+ if i.Count == 0 || i.Count > 1000000 {
+ return fmt.Errorf("must have correct count")
+ }
+ if i.UnitPrice == 0 {
+ return fmt.Errorf("must have correct unit price")
+ }
+ if i.Vat > 100000 {
+ return fmt.Errorf("must have correct vat set")
+ }
+ for i, code := range i.GtuCode {
+ if err := validateGTUCode(code); err != nil {
+ return fmt.Errorf("GTU code %d: %v", i, err)
+ }
+ }
+ return nil
+}
+
+// validateContactPoint returns a non-nil error if the given ContactPoint is
+// invalid as part of an InvoiceData when an invoice is being created.
+func validateContactPoint(cp *pb.ContactPoint) error {
+ if cp.Medium == "" {
+ return fmt.Errorf("must have medium set")
+ }
+ if cp.Contact == "" {
+ return fmt.Errorf("must have contact set")
+ }
+ return nil
+}
+
+// validateInvoiceData returns a non-nil error if the given InvoiceData cannot
+// be used to createa new invoice.
+func validateInvoiceData(id *pb.InvoiceData) error {
+ if id == nil {
+ return fmt.Errorf("must be given")
+ }
+ if len(id.Item) < 1 {
+ return fmt.Errorf("must contain at least one item")
+ }
+ for i, item := range id.Item {
+ if err := validateItem(item); err != nil {
+ return fmt.Errorf("invoice data item %d: %v", i, err)
+ }
+ }
+ if len(id.CustomerBilling) < 1 {
+ return fmt.Errorf("must contain at least one line of the customer's billing address")
+ }
+ if len(id.InvoicerBilling) < 1 {
+ return fmt.Errorf("must contain at least one line of the invoicer's billing address")
+ }
+ for i, c := range id.InvoicerContact {
+ if err := validateContactPoint(c); err != nil {
+ return fmt.Errorf("contact point %d: %v", i, err)
+ }
+ }
+ if id.InvoicerVatId == "" {
+ return fmt.Errorf("must contain invoicer's vat id")
+ }
+ for i, code := range id.SpCode {
+ if err := validateSPCode(code); err != nil {
+ return fmt.Errorf("SP code %d: %v", i, err)
+ }
+ }
+ return nil
+}