Implement RequestToGiveBill message

Author: jeffyanta

go.mod

@@ -6,7 +6,7 @@ require (
 	filippo.io/edwards25519 v1.1.0
 	github.com/aws/aws-sdk-go-v2 v0.17.0
 	github.com/bits-and-blooms/bloom/v3 v3.1.0
-	github.com/code-payments/code-protobuf-api v1.19.1-0.20251002160322-79d89fadd0fe
+	github.com/code-payments/code-protobuf-api v1.19.1-0.20251006190631-c7955e3a049a
 	github.com/code-payments/code-vm-indexer v0.1.11-0.20241028132209-23031e814fba
 	github.com/emirpasic/gods v1.12.0
 	github.com/envoyproxy/protoc-gen-validate v1.2.1

go.sum

@@ -80,8 +80,8 @@ github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnht
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cockroachdb/apd v1.1.0 h1:3LFP3629v+1aKXU5Q37mxmRxX/pIu1nijXydLShEq5I=
 github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
-github.com/code-payments/code-protobuf-api v1.19.1-0.20251002160322-79d89fadd0fe h1:f/jZbdX74ZNSRY9O+KRPNr3Cr3ukserXuImtsVzq+no=
-github.com/code-payments/code-protobuf-api v1.19.1-0.20251002160322-79d89fadd0fe/go.mod h1:fl4xu32MeNpGZR3wFhwEeKO0qVDuxYBNkqnvuADt6cA=
+github.com/code-payments/code-protobuf-api v1.19.1-0.20251006190631-c7955e3a049a h1:es8YUC/il/9wYpNIh/BkckPIaNDonGiiiehUE0q+mA0=
+github.com/code-payments/code-protobuf-api v1.19.1-0.20251006190631-c7955e3a049a/go.mod h1:fl4xu32MeNpGZR3wFhwEeKO0qVDuxYBNkqnvuADt6cA=
 github.com/code-payments/code-vm-indexer v0.1.11-0.20241028132209-23031e814fba h1:Bkp+gmeb6Y2PWXfkSCTMBGWkb2P1BujRDSjWeI+0j5I=
 github.com/code-payments/code-vm-indexer v0.1.11-0.20241028132209-23031e814fba/go.mod h1:jSiifpiBpyBQ8q2R0MGEbkSgWC6sbdRTyDBntmW+j1E=
 github.com/containerd/continuity v0.0.0-20190827140505-75bee3e2ccb6 h1:NmTXa/uVnDyp0TY5MKi197+3HWcnYWfnHGyaFthlnGw=

pkg/code/server/messaging/message_handler.go

@@ -63,3 +63,42 @@ func (h *RequestToGrabBillMessageHandler) Validate(ctx context.Context, rendezvo
 func (h *RequestToGrabBillMessageHandler) OnSuccess(ctx context.Context) error {
 	return nil
 }
+
+// todo: This message type needs tests
+type RequestToGiveBillMessageHandler struct {
+	data code_data.Provider
+}
+
+func NewRequestToGiveBillMessageHandler(data code_data.Provider) MessageHandler {
+	return &RequestToGiveBillMessageHandler{
+		data: data,
+	}
+}
+
+func (h *RequestToGiveBillMessageHandler) Validate(ctx context.Context, rendezvous *common.Account, untypedMessage *messagingpb.Message) error {
+	typedMessage := untypedMessage.GetRequestToGiveBill()
+	if typedMessage == nil {
+		return errors.New("invalid message type")
+	}
+
+	//
+	// Part 1: Mint account must be the Core Mint or a Launchpad Currency
+	//
+
+	mintAccount, err := common.NewAccountFromProto(typedMessage.Mint)
+	if err != nil {
+		return err
+	}
+
+	switch mintAccount.PublicKey().ToBase58() {
+	case common.CoreMintAccount.PublicKey().ToBase58(), "52MNGpgvydSwCtC2H4qeiZXZ1TxEuRVCRGa8LAfk2kSj":
+	default:
+		return newMessageValidationError("mint account must be the core mint or a launcpad currency")
+	}
+
+	return nil
+}
+
+func (h *RequestToGiveBillMessageHandler) OnSuccess(ctx context.Context) error {
+	return nil
+}

pkg/code/server/messaging/server.go

@@ -658,6 +658,10 @@ func (s *server) SendMessage(ctx context.Context, req *messagingpb.SendMessageRe
 		log = log.WithField("message_type", "request_to_grab_bill")
 		messageHandler = NewRequestToGrabBillMessageHandler(s.data)
 
+	case *messagingpb.Message_RequestToGiveBill:
+		log = log.WithField("message_type", "request_to_give_bill")
+		messageHandler = NewRequestToGiveBillMessageHandler(s.data)
+
 	default:
 		return nil, status.Error(codes.InvalidArgument, "message.kind must be set")
 	}