Add endpoint to fetch pubkey & Require wallet already unlocked when starting the service (#43)

* Add endpoint to fetch pubkey & simplify ports.Wallet

* Lint

asp/api-spec/openapi/swagger/ark/v1/service.swagger.json

@@ -203,6 +203,28 @@
         ]
       }
     },
+    "/v1/pubkey": {
+      "get": {
+        "operationId": "ArkService_GetPubkey",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/v1GetPubkeyResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "tags": [
+          "ArkService"
+        ]
+      }
+    },
     "/v1/round/{txid}": {
       "get": {
         "operationId": "ArkService_GetRound",
@@ -343,6 +365,14 @@
         }
       }
     },
+    "v1GetPubkeyResponse": {
+      "type": "object",
+      "properties": {
+        "pubkey": {
+          "type": "string"
+        }
+      }
+    },
     "v1GetRoundResponse": {
       "type": "object",
       "properties": {

asp/api-spec/protobuf/ark/v1/service.proto

@@ -48,6 +48,11 @@ service ArkService {
       get: "/v1/vtxos/{address}"
     };
   }
+  rpc GetPubkey(GetPubkeyRequest) returns (GetPubkeyResponse) {
+    option (google.api.http) = {
+      get: "/v1/pubkey"
+    };
+  }
 }
 
 message RegisterPaymentRequest {
@@ -150,3 +155,8 @@ message Vtxo {
   bool spent = 3;
 }
 
+message GetPubkeyRequest {}
+
+message GetPubkeyResponse {
+  string pubkey = 1;
+}

asp/api-spec/protobuf/gen/ark/v1/service.pb.go

@@ -1220,6 +1220,91 @@ func (x *Vtxo) GetSpent() bool {
 	return false
 }
 
+type GetPubkeyRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *GetPubkeyRequest) Reset() {
+	*x = GetPubkeyRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ark_v1_service_proto_msgTypes[23]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetPubkeyRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetPubkeyRequest) ProtoMessage() {}
+
+func (x *GetPubkeyRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_ark_v1_service_proto_msgTypes[23]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetPubkeyRequest.ProtoReflect.Descriptor instead.
+func (*GetPubkeyRequest) Descriptor() ([]byte, []int) {
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{23}
+}
+
+type GetPubkeyResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Pubkey string `protobuf:"bytes,1,opt,name=pubkey,proto3" json:"pubkey,omitempty"`
+}
+
+func (x *GetPubkeyResponse) Reset() {
+	*x = GetPubkeyResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ark_v1_service_proto_msgTypes[24]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetPubkeyResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetPubkeyResponse) ProtoMessage() {}
+
+func (x *GetPubkeyResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_ark_v1_service_proto_msgTypes[24]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetPubkeyResponse.ProtoReflect.Descriptor instead.
+func (*GetPubkeyResponse) Descriptor() ([]byte, []int) {
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{24}
+}
+
+func (x *GetPubkeyResponse) GetPubkey() string {
+	if x != nil {
+		return x.Pubkey
+	}
+	return ""
+}
+
 var File_ark_v1_service_proto protoreflect.FileDescriptor
 
 var file_ark_v1_service_proto_rawDesc = []byte{
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+	0x76, 0x69, 0x63, 0x65, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x3d, 0x67, 0x69, 0x74,
-	0x6b, 0x76, 0x31, 0xa2, 0x02, 0x03, 0x41, 0x58, 0x58, 0xaa, 0x02, 0x06, 0x41, 0x72, 0x6b, 0x2e,
+	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x61, 0x72, 0x6b, 0x2d, 0x6e, 0x65, 0x74, 0x77,
-	0x56, 0x31, 0xca, 0x02, 0x06, 0x41, 0x72, 0x6b, 0x5c, 0x56, 0x31, 0xe2, 0x02, 0x12, 0x41, 0x72,
+	0x6f, 0x72, 0x6b, 0x2f, 0x61, 0x72, 0x6b, 0x2f, 0x61, 0x70, 0x69, 0x2d, 0x73, 0x70, 0x65, 0x63,
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+	0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x67, 0x65, 0x6e, 0x2f, 0x61, 0x72,
-	0xea, 0x02, 0x07, 0x41, 0x72, 0x6b, 0x3a, 0x3a, 0x56, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6b, 0x2f, 0x76, 0x31, 0x3b, 0x61, 0x72, 0x6b, 0x76, 0x31, 0xa2, 0x02, 0x03, 0x41, 0x58, 0x58,
-	0x6f, 0x33,
+	0xaa, 0x02, 0x06, 0x41, 0x72, 0x6b, 0x2e, 0x56, 0x31, 0xca, 0x02, 0x06, 0x41, 0x72, 0x6b, 0x5c,
+	0x56, 0x31, 0xe2, 0x02, 0x12, 0x41, 0x72, 0x6b, 0x5c, 0x56, 0x31, 0x5c, 0x47, 0x50, 0x42, 0x4d,
+	0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0xea, 0x02, 0x07, 0x41, 0x72, 0x6b, 0x3a, 0x3a, 0x56,
+	0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1405,7 +1499,7 @@ func file_ark_v1_service_proto_rawDescGZIP() []byte {
 	return file_ark_v1_service_proto_rawDescData
 }
 
-var file_ark_v1_service_proto_msgTypes = make([]protoimpl.MessageInfo, 24)
+var file_ark_v1_service_proto_msgTypes = make([]protoimpl.MessageInfo, 26)
 var file_ark_v1_service_proto_goTypes = []interface{}{
 	(*RegisterPaymentRequest)(nil),  // 0: ark.v1.RegisterPaymentRequest
 	(*RegisterPaymentResponse)(nil), // 1: ark.v1.RegisterPaymentResponse
@@ -1430,13 +1524,15 @@ var file_ark_v1_service_proto_goTypes = []interface{}{
 	(*ListVtxosRequest)(nil),        // 20: ark.v1.ListVtxosRequest
 	(*ListVtxosResponse)(nil),       // 21: ark.v1.ListVtxosResponse
 	(*Vtxo)(nil),                    // 22: ark.v1.Vtxo
-	nil,                             // 23: ark.v1.RoundFinalizationEvent.ForfeitTxsEntry
+	(*GetPubkeyRequest)(nil),        // 23: ark.v1.GetPubkeyRequest
+	(*GetPubkeyResponse)(nil),       // 24: ark.v1.GetPubkeyResponse
+	nil,                             // 25: ark.v1.RoundFinalizationEvent.ForfeitTxsEntry
 }
 var file_ark_v1_service_proto_depIdxs = []int32{
 	9,  // 0: ark.v1.RegisterPaymentRequest.inputs:type_name -> ark.v1.Input
 	10, // 1: ark.v1.ClaimPaymentRequest.outputs:type_name -> ark.v1.Output
 	8,  // 2: ark.v1.GetRoundResponse.round:type_name -> ark.v1.Round
-	23, // 3: ark.v1.RoundFinalizationEvent.forfeit_txs:type_name -> ark.v1.RoundFinalizationEvent.ForfeitTxsEntry
+	25, // 3: ark.v1.RoundFinalizationEvent.forfeit_txs:type_name -> ark.v1.RoundFinalizationEvent.ForfeitTxsEntry
 	11, // 4: ark.v1.GetEventStreamResponse.round_finalization:type_name -> ark.v1.RoundFinalizationEvent
 	12, // 5: ark.v1.GetEventStreamResponse.round_finalized:type_name -> ark.v1.RoundFinalizedEvent
 	13, // 6: ark.v1.GetEventStreamResponse.round_failed:type_name -> ark.v1.RoundFailed
@@ -1451,16 +1547,18 @@ var file_ark_v1_service_proto_depIdxs = []int32{
 	16, // 15: ark.v1.ArkService.Ping:input_type -> ark.v1.PingRequest
 	18, // 16: ark.v1.ArkService.Faucet:input_type -> ark.v1.FaucetRequest
 	20, // 17: ark.v1.ArkService.ListVtxos:input_type -> ark.v1.ListVtxosRequest
-	1,  // 18: ark.v1.ArkService.RegisterPayment:output_type -> ark.v1.RegisterPaymentResponse
+	23, // 18: ark.v1.ArkService.GetPubkey:input_type -> ark.v1.GetPubkeyRequest
-	3,  // 19: ark.v1.ArkService.ClaimPayment:output_type -> ark.v1.ClaimPaymentResponse
+	1,  // 19: ark.v1.ArkService.RegisterPayment:output_type -> ark.v1.RegisterPaymentResponse
-	5,  // 20: ark.v1.ArkService.FinalizePayment:output_type -> ark.v1.FinalizePaymentResponse
+	3,  // 20: ark.v1.ArkService.ClaimPayment:output_type -> ark.v1.ClaimPaymentResponse
-	7,  // 21: ark.v1.ArkService.GetRound:output_type -> ark.v1.GetRoundResponse
+	5,  // 21: ark.v1.ArkService.FinalizePayment:output_type -> ark.v1.FinalizePaymentResponse
-	15, // 22: ark.v1.ArkService.GetEventStream:output_type -> ark.v1.GetEventStreamResponse
+	7,  // 22: ark.v1.ArkService.GetRound:output_type -> ark.v1.GetRoundResponse
-	17, // 23: ark.v1.ArkService.Ping:output_type -> ark.v1.PingResponse
+	15, // 23: ark.v1.ArkService.GetEventStream:output_type -> ark.v1.GetEventStreamResponse
-	19, // 24: ark.v1.ArkService.Faucet:output_type -> ark.v1.FaucetResponse
+	17, // 24: ark.v1.ArkService.Ping:output_type -> ark.v1.PingResponse
-	21, // 25: ark.v1.ArkService.ListVtxos:output_type -> ark.v1.ListVtxosResponse
+	19, // 25: ark.v1.ArkService.Faucet:output_type -> ark.v1.FaucetResponse
-	18, // [18:26] is the sub-list for method output_type
+	21, // 26: ark.v1.ArkService.ListVtxos:output_type -> ark.v1.ListVtxosResponse
-	10, // [10:18] is the sub-list for method input_type
+	24, // 27: ark.v1.ArkService.GetPubkey:output_type -> ark.v1.GetPubkeyResponse
+	19, // [19:28] is the sub-list for method output_type
+	10, // [10:19] is the sub-list for method input_type
 	10, // [10:10] is the sub-list for extension type_name
 	10, // [10:10] is the sub-list for extension extendee
 	0,  // [0:10] is the sub-list for field type_name
@@ -1748,6 +1846,30 @@ func file_ark_v1_service_proto_init() {
 				return nil
 			}
 		}
+		file_ark_v1_service_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetPubkeyRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_ark_v1_service_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetPubkeyResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_ark_v1_service_proto_msgTypes[15].OneofWrappers = []interface{}{
 		(*GetEventStreamResponse_RoundFinalization)(nil),
@@ -1760,7 +1882,7 @@ func file_ark_v1_service_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_ark_v1_service_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   24,
+			NumMessages:   26,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

asp/api-spec/protobuf/gen/ark/v1/service.pb.gw.go

@@ -358,6 +358,24 @@ func local_request_ArkService_ListVtxos_0(ctx context.Context, marshaler runtime
 
 }
 
+func request_ArkService_GetPubkey_0(ctx context.Context, marshaler runtime.Marshaler, client ArkServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq GetPubkeyRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := client.GetPubkey(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_ArkService_GetPubkey_0(ctx context.Context, marshaler runtime.Marshaler, server ArkServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq GetPubkeyRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := server.GetPubkey(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 // RegisterArkServiceHandlerServer registers the http handlers for service ArkService to "mux".
 // UnaryRPC     :call ArkServiceServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
@@ -532,6 +550,29 @@ func RegisterArkServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux,
 
 	})
 
+	mux.Handle("GET", pattern_ArkService_GetPubkey_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/ark.v1.ArkService/GetPubkey", runtime.WithHTTPPathPattern("/v1/pubkey"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_ArkService_GetPubkey_0(rctx, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_ArkService_GetPubkey_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -733,6 +774,26 @@ func RegisterArkServiceHandlerClient(ctx context.Context, mux *runtime.ServeMux,
 
 	})
 
+	mux.Handle("GET", pattern_ArkService_GetPubkey_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req, "/ark.v1.ArkService/GetPubkey", runtime.WithHTTPPathPattern("/v1/pubkey"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_ArkService_GetPubkey_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_ArkService_GetPubkey_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -752,6 +813,8 @@ var (
 	pattern_ArkService_Faucet_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2}, []string{"v1", "faucet", "address"}, ""))
 
 	pattern_ArkService_ListVtxos_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2}, []string{"v1", "vtxos", "address"}, ""))
+
+	pattern_ArkService_GetPubkey_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1", "pubkey"}, ""))
 )
 
 var (
@@ -770,4 +833,6 @@ var (
 	forward_ArkService_Faucet_0 = runtime.ForwardResponseMessage
 
 	forward_ArkService_ListVtxos_0 = runtime.ForwardResponseMessage
+
+	forward_ArkService_GetPubkey_0 = runtime.ForwardResponseMessage
 )

asp/api-spec/protobuf/gen/ark/v1/service_grpc.pb.go

@@ -26,6 +26,7 @@ type ArkServiceClient interface {
 	Ping(ctx context.Context, in *PingRequest, opts ...grpc.CallOption) (*PingResponse, error)
 	Faucet(ctx context.Context, in *FaucetRequest, opts ...grpc.CallOption) (*FaucetResponse, error)
 	ListVtxos(ctx context.Context, in *ListVtxosRequest, opts ...grpc.CallOption) (*ListVtxosResponse, error)
+	GetPubkey(ctx context.Context, in *GetPubkeyRequest, opts ...grpc.CallOption) (*GetPubkeyResponse, error)
 }
 
 type arkServiceClient struct {
@@ -131,6 +132,15 @@ func (c *arkServiceClient) ListVtxos(ctx context.Context, in *ListVtxosRequest,
 	return out, nil
 }
 
+func (c *arkServiceClient) GetPubkey(ctx context.Context, in *GetPubkeyRequest, opts ...grpc.CallOption) (*GetPubkeyResponse, error) {
+	out := new(GetPubkeyResponse)
+	err := c.cc.Invoke(ctx, "/ark.v1.ArkService/GetPubkey", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // ArkServiceServer is the server API for ArkService service.
 // All implementations should embed UnimplementedArkServiceServer
 // for forward compatibility
@@ -143,6 +153,7 @@ type ArkServiceServer interface {
 	Ping(context.Context, *PingRequest) (*PingResponse, error)
 	Faucet(context.Context, *FaucetRequest) (*FaucetResponse, error)
 	ListVtxos(context.Context, *ListVtxosRequest) (*ListVtxosResponse, error)
+	GetPubkey(context.Context, *GetPubkeyRequest) (*GetPubkeyResponse, error)
 }
 
 // UnimplementedArkServiceServer should be embedded to have forward compatible implementations.
@@ -173,6 +184,9 @@ func (UnimplementedArkServiceServer) Faucet(context.Context, *FaucetRequest) (*F
 func (UnimplementedArkServiceServer) ListVtxos(context.Context, *ListVtxosRequest) (*ListVtxosResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListVtxos not implemented")
 }
+func (UnimplementedArkServiceServer) GetPubkey(context.Context, *GetPubkeyRequest) (*GetPubkeyResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetPubkey not implemented")
+}
 
 // UnsafeArkServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to ArkServiceServer will
@@ -332,6 +346,24 @@ func _ArkService_ListVtxos_Handler(srv interface{}, ctx context.Context, dec fun
 	return interceptor(ctx, in, info, handler)
 }
 
+func _ArkService_GetPubkey_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetPubkeyRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ArkServiceServer).GetPubkey(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/ark.v1.ArkService/GetPubkey",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ArkServiceServer).GetPubkey(ctx, req.(*GetPubkeyRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // ArkService_ServiceDesc is the grpc.ServiceDesc for ArkService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -367,6 +399,10 @@ var ArkService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "ListVtxos",
 			Handler:    _ArkService_ListVtxos_Handler,
 		},
+		{
+			MethodName: "GetPubkey",
+			Handler:    _ArkService_GetPubkey_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{

asp/internal/core/application/service.go

@@ -37,12 +37,14 @@ type Service interface {
 	GetEventsChannel(ctx context.Context) <-chan domain.RoundEvent
 	UpdatePaymentStatus(ctx context.Context, id string) error
 	ListVtxos(ctx context.Context, pubkey string) ([]domain.Vtxo, error)
+	GetPubkey(ctx context.Context) (string, error)
 }
 
 type service struct {
 	roundInterval int64
 	network       common.Network
 	onchainNework network.Network
+	pubkey        string
 
 	wallet          ports.WalletService
 	scheduler       ports.SchedulerService
@@ -59,12 +61,14 @@ func NewService(
 	walletSvc ports.WalletService, schedulerSvc ports.SchedulerService,
 	repoManager ports.RepoManager, builder ports.TxBuilder,
 ) Service {
+	pubkey := ""
+	eventsCh := make(chan domain.RoundEvent)
 	paymentRequests := newPaymentsMap(nil)
 	forfeitTxs := newForfeitTxsMap()
 	svc := &service{
-		interval, network, onchainNetwork,
+		interval, network, onchainNetwork, pubkey,
 		walletSvc, schedulerSvc, repoManager, builder, paymentRequests, forfeitTxs,
-		make(chan domain.RoundEvent),
+		eventsCh,
 	}
 	repoManager.RegisterEventsHandler(
 		func(round *domain.Round) {
@@ -171,6 +175,21 @@ func (s *service) GetRoundByTxid(ctx context.Context, poolTxid string) (*domain.
 	return s.repoManager.Rounds().GetRoundWithTxid(ctx, poolTxid)
 }
 
+func (s *service) GetPubkey(ctx context.Context) (string, error) {
+	if s.pubkey == "" {
+		pubkey, err := s.wallet.GetPubkey(ctx)
+		if err != nil {
+			return "", err
+		}
+		serializedPubkey, err := common.EncodePubKey(s.network.PubKey, pubkey)
+		if err != nil {
+			return "", err
+		}
+		s.pubkey = serializedPubkey
+	}
+	return s.pubkey, nil
+}
+
 func (s *service) start() error {
 	startImmediately := true
 	finalizationInterval := int64(s.roundInterval / 2)
@@ -283,7 +302,7 @@ func (s *service) finalizeRound() {
 		return
 	}
 
-	txid, err := s.wallet.Transaction().BroadcastTransaction(ctx, round.TxHex)
+	txid, err := s.wallet.BroadcastTransaction(ctx, round.TxHex)
 	if err != nil {
 		round.Fail(fmt.Errorf("failed to broadcast pool tx: %s", err))
 		log.WithError(err).Warn("failed to broadcast pool tx")

asp/internal/core/ports/wallet.go

@@ -1,35 +1,15 @@
 package ports
 
-import "context"
+import (
+	"context"
+
+	"github.com/decred/dcrd/dcrec/secp256k1/v4"
+)
 
 type WalletService interface {
-	Wallet() Wallet
-	Account() Account
-	Transaction() Transaction
-	Notification() Notification
-	Close()
-}
-
-type Wallet interface {
-	GenSeed(ctx context.Context) ([]string, error)
-	InitWallet(ctx context.Context, mnemonic []string, password string) error
-	Unlock(ctx context.Context, password string) error
-	Lock(ctx context.Context, password string) error
 	Status(ctx context.Context) (WalletStatus, error)
-}
+	GetPubkey(ctx context.Context) (*secp256k1.PublicKey, error)
-
-type Account interface {
 	DeriveAddresses(ctx context.Context, num int) ([]string, error)
-	GetBalance(ctx context.Context) (map[string]Balance, error)
-	ListUtxos(ctx context.Context) ([]Utxo, []Utxo, error)
-}
-
-type Transaction interface {
-	GetTransaction(ctx context.Context, txid string) (string, error)
-	UpdatePset(
-		ctx context.Context, pset string,
-		ins []TxInput, outs []TxOutput,
-	) (string, error)
 	SignPset(
 		ctx context.Context, pset string, extractRawTx bool,
 	) (string, error)
@@ -37,71 +17,15 @@ type Transaction interface {
 	BroadcastTransaction(ctx context.Context, txHex string) (string, error)
 }
 
-type Notification interface {
-	GetTxNotifications() chan WalletTxNotification
-	GetUtxoNotifications() chan WalletUtxoNotification
-}
-
 type WalletStatus interface {
 	IsInitialized() bool
 	IsUnlocked() bool
 	IsSynced() bool
 }
 
-type WalletTxNotification interface {
+type TxInput interface {
-	GetEventType() WalletTxEventType
-	GetAccountNames() []string
-	GetTxHex() string
-	GetBlockDetails() BlockInfo
-}
-
-type WalletUtxoNotification interface {
-	GetEventType() WalletUtxoEventType
-	GetUtxos() []Utxo
-}
-
-type WalletTxEventType interface {
-	IsUnconfirmed() bool
-	IsConfirmed() bool
-	IsBroadcasted() bool
-}
-
-type WalletUtxoEventType interface {
-	IsUnconfirmed() bool
-	IsConfirmed() bool
-	IsLocked() bool
-	IsUnlocked() bool
-	IsSpent() bool
-}
-
-type Balance interface {
-	GetConfirmedBalance() uint64
-	GetUnconfirmedBalance() uint64
-	GetLockedBalance() uint64
-	GetTotalBalance() uint64
-}
-
-type UtxoKey interface {
 	GetTxid() string
 	GetIndex() uint32
-}
-
-type UtxoStatus interface {
-	GetTxid() string
-	GetBlockInfo() BlockInfo
-}
-
-type Utxo interface {
-	UtxoKey
-	GetAsset() string
-	GetValue() uint64
-	GetScript() string
-	GetConfirmedStatus() UtxoStatus
-	GetSpentStatus() UtxoStatus
-}
-
-type TxInput interface {
-	UtxoKey
 	GetScript() string
 	GetScriptSigSize() int
 	GetWitnessSize() int
@@ -111,9 +35,3 @@ type TxOutput interface {
 	GetAmount() uint64
 	GetScript() string
 }
-
-type BlockInfo interface {
-	GetHash() string
-	GetHeight() uint64
-	GetTimestamp() int64
-}

asp/internal/infrastructure/ocean-wallet/account.go

@@ -4,23 +4,13 @@ import (
 	"context"
 
 	pb "github.com/ark-network/ark/api-spec/protobuf/gen/ocean/v1"
-	"github.com/ark-network/ark/internal/core/ports"
 	"github.com/vulpemventures/go-elements/address"
-	"google.golang.org/grpc"
 )
 
-type account struct {
+func (s *service) DeriveAddresses(
-	client pb.AccountServiceClient
-}
-
-func newAccount(conn *grpc.ClientConn) *account {
-	return &account{pb.NewAccountServiceClient(conn)}
-}
-
-func (m *account) DeriveAddresses(
 	ctx context.Context, numOfAddresses int,
 ) ([]string, error) {
-	res, err := m.client.DeriveAddresses(ctx, &pb.DeriveAddressesRequest{
+	res, err := s.accountClient.DeriveAddresses(ctx, &pb.DeriveAddressesRequest{
 		AccountName:    accountLabel,
 		NumOfAddresses: uint64(numOfAddresses),
 	})
@@ -36,47 +26,3 @@ func (m *account) DeriveAddresses(
 	}
 	return addresses, nil
 }
-
-func (m *account) GetBalance(
-	ctx context.Context,
-) (map[string]ports.Balance, error) {
-	res, err := m.client.Balance(ctx, &pb.BalanceRequest{
-		AccountName: accountLabel,
-	})
-	if err != nil {
-		return nil, err
-	}
-	balance := make(map[string]ports.Balance)
-	for asset, bal := range res.GetBalance() {
-		balance[asset] = bal
-	}
-	return balance, nil
-}
-
-func (m *account) ListUtxos(
-	ctx context.Context,
-) (spendableUtxos, lockedUtxos []ports.Utxo, err error) {
-	res, err := m.client.ListUtxos(ctx, &pb.ListUtxosRequest{
-		AccountName: accountLabel,
-	})
-	if err != nil {
-		return nil, nil, err
-	}
-	if res.GetSpendableUtxos() != nil {
-		spendableUtxos = utxoList(res.GetSpendableUtxos().GetUtxos()).toPortableList()
-	}
-	if res.GetLockedUtxos() != nil {
-		lockedUtxos = utxoList(res.GetLockedUtxos().GetUtxos()).toPortableList()
-	}
-	return
-}
-
-type utxoList []*pb.Utxo
-
-func (l utxoList) toPortableList() []ports.Utxo {
-	utxos := make([]ports.Utxo, 0, len(l))
-	for _, u := range l {
-		utxos = append(utxos, utxoInfo{u})
-	}
-	return utxos
-}

asp/internal/infrastructure/ocean-wallet/notify.go

@@ -1,195 +0,0 @@
-package oceanwallet
-
-import (
-	"context"
-	"fmt"
-	"io"
-
-	pb "github.com/ark-network/ark/api-spec/protobuf/gen/ocean/v1"
-	"github.com/ark-network/ark/internal/core/ports"
-	log "github.com/sirupsen/logrus"
-	"google.golang.org/grpc"
-)
-
-type notify struct {
-	client              pb.NotificationServiceClient
-	chTxNotifications   chan ports.WalletTxNotification
-	chUtxoNotifications chan ports.WalletUtxoNotification
-}
-
-func newNotify(conn *grpc.ClientConn) (*notify, error) {
-	svc := &notify{
-		client:              pb.NewNotificationServiceClient(conn),
-		chTxNotifications:   make(chan ports.WalletTxNotification),
-		chUtxoNotifications: make(chan ports.WalletUtxoNotification),
-	}
-
-	txStream, err := svc.client.TransactionNotifications(
-		context.Background(), &pb.TransactionNotificationsRequest{},
-	)
-	if err != nil {
-		return nil, fmt.Errorf(
-			"failed to open stream for tx notifications: %s", err,
-		)
-	}
-	go svc.startListeningForTxNotifications(txStream)
-
-	utxoStream, err := svc.client.UtxosNotifications(
-		context.Background(), &pb.UtxosNotificationsRequest{},
-	)
-	if err != nil {
-		return nil, fmt.Errorf(
-			"failed to open stream for utxo notifications: %s", err,
-		)
-	}
-	go svc.startListeningForUtxoNotifications(utxoStream)
-
-	return svc, nil
-}
-
-func (m *notify) GetTxNotifications() chan ports.WalletTxNotification {
-	return m.chTxNotifications
-}
-
-func (m *notify) GetUtxoNotifications() chan ports.WalletUtxoNotification {
-	return m.chUtxoNotifications
-}
-
-func (m *notify) startListeningForTxNotifications(
-	stream pb.NotificationService_TransactionNotificationsClient,
-) {
-	var err error
-	defer func() {
-		if err != nil {
-			log.WithError(err).Fatal(
-				"notification handler: error while listenting to tx notifications",
-			)
-		}
-	}()
-
-	for {
-		var notification *pb.TransactionNotificationsResponse
-		notification, err = stream.Recv()
-		if err != nil {
-			if err == io.EOF {
-				break
-			}
-			return
-		}
-
-		select {
-		case m.chTxNotifications <- txNotifyInfo{notification}:
-			continue
-		default:
-		}
-	}
-}
-
-func (m *notify) startListeningForUtxoNotifications(
-	stream pb.NotificationService_UtxosNotificationsClient,
-) {
-	var err error
-	defer func() {
-		if err != nil {
-			log.WithError(err).Fatal(
-				"notification handler: error while listenting to utxo notifications",
-			)
-		}
-	}()
-
-	for {
-		var notification *pb.UtxosNotificationsResponse
-		notification, err = stream.Recv()
-		if err != nil {
-			if err == io.EOF {
-				break
-			}
-			return
-		}
-
-		select {
-		case m.chUtxoNotifications <- utxoNotifyInfo{notification}:
-			continue
-		default:
-		}
-	}
-}
-
-type txNotifyInfo struct {
-	*pb.TransactionNotificationsResponse
-}
-
-func (i txNotifyInfo) GetEventType() ports.WalletTxEventType {
-	return txEventType(i.TransactionNotificationsResponse.GetEventType())
-}
-func (i txNotifyInfo) GetTxHex() string {
-	return i.TransactionNotificationsResponse.GetTxhex()
-}
-func (i txNotifyInfo) GetBlockDetails() ports.BlockInfo {
-	return i.TransactionNotificationsResponse.GetBlockDetails()
-}
-
-type txEventType pb.TxEventType
-
-func (t txEventType) IsUnconfirmed() bool {
-	return int(t) == int(pb.TxEventType_TX_EVENT_TYPE_UNCONFIRMED)
-}
-func (t txEventType) IsConfirmed() bool {
-	return int(t) == int(pb.TxEventType_TX_EVENT_TYPE_CONFIRMED)
-}
-func (t txEventType) IsBroadcasted() bool {
-	return int(t) == int(pb.TxEventType_TX_EVENT_TYPE_BROADCASTED)
-}
-
-type utxoNotifyInfo struct {
-	*pb.UtxosNotificationsResponse
-}
-
-func (i utxoNotifyInfo) GetEventType() ports.WalletUtxoEventType {
-	return utxoEventType(i.UtxosNotificationsResponse.GetEventType())
-}
-func (i utxoNotifyInfo) GetUtxos() []ports.Utxo {
-	utxos := make([]ports.Utxo, 0, len(i.UtxosNotificationsResponse.GetUtxos()))
-	for _, u := range i.UtxosNotificationsResponse.GetUtxos() {
-		utxos = append(utxos, utxoInfo{u})
-	}
-	return utxos
-}
-
-type utxoEventType pb.UtxoEventType
-
-func (t utxoEventType) IsUnconfirmed() bool {
-	return int(t) == int(pb.UtxoEventType_UTXO_EVENT_TYPE_NEW)
-}
-func (t utxoEventType) IsSpent() bool {
-	return int(t) == int(pb.UtxoEventType_UTXO_EVENT_TYPE_SPENT)
-}
-func (t utxoEventType) IsConfirmed() bool {
-	return int(t) == int(pb.UtxoEventType_UTXO_EVENT_TYPE_CONFIRMED)
-}
-func (t utxoEventType) IsLocked() bool {
-	return int(t) == int(pb.UtxoEventType_UTXO_EVENT_TYPE_LOCKED)
-}
-func (t utxoEventType) IsUnlocked() bool {
-	return int(t) == int(pb.UtxoEventType_UTXO_EVENT_TYPE_UNLOCKED)
-}
-
-type utxoInfo struct {
-	*pb.Utxo
-}
-
-func (i utxoInfo) GetConfirmedStatus() ports.UtxoStatus {
-	return utxoStatusInfo{i.Utxo.GetConfirmedStatus()}
-}
-
-func (i utxoInfo) GetSpentStatus() ports.UtxoStatus {
-	return utxoStatusInfo{i.Utxo.GetSpentStatus()}
-}
-
-type utxoStatusInfo struct {
-	*pb.UtxoStatus
-}
-
-func (i utxoStatusInfo) GetBlockInfo() ports.BlockInfo {
-	return i.UtxoStatus.GetBlockInfo()
-}

asp/internal/infrastructure/ocean-wallet/service.go

@@ -2,20 +2,20 @@ package oceanwallet
 
 import (
 	"context"
+	"fmt"
 
+	pb "github.com/ark-network/ark/api-spec/protobuf/gen/ocean/v1"
 	"github.com/ark-network/ark/internal/core/ports"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 )
 
 type service struct {
-	addr string
+	addr          string
-	conn *grpc.ClientConn
+	conn          *grpc.ClientConn
-
+	walletClient  pb.WalletServiceClient
-	wallet  *wallet
+	accountClient pb.AccountServiceClient
-	account *account
+	txClient      pb.TransactionServiceClient
-	tx      *tx
-	notify  *notify
 }
 
 func NewService(addr string) (ports.WalletService, error) {
@@ -23,37 +23,27 @@ func NewService(addr string) (ports.WalletService, error) {
 	if err != nil {
 		return nil, err
 	}
+	walletClient := pb.NewWalletServiceClient(conn)
+	accountClient := pb.NewAccountServiceClient(conn)
+	txClient := pb.NewTransactionServiceClient(conn)
 	svc := &service{
-		addr:    addr,
+		addr:          addr,
-		conn:    conn,
+		conn:          conn,
-		wallet:  newWallet(conn),
+		walletClient:  walletClient,
-		account: newAccount(conn),
+		accountClient: accountClient,
-		tx:      newTx(conn),
+		txClient:      txClient,
 	}
-	if _, err := svc.Wallet().Status(context.Background()); err != nil {
+	status, err := svc.Status(context.Background())
+	if err != nil {
 		return nil, err
 	}
-	svc.notify, _ = newNotify(conn)
+	if !(status.IsInitialized() && status.IsUnlocked()) {
+		return nil, fmt.Errorf("wallet must be already initialized and unlocked")
+	}
 
 	return svc, nil
 }
 
-func (s *service) Wallet() ports.Wallet {
-	return s.wallet
-}
-
-func (s *service) Account() ports.Account {
-	return s.account
-}
-
-func (s *service) Transaction() ports.Transaction {
-	return s.tx
-}
-
-func (s *service) Notification() ports.Notification {
-	return s.notify
-}
-
 func (s *service) Close() {
 	s.conn.Close()
 }

asp/internal/infrastructure/ocean-wallet/transaction.go

@@ -7,50 +7,14 @@ import (
 	pb "github.com/ark-network/ark/api-spec/protobuf/gen/ocean/v1"
 	"github.com/ark-network/ark/internal/core/ports"
 	"github.com/vulpemventures/go-elements/psetv2"
-	"google.golang.org/grpc"
 )
 
 const msatsPerByte = 110
 
-type tx struct {
+func (s *service) SignPset(
-	client pb.TransactionServiceClient
-}
-
-func newTx(conn *grpc.ClientConn) *tx {
-	return &tx{pb.NewTransactionServiceClient(conn)}
-}
-
-func (m *tx) GetTransaction(
-	ctx context.Context, txid string,
-) (string, error) {
-	res, err := m.client.GetTransaction(ctx, &pb.GetTransactionRequest{
-		Txid: txid,
-	})
-	if err != nil {
-		return "", err
-	}
-	return res.GetTxHex(), nil
-}
-
-func (m *tx) UpdatePset(
-	ctx context.Context, pset string,
-	ins []ports.TxInput, outs []ports.TxOutput,
-) (string, error) {
-	res, err := m.client.UpdatePset(ctx, &pb.UpdatePsetRequest{
-		Pset:    pset,
-		Inputs:  inputList(ins).toProto(),
-		Outputs: outputList(outs).toProto(),
-	})
-	if err != nil {
-		return "", err
-	}
-	return res.GetPset(), nil
-}
-
-func (m *tx) SignPset(
 	ctx context.Context, pset string, extractRawTx bool,
 ) (string, error) {
-	res, err := m.client.SignPset(ctx, &pb.SignPsetRequest{
+	res, err := s.txClient.SignPset(ctx, &pb.SignPsetRequest{
 		Pset: pset,
 	})
 	if err != nil {
@@ -68,10 +32,10 @@ func (m *tx) SignPset(
 	return ptx.ToBase64()
 }
 
-func (m *tx) Transfer(
+func (s *service) Transfer(
 	ctx context.Context, outs []ports.TxOutput,
 ) (string, error) {
-	res, err := m.client.Transfer(ctx, &pb.TransferRequest{
+	res, err := s.txClient.Transfer(ctx, &pb.TransferRequest{
 		AccountName:      accountLabel,
 		Receivers:        outputList(outs).toProto(),
 		MillisatsPerByte: msatsPerByte,
@@ -82,10 +46,10 @@ func (m *tx) Transfer(
 	return res.GetTxHex(), nil
 }
 
-func (m *tx) BroadcastTransaction(
+func (s *service) BroadcastTransaction(
 	ctx context.Context, txHex string,
 ) (string, error) {
-	res, err := m.client.BroadcastTransaction(
+	res, err := s.txClient.BroadcastTransaction(
 		ctx, &pb.BroadcastTransactionRequest{
 			TxHex: txHex,
 		},
@@ -96,22 +60,6 @@ func (m *tx) BroadcastTransaction(
 	return res.GetTxid(), nil
 }
 
-type inputList []ports.TxInput
-
-func (l inputList) toProto() []*pb.Input {
-	list := make([]*pb.Input, 0, len(l))
-	for _, in := range l {
-		list = append(list, &pb.Input{
-			Txid:          in.GetTxid(),
-			Index:         in.GetIndex(),
-			Script:        in.GetScript(),
-			ScriptsigSize: uint64(in.GetScriptSigSize()),
-			WitnessSize:   uint64(in.GetWitnessSize()),
-		})
-	}
-	return list
-}
-
 type outputList []ports.TxOutput
 
 func (l outputList) toProto() []*pb.Output {

asp/internal/infrastructure/ocean-wallet/wallet.go

@@ -2,80 +2,42 @@ package oceanwallet
 
 import (
 	"context"
-	"strings"
+	"fmt"
 
 	pb "github.com/ark-network/ark/api-spec/protobuf/gen/ocean/v1"
 	"github.com/ark-network/ark/internal/core/ports"
-	"google.golang.org/grpc"
+	"github.com/btcsuite/btcd/btcutil/hdkeychain"
+	"github.com/decred/dcrd/dcrec/secp256k1/v4"
 )
 
 const accountLabel = "ark"
 
-type wallet struct {
+func (s *service) GetPubkey(ctx context.Context) (*secp256k1.PublicKey, error) {
-	client        pb.WalletServiceClient
+	res, err := s.walletClient.GetInfo(ctx, &pb.GetInfoRequest{})
-	accountClient pb.AccountServiceClient
-}
-
-func newWallet(conn *grpc.ClientConn) *wallet {
-	return &wallet{
-		pb.NewWalletServiceClient(conn),
-		pb.NewAccountServiceClient(conn),
-	}
-}
-
-func (m *wallet) GenSeed(ctx context.Context) ([]string, error) {
-	res, err := m.client.GenSeed(ctx, &pb.GenSeedRequest{})
 	if err != nil {
 		return nil, err
 	}
-	mnemonic := strings.Split(res.GetMnemonic(), " ")
+	if len(res.GetAccounts()) <= 0 {
-
+		return nil, fmt.Errorf("wallet is locked")
-	return mnemonic, nil
-}
-
-func (m *wallet) InitWallet(
-	ctx context.Context, mnemonic []string, password string,
-) error {
-	_, err := m.client.CreateWallet(ctx, &pb.CreateWalletRequest{
-		Mnemonic: strings.Join(mnemonic, " "),
-		Password: password,
-	})
-	return err
-}
-
-func (m *wallet) Unlock(ctx context.Context, password string) error {
-	if _, err := m.client.Unlock(ctx, &pb.UnlockRequest{
-		Password: password,
-	}); err != nil {
-		return err
 	}
-	// Let's always make sure the 'ark' account is created after unlocking.
+	xpub := res.GetAccounts()[0].GetXpubs()[0]
-	info, err := m.client.GetInfo(ctx, &pb.GetInfoRequest{})
+	node, err := hdkeychain.NewKeyFromString(xpub)
 	if err != nil {
-		return err
+		return nil, err
 	}
-	if len(info.GetAccounts()) <= 0 {
+	for i := 0; i < 2; i++ {
-		_, err := m.accountClient.CreateAccountBIP44(
+		node, err = node.Derive(0)
-			ctx, &pb.CreateAccountBIP44Request{
+		if err != nil {
-				Label: accountLabel,
+			return nil, err
-			},
+		}
-		)
-		return err
 	}
-	return nil
+	return node.ECPubKey()
 }
 
-func (m *wallet) Lock(ctx context.Context, password string) error {
+func (s *service) Status(
-	_, err := m.client.Lock(ctx, &pb.LockRequest{
-		Password: password,
-	})
-	return err
-}
-
-func (m *wallet) Status(
 	ctx context.Context,
 ) (ports.WalletStatus, error) {
-	res, err := m.client.Status(ctx, &pb.StatusRequest{})
+	res, err := s.walletClient.Status(ctx, &pb.StatusRequest{})
 	if err != nil {
 		return nil, err
 	}

asp/internal/infrastructure/tx-builder/dummy/builder.go

@@ -133,7 +133,7 @@ func (b *txBuilder) BuildPoolTx(wallet ports.WalletService, payments []domain.Pa
 
 	ctx := context.Background()
 
-	return wallet.Transaction().Transfer(ctx, []ports.TxOutput{
+	return wallet.Transfer(ctx, []ports.TxOutput{
 		newOutput(aspScript, sharedOutputAmount),
 		newOutput(aspScript, connectorOutputAmount),
 	})

asp/internal/interface/grpc/handlers/arkservice.go

@@ -176,6 +176,17 @@ func (h *handler) ListVtxos(ctx context.Context, req *arkv1.ListVtxosRequest) (*
 	}, nil
 }
 
+func (h *handler) GetPubkey(ctx context.Context, req *arkv1.GetPubkeyRequest) (*arkv1.GetPubkeyResponse, error) {
+	pubkey, err := h.svc.GetPubkey(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	return &arkv1.GetPubkeyResponse{
+		Pubkey: pubkey,
+	}, nil
+}
+
 func (h *handler) pushListener(l *listener) {
 	h.listenersLock.Lock()
 	defer h.listenersLock.Unlock()