✨ Payment related grpc method

pkg/internal/grpc/payment.go

@@ -0,0 +1,92 @@
+package grpc
+
+import (
+	"context"
+	"git.solsynth.dev/hypernet/wallet/pkg/internal/database"
+	"git.solsynth.dev/hypernet/wallet/pkg/internal/models"
+	"git.solsynth.dev/hypernet/wallet/pkg/proto"
+	"github.com/samber/lo"
+	"github.com/shopspring/decimal"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func (v *Server) GetWallet(ctx context.Context, request *proto.GetWalletRequest) (*proto.GetWalletResponse, error) {
+	var wallet models.Wallet
+	if err := database.C.Where("account_id = ?", request.AccountId).First(&wallet).Error; err != nil {
+		return nil, status.Errorf(codes.NotFound, "wallet not found")
+	}
+
+	return &proto.GetWalletResponse{
+		Wallet: wallet.ToWalletInfo(),
+	}, nil
+}
+
+func (v *Server) GetTransaction(ctx context.Context, request *proto.GetTransactionRequest) (*proto.GetTransactionResponse, error) {
+	var transaction models.Transaction
+	if err := database.C.Where("id = ?", request.Id).First(&transaction).Error; err != nil {
+		return nil, status.Errorf(codes.NotFound, "transaction not found")
+	}
+
+	return &proto.GetTransactionResponse{
+		Transaction: transaction.ToTransactionInfo(),
+	}, nil
+}
+
+func (v *Server) MakeTransaction(ctx context.Context, request *proto.MakeTransactionRequest) (*proto.TransactionInfo, error) {
+	if request.PayerId == nil && request.PayeeId == nil {
+		return nil, status.Errorf(codes.InvalidArgument, "payer and payee cannot be both nil")
+	}
+
+	transaction := models.Transaction{
+		Amount: decimal.NewFromFloat(request.Amount),
+		Remark: request.Remark,
+	}
+	if request.PayerId != nil {
+		transaction.PayerID = lo.ToPtr(uint(*request.PayerId))
+	}
+	if request.PayeeId != nil {
+		transaction.PayeeID = lo.ToPtr(uint(*request.PayeeId))
+	}
+
+	if err := database.C.Create(&transaction).Error; err != nil {
+		return nil, status.Errorf(codes.Internal, err.Error())
+	}
+
+	return transaction.ToTransactionInfo(), nil
+}
+
+func (v *Server) MakeTransactionWithAccount(ctx context.Context, request *proto.MakeTransactionWithAccountRequest) (*proto.TransactionInfo, error) {
+	if request.PayerAccountId == nil && request.PayeeAccountId == nil {
+		return nil, status.Errorf(codes.InvalidArgument, "payer and payee cannot be both nil")
+	}
+
+	transaction := models.Transaction{
+		Amount: decimal.NewFromFloat(request.Amount),
+		Remark: request.Remark,
+	}
+	if request.PayerAccountId != nil {
+		val := uint(*request.PayerAccountId)
+		var wallet models.Wallet
+		if err := database.C.Where("account_id = ?", val).First(&wallet).Error; err != nil {
+			return nil, status.Errorf(codes.NotFound, "payer wallet not found")
+		}
+		transaction.Payer = &wallet
+		transaction.PayerID = &wallet.ID
+	}
+	if request.PayeeAccountId != nil {
+		val := uint(*request.PayeeAccountId)
+		var wallet models.Wallet
+		if err := database.C.Where("account_id = ?", val).First(&wallet).Error; err != nil {
+			return nil, status.Errorf(codes.NotFound, "payee wallet not found")
+		}
+		transaction.Payee = &wallet
+		transaction.PayeeID = &wallet.ID
+	}
+
+	if err := database.C.Create(&transaction).Error; err != nil {
+		return nil, status.Errorf(codes.Internal, err.Error())
+	}
+
+	return transaction.ToTransactionInfo(), nil
+}

pkg/internal/models/transaction.go

@@ -2,6 +2,8 @@ package models
 
 import (
 	"git.solsynth.dev/hypernet/nexus/pkg/nex/cruda"
+	"git.solsynth.dev/hypernet/wallet/pkg/proto"
+	"github.com/samber/lo"
 	"github.com/shopspring/decimal"
 )
 
@@ -15,3 +17,19 @@ type Transaction struct {
 	PayerID *uint           `json:"payer_id"` // Leave this field as nil means pay from the system
 	PayeeID *uint           `json:"payee_id"` // Leave this field as nil means pay to the system
 }
+
+func (v *Transaction) ToTransactionInfo() *proto.TransactionInfo {
+	amount, _ := v.Amount.Float64()
+	info := &proto.TransactionInfo{
+		Id:     uint64(v.ID),
+		Amount: amount,
+		Remark: v.Remark,
+	}
+	if v.PayerID != nil {
+		info.PayerId = lo.ToPtr(uint64(*v.PayerID))
+	}
+	if v.PayeeID != nil {
+		info.PayeeId = lo.ToPtr(uint64(*v.PayeeID))
+	}
+	return info
+}

pkg/internal/models/wallet.go

@@ -2,6 +2,7 @@ package models
 
 import (
 	"git.solsynth.dev/hypernet/nexus/pkg/nex/cruda"
+	"git.solsynth.dev/hypernet/wallet/pkg/proto"
 	"github.com/shopspring/decimal"
 )
 
@@ -10,5 +11,15 @@ type Wallet struct {
 
 	Transactions []Transaction   `json:"transactions"`
 	Balance      decimal.Decimal `json:"amount" sql:"type:decimal(30,2);"`
+	Password     string          `json:"password"`
 	AccountID    uint            `json:"account_id"`
 }
+
+func (v *Wallet) ToWalletInfo() *proto.WalletInfo {
+	balance, _ := v.Balance.Float64()
+	return &proto.WalletInfo{
+		Id:        uint64(v.ID),
+		Balance:   balance,
+		AccountId: uint64(v.AccountID),
+	}
+}

pkg/internal/server/api/wallet_api.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"errors"
+	"git.solsynth.dev/hypernet/wallet/pkg/internal/server/exts"
 
 	"git.solsynth.dev/hypernet/nexus/pkg/nex/sec"
 	"git.solsynth.dev/hypernet/wallet/pkg/internal/database"
@@ -17,6 +18,14 @@ func createWallet(c *fiber.Ctx) error {
 	}
 	user := c.Locals("user").(*sec.UserInfo)
 
+	var data struct {
+		Password string `json:"password" validate:"min=4"`
+	}
+
+	if err := exts.BindAndValidate(c, &data); err != nil {
+		return err
+	}
+
 	var wallet models.Wallet
 	if err := database.C.Where("account_id = ?", user.ID).
 		First(&wallet).Error; err == nil || errors.Is(err, gorm.ErrRecordNotFound) {

pkg/proto/payment.pb.go

@@ -0,0 +1,683 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.3
+// source: payment.proto
+
+package proto
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type WalletInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id        uint64  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Balance   float64 `protobuf:"fixed64,2,opt,name=balance,proto3" json:"balance,omitempty"`
+	AccountId uint64  `protobuf:"varint,3,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+}
+
+func (x *WalletInfo) Reset() {
+	*x = WalletInfo{}
+	mi := &file_payment_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *WalletInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*WalletInfo) ProtoMessage() {}
+
+func (x *WalletInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use WalletInfo.ProtoReflect.Descriptor instead.
+func (*WalletInfo) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *WalletInfo) GetId() uint64 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+func (x *WalletInfo) GetBalance() float64 {
+	if x != nil {
+		return x.Balance
+	}
+	return 0
+}
+
+func (x *WalletInfo) GetAccountId() uint64 {
+	if x != nil {
+		return x.AccountId
+	}
+	return 0
+}
+
+type TransactionInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id      uint64  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	PayerId *uint64 `protobuf:"varint,2,opt,name=payer_id,json=payerId,proto3,oneof" json:"payer_id,omitempty"`
+	PayeeId *uint64 `protobuf:"varint,3,opt,name=payee_id,json=payeeId,proto3,oneof" json:"payee_id,omitempty"`
+	Amount  float64 `protobuf:"fixed64,4,opt,name=amount,proto3" json:"amount,omitempty"`
+	Remark  string  `protobuf:"bytes,5,opt,name=remark,proto3" json:"remark,omitempty"`
+}
+
+func (x *TransactionInfo) Reset() {
+	*x = TransactionInfo{}
+	mi := &file_payment_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *TransactionInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TransactionInfo) ProtoMessage() {}
+
+func (x *TransactionInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TransactionInfo.ProtoReflect.Descriptor instead.
+func (*TransactionInfo) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *TransactionInfo) GetId() uint64 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+func (x *TransactionInfo) GetPayerId() uint64 {
+	if x != nil && x.PayerId != nil {
+		return *x.PayerId
+	}
+	return 0
+}
+
+func (x *TransactionInfo) GetPayeeId() uint64 {
+	if x != nil && x.PayeeId != nil {
+		return *x.PayeeId
+	}
+	return 0
+}
+
+func (x *TransactionInfo) GetAmount() float64 {
+	if x != nil {
+		return x.Amount
+	}
+	return 0
+}
+
+func (x *TransactionInfo) GetRemark() string {
+	if x != nil {
+		return x.Remark
+	}
+	return ""
+}
+
+type GetWalletRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	AccountId uint64 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+}
+
+func (x *GetWalletRequest) Reset() {
+	*x = GetWalletRequest{}
+	mi := &file_payment_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *GetWalletRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetWalletRequest) ProtoMessage() {}
+
+func (x *GetWalletRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[2]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetWalletRequest.ProtoReflect.Descriptor instead.
+func (*GetWalletRequest) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *GetWalletRequest) GetAccountId() uint64 {
+	if x != nil {
+		return x.AccountId
+	}
+	return 0
+}
+
+type GetWalletResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Wallet *WalletInfo `protobuf:"bytes,1,opt,name=wallet,proto3" json:"wallet,omitempty"`
+}
+
+func (x *GetWalletResponse) Reset() {
+	*x = GetWalletResponse{}
+	mi := &file_payment_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *GetWalletResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetWalletResponse) ProtoMessage() {}
+
+func (x *GetWalletResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[3]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetWalletResponse.ProtoReflect.Descriptor instead.
+func (*GetWalletResponse) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *GetWalletResponse) GetWallet() *WalletInfo {
+	if x != nil {
+		return x.Wallet
+	}
+	return nil
+}
+
+type GetTransactionRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+}
+
+func (x *GetTransactionRequest) Reset() {
+	*x = GetTransactionRequest{}
+	mi := &file_payment_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *GetTransactionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetTransactionRequest) ProtoMessage() {}
+
+func (x *GetTransactionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[4]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetTransactionRequest.ProtoReflect.Descriptor instead.
+func (*GetTransactionRequest) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *GetTransactionRequest) GetId() uint64 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+type GetTransactionResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Transaction *TransactionInfo `protobuf:"bytes,1,opt,name=transaction,proto3" json:"transaction,omitempty"`
+}
+
+func (x *GetTransactionResponse) Reset() {
+	*x = GetTransactionResponse{}
+	mi := &file_payment_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *GetTransactionResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetTransactionResponse) ProtoMessage() {}
+
+func (x *GetTransactionResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[5]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetTransactionResponse.ProtoReflect.Descriptor instead.
+func (*GetTransactionResponse) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *GetTransactionResponse) GetTransaction() *TransactionInfo {
+	if x != nil {
+		return x.Transaction
+	}
+	return nil
+}
+
+type MakeTransactionRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PayerId *uint64 `protobuf:"varint,1,opt,name=payer_id,json=payerId,proto3,oneof" json:"payer_id,omitempty"`
+	PayeeId *uint64 `protobuf:"varint,2,opt,name=payee_id,json=payeeId,proto3,oneof" json:"payee_id,omitempty"`
+	Amount  float64 `protobuf:"fixed64,3,opt,name=amount,proto3" json:"amount,omitempty"`
+	Remark  string  `protobuf:"bytes,4,opt,name=remark,proto3" json:"remark,omitempty"`
+}
+
+func (x *MakeTransactionRequest) Reset() {
+	*x = MakeTransactionRequest{}
+	mi := &file_payment_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *MakeTransactionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MakeTransactionRequest) ProtoMessage() {}
+
+func (x *MakeTransactionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[6]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MakeTransactionRequest.ProtoReflect.Descriptor instead.
+func (*MakeTransactionRequest) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *MakeTransactionRequest) GetPayerId() uint64 {
+	if x != nil && x.PayerId != nil {
+		return *x.PayerId
+	}
+	return 0
+}
+
+func (x *MakeTransactionRequest) GetPayeeId() uint64 {
+	if x != nil && x.PayeeId != nil {
+		return *x.PayeeId
+	}
+	return 0
+}
+
+func (x *MakeTransactionRequest) GetAmount() float64 {
+	if x != nil {
+		return x.Amount
+	}
+	return 0
+}
+
+func (x *MakeTransactionRequest) GetRemark() string {
+	if x != nil {
+		return x.Remark
+	}
+	return ""
+}
+
+type MakeTransactionResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Transaction *TransactionInfo `protobuf:"bytes,1,opt,name=transaction,proto3" json:"transaction,omitempty"`
+}
+
+func (x *MakeTransactionResponse) Reset() {
+	*x = MakeTransactionResponse{}
+	mi := &file_payment_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *MakeTransactionResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MakeTransactionResponse) ProtoMessage() {}
+
+func (x *MakeTransactionResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[7]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MakeTransactionResponse.ProtoReflect.Descriptor instead.
+func (*MakeTransactionResponse) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *MakeTransactionResponse) GetTransaction() *TransactionInfo {
+	if x != nil {
+		return x.Transaction
+	}
+	return nil
+}
+
+type MakeTransactionWithAccountRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PayerAccountId *uint64 `protobuf:"varint,1,opt,name=payer_account_id,json=payerAccountId,proto3,oneof" json:"payer_account_id,omitempty"`
+	PayeeAccountId *uint64 `protobuf:"varint,2,opt,name=payee_account_id,json=payeeAccountId,proto3,oneof" json:"payee_account_id,omitempty"`
+	Amount         float64 `protobuf:"fixed64,3,opt,name=amount,proto3" json:"amount,omitempty"`
+	Remark         string  `protobuf:"bytes,4,opt,name=remark,proto3" json:"remark,omitempty"`
+}
+
+func (x *MakeTransactionWithAccountRequest) Reset() {
+	*x = MakeTransactionWithAccountRequest{}
+	mi := &file_payment_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *MakeTransactionWithAccountRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MakeTransactionWithAccountRequest) ProtoMessage() {}
+
+func (x *MakeTransactionWithAccountRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_payment_proto_msgTypes[8]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MakeTransactionWithAccountRequest.ProtoReflect.Descriptor instead.
+func (*MakeTransactionWithAccountRequest) Descriptor() ([]byte, []int) {
+	return file_payment_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *MakeTransactionWithAccountRequest) GetPayerAccountId() uint64 {
+	if x != nil && x.PayerAccountId != nil {
+		return *x.PayerAccountId
+	}
+	return 0
+}
+
+func (x *MakeTransactionWithAccountRequest) GetPayeeAccountId() uint64 {
+	if x != nil && x.PayeeAccountId != nil {
+		return *x.PayeeAccountId
+	}
+	return 0
+}
+
+func (x *MakeTransactionWithAccountRequest) GetAmount() float64 {
+	if x != nil {
+		return x.Amount
+	}
+	return 0
+}
+
+func (x *MakeTransactionWithAccountRequest) GetRemark() string {
+	if x != nil {
+		return x.Remark
+	}
+	return ""
+}
+
+var File_payment_proto protoreflect.FileDescriptor
+
+var file_payment_proto_rawDesc = []byte{
+	0x0a, 0x0d, 0x70, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
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+}
+
+var (
+	file_payment_proto_rawDescOnce sync.Once
+	file_payment_proto_rawDescData = file_payment_proto_rawDesc
+)
+
+func file_payment_proto_rawDescGZIP() []byte {
+	file_payment_proto_rawDescOnce.Do(func() {
+		file_payment_proto_rawDescData = protoimpl.X.CompressGZIP(file_payment_proto_rawDescData)
+	})
+	return file_payment_proto_rawDescData
+}
+
+var file_payment_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_payment_proto_goTypes = []any{
+	(*WalletInfo)(nil),                        // 0: proto.WalletInfo
+	(*TransactionInfo)(nil),                   // 1: proto.TransactionInfo
+	(*GetWalletRequest)(nil),                  // 2: proto.GetWalletRequest
+	(*GetWalletResponse)(nil),                 // 3: proto.GetWalletResponse
+	(*GetTransactionRequest)(nil),             // 4: proto.GetTransactionRequest
+	(*GetTransactionResponse)(nil),            // 5: proto.GetTransactionResponse
+	(*MakeTransactionRequest)(nil),            // 6: proto.MakeTransactionRequest
+	(*MakeTransactionResponse)(nil),           // 7: proto.MakeTransactionResponse
+	(*MakeTransactionWithAccountRequest)(nil), // 8: proto.MakeTransactionWithAccountRequest
+}
+var file_payment_proto_depIdxs = []int32{
+	0, // 0: proto.GetWalletResponse.wallet:type_name -> proto.WalletInfo
+	1, // 1: proto.GetTransactionResponse.transaction:type_name -> proto.TransactionInfo
+	1, // 2: proto.MakeTransactionResponse.transaction:type_name -> proto.TransactionInfo
+	2, // 3: proto.PaymentService.GetWallet:input_type -> proto.GetWalletRequest
+	4, // 4: proto.PaymentService.GetTransaction:input_type -> proto.GetTransactionRequest
+	6, // 5: proto.PaymentService.MakeTransaction:input_type -> proto.MakeTransactionRequest
+	8, // 6: proto.PaymentService.MakeTransactionWithAccount:input_type -> proto.MakeTransactionWithAccountRequest
+	3, // 7: proto.PaymentService.GetWallet:output_type -> proto.GetWalletResponse
+	5, // 8: proto.PaymentService.GetTransaction:output_type -> proto.GetTransactionResponse
+	1, // 9: proto.PaymentService.MakeTransaction:output_type -> proto.TransactionInfo
+	1, // 10: proto.PaymentService.MakeTransactionWithAccount:output_type -> proto.TransactionInfo
+	7, // [7:11] is the sub-list for method output_type
+	3, // [3:7] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
+}
+
+func init() { file_payment_proto_init() }
+func file_payment_proto_init() {
+	if File_payment_proto != nil {
+		return
+	}
+	file_payment_proto_msgTypes[1].OneofWrappers = []any{}
+	file_payment_proto_msgTypes[6].OneofWrappers = []any{}
+	file_payment_proto_msgTypes[8].OneofWrappers = []any{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_payment_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   9,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_payment_proto_goTypes,
+		DependencyIndexes: file_payment_proto_depIdxs,
+		MessageInfos:      file_payment_proto_msgTypes,
+	}.Build()
+	File_payment_proto = out.File
+	file_payment_proto_rawDesc = nil
+	file_payment_proto_goTypes = nil
+	file_payment_proto_depIdxs = nil
+}

pkg/proto/payment.proto

@@ -0,0 +1,60 @@
+syntax = "proto3";
+
+option go_package = ".;proto";
+
+package proto;
+
+service PaymentService {
+  rpc GetWallet(GetWalletRequest) returns (GetWalletResponse) {}
+  rpc GetTransaction(GetTransactionRequest) returns (GetTransactionResponse) {}
+  rpc MakeTransaction(MakeTransactionRequest) returns (TransactionInfo) {}
+  rpc MakeTransactionWithAccount(MakeTransactionWithAccountRequest) returns (TransactionInfo) {}
+}
+
+message WalletInfo {
+  uint64 id = 1;
+  double balance = 2;
+  uint64 account_id = 3;
+}
+
+message TransactionInfo {
+  uint64 id = 1;
+  optional uint64 payer_id = 2;
+  optional uint64 payee_id = 3;
+  double amount = 4;
+  string remark = 5;
+}
+
+message GetWalletRequest {
+  uint64 account_id = 1;
+}
+
+message GetWalletResponse {
+  WalletInfo wallet = 1;
+}
+
+message GetTransactionRequest {
+  uint64 id = 1;
+}
+
+message GetTransactionResponse {
+  TransactionInfo transaction = 1;
+}
+
+message MakeTransactionRequest {
+  optional uint64 payer_id = 1;
+  optional uint64 payee_id = 2;
+  double amount = 3;
+  string remark = 4;
+}
+
+message MakeTransactionResponse {
+  TransactionInfo transaction = 1;
+}
+
+message MakeTransactionWithAccountRequest {
+  optional uint64 payer_account_id = 1;
+  optional uint64 payee_account_id = 2;
+  double amount = 3;
+  string remark = 4;
+}

pkg/proto/payment_grpc.pb.go

@@ -0,0 +1,235 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.28.3
+// source: payment.proto
+
+package proto
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	PaymentService_GetWallet_FullMethodName                  = "/proto.PaymentService/GetWallet"
+	PaymentService_GetTransaction_FullMethodName             = "/proto.PaymentService/GetTransaction"
+	PaymentService_MakeTransaction_FullMethodName            = "/proto.PaymentService/MakeTransaction"
+	PaymentService_MakeTransactionWithAccount_FullMethodName = "/proto.PaymentService/MakeTransactionWithAccount"
+)
+
+// PaymentServiceClient is the client API for PaymentService service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type PaymentServiceClient interface {
+	GetWallet(ctx context.Context, in *GetWalletRequest, opts ...grpc.CallOption) (*GetWalletResponse, error)
+	GetTransaction(ctx context.Context, in *GetTransactionRequest, opts ...grpc.CallOption) (*GetTransactionResponse, error)
+	MakeTransaction(ctx context.Context, in *MakeTransactionRequest, opts ...grpc.CallOption) (*TransactionInfo, error)
+	MakeTransactionWithAccount(ctx context.Context, in *MakeTransactionWithAccountRequest, opts ...grpc.CallOption) (*TransactionInfo, error)
+}
+
+type paymentServiceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewPaymentServiceClient(cc grpc.ClientConnInterface) PaymentServiceClient {
+	return &paymentServiceClient{cc}
+}
+
+func (c *paymentServiceClient) GetWallet(ctx context.Context, in *GetWalletRequest, opts ...grpc.CallOption) (*GetWalletResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetWalletResponse)
+	err := c.cc.Invoke(ctx, PaymentService_GetWallet_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *paymentServiceClient) GetTransaction(ctx context.Context, in *GetTransactionRequest, opts ...grpc.CallOption) (*GetTransactionResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetTransactionResponse)
+	err := c.cc.Invoke(ctx, PaymentService_GetTransaction_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *paymentServiceClient) MakeTransaction(ctx context.Context, in *MakeTransactionRequest, opts ...grpc.CallOption) (*TransactionInfo, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(TransactionInfo)
+	err := c.cc.Invoke(ctx, PaymentService_MakeTransaction_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *paymentServiceClient) MakeTransactionWithAccount(ctx context.Context, in *MakeTransactionWithAccountRequest, opts ...grpc.CallOption) (*TransactionInfo, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(TransactionInfo)
+	err := c.cc.Invoke(ctx, PaymentService_MakeTransactionWithAccount_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// PaymentServiceServer is the server API for PaymentService service.
+// All implementations must embed UnimplementedPaymentServiceServer
+// for forward compatibility.
+type PaymentServiceServer interface {
+	GetWallet(context.Context, *GetWalletRequest) (*GetWalletResponse, error)
+	GetTransaction(context.Context, *GetTransactionRequest) (*GetTransactionResponse, error)
+	MakeTransaction(context.Context, *MakeTransactionRequest) (*TransactionInfo, error)
+	MakeTransactionWithAccount(context.Context, *MakeTransactionWithAccountRequest) (*TransactionInfo, error)
+	mustEmbedUnimplementedPaymentServiceServer()
+}
+
+// UnimplementedPaymentServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedPaymentServiceServer struct{}
+
+func (UnimplementedPaymentServiceServer) GetWallet(context.Context, *GetWalletRequest) (*GetWalletResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetWallet not implemented")
+}
+func (UnimplementedPaymentServiceServer) GetTransaction(context.Context, *GetTransactionRequest) (*GetTransactionResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetTransaction not implemented")
+}
+func (UnimplementedPaymentServiceServer) MakeTransaction(context.Context, *MakeTransactionRequest) (*TransactionInfo, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method MakeTransaction not implemented")
+}
+func (UnimplementedPaymentServiceServer) MakeTransactionWithAccount(context.Context, *MakeTransactionWithAccountRequest) (*TransactionInfo, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method MakeTransactionWithAccount not implemented")
+}
+func (UnimplementedPaymentServiceServer) mustEmbedUnimplementedPaymentServiceServer() {}
+func (UnimplementedPaymentServiceServer) testEmbeddedByValue()                        {}
+
+// UnsafePaymentServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to PaymentServiceServer will
+// result in compilation errors.
+type UnsafePaymentServiceServer interface {
+	mustEmbedUnimplementedPaymentServiceServer()
+}
+
+func RegisterPaymentServiceServer(s grpc.ServiceRegistrar, srv PaymentServiceServer) {
+	// If the following call pancis, it indicates UnimplementedPaymentServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
+	s.RegisterService(&PaymentService_ServiceDesc, srv)
+}
+
+func _PaymentService_GetWallet_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetWalletRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(PaymentServiceServer).GetWallet(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: PaymentService_GetWallet_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(PaymentServiceServer).GetWallet(ctx, req.(*GetWalletRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _PaymentService_GetTransaction_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetTransactionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(PaymentServiceServer).GetTransaction(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: PaymentService_GetTransaction_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(PaymentServiceServer).GetTransaction(ctx, req.(*GetTransactionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _PaymentService_MakeTransaction_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MakeTransactionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(PaymentServiceServer).MakeTransaction(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: PaymentService_MakeTransaction_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(PaymentServiceServer).MakeTransaction(ctx, req.(*MakeTransactionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _PaymentService_MakeTransactionWithAccount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MakeTransactionWithAccountRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(PaymentServiceServer).MakeTransactionWithAccount(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: PaymentService_MakeTransactionWithAccount_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(PaymentServiceServer).MakeTransactionWithAccount(ctx, req.(*MakeTransactionWithAccountRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// PaymentService_ServiceDesc is the grpc.ServiceDesc for PaymentService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var PaymentService_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "proto.PaymentService",
+	HandlerType: (*PaymentServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "GetWallet",
+			Handler:    _PaymentService_GetWallet_Handler,
+		},
+		{
+			MethodName: "GetTransaction",
+			Handler:    _PaymentService_GetTransaction_Handler,
+		},
+		{
+			MethodName: "MakeTransaction",
+			Handler:    _PaymentService_MakeTransaction_Handler,
+		},
+		{
+			MethodName: "MakeTransactionWithAccount",
+			Handler:    _PaymentService_MakeTransactionWithAccount_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "payment.proto",
+}