feat: 实现用户注册功能，包括数据库表结构、gRPC 服务和业务逻辑

backend/services/user-svc/internal/grpcserver/server.go

@@ -0,0 +1,139 @@
+package grpcserver
+
+import (
+	"context"
+	"fmt"
+	"net"
+
+	"backend/services/user-svc/internal/domain"
+	"backend/services/user-svc/internal/service"
+	"backend/shared/pkg/errors"
+	"backend/shared/pkg/logger"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
+	// 导入生成的 proto 代码
+	userpb "backend/services/user-svc/proto"
+)
+
+type UserServer struct {
+	userpb.UnimplementedUserServiceServer
+	service *service.UserService
+}
+
+func NewUserServer(service *service.UserService) *UserServer {
+	return &UserServer{service: service}
+}
+
+// Register 实现用户注册接口
+func (s *UserServer) Register(ctx context.Context, req *userpb.RegisterRequest) (*userpb.RegisterResponse, error) {
+	// 转换请求参数
+	domainReq := &domain.RegisterRequest{
+		Account:  req.GetAccount(),
+		Password: req.GetPassword(),
+	}
+
+	// 调用服务层注册用户
+	resp, err := s.service.Register(domainReq)
+	if err != nil {
+		logger.Error("Register failed: %v", err)
+
+		// 转换错误类型
+		switch {
+		case errors.IsConflict(err):
+			return &userpb.RegisterResponse{
+				Response: &userpb.Response{
+					Code:    409,
+					Message: "账号已存在",
+				},
+			}, status.Errorf(codes.AlreadyExists, "账号已存在")
+		case errors.IsInvalidInput(err):
+			return &userpb.RegisterResponse{
+				Response: &userpb.Response{
+					Code:    400,
+					Message: "无效的输入参数",
+				},
+			}, status.Errorf(codes.InvalidArgument, "无效的输入参数")
+		default:
+			return &userpb.RegisterResponse{
+				Response: &userpb.Response{
+					Code:    500,
+					Message: "内部服务器错误",
+				},
+			}, status.Errorf(codes.Internal, "内部服务器错误")
+		}
+	}
+
+	// 构造响应
+	return &userpb.RegisterResponse{
+		UserId: resp.UserID.String(),
+		Account: resp.Account,
+		Response: &userpb.Response{
+			Code:    200,
+			Message: "注册成功",
+		},
+	}, nil
+}
+
+// GetUserByAccount 实现根据账号获取用户信息接口
+func (s *UserServer) GetUserByAccount(ctx context.Context, req *userpb.GetUserByAccountRequest) (*userpb.GetUserByAccountResponse, error) {
+	// 调用服务层获取用户信息
+	user, account, _, err := s.service.GetUserByAccount(req.GetAccount())
+	if err != nil {
+		logger.Error("GetUserByAccount failed: %v", err)
+
+		// 转换错误类型
+		switch {
+		case errors.IsNotFound(err):
+			return &userpb.GetUserByAccountResponse{
+				Response: &userpb.Response{
+					Code:    404,
+					Message: "用户不存在",
+				},
+			}, status.Errorf(codes.NotFound, "用户不存在")
+		case errors.IsInvalidInput(err):
+			return &userpb.GetUserByAccountResponse{
+				Response: &userpb.Response{
+					Code:    400,
+					Message: "无效的输入参数",
+				},
+			}, status.Errorf(codes.InvalidArgument, "无效的输入参数")
+		default:
+			return &userpb.GetUserByAccountResponse{
+				Response: &userpb.Response{
+					Code:    500,
+					Message: "内部服务器错误",
+				},
+			}, status.Errorf(codes.Internal, "内部服务器错误")
+		}
+	}
+
+	// 构造响应
+	return &userpb.GetUserByAccountResponse{
+		UserId: user.ID.String(),
+		Account: account.Account,
+		Response: &userpb.Response{
+			Code:    200,
+			Message: "获取成功",
+		},
+	}, nil
+}
+
+// Start 启动 gRPC 服务器
+func Start(service *service.UserService, port int) error {
+	server := grpc.NewServer()
+	userServer := NewUserServer(service)
+
+	userpb.RegisterUserServiceServer(server, userServer)
+
+	addr := fmt.Sprintf(":%d", port)
+	listener, err := net.Listen("tcp", addr)
+	if err != nil {
+		return err
+	}
+
+	logger.Info("User service gRPC server starting on %s", addr)
+	return server.Serve(listener)
+}