实现category service基础接口

gateway/internal/logic/createcategorylogic.go

@@ -0,0 +1,103 @@
+package logic
+
+import (
+	"context"
+	"strings"
+
+	"godemo/category/category"
+	"godemo/gateway/internal/svc"
+	"godemo/gateway/internal/types"
+
+	"github.com/zeromicro/go-zero/core/logx"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+type CreateCategoryLogic struct {
+	logx.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+func NewCreateCategoryLogic(ctx context.Context, svcCtx *svc.ServiceContext) *CreateCategoryLogic {
+	return &CreateCategoryLogic{
+		Logger: logx.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+func (l *CreateCategoryLogic) CreateCategory(req *types.CreateCategoryReq) (resp *types.CreateCategoryResp, err error) {
+	// 1. 参数验证
+	if err := validateCreateRequest(req); err != nil {
+		return nil, err
+	}
+
+	// 2. 准备 RPC 请求
+	rpcReq := &category.CreateCategoryRequest{
+		SystemId:    req.SystemID,
+		Name:        req.Name,
+		Description: req.Description,
+	}
+
+	// 可选参数处理
+	if req.Alias != "" {
+		rpcReq.Alias = req.Alias
+	}
+
+	if req.ParentID != "" {
+		rpcReq.ParentId = req.ParentID
+	}
+
+	// 3. 调用 RPC 服务
+	rpcResp, rpcErr := l.svcCtx.CategoryRpc.CreateCategory(l.ctx, rpcReq)
+	if rpcErr != nil {
+		return nil, rpcErr
+	}
+
+	// 4. 构建响应
+	resp = &types.CreateCategoryResp{
+		ID: rpcResp.Category.Id,
+	}
+
+	l.Logger.Infof("Category created successfully: ID=%s, Name=%s", resp.ID, req.Name)
+	return resp, nil
+}
+
+// validateCreateRequest 验证创建分类请求
+func validateCreateRequest(req *types.CreateCategoryReq) error {
+	// 必需字段检查
+	if strings.TrimSpace(req.SystemID) == "" {
+		return status.Error(codes.InvalidArgument, "systemId不能为空")
+	}
+	if strings.TrimSpace(req.Name) == "" {
+		return status.Error(codes.InvalidArgument, "name不能为空")
+	}
+
+	// 名称长度限制
+	if len(req.Name) > 50 {
+		return status.Error(codes.InvalidArgument, "alias cannot exceed 50 characters")
+	}
+
+	// 别名格式验证 (只允许字母、数字、连字符和下划线)
+	// if req.Alias != "" {
+	// 	if len(req.Alias) > 50 {
+	// 		return errors.New("alias cannot exceed 50 characters")
+	// 	}
+	// 	for _, ch := range req.Alias {
+	// 		if !(ch >= 'a' && ch <= 'z') &&
+	// 			!(ch >= 'A' && ch <= 'Z') &&
+	// 			!(ch >= '0' && ch <= '9') &&
+	// 			ch != '-' && ch != '_' {
+	// 			return errors.New("alias can only contain letters, numbers, hyphens and underscores")
+	// 		}
+	// 	}
+	// }
+
+	// 描述长度限制
+	if len(req.Description) > 500 {
+		return status.Error(codes.InvalidArgument, "description cannot exceed 500 characters")
+	}
+
+	return nil
+}