初始化项目框架，完成部分接口开发

internal/logic/category/category.go

@@ -0,0 +1,123 @@
+package category
+
+import (
+	"context"
+	"server/internal/dao"
+	"server/internal/model"
+	"server/internal/model/do"
+	"server/internal/service"
+	"server/utility/ecode"
+)
+
+type sCategory struct {
+}
+
+func New() service.ICategory {
+	return &sCategory{}
+}
+
+func init() {
+	service.RegisterCategory(New())
+}
+
+// List retrieves a paginated list of categories
+func (s *sCategory) List(ctx context.Context, in *model.CategoryListIn) (out *model.CategoryListOut, err error) {
+	out = &model.CategoryListOut{}
+	m := dao.Categories.Ctx(ctx)
+	if in.Type != 0 {
+		m = m.Where(dao.Categories.Columns().Type, in.Type)
+	}
+	if err = m.Page(in.Page, in.Size).ScanAndCount(&out.List, &out.Total, false); err != nil {
+		return
+	}
+	return
+}
+
+func (s *sCategory) Create(ctx context.Context, in *model.CategoryAddIn) (out *model.CategoryCRUDOut, err error) {
+	if in.Type != 1 && in.Type != 2 {
+		return nil, ecode.Params.Sub("category_type_invalid")
+	}
+	exist, err := dao.Categories.Ctx(ctx).
+		Where(dao.Categories.Columns().Name, in.Name).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("category_query_failed")
+	}
+	if exist {
+		return nil, ecode.Params.Sub("category_exists")
+	}
+
+	if _, err := dao.Categories.Ctx(ctx).Data(do.Categories{
+		Name: in.Name,
+		Type: in.Type,
+	}).Insert(); err != nil {
+		return nil, ecode.Fail.Sub("category_create_failed")
+	}
+
+	return &model.CategoryCRUDOut{
+		Success: true,
+	}, nil
+}
+
+func (s *sCategory) Update(ctx context.Context, in *model.CategoryEditIn) (out *model.CategoryCRUDOut, err error) {
+	if in.Type != 1 && in.Type != 2 {
+		return nil, ecode.Params.Sub("category_type_invalid")
+	}
+	exist, err := dao.Categories.Ctx(ctx).
+		WherePri(in.Id).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("category_query_failed")
+	}
+	if !exist {
+		return nil, ecode.NotFound.Sub("category_not_found")
+	}
+
+	exist, err = dao.Categories.Ctx(ctx).
+		Where(dao.Categories.Columns().Name, in.Name).
+		Where("id != ?", in.Id).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("category_query_failed")
+	}
+	if exist {
+		return nil, ecode.Params.Sub("category_exists")
+	}
+
+	// Update category
+	_, err = dao.Categories.Ctx(ctx).
+		WherePri(in.Id).
+		Data(do.Categories{
+			Name: in.Name,
+			Type: in.Type,
+		}).Update()
+	if err != nil {
+		return nil, ecode.Fail.Sub("category_update_failed")
+	}
+
+	return &model.CategoryCRUDOut{
+		Success: true,
+	}, nil
+}
+
+func (s *sCategory) Delete(ctx context.Context, in *model.CategoryDelIn) (out *model.CategoryCRUDOut, err error) {
+	exist, err := dao.Categories.Ctx(ctx).
+		WherePri(in.Id).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("category_query_failed")
+	}
+	if !exist {
+		return nil, ecode.NotFound.Sub("category_not_found")
+	}
+
+	// Soft delete category
+	_, err = dao.Categories.Ctx(ctx).WherePri(in.Id).Delete()
+	if err != nil {
+		return nil, ecode.Fail.Sub("category_delete_failed")
+	}
+
+	return &model.CategoryCRUDOut{
+		Success: true,
+	}, nil
+}