feat: 统一sql命名、函数命名

internal/service/admin/category.go

@@ -0,0 +1,87 @@
+package admin
+
+import (
+	"context"
+	"server/internal/db"
+	"server/internal/db/sqlc"
+	"server/internal/model/common"
+	"server/internal/model/request"
+	"server/internal/pkg/dberr"
+	"server/internal/pkg/errs"
+)
+
+type CategoryService struct {
+	store *db.Store
+}
+
+func NewCategoryService(store *db.Store) *CategoryService {
+	return &CategoryService{
+		store: store,
+	}
+}
+
+func (s *CategoryService) List(ctx context.Context, p *common.Pagination) (*common.PageResult[sqlc.Category], error) {
+	params := sqlc.ListCategoriesParams{
+		Limit:  p.PageSize,
+		Offset: (p.Page - 1) * p.PageSize,
+	}
+
+	total, err := s.store.CountCategories(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	list, err := s.store.ListCategories(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+
+	return &common.PageResult[sqlc.Category]{
+		List:  list,
+		Total: total,
+	}, nil
+}
+
+func (s *CategoryService) ListAll(ctx context.Context) ([]sqlc.Category, error) {
+	return s.store.ListAllCategories(ctx)
+}
+
+func (s *CategoryService) Create(ctx context.Context, req request.CreateCategoryRequest) error {
+	params := sqlc.CreateCategoryParams{
+		Name: req.Name,
+		Code: req.Code,
+		Sort: req.Sort,
+	}
+
+	err := s.store.CreateCategory(ctx, params)
+	return dberr.MapUniqueViolation(err, dberr.CategoryCodeKey, errs.ErrCategoryCodeAlreadyExists)
+}
+
+func (s *CategoryService) Update(ctx context.Context, id int32, req request.UpdateCategoryRequest) error {
+	params := sqlc.UpdateCategoryParams{
+		ID:   id,
+		Name: req.Name,
+		Code: req.Code,
+		Sort: req.Sort,
+	}
+	rows, err := s.store.UpdateCategory(ctx, params)
+	// 先判断数据条目是否存在
+	if err = dberr.MapRowsAffected(rows, err, errs.ErrCategoryNotFound); err != nil {
+		// 再判断code是否重复
+		return dberr.MapUniqueViolation(err, dberr.CategoryCodeKey, errs.ErrCategoryCodeAlreadyExists)
+	}
+
+	return nil
+}
+
+func (s *CategoryService) Delete(ctx context.Context, id int32) error {
+	return s.store.WithTx(ctx, func(q *sqlc.Queries) error {
+		err := q.DeletePostCategoryByCategoryID(ctx, id)
+		if err != nil {
+			return err
+		}
+
+		rows, err := q.DeleteCategory(ctx, id)
+		return dberr.MapRowsAffected(rows, err, errs.ErrCategoryNotFound)
+	})
+}