feat: release v1.0.0

internal/service/tag.go

@@ -0,0 +1,87 @@
+package service
+
+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 TagService struct {
+	store *db.Store
+}
+
+func NewTagService(store *db.Store) *TagService {
+	return &TagService{
+		store: store,
+	}
+}
+
+func (s *TagService) ListPage(ctx context.Context, p *common.Pagination) ([]sqlc.Tag, int64, error) {
+	params := sqlc.ListTagsParams{
+		Limit:  p.PageSize,
+		Offset: (p.Page - 1) * p.PageSize,
+	}
+
+	total, err := s.store.CountTags(ctx)
+	if err != nil {
+		return nil, 0, err
+	}
+
+	list, err := s.store.ListTags(ctx, params)
+	if err != nil {
+		return nil, 0, err
+	}
+
+	return list, total, nil
+}
+
+func (s *TagService) ListAll(ctx context.Context) ([]sqlc.Tag, error) {
+	return s.store.ListAllTags(ctx)
+}
+
+func (s *TagService) Create(ctx context.Context, req request.CreateTagRequest) error {
+	params := sqlc.CreateTagParams{
+		Name: req.Name,
+		Code: req.Code,
+		Sort: req.Sort,
+	}
+
+	err := s.store.CreateTag(ctx, params)
+	return dberr.MapUniqueViolation(err, dberr.TagCodeKey, errs.ErrTagCodeAlreadyExists)
+}
+
+func (s *TagService) Update(ctx context.Context, id int32, req request.UpdateTagRequest) error {
+	params := sqlc.UpdateTagParams{
+		ID:   id,
+		Name: req.Name,
+		Code: req.Code,
+		Sort: req.Sort,
+	}
+	rows, err := s.store.UpdateTag(ctx, params)
+	// 先判断数据条目是否存在
+	if err = dberr.MapRowsAffected(rows, err, errs.ErrTagNotFound); err != nil {
+		// 再判断code是否重复
+		return dberr.MapUniqueViolation(err, dberr.TagCodeKey, errs.ErrTagCodeAlreadyExists)
+	}
+
+	return nil
+}
+
+func (s *TagService) Delete(ctx context.Context, id int32) error {
+	return s.store.WithTx(ctx, func(q *sqlc.Queries) error {
+		// 删除中间表数据
+		err := s.store.DeletePostTagByTagID(ctx, id)
+		if err != nil {
+			return err
+		}
+
+		// 删除标签数据
+		rows, err := s.store.DeleteTag(ctx, id)
+		return dberr.MapRowsAffected(rows, err, errs.ErrTagNotFound)
+	})
+
+}