From c9b697318ff23e47cd2cf676ef7b54b60175223a Mon Sep 17 00:00:00 2001
From: aichy126 <16996097+aichy126@users.noreply.github.com>
Date: Tue, 14 Feb 2023 15:53:35 +0800
Subject: [PATCH] add GetTagSynonymCount

---
 internal/repo/tag/tag_repo.go             |  9 +++++++++
 internal/service/tag/tag_service.go       | 12 +++++++++++-
 internal/service/tag_common/tag_common.go |  1 +
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/internal/repo/tag/tag_repo.go b/internal/repo/tag/tag_repo.go
index 0c1169e0..02604cb7 100644
--- a/internal/repo/tag/tag_repo.go
+++ b/internal/repo/tag/tag_repo.go
@@ -8,6 +8,7 @@ import (
 	"github.com/answerdev/answer/internal/entity"
 	"github.com/answerdev/answer/internal/service/tag_common"
 	"github.com/answerdev/answer/internal/service/unique"
+	"github.com/answerdev/answer/pkg/converter"
 	"github.com/segmentfault/pacman/errors"
 	"xorm.io/builder"
 )
@@ -61,6 +62,14 @@ func (tr *tagRepo) UpdateTagSynonym(ctx context.Context, tagSlugNameList []strin
 	return
 }
 
+func (tr *tagRepo) GetTagSynonymCount(ctx context.Context, tagID string) (count int64, err error) {
+	count, err = tr.data.DB.Count(&entity.Tag{MainTagID: converter.StringToInt64(tagID), Status: entity.TagStatusAvailable})
+	if err != nil {
+		err = errors.InternalServer(reason.DatabaseError).WithError(err).WithStack()
+	}
+	return
+}
+
 // GetTagList get tag list all
 func (tr *tagRepo) GetTagList(ctx context.Context, tag *entity.Tag) (tagList []*entity.Tag, err error) {
 	tagList = make([]*entity.Tag, 0)
diff --git a/internal/service/tag/tag_service.go b/internal/service/tag/tag_service.go
index d4c4d256..2497b2c7 100644
--- a/internal/service/tag/tag_service.go
+++ b/internal/service/tag/tag_service.go
@@ -50,14 +50,24 @@ func NewTagService(
 
 // RemoveTag delete tag
 func (ts *TagService) RemoveTag(ctx context.Context, req *schema.RemoveTagReq) (err error) {
+	//If the tag has associated problems, it cannot be deleted
 	tagCount, err := ts.tagCommonService.CountTagRelByTagID(ctx, req.TagID)
 	if err != nil {
 		return err
 	}
-	//If the tag has associated problems, it cannot be deleted
 	if tagCount > 0 {
 		return errors.BadRequest(reason.TagIsUsedCannotDelete)
 	}
+
+	//If the tag has associated problems, it cannot be deleted
+	tagSynonymCount, err := ts.tagRepo.GetTagSynonymCount(ctx, req.TagID)
+	if err != nil {
+		return err
+	}
+	if tagSynonymCount > 0 {
+		return errors.BadRequest(reason.TagIsUsedCannotDelete)
+	}
+
 	// tagRelRepo
 	err = ts.tagRepo.RemoveTag(ctx, req.TagID)
 	if err != nil {
diff --git a/internal/service/tag_common/tag_common.go b/internal/service/tag_common/tag_common.go
index 824a46ee..da7ec466 100644
--- a/internal/service/tag_common/tag_common.go
+++ b/internal/service/tag_common/tag_common.go
@@ -38,6 +38,7 @@ type TagRepo interface {
 	RemoveTag(ctx context.Context, tagID string) (err error)
 	UpdateTag(ctx context.Context, tag *entity.Tag) (err error)
 	UpdateTagSynonym(ctx context.Context, tagSlugNameList []string, mainTagID int64, mainTagSlugName string) (err error)
+	GetTagSynonymCount(ctx context.Context, tagID string) (count int64, err error)
 	GetTagList(ctx context.Context, tag *entity.Tag) (tagList []*entity.Tag, err error)
 }