snapshot of https://github.com/traggo/server.git (master, 2026-09-16; blobs > 131072B omitted)

tag/remove.go

@@ -0,0 +1,60 @@
+package tag
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/jinzhu/copier"
+	"github.com/traggo/server/auth"
+	"github.com/traggo/server/generated/gqlmodel"
+	"github.com/traggo/server/model"
+)
+
+// RemoveTag removes a tag.
+func (r *ResolverForTag) RemoveTag(ctx context.Context, key string) (*gqlmodel.TagDefinition, error) {
+	tag := model.TagDefinition{}
+	userID := auth.GetUser(ctx).ID
+	if r.DB.Where(&model.TagDefinition{UserID: userID, Key: key}).Find(&tag).RecordNotFound() {
+		return nil, fmt.Errorf("tag with key '%s' does not exist", key)
+	}
+
+	usedInEntries := []model.DashboardEntry{}
+	if err := r.DB.
+		Joins("INNER JOIN dashboards ON dashboard_entries.dashboard_id = dashboards.id").
+		Where("dashboards.user_id = ?", userID).
+		Where("keys LIKE ? OR keys LIKE ? OR keys LIKE ?", "%"+key, "%"+key+"%", key+"%").
+		Find(&usedInEntries).Error; err != nil {
+		return nil, err
+	}
+
+	if len(usedInEntries) > 0 {
+		dashboard := &model.Dashboard{ID: usedInEntries[0].DashboardID}
+		r.DB.Find(dashboard)
+		return nil, fmt.Errorf("tag '%s' is used in dashboard '%s' entry '%s', remove this reference before deleting the tag", key, dashboard.Name, usedInEntries[0].Title)
+	}
+
+	tx := r.DB.Begin()
+	if err := tx.Where(model.TagDefinition{Key: key, UserID: userID}).
+		Delete(new(model.TagDefinition)).Error; err != nil {
+		tx.Rollback()
+		return nil, err
+	}
+
+	timeSpansIdsOfUser := tx.Model(new(model.TimeSpan)).
+		Select("id").
+		Where(&model.TimeSpan{UserID: userID}).
+		SubQuery()
+
+	if err := tx.
+		Where("time_span_id in ?", timeSpansIdsOfUser).
+		Where(&model.TimeSpanTag{Key: key}).
+		Delete(new(model.TimeSpanTag)).Error; err != nil {
+		tx.Rollback()
+		return nil, err
+	}
+
+	remove := tx.Commit()
+	gqlTag := &gqlmodel.TagDefinition{}
+	copier.Copy(gqlTag, &tag)
+	return gqlTag, remove.Error
+}