feat: update admin

backend/app/models/medias.go

@@ -257,3 +257,21 @@ func (m *mediasModel) GetRelations(ctx context.Context, hash string) ([]*model.M
 		return &media
 	}), nil
 }
+
+// Count
+func (m *mediasModel) Count(ctx context.Context) (int64, error) {
+	tbl := table.Medias
+	stmt := tbl.SELECT(COUNT(tbl.ID).AS("count"))
+	m.log.Infof("sql: %s", stmt.DebugSql())
+
+	var count struct {
+		Count int64
+	}
+
+	if err := stmt.QueryContext(ctx, db, &count); err != nil {
+		m.log.Errorf("error counting media items: %v", err)
+		return 0, err
+	}
+
+	return count.Count, nil
+}