Fix forge oauth columns migration (#5525)

server/store/datastore/migration/027_fix_forge_columns.go

@@ -1,3 +1,17 @@
+// Copyright 2025 Woodpecker Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package migration
 
 import (
@@ -8,6 +22,17 @@ import (
 var fixForgeColumns = xormigrate.Migration{
 	ID: "fix-forge-columns",
 	MigrateSession: func(sess *xorm.Session) (err error) {
+		type forge struct {
+			OAuthClientID     string `xorm:"VARCHAR(250) 'o_auth_client_i_d'"`
+			OAuthClientSecret string `xorm:"VARCHAR(250) 'o_auth_client_secret'"`
+		}
+
+		// Ensure columns to rename exist
+		if err := sess.Sync(new(forge)); err != nil {
+			return err
+		}
+
+		// Rename old columns to new names
 		if err := renameColumn(sess, "forges", "o_auth_client_i_d", "oauth_client_id"); err != nil {
 			return err
 		}