Revert "Fix schedule tasks bugs (#28691)" (part 2)

This function is now being used elsewhere and cannot be reverted. Only
the part that was modified in addition to being moved is deleted.

(cherry picked from commit 72954836a4)
(cherry picked from commit 86f4d1871e)
(cherry picked from commit 8089076ee2)

.deadcode-out

@@ -324,6 +324,7 @@ package "code.gitea.io/gitea/services/pull"
 
 package "code.gitea.io/gitea/services/repository"
 	func IsErrForkAlreadyExist
+	func UpdateRepositoryUnits
 
 package "code.gitea.io/gitea/services/repository/archiver"
 	func ArchiveRepository

services/repository/setting.go

@@ -0,0 +1,38 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repository
+
+import (
+	"context"
+
+	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unit"
+)
+
+// UpdateRepositoryUnits updates a repository's units
+func UpdateRepositoryUnits(ctx context.Context, repo *repo_model.Repository, units []repo_model.RepoUnit, deleteUnitTypes []unit.Type) (err error) {
+	ctx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	// Delete existing settings of units before adding again
+	for _, u := range units {
+		deleteUnitTypes = append(deleteUnitTypes, u.Type)
+	}
+
+	if _, err = db.GetEngine(ctx).Where("repo_id = ?", repo.ID).In("type", deleteUnitTypes).Delete(new(repo_model.RepoUnit)); err != nil {
+		return err
+	}
+
+	if len(units) > 0 {
+		if err = db.Insert(ctx, units); err != nil {
+			return err
+		}
+	}
+
+	return committer.Commit()
+}