4 files changed, 51 insertions, 0 deletions
diff --git a/lib/public/UserMigration/IImportSource.php b/lib/public/UserMigration/IImportSource.php
index df91c0e71ab..d34f2752549 100644
--- a/lib/public/UserMigration/IImportSource.php
+++ b/lib/public/UserMigration/IImportSource.php
@@ -32,6 +32,7 @@ use OCP\Files\Folder;
  * @since 24.0.0
  */
 interface IImportSource {
+	public const PATH_USER = 'user.json';
 
 	/**
 	 * Reads a file from the export
@@ -64,6 +65,13 @@ interface IImportSource {
 	public function getFolderListing(string $path): array;
 
 	/**
+	 * Test if a path exists, which may be a file or a folder
+	 *
+	 * @since 24.0.0
+	 */
+	public function pathExists(string $path): bool;
+
+	/**
 	 * Copy files from the export to a Folder
 	 *
 	 * Folder $destination folder to copy into
@@ -90,6 +98,13 @@ interface IImportSource {
 	public function getMigratorVersion(string $migrator): ?int;
 
 	/**
+	 * Get original uid of the imported account
+	 *
+	 * @since 24.0.0
+	 */
+	public function getOriginalUid(): string;
+
+	/**
 	 * Called after import is complete
 	 *
 	 * @since 24.0.0
diff --git a/lib/public/UserMigration/IMigrator.php b/lib/public/UserMigration/IMigrator.php
index 4ff09167f5e..c97fb3c0bca 100644
--- a/lib/public/UserMigration/IMigrator.php
+++ b/lib/public/UserMigration/IMigrator.php
@@ -38,6 +38,7 @@ interface IMigrator {
 	/**
 	 * Export user data
 	 *
+	 * @throws UserMigrationException
 	 * @since 24.0.0
 	 */
 	public function export(
@@ -49,6 +50,7 @@ interface IMigrator {
 	/**
 	 * Import user data
 	 *
+	 * @throws UserMigrationException
 	 * @since 24.0.0
 	 */
 	public function import(
diff --git a/lib/public/UserMigration/TMigratorBasicVersionHandling.php b/lib/public/UserMigration/TMigratorBasicVersionHandling.php
index 5554bb90a91..20a30a24307 100644
--- a/lib/public/UserMigration/TMigratorBasicVersionHandling.php
+++ b/lib/public/UserMigration/TMigratorBasicVersionHandling.php
@@ -28,6 +28,7 @@ namespace OCP\UserMigration;
 
 /**
  * Basic version handling: we can import older versions but not newer ones
+ * @since 24.0.0
  */
 trait TMigratorBasicVersionHandling {
 	protected int $version = 1;
diff --git a/lib/public/UserMigration/UserMigrationException.php b/lib/public/UserMigration/UserMigrationException.php
new file mode 100644
index 00000000000..ed8c28a6208
--- /dev/null
+++ b/lib/public/UserMigration/UserMigrationException.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2022 Côme Chilliet <come.chilliet@nextcloud.com>
+ *
+ * @author Côme Chilliet <come.chilliet@nextcloud.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCP\UserMigration;
+
+/**
+ * @since 24.0.0
+ */
+class UserMigrationException extends \Exception {
+}