1 files changed, 139 insertions, 0 deletions
diff --git a/lib/Migration/Version20003Date20221102170153.php b/lib/Migration/Version20003Date20221102170153.php
new file mode 100644
index 00000000..6a16a22a
--- /dev/null
+++ b/lib/Migration/Version20003Date20221102170153.php
@@ -0,0 +1,139 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2022 Louis Chemineau <louis@chmn.me>
+ *
+ * @author Louis Chemineau <louis@chmn.me>
+ *
+ * @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 OCA\Photos\Migration;
+
+use Closure;
+use OCP\IDBConnection;
+use OCP\DB\Types;
+use OCP\DB\ISchemaWrapper;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Auto-generated migration step: Please modify to your needs!
+ */
+class Version20003Date20221102170153 extends SimpleMigrationStep {
+	protected IDBConnection $connection;
+
+	public function __construct(IDBConnection $connection) {
+		$this->connection = $connection;
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if ($schema->hasTable("photos_albums_collabs")) {
+			return null;
+		}
+
+		$table = $schema->createTable("photos_albums_collabs");
+		$table->addColumn('id', Types::BIGINT, [
+			'autoincrement' => true,
+			'notnull' => true,
+			'length' => 20,
+		]);
+		$table->addColumn('album_id', Types::BIGINT, [
+			'notnull' => true,
+			'length' => 20,
+		]);
+		$table->addColumn('collaborator_id', Types::STRING, [
+			'notnull' => true,
+			'length' => 64,
+		]);
+		$table->addColumn('collaborator_type', Types::INTEGER, [
+			'notnull' => true,
+		]);
+
+		$table->setPrimaryKey(['id']);
+		$table->addUniqueIndex(['album_id', 'collaborator_id', 'collaborator_type'], 'album_collabs_uniq_collab');
+
+		return $schema;
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return void
+	 */
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+		if (!$schema->hasTable('photos_collaborators')) {
+			return;
+		}
+
+		$insert = $this->connection->getQueryBuilder();
+		$insert->insert('photos_albums_collabs')
+			->values([
+				'album_id' => $insert->createParameter('album_id'),
+				'collaborator_id' => $insert->createParameter('collaborator_id'),
+				'collaborator_type' => $insert->createParameter('collaborator_type'),
+			]);
+
+		$select = $this->connection->getQueryBuilder();
+		$select->select('*')
+			->from('photos_collaborators')
+			->setMaxResults(1000);
+
+		$offset = 0;
+		$movedRows = 0;
+		do {
+			$movedRows = $this->chunkedCopying($insert, $select, $offset);
+			$offset += $movedRows;
+		} while ($movedRows !== 0);
+	}
+
+	protected function chunkedCopying(IQueryBuilder $insert, IQueryBuilder $select, int $offset): int {
+		$this->connection->beginTransaction();
+
+		$result = $select
+			->setFirstResult($offset)
+			->executeQuery();
+
+		while ($row = $result->fetch()) {
+			$insert
+				->setParameter('album_id', (int)$row['album_id'], IQueryBuilder::PARAM_INT)
+				->setParameter('collaborator_id', $row['collaborator_id'])
+				->setParameter('collaborator_type', (int) $row['collaborator_type'], IQueryBuilder::PARAM_INT)
+				->executeStatement();
+		}
+
+		$result->closeCursor();
+		$this->connection->commit();
+
+		return $result->rowCount();
+	}
+}