1 files changed, 79 insertions, 0 deletions
diff --git a/core/Command/Db/Migrations/GenerateMetadataCommand.php b/core/Command/Db/Migrations/GenerateMetadataCommand.php
new file mode 100644
index 00000000000..581259c99df
--- /dev/null
+++ b/core/Command/Db/Migrations/GenerateMetadataCommand.php
@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OC\Core\Command\Db\Migrations;
+
+use OC\Migration\MetadataManager;
+use OCP\App\IAppManager;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * @since 30.0.0
+ */
+class GenerateMetadataCommand extends Command {
+	public function __construct(
+		private readonly MetadataManager $metadataManager,
+		private readonly IAppManager $appManager,
+	) {
+		parent::__construct();
+	}
+
+	protected function configure(): void {
+		$this->setName('migrations:generate-metadata')
+			->setHidden(true)
+			->setDescription('Generate metadata from DB migrations - internal and should not be used');
+
+		parent::configure();
+	}
+
+	public function execute(InputInterface $input, OutputInterface $output): int {
+		$output->writeln(
+			json_encode(
+				[
+					'migrations' => $this->extractMigrationMetadata()
+				],
+				JSON_PRETTY_PRINT
+			)
+		);
+
+		return 0;
+	}
+
+	private function extractMigrationMetadata(): array {
+		return [
+			'core' => $this->extractMigrationMetadataFromCore(),
+			'apps' => $this->extractMigrationMetadataFromApps()
+		];
+	}
+
+	private function extractMigrationMetadataFromCore(): array {
+		return $this->metadataManager->extractMigrationAttributes('core');
+	}
+
+	/**
+	 * get all apps and extract attributes
+	 *
+	 * @return array
+	 * @throws \Exception
+	 */
+	private function extractMigrationMetadataFromApps(): array {
+		$allApps = $this->appManager->getAllAppsInAppsFolders();
+		$metadata = [];
+		foreach ($allApps as $appId) {
+			// We need to load app before being able to extract Migrations
+			$alreadyLoaded = $this->appManager->isAppLoaded($appId);
+			if (!$alreadyLoaded) {
+				$this->appManager->loadApp($appId);
+			}
+			$metadata[$appId] = $this->metadataManager->extractMigrationAttributes($appId);
+		}
+		return $metadata;
+	}
+}