From f82a989ea81e9ebab2ae398a051bf0540fb9daf4 Mon Sep 17 00:00:00 2001
From: Simon L <szaimen@e.mail.de>
Date: Wed, 7 Feb 2024 13:34:10 +0100
Subject: [PATCH] add admin check for non unique index names

Signed-off-by: Simon L <szaimen@e.mail.de>
---
 .../DatabaseHasNonUniqueIndexNames.php        | 119 ++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 apps/settings/lib/SetupChecks/DatabaseHasNonUniqueIndexNames.php

diff --git a/apps/settings/lib/SetupChecks/DatabaseHasNonUniqueIndexNames.php b/apps/settings/lib/SetupChecks/DatabaseHasNonUniqueIndexNames.php
new file mode 100644
index 0000000000000..6c92ba6f1776b
--- /dev/null
+++ b/apps/settings/lib/SetupChecks/DatabaseHasNonUniqueIndexNames.php
@@ -0,0 +1,119 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2023 Simon Lindner <szaimen@e.mail.de>
+ *
+ * @author Simon Lindner <szaimen@e.mail.de>
+ *
+ * @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\Settings\SetupChecks;
+
+use Doctrine\DBAL\Types\BigIntType;
+use OC\Core\Command\Db\ConvertFilecacheBigInt;
+use OC\DB\Connection;
+use OC\DB\SchemaWrapper;
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\IDBConnection;
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\SetupCheck\ISetupCheck;
+use OCP\SetupCheck\SetupResult;
+
+class DatabasePendingBigIntConversions implements ISetupCheck {
+	public function __construct(
+		private IL10N $l10n,
+		private IURLGenerator $urlGenerator,
+		private Connection $db,
+		private IEventDispatcher $dispatcher,
+		private IDBConnection $connection,
+	) {
+	}
+
+	public function getCategory(): string {
+		return 'database';
+	}
+
+	public function getName(): string {
+		return $this->l10n->t('Database has non unique index names');
+	}
+
+	protected function getUniqueNamesConstraints(Schema $targetSchema): void {
+		$constraintNames = [];
+
+		$sequences = $targetSchema->getSequences();
+
+		foreach ($targetSchema->getTables() as $table) {
+			foreach ($table->getIndexes() as $thing) {
+				$indexName = strtolower($thing->getName());
+				if ($indexName === 'primary' || $thing->isPrimary()) {
+					continue;
+				}
+
+				if (isset($constraintNames[$thing->getName()])) {
+					throw new \InvalidArgumentException('Index name "' . $thing->getName() . '" for table "' . $table->getName() . '" collides with the constraint on table "' . $constraintNames[$thing->getName()] . '".');
+				}
+				$constraintNames[$thing->getName()] = $table->getName();
+			}
+
+			foreach ($table->getForeignKeys() as $thing) {
+				if (isset($constraintNames[$thing->getName()])) {
+					throw new \InvalidArgumentException('Foreign key name "' . $thing->getName() . '" for table "' . $table->getName() . '" collides with the constraint on table "' . $constraintNames[$thing->getName()] . '".');
+				}
+				$constraintNames[$thing->getName()] = $table->getName();
+			}
+
+			$primaryKey = $table->getPrimaryKey();
+			if ($primaryKey instanceof Index) {
+				$indexName = strtolower($primaryKey->getName());
+				if ($indexName === 'primary') {
+					continue;
+				}
+
+				if (isset($constraintNames[$indexName])) {
+					throw new \InvalidArgumentException('Primary index name "' . $indexName . '" for table "' . $table->getName() . '" collides with the constraint on table "' . $constraintNames[$thing->getName()] . '".');
+				}
+				$constraintNames[$indexName] = $table->getName();
+			}
+		}
+
+		foreach ($sequences as $sequence) {
+			if (isset($constraintNames[$sequence->getName()])) {
+				throw new \InvalidArgumentException('Sequence name "' . $sequence->getName() . '" for table "' . $table->getName() . '" collides with the constraint on table "' . $constraintNames[$thing->getName()] . '".');
+			}
+			$constraintNames[$sequence->getName()] = 'sequence';
+		}
+	}
+
+	public function run(): SetupResult {
+		$pendingColumns = $this->getUniqueNamesConstraints();
+		if (empty($pendingColumns)) {
+			return SetupResult::success('None');
+		} else {
+			$list = '';
+			foreach ($pendingColumns as $pendingColumn) {
+				$list .= "\n$pendingColumn";
+			}
+			$list .= "\n";
+			return SetupResult::info(
+				$this->l10n->t('Some indexes in the database are non unique.').$list
+			);
+		}
+	}
+}